Electric Servomotor Brakes

As engineering experts in designing the most reliable pneumatic clutches and brakes, Nexen Group has taken the next step and is redefining the electric brake market by creating the Evolve line of Electric Servomotor Brakes.

Nexen’s Zero Backlash Electric Servomotor Brakes are spring engaged and electrically released, providing customers with the long-lasting performance they have come to expect from Nexen Group.

About Nexen Electric Servomotor Brakes

With a selection of standard industry frame sizes, common bore sizes, and a variety of mounting configurations, Nexen’s new Evolve Electric Servomotor Brakes offer the spring engaged, electrically released solution for a more robust machine design.

Standard Voltage Option: Available in 24 VDC
Frame Sizes: Industry-standard 155 mm, 125 mm, and 100 mm frame sizes
Zero Backlash Holding: Nexen utilizes a flexible rotor and flexible discs for true Zero Backlash up to 100% of holding torque.
Zero Backlash Clamp Collar: The easy-to-install split-hub shaft collar, with a backup keyway, prevents backlash for smooth stopping and precision holding up to and beyond the minimum holding torque.
Ease of Installation: An air gap is set at the factory, so there’s no need for initial adjustment or fine-tuning in the field. Rated torques are achievable out of the box.
Overhung Load: Double Row Angular Contact Bearing delivers high overhung load capacity and axial rigidity.
Environmental Protection: Sealed housing meets IP65 dust and waterproof standards.

Key Feature

100 mm, 125 mm and 155 mm frame sizes available
Easily mounts between a servo/stepper motor and a gearbox
Spring engaged – electrically released
Two friction interfaces for increased torque
Zero Backlash via flex disc and rotor
Double Row Angular Contact Bearing
Shaft with integrated clamp collar
24 VDC standard coil
Fast delivery times
Made in the USA

Applications

Food Production
Robotics
Converting
Metal Processing
Gantry
Wood Processing

Cross-Sectional Drawing

Operating Detail

The Nexen Electric Servomotor Brake is spring engaged, electrically released.
In a de-energized state, the double-sided friction disc assembly is constrained between the output flange and the armature plate by compression springs.
Torque is transmitted through the shaft to the armature plate via flexible discs, resulting in a Zero Backlash connection up to 100% of holding torque.
When energised, the resulting magnetic flux counteracts the spring force and pulls the armature plate back, allowing the friction disc assembly to flex back into a relaxed position so that the hub can spin freely.
If power is lost or interrupted, the unit will revert to its engaged state, clamping the friction disc and preventing rotation.

Guidelines

Nexen’s Electric Servomotor Brakes are designed as a holding brake, capable of Emergency Stops. Not intended for dynamic stopping applications.

Operating Nexen’s Electric Servomotor Brakes over their rated temperatures will adversely affect brake performance. The brake’s actuation and torque ratings should be validated in the application environment to confirm the proper functionality and duty cycle.

For more information
call Norman G Clark ☏ 03 9116 9200
or visit nexengroup.com

Rotary Motion Control

Experience unmatched precision and reliability with Nexen’s Precision Rotary Motion technology. Our range includes highly precise rotary drive systems, powerful rotary brakes, and mechanical torque limiters, ensuring impeccable performance with zero backlash.