Today's testing laboratories and manufacturers have a wide variety of material and component testing needs. To meet these varying requirements, Instron has several accessories designed to help interface with external equipment and measuring devices.
For more information, download the data sheet
Learn more about ElectroPuls
Revolutionary Strain Control
In dynamic and high-force testing environments, specimen failures can be sudden, catastrophic, and unpredictable — particularly when testing composite materials, which may show no signs of yielding before failing explosively. Traditional contacting extensometers are vulnerable to the shock loading generated by these failures, leading to device damage, reduced measurement accuracy, costly replacements, and unplanned machine downtime.
The Instron AVE2 non-contacting video extensometer is designed specifically for these demanding environments. By measuring strain without physical contact with the specimen, the AVE2 is fully isolated from shock loading — protecting your investment, maintaining data integrity, and keeping your testing program running without interruption.
Traditional contacting extensometers are consumable items in high-energy testing environments. Repeated shock loading from specimen failures gradually degrades measurement performance, and a single high-energy break can render a device unusable. The costs add up quickly — not just in replacement devices, but in the calibration of each replacement and the downtime incurred while waiting for a new device to arrive.
The AVE2 eliminates this cycle entirely. Because it never contacts the specimen, it is fully isolated from the forces generated at specimen failure. A single AVE2, calibrated once per year, can be trusted from the first specimen to the last — consolidating multiple transducers into one reliable, long-life strain measurement solution and removing the need to maintain a stock of backup devices.
Beyond protecting the device itself, the AVE2 delivers significant efficiency gains compared to traditional clip-on extensometers. Attaching a clip-on device reliably and consistently — test after test, across different technicians and specimen types — introduces variability that is difficult to control and easy to underestimate.
The AVE2 removes operator attachment from the equation entirely. Setup is faster, more consistent between operators, and eliminates the risk of incorrect attachment affecting results. Unlike travel-limited clip-on devices, the AVE2 can accommodate a wide range of specimen sizes and deflections with a single transducer — simplifying inventory management and reducing the training burden on operators.
With a contacting extensometer, it can be difficult to know whether shock loading from a previous test has affected the device's measurement accuracy. Results may be compromised without any visible sign of damage — and by the time the issue is identified, multiple tests may be affected.
The AVE2 provides consistent, reliable strain data throughout its service life. Because it is never exposed to contact forces or shock loading, its measurement performance does not degrade between calibration visits. For laboratories that currently choose not to record strain data due to the complexity or cost of contacting extensometry, the AVE2 offers a straightforward path to capturing accurate strain data across a wider range of specimens — without adding complexity to the test setup process or risking specimen damage.
The risk that high-energy specimen failures pose to contacting extensometers depends significantly on the material being tested.
Traditional metal specimens tend to yield gradually during their fatigue life. Necking occurs progressively, and the energy released at fracture is largely converted to heat — resulting in a relatively controlled failure event that causes limited shock loading on attached devices.
Composite coupons behave very differently. They may show little or no signs of yielding or progressive damage during their fatigue life, then fail suddenly and catastrophically — releasing a large amount of energy in a very short time. This sudden failure transmits damaging shock loads directly through any contacting device attached to the specimen, with forces sufficient to damage measurement electronics, knife edges, and attachment mechanisms. The result is a device that may no longer measure accurately — and may not show obvious signs of damage until results begin to drift.
For any laboratory running fatigue or high-force testing of composite materials, the question is not whether a contacting extensometer will eventually be damaged — it is how soon, and at what cost.
The AVE2 is designed for use with Instron ElectroPuls® all-electric dynamic test systems and servohydraulic fatigue testing systems. Contact your local Instron office to confirm compatibility with your specific system configuration.
If you are running dynamic or high-force testing on composites or other materials with unpredictable failure modes, our team can help you evaluate whether the AVE2 is the right strain measurement solution for your application.
Please complete the form below and we will be happy to contact you with a response. Our typical response time for an online request is within 1-2 business days. For a faster response, please call +1-800-473-7838.
With endless applications and materials to test, comes the need for grips, fixtures, and connections of all sizes. The following page takes a comprehensive look at the various connection types that Instron has to offer and provides an organized view to understand and select the couplings and adapters needed for your application.
Need help finding the right coupling or adapter? Check our Compatibility Guide to learn about the various types of clevis interfaces commonly found on Instron's electromechanical systems. Please contact us if you have any questions.
Catalog no. 2501-093
Clevis to clevis adapters are used for grip and fixture connections that have a larger or smaller clevis than the load cell or machine adapter.
| Available Models | |||
| End 1 | End 2 | Connection Type | Catalog No. |
| Male - Type OO (6 mm connection with 2.5 mm clevis pin) |
Female - Type O (12 mm connection with 6 mm clevis pin) |
Rigid | 2501-350 |
| Male - Type OO (6 mm connection with 2.5 mm clevis pin) |
Female - Type C (5/8 in. connection with 1/4 in. clevis pin) |
Rigid | S1-13807 |
| Male - Type O (12 mm connection with 6 mm clevis pin) |
Female - Type B (1/2 in. connection with 3/16 in. clevis pin) |
Rigid | 2501-134 |
| Male - Type O (12 mm connection with 6 mm clevis pin) |
Female - Type C (5/8 in. connection with 1/4 in. clevis pin) |
Rigid | 2501-133 |
| Male - Type O (12 mm connection with 6 mm clevis pin) |
Female - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Rigid | 2501-093 |
| Male - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Female - Type O (12 mm connection with 6 mm clevis pin) |
Rigid | 2501-346 |
| Male - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Female - Type B (1/2 in. connection with 3/16 in. clevis pin) |
Rigid | 2501-119 |
| Male - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Female - Type C (5/8 in. connection with 1/4 in. clevis pin) |
Rigid | 2501-120 |
| Male - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Female - Type 1 (34 mm connection with 16 mm clevis pin) |
Rigid | 2501-338 |
Catalog no. 2501-091
Clevis to clevis adapters are used for grip and fixture connections that have a larger or smaller clevis than the load cell or machine adapter. Flexible adapters are used for some applications for the alignment of specimens.
| Available Models | |||
| End 1 | End 2 | Connection Type | Catalog No. |
| Male - Type OO (6 mm connection with 2.5 mm clevis pin) |
Female - Type B (1/2 in. connection with 3/16 in. clevis pin) |
Flexible | 2501-115 |
| Male - Type OO (6 mm connection with 2.5 mm clevis pin) |
Female - Type C (5/8 in. connection with 1/4 in. clevis pin) |
Flexible | 2501-157 |
| Male - Type O (12 mm connection with 6 mm clevis pin) |
Female - Type O (12 mm connection with 6 mm clevis pin) |
Flexible | 2501-348 |
| Male - Type O (12 mm connection with 6 mm clevis pin) |
Female - Type B (1/2 in. connection with 3/16 in. clevis pin) |
Flexible | 2501-109 |
| Male - Type O (12 mm connection with 6 mm clevis pin) |
Female - Type C (5/8 in. connection with 1/4 in. clevis pin) |
Flexible | 2501-094 |
| Male - Type O (12 mm connection with 6 mm clevis pin) |
Female - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Flexible | 2501-091 |
| Male - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Female - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Flexible | 2501-356 |
| Male - Type 1 (34 mm connection with 16 mm clevis pin) |
Female - Type C (5/8 in. connection with 1/4 in. clevis pin) |
Flexible | 2501-170 |
| Male - Type 1 (34 mm connection with 16 mm clevis pin) |
Female - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Flexible | 2501-090 |
Catalog no. 2501-173
Clevis to thread adapters are used for grip and fixture connects on floor model systems when the load cell or machine has a threaded connection.
| Available Models | |||
| End 1 | End 2 | Connection Type | Catalog No. |
| Male - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Male - Type I (M30x2 right hand thread) |
Rigid | 2501-173 |
| Male - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Male - Type II (M48x2 right hand thread) |
Rigid | 2501-172 |
| Male - Type 1 (34 mm connection with 16 mm clevis pin) |
Female - Type O (12 mm connection with 6 mm clevis pin) |
Rigid | 2501-159 |
| Male - Type 1 (34 mm connection with 16 mm clevis pin) |
Female - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Rigid | 2501-092 |
| Male - Type 1 (34 mm connection with 16 mm clevis pin) |
Male - Type I (M30x2 right hand thread) |
Rigid | 2501-073 |
| Male - Type 1 (34 mm connection with 16 mm clevis pin) |
Male - Type II (M48x2 right hand thread) |
Rigid | 2501-171 |
| Male - Type I (M30x2 left hand thread) |
Female - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Rigid | 8005-061 |
| Male - Type II (M48x2 left hand thread) |
Female - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Rigid | 8005-062 |
Catalog no. 8005-042
Threaded adapters are generally used for grips and fixtures to account for high-capacity testing. They will be needed for most hydraulic load string connections, load strings over 100kN, and for systems with threaded base and load cell connections.
| Available Models | |||
| End 1 | End 2 | Connection Type | Catalog No. |
| Male - Type II (M48x2 left hand thread) |
Female - 1.5 in. -12 right hand thread | Rigid | 2501-206 |
| Male - Type II (M48x2 left hand thread) |
Female - Type I (M30x2 left hand thread) |
Rigid | 2501-205 |
| Male - Type II (M48x2 left hand thread) |
Female - 2 in. -12 right hand thread | Rigid | 8005-022 |
| Male - Type I (M30x2 left hand thread) |
Male - Type I (M30x2 right hand thread) |
Rigid | 8005-041 |
| Male - Type I (M30x2 left hand thread) |
Male - Type II (M48x2 right hand thread) |
Rigid | 8005-045 |
| Male - Type II (M48x2 left hand thread) |
Male - Type I (M30x2 right hand thread) |
Rigid | 8005-046 |
| Male - Type II (M48x2 left hand thread) |
Male - Type II (M48x2 right hand thread) |
Rigid | 8005-042 |
| Male - Type IIA (M72x3 left hand thread) |
Male - Type IIA (M72x3 right hand thread) |
Rigid | 8005-043 |
Catalog no. 2501-113
Machine base adapters are generally used for connecting a grip or fixture to the machine. On machines 10 kN and below, a clevis adapter with a through hole for a screw is used. On 30 kN, 50 kN, and 100 kN machines, a flange adapter with clevis and bolt circle is used. For machines above 100 kN, see the threaded adapter section.
| Available Models | |||
| End 1 | End 2 | Connection Type | Catalog No. |
| 6 x M10 Bolt Circle | Female - Type D (1.25 in. connection with 1/2 in. clevis pin) |
Rigid | 2501-113 |
| 6 x M10 Bolt Circle | Female - Type II (M48x2 left hand thread) |
Rigid | 2501-148 |
Catalog nos. 2501-212 & 2501-213
Quick-mount load cell adapters make it easier to secure load cells up to 50 kN to the crosshead. One part of the adapter mounts to the crosshead, the other to the load cell – allowing the load cell to hang securely from the crosshead unaided while you thread the through-bolt to complete installation. Additional load cell adapters are available for use with several load cells.
| Available Models | |
| Description | Catalog No. |
| Full Kit for 5900 or 6800 Table Model to 2580, 2530, and 2525 Series Load Cells (comes with crosshead adapter and one load cell adapter) |
2501-212 |
| Additional Load Cell Adapter for 500 N - 5 kN 2580 Load Cells | 2501-213 |
| Additional Load Cell Adapter for 10 kN – 50 kN 2580 Load Cells | 2501-214 |
| Additional Load Cell Adapter for 5 N – 5 kN 2530 Load Cells | 2501-215 |
Catalog no. 2501-208
Piggyback load cell adapters allow the system’s primary load cell to remain in place while a secondary, low-capacity load cell is installed.
| Available Models | ||||
| Compatible Primary Load Cell Connection Type | Compatible Secondary Load Cells | Catalog No. | ||
| Type D | 500 N to 5 kN For mounting 2580 Series load cells. | 2501-208 | ||
| Type D | 5 N to 5 kN For mounting 2530 Series load cells. | 2501-210 | ||
| Type D | 10 kN to 50 kN For mounting 2580 Series load cells. | 2501-209 | ||
| Type II (M48) | 500 N to 50 kN 2580 Series from 500 N to 50 kN (M10 or M16 attachment bolt) 2530 Series from 500 N to 50 kN (M10 or M16 attachment bolt) 2525 Series from 50 kN or less 2519 Series from 10 N to 5 kN (M6 or M10 attachment bolt) 2518 Series from 50 kN or less |
2501-227 | ||
| Type IIA (M72) | 500 N to 50 kN 2580 Series from 500 N to 50 kN (M10 or M16 attachment bolt) 2530 Series from 500 N to 50 kN (M10 or M16 attachment bolt) 2525 Series – 500 N to 50 kN 2519 Series from 10 N to 5 kN (M6 or M10 attachment bolt) |
2501-228 | ||
Catalog no. 2501-256
Piggyback load string adapters allow high-capacity grips to remain on the load string while providing a connection to utilize a wide variety of other fixtures.
| Available Models | ||||
| Primary Grip | Connection Provided | Catalog No. | ||
| 100 kN Hydraulic Wedge Grip (Catalog no. 2743-401) | Type Df (Low Profile) | 2501-258 | ||
| 100 kN Hydraulic Wedge Grip (Catalog no. 2743-401) | Type Df | 2501-260 | ||
| 300 kN Hydraulic Wedge Grip (Catalog no. 2742-501) | Type II (M48) | 2501-255 | ||
| 300 kN Hydraulic Wedge Grip (Catalog no. 2742-501) | Type Df | 2501-256 | ||
| 600 kN Hydraulic Wedge Grip (Catalog no. 2743-601) | Type IIA (M72) | 2501-259 This adapter can only be used for compression applications. | ||
| 100 kN Precision Manual Wedge Grips (Catalog no. 2716-028) 250 kN Precision Manual Wedge Grips (Catalog no. 2716-030) |
Type Df | 2501-700 | ||
| 100 kN Precision Manual Wedge Grips (Catalog no. 2716-028) 250 kN Precision Manual Wedge Grips (Catalog no. 2716-030) |
Type II (M48) | 2501-702 | ||
Catalog nos. 2501-290 & 2501-291
Drop-through load cell adapters enable the mounting of 2580 Series load cells to legacy Instron universal testing systems and systems that have had a 6800 Series system retrofit. The adapters are placed directly through the crosshead and can be used on both table model and floor model systems up to 100 kN force capacity.
| Available Models | ||||
| Frame Compatibility | Load Cell Compatibility | Maximum Daylight Reduction | Catalog No. | |
| 4464, 4465, 4466, 5564, 5565, 5566 | 2580 Series (500 N - 10 kN) |
153 mm | 2501-290 | |
| 4467, 4469, 5567, 5569 | 2580 Series (500 N - 10 kN) |
165 mm | 2501-291 | |
| 4481, 5581 | 2580-50kN (50 kN) |
133 mm | 2501-291 | |
| 4482, 5582 | 2580-100kN (100 kN) |
111 mm | 2501-292 | |
Universal Spherical Tension Adapter (USTA) kits provide a unique spherical movement for tension applications where alignment is critical and minor compensation is required. These threaded adapters are used for mounting tension fixtures to the machine load cell or base, or for secondary load string adaptation.
| Available Models | ||||
| Force Capacity | End 1 Machine Interface | End 2 Accessory Interface | Connection Type | Catalog No. |
| 300 kN | Type IIm (M48x2m LH) |
300 kN Capacity: Type R4m (M36x4) 100 kN Capacity: Type R3f (0.75-10) |
One Spherical One Rigid |
W-5551-A |
| 300 kN Shortened |
Type IIm (M48x2m LH) |
Full Capacity: Type R4m (M36x4) 100 kN Capacity: Type R3f (0.75-10) |
One Spherical One Rigid |
W-5551-G |
| 300 kN | Type IIm (M48x2m LH) |
300 kN Capacity: Type R4m (M36x4) 100 kN Capacity: Type R3f (0.75-10) |
Two Spherical | W-5551-B |
| 100 kN | Type Dm (1.25 in Connection) |
Full Capacity: Type R4m (M36x4 RH) 100 kN Capacity: Type R3f (0.75in-10 RH) |
One Spherical One Rigid |
W-5551-H |
| 300 kN Threaded Adapter Bushing Kit | Type R4f (M36x4f) | Rigid | W-5551-D | |
| 600 kN | Type IIAm (M72x3m LH) |
600 kN Capacity: Type IIm (M48x2m) 100 kN Capacity: Type R3f (0.75-10) thread |
One Spherical One Rigid |
W-5552-A |
| 600 kN | Type IIAm (M72x3m LH) |
600 kN Capacity: Type IIm (M48x2m) 100 kN Capacity: Type R3f (0.75-10) thread |
Two Spherical | W-5552-B |
| 400 kN | Type IIm (M48x2m LH) |
400 kN Capacity: Type IIm (M48x2m) 100 kN Capacity: Type R3f (0.75-10) thread |
One Spherical One Rigid |
W-5552-E |
| 400 kN | Type IIm (M48x2m LH) |
400 kN Capacity: Type IIm (M48x2m) 100 kN Capacity: Type R3f (0.75-10) thread |
Two Spherical | W-5552-F |
| 600 kN Threaded Adapter Bushing Kit | Type IIf (M48x2f) | Rigid | W-5552-G | |
Pneumatic side action grips are an effective solution for gripping a wide range of materials and specimen types, including fibers, wires, sheet, foils, film, textiles, plastics, elastomers, and components. Repeatable gripping force and speed of operation make pneumatic grips the ideal choice for a wide range of testing applications. In addition, the 2712-04x and 2712-05x grips also have a number of enhanced features to further improve ease of use, repeatability and operator safety including jaw face shields, super-quick jaw face changes and an optional specimen centering device.
50 N - 10 kN Force Capacities
For applications requiring higher test forces, the 2712-04x Series provides consistent pneumatic clamping throughout the test for reliable performance across plastics, elastomers, metals, thin sheet, foil, wire, textiles, and paper.
For low‑force applications, the 2712-05x Series delivers controlled, repeatable pneumatic clamping suited for films, foils, wires, fibers, thin sheets, paper, textiles, and monofilaments.
Pneumatic action grips clamp the specimen through a dual lever arm, actuated by an air cylinder built into the grip body. Gripping force can be controlled by adjusting the input air pressure and remains constant even if the specimen contracts in the gripped area providing the ultimate in 'follow-up' action. Pneumatic grips can be operated by a foot switch or by grip mounted air-valves (most models) making them quicker and simpler to operate than screw-action grips.
| Force Capacity | Catalog no. |
|---|---|
| 50 N | 2712-051 |
| 250 N | 2712-052 |
| 1 kN | 2712-041 |
| 2 kN | 2712-042 |
| 5 kN | 2712-045 |
| 10 kN | 2712-046 |
50 N Model | 2712-051
250 N Model | 2712-052
1 kN Model | 2712-041
10 kN Model | 2712-046
Protect fingers from pinching hazard between the jaw faces (patent pending).
The adjustable flow-control valve can be used to slow down the jaw face closing speed to help prevent accidents.
The 1, 2, 5, and 10 kN models feature an adjustable jaw face opening which can be set to the thickness of the specimen.
Designed for easy and comfortable hand-tightening to eliminate backlash. The smaller thread pitch also makes it easier to apply the required pre-load.
A rotatable connection allows for tidy hose runs. Quick-connect makes disconnecting air supply quick and simple.
Changes jaw faces in seconds without any tools or pins, and without removing the grips from the testing system.
The optional specimen alignment device increases repeatability by helping operators load the specimen in the center of the grips.
The notch in the jaw face shields makes testing wires quicker and easier.
Easily maintain axiality of loading without adjusting for changes in specimen thickness.
Available on the 5 kN and 10 kN grips, offsettable jaw faces allow testing of irregular specimens or components (e.g. lap shear).
Available for 250 N grips, the optional precision specimen loader improves the alignment and setup process for testing thin films and foils, reducing variability in test results while improving ergonomics and safety.
The optional specimen holding device allows the operator to close the grips with their fingers out of the test space.
Available in rubber-coated, serrated, smooth-ground, brake-lining (HFC), line-contact, wave-profile, and vee-serrated.
For high and low temperature testing requirements, the temperature rated pneumatic grips provide a convenient method for clamping a variety of materials within a temperature controlled environment.
Catalog no. CP122505, CP124893, CP125726, CP126077
Catalog no. 2732-008,2732-009
Catalog no. 2732-006
For Measuring Strain in Highly Elastic Materials
Designed for use with both single-column and dual-column universal testing systems, long-travel (XL) extensometers can be used to measure specimen elongations up to 30 in or 750 mm. The XL is designed to clamp directly onto a specimen quickly and easily. It will adjust to incremental gauge lengths ranging from 0.5 in to 5 in, or 10 mm to 200 mm.
Principle of Operation
The high elongation extensometer is designed to clamp directly onto a specimen quickly and easily. It will adjust to incremental gauge lengths ranging from 0.5 in to 5 in, or 10 mm to 200 mm. The XL can accommodate up to 10 in of clamp displacement, and is specifically designed to permit testing the sample through rupture without damaging the extensometer or otherwise disrupting the test routine. The XL extensometer is based on a pair of carefully counterbalanced clamp assemblies which drive a potentiometer through connecting cables. Both clamps move freely, but any increase in the separation or differential motion will advance the transducer. The upper and lower specimen clamps are separately counterbalanced and guided on a polished and ground shaft with linear bearings so that none of the extensometer’s weight is applied to the specimen.
Features and Benefits
| Available Models | ||
|---|---|---|
| Catalog Number | Compatible Frame | Full Scale Travel |
| 2603-084 | Single Column | 250 mm |
| 2603-086 (Extra Long Travel) | Single Column | 750 mm |
| 2603-080 | Dual Column | 250 mm |
| 2603-085 (Extra Long Travel) | Dual Column | 750 mm |
Instron’s Advanced Hydraulic Wedge Action Grips deliver reliable, high‑performance specimen gripping for both static and dynamic materials testing. Engineered for versatility, these grips support dynamic tests up to 500 kN and static tests up to 600 kN, making them ideal for demanding metals and composites applications.
Interchangeable jaw faces accommodate a wide range of flat and round specimens, while the self‑adjusting wedge mechanism maintains a constant, controlled clamping force throughout the test — independent of the applied load. As long as an active hydraulic pressure supply is connected, the grips automatically apply the defined clamping force to ensure greater consistency and repeatability across tests.
Each grip functions independently of the other, an external hydraulic supply providing pressure to both open and close the grips. When gripping pressure is applied, the relative vertical position of the specimen/jaw faces remains unchanged to prevent specimen load generation during the gripping process. Once the grip faces contact the specimen the hydraulic pressure produces a vertical force on the grip head. The grip force will remain constant as the design automatically compensates for specimen thickness changes.
| Catalog no. | Static Load Capacity | Dynamic Load Capacity | Temperature Range | |
| 2742-301 | ±30 kN | ±30 kN | 4° C to 65° C | Learn More |
| 2742-450 | ±50 kN | n/a | 4° C to 65° C | Learn More |
| 2743-401 | ±130 kN | ±100 kN | 4° C to 65° C | Learn More |
| 2742-501 | ±312 kN | ±250 kN | 4° C to 65° C | Learn More |
| 2742-601 | ±600 kN | ±500 kN | 4° C to 65° C | Learn More |
Catalog no. 2743-401
Catalog no. 2742-501
The optional specimen alignment device (cat no. CP135054) is recommended for improving alignment consistency, helping achieve greater repeatability and accuracy in test results. It is compatible with the 2743‑401, 2742‑501, and 2742‑601 grip models.
Piggyback load string adapters allow high-capacity grips to remain on the load string while providing a connection to utilize a wide variety of other fixtures.
Instron’s hydraulic grip pumps provide precise and dependable clamping force for demanding, high‑capacity testing applications, powering grip systems up to 600 kN.
Check out our 50 kN and 100 kN pneumatic wedge action grips (catalog no. CP137834 and CP137835).
Instron’s static axial clip-on extensometers provide a quick, reliable solution for accurate strain measurement across a wide range of materials, including plastics, metals, and composites. Decades of strain measurement expertise are reflected in their lightweight, rugged cross‑brace design, which eliminates errors from physical distortion, built-in protection to reduce damage caused by over-extension, and low‑force attachment arms that help prevent knife‑edge slippage during testing. All clip-ons in this series can meet ASTM E83 and ISO 9513 requirements and are supplied with factory test certificates that document the individual performance of each unit.
The 2630 Series axial extensometers are designed for fast, repeatable setup and reliable operation. Their patented cone‑latch mechanism provides precise gauge length locking during attachment, then automatically self‑releases to allow testing to begin without additional setup steps. This eliminates manual pin removal and prevents accidental testing at a locked gauge length.
| Catalog Number | Gauge Length (Metric) | Travel (Axial) |
|---|---|---|
| 2630-120 | 8 mm | ±50% |
| 2630-101 | 10 mm | ±10% |
| 2630-102 | 10 mm | ±50% |
| 2630-105 | 25 mm | ±10% |
| 2630-106 | 25 mm | +50% |
| 2630-107 | 25 mm | +100% |
| 2630-111 | 50 mm | ±10% |
| 2630-112 | 50 mm | +50% |
| 2630-113 | 50 mm | +100% |
| 2630-123 | 75 mm | +10% |
| 2630-117 | 80 mm | +10% |
| 2630-118 | 80 mm | +50% |
| 2630-119 | 100 mm | +50% |
| Catalog Number | Gauge Length (US Customary) | Travel (Axial) |
| 2630-121 | 0.3 in | ±50% |
| 2630-103 | 0.5 in | ±10% |
| 2630-104 | 0.5 in | ±50% |
| 2630-108 | 1.0 in | ±10% |
| 2630-109 | 1.0 in | +50% |
| 2630-110 | 1.0 in | +100% |
| 2630-114 | 2.0 in | ±10% |
| 2630-115 | 2.0 in | +50% |
| 2630-116 | 2.0 in | +100% |
Need to measure transverse strain? Check out our transverse clip-on extensometers.
For delicate or very small specimens, or labs testing a wide variety of specimen geometries, non‑contact strain measurement can offer greater flexibility.
The W-6280 Series is a long gauge length clip‑on extensometer featuring a unique pull‑apart design that helps protect the instrument during specimen fracture. The quick‑attach kit enables straightforward mounting to the specimen. Due to their larger frame size, W‑6280 Series extensometers require two‑handed attachment and use a gauge length setting pin.
| Catalog Number | Gauge Length (Metric) | Travel (Axial) |
|---|---|---|
| W-6280-200 | 200 mm | +12.5% |
| W-6280-250 | 250 mm | +10% |
| Catalog Number | Gauge Length (US Customary) | Travel (Axial) |
| W-6280-8 | 8 in | +12.5% |
A clip‑on extensometer attaches directly to the specimen at a fixed gauge length and measures the change in distance between two contact points as the specimen deforms, providing a direct measurement of strain during the test.
Fibers and filaments tend to be relatively thin materials compared to most, but within these types of materials there can be a wide range of thicknesses and tensile strengths that determine the appropriate gripping method. To properly hold onto these materials, Instron offers two types of grips: a lever action style and an O-ring type.
Please complete the form below and we will be happy to contact you with a response. Our typical response time for an online request is within 1–2 business days. For a faster response, please call +1-800-473-7838.
The Lever Action Grips provide the ideal means to hold single fiber specimens. The grips are simple, lightweight, and symmetrical in design.
Principle of Operation
Lever Action Grips are generally used for the thicker range of fiber filament specimens. These grips have an adjustable clamping force and self-aligning hard rubber coated faces, and they provide ease of operation similar to a clothes pin. An adapter is provided to use the lower grip in the vertical or horizontal orientation to ease specimen insertion.
Application Range
| Specifications | |
|---|---|
| Capacity | 5 N |
| Specimen Diameter | 2.5 mm |
| Temperature Range | -10°C to +100°C |
| Upper and Lower Fittings | Type Om (12 mm connection with 6 mm clevis pin) |
| Misc. | Includes a Type A (hook) for the upper grip |
The O-ring type of grip is designed to hold very small diameter fiber specimens during tension testing. The rubber V-groove provides a gradually increased frictional hold on the specimen and helps reduce grip face pinching and subsequent specimen jaw breaks. Special considerations are built into the design, where the U-shaped bend provides sufficient area for specimen loading.
Principle of Operation
The O-ring fiber grip utilizes two rubber O-rings sandwiched between two knurled wheels. These wheels thread on a stud and compress the O-rings to achieve desired gripping force on the specimen.
Application Range
| Specifications | |
|---|---|
| Capacity | 0.825 N |
| Specimen Diameter | 1 to 25 microns |
| Temperature Range | -10°C to +100°C |
| Upper and Lower Fittings | Type Om (12 mm connection with 6 mm clevis pin) |
| Misc. | Includes a Type A (hook) for the upper grip |
Not sure which fiber filament grip fits your specimen size or capacity needs? Tell us about your application and we will help you find the right solution.
Tell us about your testing needs, and we'll help you configure the right frame, load cell, grips, and software for your lab. Please complete the form below, and we'll respond within 1-2 business days. For a faster response, call +1-800-473-7838 or +1 781 828 2500 if you are outside of the US.
As battery technology continues to evolve across electric vehicles, consumer electronics, energy storage, and beyond, the mechanical testing requirements for battery materials, components, and assemblies are becoming increasingly demanding.
Instron offers a comprehensive range of accessories designed to support battery testing across a wide variety of applications — from tensile and compression testing of electrode materials and separators to puncture, peel, and crush testing of cells and pouches.
The accessories below are compatible with Instron's testing systems and can be configured to meet the specific requirements of your battery testing program. Use the links below to jump directly to the section you need.
Grips | Environmental | Fixtures | Sensors | Software
Instron's pneumatic side action grips feature a versatile design for testing various battery materials and components. They're most commonly used for testing foil, separator film, and welds used in battery production. Adjustable clamping pressure and quick-change jaw faces let these grips adapt to a wide variety of specimens.
Instron's advanced screw side action grips offer similar versatility to pneumatics, using an adjustable or constant gripping pressure instead of pneumatic actuation. These grips are an ideal solution for testing components and welds, thanks to their increased jaw face separation and allowable offset.
High-temperature pneumatic side action grips are useful for tensile testing in both ambient conditions and inside environmental chambers. Inspired by the design of the 2712 Series, these grips use a stainless-steel construction to endure high and low temperatures and are compatible with a wide range of accessories and jaw faces. They can be positioned at 0°, 30°, or 90°, making them fully compatible with Instron's non-contacting video extensometers.
The precision specimen loader streamlines alignment and setup for testing thin films and foils, reducing result variation while improving safety and ergonomics. Designed for use with Instron's 250 N pneumatic side-action tensile grips (catalog no. 2712-052), it uses a detachable alignment clip and linear rail to guide specimens into place, with multiple sizes available for different specimen dimensions.
Instron's wide-body screw side action grips are designed to accommodate cylindrical cells up to 51 mm in diameter. They retain the dual screw actuation, graduated cylinders, and quick-release jaw face design of Instron's standard screw side action grips, while featuring an expanded opening to securely hold larger specimens.
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Materials, cells, modules, and packs used in batteries can perform differently under varying environmental conditions. A testing chamber integrated with the Instron test frame allows specimens to be tested under a range of temperature and humidity conditions while under load — useful for validating performance across the full range of conditions a battery may encounter in service, from cold-climate storage to high-temperature charging cycles.
High-temperature pneumatic side action grips are useful for tensile testing in both ambient conditions and inside environmental chambers. Inspired by the design of our 2712 Series tensile grips, these grips are made of a stainless-steel construction to endure high and low temperatures and are compatible with a wide range of accessories and jaw faces. The grips can also be positioned at 0, 30, and 90 degrees, making them fully compatible with our non-contacting video extensometer products.
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The pneumatic 90° peel fixture is designed for electrode adhesion testing. It helps an operator align and clamp a specimen quickly and consistently while maintaining a 90° peel angle from start to finish, improving repeatability and throughput and reducing operator involvement compared to a standard manually-controlled peel fixture.
The standard 90° peel test fixture consists of a bearing-mounted sled linked to the testing machine's crosshead by a cable and pulley system. Its T-slotted sled allows the substrate clamps, which secure the substrate to the sled, to adjust to a variety of substrate widths.
Designed in accordance with EN 14477 for puncture testing of separator film and other flexible materials, this fixture pairs a lower clamping mechanism with an upper probe of either 0.8 mm or 1 mm diameter. The lower fixturing includes probe guidance and a means to hold the specimen taut throughout the test.
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To reduce slippage during puncture testing, pneumatic puncture fixtures are available for testing in compliance with EN 863, ASTM F1306, and EN 14477. The specimen is held in place by pneumatically actuated clamps that provide consistent, stable clamping force throughout the test.
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Designed for ease of specimen preparation and throughput, this fixture is optimized for testing the adhesion strength of electrodes to their current collector. It's built with five specimen locations, allowing five consecutive tests without additional specimen preparation in between. The lightweight upper and lower fixtures are separate parts for simplified installation and cleaning, and the upper fixture is spherically seated and lockable to ensure parallelism between both fixtures during testing.
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Instron offers a wide range of flex/bend fixtures for specimens from a few millimeters up to 600 mm in length, and for loads from a few newtons to several kilonewtons. Three- and four-point bend tests of raw materials, battery materials, and cells are all possible using standard and custom fixtures that can incorporate displacement sensors and mount on all frame types. A high-accuracy version of the most common 5 kN flexure fixture (catalog no. CP139080) integrates a digital displacement gauge, measuring specimen displacement to an accuracy of 1 µm.
This hemming test fixture has a maximum force capacity of 20 kN and is designed specifically for tight-radius bend testing of sheet metals in accordance with VDA 238-100. Punch radius, roller diameter, and roller distance are constrained to reduce lab-to-lab variability. The fixture is used to evaluate the formability and crash behavior of the high-strength metal casings that house and shield EV batteries.
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Instron's coefficient of friction fixture measures the static and kinetic coefficient of friction of plastic film and sheeting. It's commonly used to measure the friction forces of separator film material used in batteries, helping characterize how separator layers behave during cell assembly and handling.
This custom-made prismatic battery weld test fixture features a cantilever-style hook and alignment fixture for testing the cumulative welding of anode/cathode tabs to their current collector. A crosshead extension provides added clearance around the specimen and alignment device when using a single-column frame, and the fixturing can be swapped to accommodate different prismatic cell or weld sizes by replacing the specimen alignment fixture and lower hook.
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Please complete the form below and we will be happy to contact you with a response. Our typical response time for an online request is within 1-2 business days. For a faster response, please call +1-800-473-7838.
Designed for clamping busbar and other battery components, this fixturing allows for adjustable sizing and clamping force for testing the various welds used in battery production. Its adjustable design accommodates a range of busbar geometries without requiring fixture changeover between specimens.
These custom-made platens are designed for measuring compressive load, swelling, and compressive strain in batteries. Four integrated LVDT mounting locations pair with a spherical seat that can be locked for parallelism or left unlocked to determine swelling in separate regions during charging and discharging. The lower platen includes a threaded hole pattern for mounting specimen guides for stack testing of multiple cells, and the platens are temperature-rated from -40°C to 150°C for use inside an environmental chamber.
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These compression anvils measure a material's compressive load, strain, and electrical resistivity. The set includes an upper spherical seat that ensures platen parallelism and electrical isolation from the frame, with integrated contact plates for accurate resistance measurement — plate geometry and material can be customized to fit specific testing needs. When connected to an ohmmeter, data collection integrates seamlessly with Bluehill ® Universal, synchronizing load, displacement, and resistivity data in a single acquisition.
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This digital LVDT provides a repeatable, highly accurate method of displacement measurement for battery materials, components, and assemblies. Easy to set up and automatically recognized by the software, it delivers high-precision, localized displacement or strain measurement in tension, compression, and flex tests, including specialized applications like measuring cell expansion during charging/discharging cycles.
LVDTs are a valuable addition to a test system for precise, localized strain measurement, particularly useful in tension and compression applications where fixture or system compliance needs to be eliminated. Instron offers a suite of LVDTs for standard conditions, plus specialized versions like catalog no. CP130176 for extreme temperatures from -40°C to 200°C.
The AVE3 advanced non-contacting video extensometer delivers precise strain measurement with micron-level accuracy for tensile, compression, and bend testing. Compliant with ISO 9513 and ASTM E83, it works across small to large gauge lengths and low to high elongations, and handles sensitive materials like films, explosive composite failures, and non-ambient testing in a chamber or fluid bath.
This thermocouple signal conditioner is modified with wiring to Instron's sensor conditioner module for live data capture and display of temperature during testing. It comes factory-programmed for type J and K thermocouples, configured for -100°C to 350°C, and can be reconfigured by the user depending on the measurements needed.
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A standard USB barcode and QR code scanner allows sample and specimen information to be entered directly into Bluehill Universal testing software, cutting down on manual data entry and reducing transcription errors. Any barcode or QR code that includes a tab function can populate text or number fields in the software automatically.
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Bluehill Central is a laboratory management tool that enables centralized, remote management of Bluehill Universal software across multiple Instron test frames. It allows you to remotely manage all Bluehill Universal users, test templates, results, file revision approvals, and audit trail data from multiple systems in one place.
The Bluehill Universal Application Programming Interface (API) allows system administrators to build custom interfaces for various applications and devices, automating pre- and post-test actions such as exporting, importing, and starting tests. The API is included with the standard purchase of Bluehill Universal and is accessible through standard .NET-based programming.
Not sure which battery testing accessory fits your application? Tell us about your testing requirements and we will help you find the right solution.
Please complete the form below and we will be happy to contact you with a response. Our typical response time for an online request is within 1-2 business days. For a faster response, please call +1-800-473-7838.
This extensometer can be attached to round and flat specimens to perform tensile, compression, and cyclic tests in environmental chambers up to 600°C with no cooling required. A quick attach kit for mounting on specimens is included. The device has a low operating force that prevents it from affecting the test.
| Specifications | |
| Gauge Length | 25 mm |
| % Travel (Axial) | +50% / - 8.0% |
| Specimen Size (Round) | Up to 15 mm diameter |
| Specimen Size (Flat) | Up to 50 mm wide for specimens up to 6.35 mm thick Up to 19 mm wide for specimens 6.35 mm to 12.5 mm thick |
| Catalog Number | CP118413 |
2632 Series
High temperature strain gauge extensometers suitable for use up to 1000°C in a resistance furnace. These extensometers are particularly suited to low cycle fatigue, creep, and stress relaxation testing. The extensometer attaches to a specimen using ceramic wrap-around cord (supplied) or by using a spring type attachment (catalog no. 2632-061). These extensometers are compatible with 3117-150, 3117-152, and 3117-200 furnaces.
| Gauge Length | % Travel (Axial) | Chisel and End Rods | Catalog No. |
| 12.5 mm | +20% / -10% | Quartz | 2632-054 |
| 12.5 mm | +20% / -10% | Alumina | 2632-055 |
| 25 mm | +10% / -5% | Quartz | 2632-056 |
| 25 mm | +10% / -5% | Alumina | 2632-057 |
E-Series
The E-Series high temperature extensometer is a self-supporting, side-entry axial strain gauge designed for use in furnaces with a slot for extensometers or with an induction heating system. The device uses a ceramic fiber cords to attach the extensometer to the specimen.
| Gauge Length | % Travel (Axial) | Catalog No. |
| 25 mm | ± 20% | W-E418-25 |
| 50 mm | ± 20% | W-E418-50 |
