Curved Jaw Type Flexible Coupling

MJT Setscrew Type

Merits

High Torque
Vibration Absorption

Compression type coupling assembled by pressing a polyurethane sleeve into hubs on both sides
Zero backlash in low torque application
Excellent flexibility-Torsional vibration can be absorbed as well as parallel and angular misalignments
Three different hardness sleeves are available
Excellent electrical insulation
Identical clockwise and counter-clockwise rotational characteristics
Operational temperature: -20℃~60℃
Finished products featuring two different end bore diameters available in stock

Application

Servomotor	B
Stepping Motor	A
General-purpose Motor	A
Encoder	-

Features

Zero Backlash	B
High Torsional Stiffness	-
High Torque	A
Absorption of Misalignment	B
Vibration Absorption	B
Electrical Insulation	A
Corrosion Resistant (All Stainless Steel)	-

A : Excellent B : Very Good

Eccentric Reaction Force / Changes in Static Torsional Stiffness Caused by Temperature / Natural Frequency / Slip Torque [PDF 426KB]

Configuration & Material

*Stock screws can be replaced with stainless steel screws. Please take advantage of our stainless steel screw option.
For more information please refer to Stainless Steel Screws [PDF 256KB].

Dimensions

unit:mm
Catalog Number	A	L	W	B	C	F	M	Wrench Torque (N·m)
MJT-14-BL	14	7	22	6	1	3.5	M3	0.7	MJT14.dxf	MJT14
MJT-20-BL	20	10	30	8	1	5	M3	0.7	MJT20.dxf	MJT20
MJT-30-BL	30	11	35	10	1.5	5.5	M4	1.7	MJT30.dxf	MJT30
MJT-40-BL	40	25	66	12	2	12.5	M5	4	MJT40.dxf	MJT40
MJT-55-BL	55	30	78	14	2	15	M6	7	MJT55.dxf	MJT55
MJT-65-BL	65	35	90	15	2.5	17.5	M8	15	MJT65.dxf	MJT65
MJT-80-BL	80	45	114	18	3	22.5	M8	15	MJT80.dxf	MJT80
MJT-95-BL	95	50	126	20	3	25	M8	15	MJT95.dxf	MJT95
MJT-14-WH	14	7	22	6	1	3.5	M3	0.7	MJT14.dxf	MJT14
MJT-20-WH	20	10	30	8	1	5	M3	0.7	MJT20.dxf	MJT20
MJT-30-WH	30	11	35	10	1.5	5.5	M4	1.7	MJT30.dxf	MJT30
MJT-40-WH	40	25	66	12	2	12.5	M5	4	MJT40.dxf	MJT40
MJT-55-WH	55	30	78	14	2	15	M6	7	MJT55.dxf	MJT55
MJT-65-WH	65	35	90	15	2.5	17.5	M8	15	MJT65.dxf	MJT65
MJT-80-WH	80	45	114	18	3	22.5	M8	15	MJT80.dxf	MJT80
MJT-95-WH	95	50	126	20	3	25	M8	15	MJT95.dxf	MJT95
MJT-14-RD	14	7	22	6	1	3.5	M3	0.7	MJT14.dxf	MJT14
MJT-20-RD	20	10	30	8	1	5	M3	0.7	MJT20.dxf	MJT20
MJT-30-RD	30	11	35	10	1.5	5.5	M4	1.7	MJT30.dxf	MJT30
MJT-40-RD	40	25	66	12	2	12.5	M5	4	MJT40.dxf	MJT40
MJT-55-RD	55	30	78	14	2	15	M6	7	MJT55.dxf	MJT55
MJT-65-RD	65	35	90	15	2.5	17.5	M8	15	MJT65.dxf	MJT65
MJT-80-RD	80	45	114	18	3	22.5	M8	15	MJT80.dxf	MJT80
MJT-95-RD	95	50	126	20	3	25	M8	15	MJT95.dxf	MJT95

Specifications

Catalog Number	Max. Bore (mm)	Rated Torque^* (N·m)	Max. Torque^* (N·m)	Max. Rotational Frequency (min^-1)	Moment of Inertia^** (kg·m²)	Static Torsional Stiffness (N·m/rad)	Errors of Eccentricity (mm)	Errors of Angularity (°)	Errors of Shaft End-Play (mm)	Mass^** (g)
MJT-14-BL	6.35	0.7	1.4	45000	2.1x10^-7	8	0.15	1	0~+0.6	7.3
MJT-20-BL	9.525	1.8	3.6	31000	1.0x10^-6	16	0.2	1	0~+0.8	18
MJT-30-BL	14	4	8	21000	5.9x10^-6	46	0.2	1	0~+1.0	46
MJT-40-BL	20	4.9	9.8	15000	4.0x10^-5	380	0.15	1	0~+1.2	150
MJT-55-BL	25	17	34	11000	1.7x10^-4	1400	0.2	1	0~+1.4	350
MJT-65-BL	30	46	92	9000	3.9x10^-4	2800	0.2	1	0~+1.5	570
MJT-80-BL	45	95	190	7000	1.1x10^-3	3200	0.2	1	0~+1.8	1200
MJT-95-BL	50	130	260	6000	2.4x10^-3	3600	0.2	1	0~+2.0	1900
MJT-14-WH	6.35	1.2	2.4	45000	2.1x10^-7	14	0.1	1	0~+0.6	7.3
MJT-20-WH	9.525	3	6	31000	1.0x10^-6	29	0.15	1	0~+0.8	18
MJT-30-WH	14	7.5	15	21000	5.9x10^-6	73	0.15	1	0~+1.0	46
MJT-40-WH	20	10	20	15000	4.0x10^-5	570	0.1	1	0~+1.2	150
MJT-55-WH	25	35	70	11000	1.7x10^-4	1600	0.15	1	0~+1.4	350
MJT-65-WH	30	95	190	9000	3.9x10^-4	3000	0.15	1	0~+1.5	570
MJT-80-WH	45	190	380	7000	1.1x10^-3	5300	0.15	1	0~+1.8	1200
MJT-95-WH	50	265	530	6000	2.4x10^-3	6200	0.15	1	0~+2.0	1900
MJT-14-RD	6.35	2	4	45000	2.1x10^-7	22	0.1	1	0~+0.6	7.3
MJT-20-RD	9.525	5	10	31000	1.0x10^-6	55	0.1	1	0~+0.8	18
MJT-30-RD	14	12.5	25	21000	5.9x10^-6	130	0.1	1	0~+1.0	46
MJT-40-RD	20	17	34	15000	4.0x10^-5	1200	0.1	1	0~+1.2	150
MJT-55-RD	25	60	120	11000	1.7x10^-4	2600	0.1	1	0~+1.4	350
MJT-65-RD	30	160	320	9000	3.9x10^-4	4900	0.1	1	0~+1.5	570
MJT-80-RD	45	325	650	7000	1.1x10^-3	6500	0.1	1	0~+1.8	1200
MJT-95-RD	50	450	900	6000	2.4x10^-3	8900	0.1	1	0~+2.0	1900

*Adjustment of rated and maximum torque specifications for load fluctuations is not required.
However, if operating temperature exceeds 30℃, please adjust rated torque and maximum torque as detailed in the table below.
The operational temperature range for MJT is -20℃~60℃. For more detailed information, please refer to Selection Guidelines [PDF 171KB].
**Based on the maximum shaft bores.

Stock Bores

Air Temperature	-20℃~30℃	30℃~40℃	40℃~60℃
Temperature Correction Factor	1.00	0.80	0.70

Catalog Number	RoHS	Stock Bores D₁·D₂
MJT-14-BL	Compliant
MJT-20-BL	Compliant
MJT-30-BL	Compliant
MJT-40-BL	Compliant
MJT-55-BL	Compliant
MJT-65-BL	Compliant
MJT-80-BL	Compliant
MJT-95-BL	Compliant
MJT-14-WH	Compliant
MJT-20-WH	Compliant
MJT-30-WH	Compliant
MJT-40-WH	Compliant
MJT-55-WH	Compliant
MJT-65-WH	Compliant
MJT-80-WH	Compliant
MJT-95-WH	Compliant
MJT-14-RD	Compliant
MJT-20-RD	Compliant
MJT-30-RD	Compliant
MJT-40-RD	Compliant
MJT-55-RD	Compliant
MJT-65-RD	Compliant
MJT-80-RD	Compliant
MJT-95-RD	Compliant

●All products come with setscrews.
●Hubs with shaft bore diameters of φ4 or less have one setscrew.
●Recommended tolerance on shaft diameters is h6 and h7.