RJSII Series

Bestseller

• Second-gen joint modules, available in various specifications, for quick assembly of your robot

• Classic style, powerful performance, high reliability

• Brand-new structural design, excellent heat dissipation performance

• Operating temperature range of -20°C to 50°C, suitable for harsh weather conditions

• Powerful output, maximum torque options ranging from 50 to 1500N·m

• IP54 protection level (IP65 optional), suitable for demanding working environments

• Provide customized services for products and solutions

Collaborative Robots, Medical Robots, Precision Turntables, Automation Equipment, etc

Diameter: 66mm
Weight: 1.04kg
Average load torque: 10.5N·m
Rated speed: 30rpm

Diameter: 76mm
Weight: 1.6kg
Average load torque: 13.5N·m
Rated speed: 30rpm

Diameter: 90mm
Weight: 2.6kg
Average load torque: 49N·m
Rated speed: 19.8rpm

Diameter: 116mm
Weight: 4.5kg
Average load torque: 133N·m
Rated speed: 24.8rpm

Diameter: 152mm
Weight: 8.6kg
Average load torque: 267N·m
Rated speed: 12.4rpm

Diameter: 184mm
Weight: 15kg
Average load torque: 557N·m
Rated speed: 16.5rpm

Significant performance boost, higher accuracy, increased torque, and smoother, safer operation

Specifications

Drawings

Category	Unit	RJSII-14S	RJSII-14	RJSII-17	RJSII-20	RJSII-25	RJSII-32	RJSII-40
Parameters of Harmonic Drive Reducer
Reduction Ratio	--	100	101	101	101	101/121	121	121
Gearbox Backlash	arcsec	＜10	＜10	＜10	＜10	＜10	＜10	＜10
Transmission Accuracy	arcmin	＜1	＜1	＜1	＜1	＜1	＜1	＜1
Average Lifespan	Hour	20000	20000	20000	20000	20000	20000	20000

Output Capability
Permissible Starting and Stopping Torque	N·m	26	34	66	102	194/207	459	800
Average Load Torque	N·m	10.5	13.5	49	61	133	267	557
Maximum Instantaneous Torque	N·m	51	66	134	182	351/376	848	1458
Maximum Allowable Bending Torque	N·m	20	41	72	140	243	460	600
Rated Speed	rpm	30	30	19.8	26.7	29.7/24.8	12.4	16.5
Maximum Speed	rpm	55	45	28.7	39.6	37.6/31.4	15.5	20
Repeatability	arcsec	<60	<60	<60	<60	<60	<60	<60
Absolute Positioning Accuracy	arcsec	<200	<200	<200	<200	<200	<200	<200

Servo System
Motor Power	W	65	129	148	282	400	800	1450
Rated Voltage	VDC	48	48	48	48	48	48	48
Rated Current	A(rms)	3.6	4.8	5.7	9.5	11.5	19.6	33.7
Peak Current	A(rms)	10.8	14.4	17.1	27.25	28.75	40	67.4
Incremental Encoder	P/R	20000	20000	20000	20000	20000	20000	20000
Absolute Encoder	Bit	17	17	17	17	17	17	17
Communication Protocol	--	CANopen/EtherCAT

Dimensions
Joint Diameter	mm	66	76	90	96	116	152	184
Joint Length	mm	114	122	139	131	149	181	209
Through Hole Diameter	mm	6.5	7.5	12	12	12	14	15
Joint Weight	kg	1.04	1.6	2.6	3.1	4.5	8.6	15

Other Specification
Brake		24/12VDC Electromagnetic Friction Type
IP Degree		IP54(IP65 optional)
Operating Environment		Operating Temperature: 0 to 50°C (Optional: -40 to 60°C), Storage Temperature: -40 to 80°C, Ambient Humidity: 90% Relative Humidity (Non-condensing)

Note: We offer OEM/ODM customization services. If you have any additional technical requirements, please contact us for further consultation.

RJSII	-14	-100	-20	-B2	-SA17	-D6	E	-B1
Series	Model	Gear Ratio	Stator Length	Brake	Absolute Value Encoder	Drive Model	Default Communication Config.	Version Number

Straight Cylindrical Joint	14S	100-1：101	10	B2：Electromagnetic Friction - Traditional Brake	S:Single Turn M:Multi-Turn A:Absolute Value 17:Encoder Single-Turn Resolution	D3：RDM2 D6:RGT	E: EtherCAT C：CANopen	B1：Design Version Number
	14		20
	17	120-1：121	25.2
	20		15.3
	25		27
	32	160-1：161	31
	40		25

ExampleJoint Model：

Assisting in streamlining robot design, accessory selection, and performance testing to save time and manpower costs

RJSII joint module