RJS14
Diameter：90mm
Weight：1.75kg
Average torque：11N·m
Rated speed：30RPM
RJS17
Diameter：90mm
Weight：2.37kg
Average torque：39N·m
Rated speed：30RPM
RJS20
Diameter：100mm
Weight：2.92kg
Average torque：49N·m
Rated speed：30RPM
RJS25
Diameter：119mm
Weight：4.96kg
Average torque：108N·m
Rated speed：20RPM
RJS32
Diameter：156mm
Weight：8.6kg
Average torque：216N·m
Rated speed：12.5RPM
RJS40
Diameter：184mm
Weight：15kg
Average torque：450N·m
Rated speed：12.5RPM

RJS Joint Module
For Educational Research Applications

Integrate high-performance driver, DC frameless torque motor, high-resolution dual encoder, harmonic reducer, brake and sensor in one, to play the joint module performance efficiently

Innovation, openness, convenience and efficiency

• Light cabinet, the minimum diameter of 90 mm, weight is only 1.75 kg
• Support for EtherCAT and CANopen communication protocols
• Modular design, quick installation
• Latch type lock, good heat dissipation, power automatic lock
• Ultra-low power consumption, normal operation only 20W

Integrated highly intelligent integration

Highly integrated integration of technologies such as drives, motors, harmonic reducers, dual encoders, and brakes,which can better provide a complete solution for your robot development

Harmonic reducers

Coaxial with the motor, stable and reliable
• Force sensor optional
Drives

Intelligent drive, efficient and accurate
• Support EtherCAT / CANopen optional
• High performance full digital servo driver, maximum power 1KW
• Ultra-thin integration, smooth operation and fast response
• Dual encoder feedback for precise control and robot dynamics development
Motors

Hollow ultra-thin strong output
• Large hollow frameless motor, torque 0.2-5N.m, speed 2000-4000RPM
• The total weight of the fixed rotor is only 0.27kg, which minimizes joint weight
• Minimal torque ripple, low moment of inertia, and fast dynamic response
• High accuracy, precise positioning, and strong output
Dual encoders

Keep improving
• High-precision dual encoder for precise control of motion trajectory
• Hollow large aperture, ultra-thin design, more compact structure
• End absolute encoder resolution 17bits, repeat positioning accuracy ± 0.015 °
• Support BISS protocol
• Suitable for high precision fields such as robotics, medical equipment, electricity, education and scientific research

Excellent performance, safe and reliable

Helps you improve your robot's market competitiveness

Safe and smooth
• Strong output at low speed
• High speed and smooth
• Robot runs without jitter
Higher accuracy
• Output positioning accuracy up to 0.003°
• Robot end repeatability 0.02mm
• Suitable for high-precision applications
Long life
• 7*24h aging test
• Service life up to 30,000h
High reliability
• Comprehensive protection design
• Integration

Product advantages

Focusing on the research and development of the robotic joints, the RJS joint modules has the characteristics of high positioning accuracy and reliable performance.

Modular design: The RJS joint modules integrate motor, driver, harmonic reducer, encoder, and brake. The structure is small and compact. The minimum robot weight consisting of a 6-axis RJS joint module is only 15kg.

Easy installation: The RJS joint module simplifies the assembly process of the robot. The assembly process no longer involves complicated parts of assembly and wiring. A 6-axis robot can be completed quickly in only 2-3h.

Convenient: The RJS joint module can help you save a lot of time and manpower required in the process of robot design, component selection, performance testing, etc., and provide you with a one-stop solution for robots.

Safe and smooth: The RJS joint modules feeds back various position, speed, current, torque, and other various information to the control system in real-time, which is convenient for you to control the robot more safely and make your robot run more smoothly.

Cost-effective: We always provide you with high-quality products and services, which gives us an excellent reputation in the industry, and you can get top-quality products at affordable prices.

Precise positioning: The RJS joint modules have good positioning accuracy. The repeated positioning accuracy of the 6-axis robotic end using the RJS joint modules reaches 0.02mm, which is suitable for more high-precision industries.

Strong output: The RJS joint modules runs powerfully at low speed is quiet and stable at high speed, and can output smoothly under extreme load conditions. The maximum continuous output torque reaches 450Nm.

Basic parameters

Parameters

Drawings

Download

Basic performance
Parameter	Units	RJS14	RJS17	RJS20	RJS25	RJS32	RJS40
Allowable torque	Nm	28	54	82	157	333	279
Average torque	Nm	11	39	49	108	216	450
Peak torque	Nm	54	86	147	284	647	1000
Rated speed	rpm	30	30	30	20	12.5	12.5
Maximum speed	rpm	40	35	35	25	15	15
positioning accuracy	度	0.002
Electrical performance
Rated current	A	5.7	5.8	7	12.2	13.3	28
Peak Current	A	14.25	14.5	17.5	30.5	33.25	56
Rated voltage	V	48
Load power	W	117	146	210	350	419	1000
Communication	--	Ethercat/Canopen
Mechanical properties
Diameter	mm	90	90	100	119	156	184
Height	mm	104	104	114	135	172	207
Length	mm	130	144	144	160	175	221.1
Weight	kg	1.75	2.37	2.92	4.96	8.6	15
Gear ratio	--	101	101	101	101	161	161
Incremental Encoder	P/R	20000
Absolute Encoder	Bit	17/19
Temperature/Humidity
Ambient temperature	--	0 - 50℃
Temperature	--	90% relative humidity（non-condensing）
Environmental requirements
IP classification	--	IP54