JR12 Spec Sheet

ABOUT JR12 OPTICAL ROTARY ENCODER

Quantum Devices, Inc. Model JR12 Optical Rotary Encoder provides an improved feedback solution in applications typically using pancake resolvers with same threaded shaft and jam nut mounting. With an overall height of less than one inch and the stability of a bearing encoder design, the model JR12 can provide significant performance upgrades in applications limited by traditional resolvers or modular encoder solutions. Output options consist of a quadrature with index pulse and three-phase commutation. A flexible member allows for much greater tail shaft run out and TIR than can be tolerated by modular encoder designs, plus the mounting flange eliminates the need for expensive servo mounting clips.

Design Features:

• Replaces size 15 pancake resolver
• Bearing design simplifies encoder attachment
• Resolutions up to 20,000 lines per revolution
• 4, 6 or 8 pole commutation
• Eliminates expensive mounting servo clamps
• Accommodates resolver type ¼” threaded shafts
• High noise immunity
• Cost competitive with modular encoders
• 500 kHz frequency response
• RoHS construction