• Couplings
  • Rigid Type

MRGS-C

Rigid Couplings - Clamping Type

  • Standard

Dimension Drawing

MRGS-CRigid Couplings - Clamping Type寸法図

Specs/CAD

Unit : mm

Part Number A L W F G M Screw Tightening
Torque (N・m)
Standard Bore Diameter
D1-D2
CAD RFQ
MRGS-16C 16 7.5 16 3.75 5 M2.5 1 CAD RFQ
MRGS-20C 20 9.5 20 4.75 6.5 M2.5 1 CAD RFQ
MRGS-25C 25 12 25 6 9 M3 1.5 CAD RFQ
MRGS-32C 32 15.5 32 7.75 11 M4 2.5 CAD RFQ
MRGS-40C 40 19.5 40 9.5 14 M5 4 CAD RFQ
MRGS-50C 50 24.25 50 12 18 M6 8 CAD RFQ
MRGS-65C 65 31.5 65 16 23 M8 16 CAD RFQ

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-16C 6 0.3 39000 8.0×10-7 22
MRGS-20C 8 0.5 31000 2.4×10-6 41
MRGS-25C 10 1 25000 7.3×10-6 80
MRGS-32C 14 2 19000 2.5×10-5 160
MRGS-40C 18 3 15000 7.0×10-5 297
MRGS-50C 24 4.5 12000 2.1×10-4 563
MRGS-65C 30 7 9000 8.1×10-4 1270

*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 D1・D2
5 6 8 10 12 14 15 16 18 19 20 25 28 30
MRGS-16C - - - - - - - - - - - -
MRGS-20C - - - - - - - - - - - -
MRGS-25C - - - - - - - - - - - -
MRGS-32C - - - - - - - - - - -
MRGS-40C - - - - - - - - - - -
MRGS-50C - - - - - - - - - - - -
MRGS-65C - - - - - - - - - - -

● 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-C
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

Precautions for Use

In case of mounting on D-cut shaft, be careful about the position of the D-cut surface of the shaft. ⇒Mounting and Maintenance
There are sizes where the hex socket head bolt exceeds the outer diameter of the coupling and the rotating diameter is larger than the outer diameter. Please be careful of the interference of coupling.

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 Service

Product List

Customer Service

  • Usage Method
  • Technical Question
  • Customization Products
USA and Canada

NBK America LLC

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

Asia and Europe

Nabeya Bi-tech Kaisha

8:00 to 17:00 on weekdays, Japan Standard Time