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The iHSV57 series was the original recommended motor for OSSM builds before 2024.
This motor is no longer recommended for new builds. Use the 57AIM30 Gold Motor instead.
The 57AIM30 Gold Motor replaced the iHSV57 as the standard build motor due to several significant improvements:
FactoriHSV5757AIM30 Gold Motor
Length100% (baseline)40% shorter
Weight100% (baseline)50% lighter
Peak force100% (baseline)30% higher
Cost100% (baseline)~20% cheaper
Over-torque handlingMotor disablesConfigurable torque reduction

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Existing iHSV57 Builds

If you have an existing OSSM with an iHSV57 motor:
Your build remains fully functional. The iHSV57 is a capable motor—you do not need to upgrade unless you want the benefits of the Gold Motor.

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Upgrading to Gold Motor

The 57AIM30 Gold Motor is a drop-in replacement for the iHSV57:
  • Same NEMA23 mounting pattern
  • Same shaft diameter
  • Compatible with existing actuator hardware
If upgrading from iHSV57 to Gold Motor, you may need to add a 1500µF capacitor (minimum 50V) to PCB versions older than V2.3 to handle regenerative braking.

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Programming Requirements

Like all OSSM motors, the iHSV57 requires programming to set the steps per revolution to 800. Refer to the motor programming guide for instructions.