Mosrac's Inductive Rotary Absolute Encoders

Overview of inductive rotary absolute encoders

An absolute encoder of the highest quality in as small a size as possible.

Mosrac's absolute rotary encoder uses inductive technology, featuring a hollow shaft, high precision, high reliability, and non-contact. Our inductive rotary absolute encoders are compact, reliable, and precise, designed for tight spaces and precision motion control with advanced magnetic resistance and high accuracy.

Featuring an ultra-lightweight, flat design, the absolute inductive rotary encoder fits and operates wherever it is needed, including aerospace and defense, harsh environments, and industrial, medical, robotics, servo BLDC motors, cobots & robotic joints, and automotive applications.

C-Series Inductive Rotary Encoders

Ultra-thin and lightweight, with a large hollow shaft and non-contact design — ideal for compact applications with limited space. It can be seamlessly installed in robot joints or multi-axis automation equipment. The encoder is suitable for position feedback or improving commutation in frameless motors.

The non-contact absolute C-series encoder meets stringent industrial environment standards and offers a cost-effective, accurate, and reliable position sensing solution; customization options are available.

Model		OD (mm)	ID (mm)	Thickness (mm)	Weight (g)	Resolution (bit)		Accuracy (°)		Max.speed (rpm)		Moment of Inertia (kg·mm²)
C0214		14.8	2	3.6	2	15~17		±0.03		6000		0.006
C0216		16.8	2	3.6	2.5	15~17		±0.025		6000		0.008
C0218		18.8	2	3.6	3	15~17		±0.02		6000		0.01
C0420		20	4	6.5	4	15~17		±0.05		4000		0.01
C1040		40	10	8	10	17~19		±0.015		6000		0.4
C1752		52	17	8	13	18~20		±0.01		8000		1.18
C2560		60	25	8	18	18~20		±0.008		8000		2.43
C3580		80	35	8	30	18~20		±0.008		8000		8.6
C48100		100	48	8	40	19~21		±0.006		6000		19.7
C70120		120	70	8	50	19~21		±0.006		6000		40
C90140		140	90	9	75	19~21		±0.006		6000		99
C120180		180	120	9	120	20~22		±0.003		4000		239.2
C172247		247	172	9	180	20~22		±0.003		4000		795.6

Supply voltage	Elec. Conn.	Output protocol		Operating temperature	Max. IP Grade
5-30V	RS-422 Shielded cable	SSi、BiSS-C、RS-422 UART		-20℃ - +60℃	IP 40

D-Series Inductive Rotary Encoders

The product includes three parts: a stator and two rotors.

It is perfect for compact applications where space is tight and can be easily installed in robot joints or multi-axis automation systems.

The D-series encoder has two separate position-detection and signal-output systems, allowing for redundant operation and greatly increasing reliability.

Customization options are available to best suit customer needs.

Model		OD(mm)	ID(mm)	Thickness(mm)	Weight(g)	Resolution(bit)		Accuracy(°)		Max.speed(rpm)		Moment of Inertia(kg·mm²)
D1034		34	10	7.6	10	17~19		±0.015		6000		0.11
D2050		50	20	7.6	20	17~19		±0.015		6000		0.7
D2158		58	18-21	7.6	30	18~20		±0.01		6000		1.66/1.58
D3670		70	36	7.6	35	18~20		±0.01		6000		3.4
D3178		78	31-35	7.6	40	18~20		±0.01		6000		4.5/4.3
D5690		90	56	7.6	50	19~21		±0.01		6000		9.8
D76110		110	76	7.6	65	19~21		±0.01		6000		21.2

Supply voltage	Current	Output protocol		Operating temperature	Max. IP Grade
5-24V	＜240 mA	SSi、BiSS-C、RS-422、RS-485、UART、ABZ		-20℃ - +60℃	IP 40

DP-Series Inductive Rotary Encoders

The DP-series encoders consist of a single stator and an inner and outer dual rotor. It uses electromagnetic fields and recognition technology to implement a dual-encoder design on one side within an ultra-thin, narrow form factor. It features high precision, low power consumption, and an ultra-thin, compact structure.

The DP dual encoder on one side features two independent detection and signal output systems, making it ideal for robot joints or multi-axis automation equipment with limited space.

Customization options are ideally available to meet customer needs.

Model		OD(mm)	ID(mm)	Thickness(mm)	Weight(g)	Resolution(bit)		Accuracy(°)		Max.speed(rpm)		Moment of Inertia(kg·mm²)
DP1038		38	10	3.6	10	17~19		±0.015		6000		0.05/0.16
DP1646		46	16	3.6	12	17~19		±0.015		6000		0.17/0.4
DP2055		55	20	3.6	16	17~19		±0.015		6000		0.36/1.0
DP3065		65	30	3.6	20	18~20		±0.01		6000		0.88/2.06
DP3575		75	35	3.6	25	18~20		±0.01		6000		1.84/3.95
DP4585		85	45	3.6	30	18~20		±0.01		6000		3.4/6.33
DP55100		100	55	4	45	19~21		±0.01		6000		6.54/13.5
DP85130		130	85	4	60	19~21		±0.01		6000		6.54/13.5

Supply voltage	Current	Output protocol		Operating temperature	Max. IP Grade
5V	＜80 mA	SSi、BiSS-C、RS-422、RS-485		-30℃ - +100℃	IP 40

Features & Benefits:

● Highest performance in the smallest installation space

● Ultra-flat, lightweight, and narrow (minimum thickness 3.6mm)

● Super compact, Frameless design without bearings

● Resistant to electric & magnetic fields

● High accuracy and resolution

● Absolute hollow shaft

● Wide mounting tolerance

Applications:

● Robotics, Cobots, Medical Robots & Robotic Joints

● Direct integration for Servo, BLDC motors

● Stepper motors

● Medical equipment

● Industrial automation

● Metrology

● High-speed motion control

● UAV & Drones, Gimbals

● Stabilized Platforms, Rotary stages

Frequently bought together - Magnetic encoders

Direct drives need high-quality position signals to ensure optimal performance. Perfect measuring signals can enhance the surface quality of machined workpieces, reduce the machine frame's vibrations, minimize velocity-dependent motor noise, and prevent excessive heat generation in the motor.

Mosrac recommends using a magnetic encoder to enhance the accuracy, speed stability, and thermal behavior of direct drive axes. Because there is no mechanical transmission between the encoder and the feed unit, the position signals are not susceptible to inaccuracies or delays.

Custom combinations are available on request and contact us.

• 

  Frameless Inrunner Motor

• 

  Frameless Outrunner Motor

• 

  17-bit S-Series Magnetic Encoders

• 

  24-bit T-Series Magnetic Dual Encoders

• 

  PT-Series Magnetic Encoder

Download

• 

  Mosrac Inductive Rotary Absolute Encoder Brochure.pdf

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