Aerospace - Military Slip Rings

Poly-Twist or Twist Capsules

Highly Reliable Slip Ring Substitute for Limited Rotation Applications Poly-Twist Capsules

Moog is a leading designer and manufacturer of slip rings, devices that can be used in any electromechanical system that requires unrestrained rotation while transferring power and / or data. However, some applications require only limited rotation.

To fill the need for limited rotation applications, we introduced Poly-Twist^™ Twist Capsules, a reliable slip ring substitute that provides up to 1-1/2 turns of rotational freedom. For over 50 years, we’ve designed and manufactured thousands of units - from miniature to very large assemblies - for a variety of applications.

Features

Eliminates sliding contacts and associated electrical noise
Bearingless units available
No shearing, pulling, sliding or abrading occurs during operation - flexible tapes provide connections between oscillating and stationary circuits
Provides rotational freedom - up to 1-1/2 turns in each direction from center line
Low and consistent torque
Long performance - life often measured in the millions of cycles
Low outgassing
High reliability for space / vacuum applications
Can save weight and increase reliability by replacing flexible cables and harnesses that wear and break
High frequency and power circuits available
Multiple methods available for termination of electrical interfaces
Mechanical stops for over-travel protection
Existing designs can be modified to meet custom requirements
Number of circuits limited only to space availability

Model	Circuits	Current	Voltage	Size (Dia" X L") Metric	Operational Speed	Through Bore
Poly-Twist	Various	Signal to 20 amps	Millivolts to 200 volts	Various	Limited Rotation	Various

Integration Capabilities

Coax cable
Resolvers
Fiber optic channels
RF joints
Motors
Hydraulic / pneumatic (fluid) joints
Servo actuators

Aerospace - Military Slip Rings

Poly-Twist or Twist Capsules

Typical Applications

Poly-Twist Technical Data Sheet

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