• Couplings
  • Rigid Type

MRGS

Rigid Couplings - Set Screw Type

  • Standard

Dimension Drawing

MRGSRigid 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
MRGS-16 16 24 6 M3 0.7 31.17 CAD Cart       
MRGS-20 20 30 7 M3 0.7 36.74 CAD Cart       
MRGS-25 25 36 9 M4 1.7 43.97 CAD Cart       
MRGS-32 32 41 10 M4 1.7 49.16 CAD Cart       
MRGS-40 40 44 10.5 M5 4 94.77 CAD Cart       
MRGS-50 50 53 12 M6 7 194.72 CAD Cart       
MRGS-65 65 65 16 M8 15 344.93 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
MRGS-16 8 0.3 39000 1.2×10-6 28
MRGS-20 10 0.5 31000 3.5×10-6 54
MRGS-25 12 1 25000 1.0×10-5 100
MRGS-32 16 2 19000 3.1×10-5 190
MRGS-40 20 3 15000 8.1×10-5 326
MRGS-50 25 4.5 12000 2.4×10-4 658
MRGS-65 32 7 9000 8.4×10-4 1290

*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
MRGS-16 5-5 5-6 6-6    
MRGS-20 6-6 6-8 6-10 8-8 8-10
10-10        
MRGS-25 8-8 8-10 8-12 10-10 10-12
12-12        
MRGS-32 12-12 12-15 12-16 15-15 15-16
16-16        
MRGS-40 16-16 16-18 16-19 16-20 18-18
18-19 18-20 19-19 19-20 20-20
MRGS-50 19-19 19-20 19-25 20-20 20-25
25-25        
MRGS-65 28-28 28-30 28-32 30-30 30-32
32-32        

● 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

MRGS
Main Body SUS303
Hex Socket Set Screw SUSXM7
Hex Socket Head Cap Screw SUSXM7

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