Mosrac direct drive torque motors

c-series-c3580-inductive-encodersOuter diameter ( OD ) : 80mm

18-20 bit (23 bit extension) | Max 8000 rpm | Single turn | 5~30V 


C3580 uses inductive technology to measure angle accurately. It provides true absolute position at power-up, without any movement. The non-contact design ensures high precision and stable performance, even in harsh environments.


The encoder supports BiSS, UART, and SSI interfaces, with resolution up to 20 bits per revolution. Custom options are available to meet specific needs.

Specification

GeneralMechanical
resolution(bit)18-20

outer/inner

/height

(mm)

80/35/8
maximum static error±0.008°

allowable mounting eccentricity

(mm)

±0.1
repetitive error(lsb)±2

allowable axial mounting tolerance

(mm)

0.6±0.1
maximum operational speed(rpm)8000

rotor inertia

(kg·mm2)

8.6
measurement rangesingle turnweight(g)30
rotation directionadjustable cw/ccw

material

(stator/rotor)

FR-4
EnvironmentalElectrical
emc

iec 61000-6-2

iec 61000-6-4

supply voltage5~24v
operating temperature-40℃-+125℃current consumption120~130ma
storage temperature-50℃-+100℃serial output

6/8-pin connector

6/8-core cable

relative humidity0-99%communication

ssi/biss-c/rs-422/rs-485

shock endurance/

functional

100g/11ms

vibration functional20g(10-2000hz)

protectionip 40

Drawing

OD 80mm series C-Series Inductive Rotary Encoders drawing

Ordering Code

C
25
60
A
19
01
05
S
Communication protocol
B:biss-c interface/S:ssi interface
R:rs-422 serial interface/E:rs-485
Power supply voltage
05: 5V (default)
12: 12V
24: 24V
Operating temperature
01:-30°C~+85°C(efault)
02:-40°C~+125°C
Encoder output resolution
15:15-bit(32768)
17:17-bit(131072)
18:18-bit(262144)
19:19-bit(524288)
20:20-bit(1048576)
21:21-bit(2097152)
22:22-bit(4194304)
Output type
A: Single-turn absolute
Product outer diameter
60: Outer diameter 60mm
Product inner diameter
25: Inner diameter 25mm
Product Series
C: single absolute encoder
D: Upper/lower dual absolute encoder
DP: Inner/outer dual absolute encoder

Illustrated by example


C–25–60–A–19–01–05–S indicates a C-series single-turn absolute encoder with a 25 mm bore diameter and 60 mm outer diameter. “19” denotes 19-bit single-turn absolute resolution. The operating temperature range is −40 °C to ~+125 °C, the power supply is 5~30 V, and the output communication protocol is SSI.

D–21–58–A–19–02–05–E indicates a D-series absolute dual encoder with a 21 mm bore diameter and 58 mm outer diameter. “19” denotes 19-bit single-turn absolute resolution. The operating temperature range is −40 °C ~ +125 °C, the power supply is 5 V, and the output communication protocol is RS-485.

DP–20–50–A–19–02–05–E indicates a DP-series absolute dual encoder with a 20 mm bore diameter and 50 mm outer diameter. “19” denotes 19-bit single-turn absolute resolution. The operating temperature range is −40 °C ~ +125 °C, the power supply is 5 V, and the output communication protocol is RS-485.


Case studies (Customized frameless motors developed with our clients)


Case Study 4: Custom Potting Frameless Motor for Rotary Tabl
Case Study 3: Custom Frameless Torque Motor for Precision Ph
Case Study 2: Custom Frameless Motor Powers Next-Gen 5-Axis
Case study 1: The Custom Solution Based on U9419 Frameless m

Additional Info


Its hollow shaft and compact, low-profile design allow easy integration with through-shafts, slip rings, direct drive motors, and systems with cables, pipes, or optical fibers. Installation is simple and does not require high-precision mounting parts or couplings.


MOSRAC absolute rotary encoders are widely used in robotics, medical equipment, industrial automation, aerospace, and other industries, offering reliable solutions for applications such as environmental monitoring, safety systems, life sciences, semiconductors, chemicals, and energy.


Features & Benefits:

✔️Non-contact

✔️Hollow shaft

✔️Compact Design

✔️High Precision

✔️Absolute Value

✔️Low Power Consumption

✔️Maintenance-free

✔️Coupling-free

✔️Easy Installation

✔️Anti-magnetic Interference

✔️Vibration and Shock ResistantV

✔️Customizable




Download

  • C3580 Inductive Rotary Absolute Encoders Datasheet.pdf

    OD: 80mm|Height: 8mm

  • 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.


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