MRG Setscrew Type

Merits

Standard

Light weight, minimum moment of inertia, and high response
Also available in aluminum alloy and stainless steel
Available in three types: setscrew type, clamp type, and split type
Finished products featuring two different end bore diameters available in stock

Application

Servomotor	A
Stepping Motor	A
General-Purpose Motor	-
Encoder	A

Special Characteristics

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

A : Excellent B : Very Good

High precision rigid coupling XRP is available.

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	W	F	M	Wrench Torque (N·m)
MRG-16	16	24	6	M3	0.7	MRG16.dxf	MRG16
MRG-20	20	30	7	M3	0.7	MRG20.dxf	MRG20
MRG-25	25	36	9	M4	1.7	MRG25.dxf	MRG25
MRG-32	32	41	10	M4	1.7	MRG32.dxf	MRG32
MRGS-16	16	24	6	M3	0.7	MRGS16.dxf	MRGS16
MRGS-20	20	30	7	M3	0.7	MRGS20.dxf	MRGS20
MRGS-25	25	36	9	M4	1.7	MRGS25.dxf	MRGS25
MRGS-32	32	41	10	M4	1.7	MRGS32.dxf	MRGS32

Specifications

Catalog Number	Max. Bore (mm)	Rated Torque (N·m)	Max. Torque (N·m)	Max. Rotational Frequency (min^-1)	Moment of Inertia^* (kg·m²)	Mass^* (g)
MRG-16	8	0.3	0.6	39000	4.4x10^-7	11
MRG-20	10	0.5	1	31000	1.3x10^-6	20
MRG-25	12	1	2	25000	3.9x10^-6	39
MRG-32	16	2	4	19000	1.2x10^-5	71
MRGS-16	8	0.3	0.6	39000	1.2x10^-6	28
MRGS-20	10	0.5	1	31000	3.5x10^-6	54
MRGS-25	12	1	2	25000	1.0x10^-5	100
MRGS-32	16	2	4	19000	3.1x10^-5	190

*Adjustment of rated and maximum torque specifications for load fluctuations is not required.
For more detailed information, please refer to Selection Guidelines [PDF 171KB].
**Moment of inertia and mass figures based on maximum bore dimensions.

Stock Bores

Catalog Number	RoHS	Stock Bores D₁·D₂
MRG-16	Compliant
MRG-20	Compliant
MRG-25	Compliant
MRG-32	Compliant
MRGS-16	Compliant
MRGS-20	Compliant
MRGS-25	Compliant
MRGS-32	Compliant

●All products come with setscrews.
●Hubs with shaft bore diameters of φ4 or less have one setscrew.
●Recommended tolerance for shaft diameters is h6 and h7.
●Bore and keyway modifications are available on request. Please take advantage of our bore modification services.
For more information please refer to Custom Bore Modifications [PDF 495KB].