• Couplings
  • Rigid Type

MRG

Rigid Couplings - Set Screw Type

  • Standard

Dimension Drawing

MRGRigid Couplings - Set Screw Type寸法図

*1: In a case where the bore diameter is φ 4 or less, the set screw is used in only one place.

Specs/CAD

Part Number AWFM Screw Tightening
Torque (N・m)
Standard Bore Diameter (Dimensional Allowance H8)
D1-D2
Price
(USD)
CAD Add to Cart Additional Modification
MRG-16 16 24 6 M3 0.7 14.10 CAD Cart       
MRG-20 20 30 7 M3 0.7 15.59 CAD Cart       
MRG-25 25 36 9 M4 1.7 18.95 CAD Cart       
MRG-32 32 41 10 M4 1.7 25.98 CAD Cart       
MRG-40 40 44 10.5 M5 4 56.03 CAD Cart       
MRG-50 50 53 12 M6 7 93.87 CAD Cart       
MRG-65 65 65 16 M8 15 171.71 CAD Cart       

Part Number Max. Bore Diameter
(mm)
Rated
Torque*1
(N・m)
Max. Rotational Frequency
(min-1)
Moment of
Inertia
(kg・m2)*2
Mass
(g) *2
MRG-16 8 1 39000 4.4×10-7 11
MRG-20 10 2.5 31000 1.3×10-6 20
MRG-25 12 4.5 25000 3.9×10-6 39
MRG-32 16 10 19000 1.2×10-5 71
MRG-40 20 20 15000 2.8×10-5 114
MRG-50 25 25 12000 8.4×10-5 215
MRG-65 32 35 9000 2.9×10-4 450

*1: Correction of rated torque due to load fluctuation is not required.
*2: These are values with max. bore diameter.

Part Number Standard Bore Diameter (Dimensional Allowance H8)
D1・D2
3 4 5 6 8 10 12 15 16 18 19 20 25 28 30 32
MRG-16 - - - - - - - - - - - -
MRG-20 - - - - - - - - - - - - -
MRG-25 - - - - - - - - - - - - -
MRG-32 - - - - - - - - - - - - -
MRG-40 - - - - - - - - - - - -
MRG-50 - - - - - - - - - - - - -
MRG-65 - - - - - - - - - - - - -

● All products are provided with hex socket set screws.
● Recommended tolerance for shaft diameters is h6 and h7.
● Bore and keyway modifications are available on request. Please take advantage of our modification services.

Material/Finish

MRG
Main Body A2017
Anodized
Hex Socket Set Screw SCM435
Ferrosoferric Oxide Film (Black)
Hex Socket Head Cap Screw SCM435
Ferrosoferric Oxide Film (Black)

Structure

Set Screw Type

MRG Aluminum alloyMRGMRGS

MRG/MRGS/MRG-C/MRGS-C/MRG-W/MRGS-W_CRigid Couplings

MRGSMade of all stainless steelMRGMRGS

MRG/MRGS/MRG-C/MRGS-C/MRG-W/MRGS-W_CRigid Couplings

Clamping Type

MRG-C Aluminum alloyMRG-CMRGS-C

MRG/MRGS/MRG-C/MRGS-C/MRG-W/MRGS-W_CRigid Couplings

MRGS-CMade of all stainless steelMRG-CMRGS-C

MRG/MRGS/MRG-C/MRGS-C/MRG-W/MRGS-W_CRigid Couplings

Split Type

MRG-W Aluminum alloyMRG-WMRGS-W

MRG/MRGS/MRG-C/MRGS-C/MRG-W/MRGS-W_CRigid Couplings

MRGS-WMade of all stainless steelMRG-WMRGS-W

MRG/MRGS/MRG-C/MRGS-C/MRG-W/MRGS-W_CRigid Couplings


Characteristics

  • Recommended Applicable Motor
MRG MRGS
Servomotor
Stepping Motor
General-purpose Motor

◎: Excellent ○: Very good ●: Available

  • Property
MRG MRGS
Zero Backlash
High Torque
High Torsional Stiffness
Corrosion Resistance (All S.S.) -

◎: Excellent ○: Very good

  • This is a rigid type coupling.
  • Light weight and ultra small moment of inertia. High response. High response.
  • There are two types of units made of aluminum alloy or all stainless steel.
  • There are three attachment methods: set screw type, clamping type, and split type.

Application

High precision XY stage / Machine tool / Cleaning equipment

Selection

Selection Based on Shaft Diameter and Rated Torque

The area bounded by the shaft diameter and rated torque indicates the selection size.

MRG/MRGS/MRG-C/MRGS-C/MRG-W/MRGS-W_CRigid Couplings

MRG/MRGS/MRG-C/MRGS-C/MRG-W/MRGS-W_CRigid Couplings

Selection Example

In case of selected parameters of shaft diameter of φ15 and load torque of 3 N・m, the selected size for MRG is MRG-32.

Related Products

Rigid coupling with high precision XRP-C is available.

MRG/MRGS/MRG-C/MRGS-C/MRG-W/MRGS-W_CRigid Couplings


Related Services

Product List

Customer Service

  • Usage Method
  • Technical Question
  • Customization Products

NBK America LLC

9:00 to 17:00 on weekdays, Eastern Standard Time