APS Reaction Mass

improves performance of the shaker

Reaction masses for APS exciters — compatible with models APS 113, APS 400 and APS 420 — extend performance into lower frequency ranges while allowing either horizontal or vertical force to be applied directly through the shaker body.

With an armature weight of 13.2 kg (29 lb) and a total system weight of 47 kg (103 lb), they provide the stability and inertia needed for precise, controlled excitation. Using two blocks, sufficient reaction mass is achieved to deliver the rated force down to 1.8 Hz, even in free body mode.

Product details

Available for APS 113, APS 400, APS 420 to
Armature weight including Reaction Mass: 13.2 kg (29 lb)
Minimum frequency for 30 lb Force: 1.8 Hz
Total shaker weight including Reaction Mass: 47 kg (103 lb)*

*_{sample shaker APS 113}

_{For further details, please refer to the technical data sheet. Subject to change without notice.}

Similar products

APS 0109

Zero Position Controller

The APS 0109 automatically controls the zero position of a vibration exciter irrespective of its load. It is essential to employ a position controller of type APS 0109 especially when working with an air-bearing vibration shaker without any integrated automatic load-compensation.

Datasheet

APS Auxiliary Table Kits

For transverse and axial base excitation

Enhance your shaker system’s versatility with auxiliary mounting tables that provide a stable platform for both horizontal and vertical setups.

Designed to accommodate components, model structures, accelerometers and other low-frequency sensors, they enable precise, dependable vibration testing across a wide range of applications.

APS Handles & Bars

for easier transport & handling

Handles suitable for vibration exciter APS 113, APS 400 and APS 420 vibration exciters.

APS Modal Stinger Kit

to apply force to a structure under test

The modal stinger kit provides a precise connection between the shaker armature and the test structure, ensuring efficient transmission of axial force while minimizing unwanted cross-axis inputs caused by complex motion.

Designed for optimal decoupling, the stingers perform best at their maximum effective length and are available in four different sizes to suit a wide range of setups. Compatible with APS 113, APS 113-AB, APS 400 and APS 420 vibration exciters, the kit is built for durability and can withstand axial forces of up to 900 N (200 lbf), making it ideal for reliable and accurate modal testing.

APS Steel Cable Kit

Required to use the shaker in "Free Body Mode"

The APS steel cable kit enables operation in “Free Body Mode,” allowing the shaker body itself to act as the reaction mass for efficient force transmission to the test structure.

By suspending the shaker above ground with robust suspension lines, it provides a flexible and convenient setup for applying force parallel to horizontal surfaces. Compatible with APS 113, APS 113-AB, APS 400 and APS 420 exciters, the kit includes four sets of suspension lines for stable operation. For optimal force transfer to the test structure, it can be combined with a modal stinger kit.

APS Trunnion Base

Set up your shaker in any axis from vertical to horizontal

Allows the APS 420 ELECTRO-SEIS® Shaker to be set up in any axis from vertical to horizontal.

The shaker internal suspension system may be adjusted to center the armature within the stroke range for all orientations of its force axis.

We are here to help!

Do you have questions about our products or need a quote? Don't hesitate to contact us! Our experts will provide you with personalized, non-binding advice.

Bruce Swanson
APS Office Manager
California

Phone: +1 (949) 234 9791