HYDRAULIC POWER UNIT
3621 SERIES | FAQS

What are the core features of the 3621 Series HPU?
The 3621 series HPU includes an array of innovative features as standard and builds upon the premium qualities of the outgoing 3520 series range. The 16 main features are categorized into four sections: Safety, Reliability, Adaptability and Sustainability, with notably significant enhancements made to the operational noise levels, dimensions, weights and overall efficiency of the new models.

Does this product range completely replace the current series?
Yes, the 3621 series will directly replace the current 3520 series. The new models are available in a variety of 50Hz and 60Hz variants with flow rates ranging from 38 to 600 Liters/min (10 to 160 Gallons/min).

Is the 3621 series compatible with all of Instron’s hydraulically driven actuator systems?
Yes, the range can be configured to support Instron’s extensive range of fully integrated Servohydraulic Dynamic and Fatigue material testing systems; ranging from 25kN up to 5000kN.

Is it possible to upgrade a previous version of the HPU with the new 3621 series?
Yes, for most simple use cases. However, this is application specific and it is recommended that you contact your local sales office for further guidance.

Is this new product exactly the same as the current 3520 series product?
No. Although there are direct equivalent models and the core purpose of the product has not changed, there are small technical differences (e.g. flow rates, dimensions, weight, etc.) that may need to be considered.

Will Instron be able to support existing HPU’s already in the field?
Yes, the 3520 series range will remain fully supported as per the official Instron product lifecycle process. Please refer to the relevant section of the website for further guidance.

What help is available when selecting a Servohydraulic system using the new HPU?
To help with selection, direct product alternatives are available. As with any previous enquiry, Instron provides highly technical design support. Please contact your local sales office for further guidance.

Will users require any specific training to operate the new 3621 series range of HPU’s?
No. The controls are user friendly, intuitive and the product is supplied with a user manual.