Excellent Ball Screw Replacement


The GSM Series of linear actuators from Exlar provides a cost effective solution, perfect for replacing ball screw actuators. This compact design incorporates Exlar's patented roller screw technology with an integral brushless servo motor for medium to high performance motion control applications. The GSM Series offers a completely integrated actuator, competively priced with low performance, short-lived ball screw actuators. The GSM design provides a smaller package with higher speed and load capacity than ball screws and other traditional rotary to linear conversions. GSM Series also offers 5 times the travel life of similarly sized ball screw actuators. Selection of the proper feedback configuration allows GSM Series actuators to be powered by nearly every brand of brushless motor amplifier on the market. This flexibility allows GSM Series actuators to be incorporated into the highest performance single and multi-axis motion control systems in use today. In applications varying from food and beverage packaging, to multi-axis turning centers to air-craft assembly, the GSM Series of actuators show incredible performance and durability.

GSM Series units can be used in advanced closed-loop servo systems when velocity and positioning is required. Position feedback can be delivered in a number of different forms including resolvers, encoders or internally mounted linear position feedback sensors.  GSM Series actuators interface with nearly any servo amplifier on the market.

Rockwell Encompass Partner ProgramExlar Corporation is part of the Rockwell Automation PartnerNetwork program, for more information click here.


  • 2.25, 3.3 and 3.9 inch frame sizes
  • 3, 4, 5.9, 10, 12 and 18 inch strokes
  • 0.1, 0.2, 0.4, 0.5 and .75 inch lead roller screws (0.75 lead on 10" stroke and under)
  • 7 to 75 lbf-in torque motor availability
  • Up to 33 inch per second linear speeds
  • 92 to 1983 lbf thrust capacity depending on motor selection
  • Front flange, rear flange, rear clevis, trunnion, side, double side or extended tie rods mounting options
  • Encoder feedback with MS style connectors
  • Molded and shielded cables available
  • Black anodized and gray aluminum housing
  • Cost competitive with ball screw actuators
  • 5 times the life of a similar sized ball screw actuator
  • UL Class H insulation system compliant
  • IP54 or IP65 sealing
  • CE mark