NMTG External Holdbacks/Backstops (CLS Type) NHBU E2E3
The NMTG NHBU Series E2/E3 Centrifugal Lift-Off Sprag is a bearing-supported backstop clutch designed for reliable anti-runback protection in shaft-mounted applications, offering wear-free high-speed operation with flexible torque arm and sealed cover configurations.
Features
- Bore range: up to 150mm
- Nom. Transmitting torque: 33908Nm
- Designed with integrated ball bearings for assembly with customer connecting components
- Requires grease lubrication for reliable operation
- Suitable for backstopping applications with an E2 torque arm configuration
- Torque arm incorporates an integrated stop bolt for secure reaction torque restraint
- When fitted with an E3 type C cover, the keyway must be sealed to prevent lubricant loss
- Suitable for installation on through shafts or shaft ends
- Provides dependable anti-runback protection for industrial drive systems

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