• Couplings
  • Rigid Type

MRG-C

Rigid Couplings - Clamping Type

  • Standard

Dimension Drawing

MRG-CRigid Couplings - Clamping Type寸法図

Specs/CAD

Part Number ALWFGM Screw Tightening
Torque (N・m)
Standard Bore Diameter
D1-D2
Price
(USD)
CAD Add to Cart Additional Modification
MRG-16C 16 7.5 16 3.75 5 M2.5 1 25.53 CAD Cart       
MRG-20C 20 9.5 20 4.75 6.5 M2.5 1 27.86 CAD Cart       
MRG-25C 25 12 25 6 9 M3 1.5 31.85 CAD Cart       
MRG-32C 32 15.5 32 7.75 11 M4 2.5 39.80 CAD Cart       
MRG-40C 40 19.5 40 9.5 14 M5 4 57.00 CAD Cart       
MRG-50C 50 24.25 50 12 18 M6 8 92.63 CAD Cart       
MRG-65C 65 31.5 65 16 23 M8 16 169.71 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-16C 6 1 39000 3.0×10-7 8.3
MRG-20C 8 2.5 31000 8.7×10-7 15
MRG-25C 10 4.5 25000 2.7×10-6 29
MRG-32C 14 10 19000 7.1×10-6 51
MRG-40C 18 20 15000 2.4×10-5 104
MRG-50C 24 25 12000 7.5×10-5 197
MRG-65C 30 35 9000 2.8×10-4 446

*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
MRG-16C - - - - - - - - - - - -
MRG-20C - - - - - - - - - - - -
MRG-25C - - - - - - - - - - - -
MRG-32C - - - - - - - - - - -
MRG-40C - - - - - - - - - - -
MRG-50C - - - - - - - - - - - -
MRG-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

MRG-C
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

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 Services

Product List

Customer Service

  • Usage Method
  • Technical Question
  • Customization Products

NBK America LLC

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