• Couplings
  • Disk Type

MDW

Flexible Couplings - Disk Type

  • Zero Backlash
  • High torsional rigidity

Dimension Drawing

MDWFlexible Couplings - Disk Type寸法図

Specs/CAD

Unit : mm

Part Number A L W E F G M Screw Tightening
Torque (N・m)
Standard Bore Diameter
D1-D2
CAD RFQ
MDW-19C 19 8 27 8.5 2.5 6.5 M2 0.5 - CAD RFQ
MDW-25C 25 10 31 12.5 3.5 9 M2.5 1 - CAD RFQ
MDW-32C 32 12 40 16 4 11 M3 1.5 - CAD RFQ
MDW-40C 40 14 44 21 5 15 M4 2.5 - CAD RFQ
MDW-50C 50 18 57 26 6 18 M5 7 - CAD RFQ
MDW-63C 63 20 61 35 7 24 M6 12 - CAD RFQ

Part Number Max. Bore Diameter
(mm)
Rated
Torque*1
(N・m)
Max. Rotational Frequency
(min-1)
Moment of
Inertia
(kg・m2)*2
Static
Torsional
Stiffness
(N・m/rad)
Max. Lateral Misalignment
(mm)
Max. Angular
Misalignment
(°)
Max. Axial
Misalignment
(mm)
Mass
(g) *2
MDW-19C 8 0.7 33000 8.7×10-7 200 0.12 1.5 ±0.5 18
MDW-25C 12 1 25000 2.7×10-6 450 0.12 1.5 ±0.5 25
MDW-32C 15 2.5 19000 9.6×10-6 1100 0.15 1.5 ±0.5 60
MDW-40C 20 3.5 15000 1.9×10-5 1400 0.15 1.5 ±0.5 100
MDW-50C 25 9 12000 8.1×10-5 2200 0.15 1.5 ±0.5 210
MDW-63C 30 12.5 10000 2.1×10-4 3000 0.15 1.5 ±0.5 340

*1: Correction of rated torque due to load fluctuation is not required. For more detailed information, please refer to Selection Guidelines.
*2: These are values with max. bore diameter.

Part Number Standard Bore Diameter D1・D2
4 5 6 6.35 7 8 9 10 11 12 14 15 16 17 18 19 20 22 24 25 28 30
MDW-19C - - - - - - - - - - - - - - - - -
MDW-25C - - - - - - - - - - - - - - -
MDW-32C - - - - - - - - - - - - - - - -
MDW-40C - - - - - - - - - - -
MDW-50C - - - - - - - - - - - -
MDW-63C - - - - - - - - - - -

● All products are provided with hex socket head cap screw.
● Recommended tolerance for shaft diameters is h6 and h7.
● In case of mounting on D-cut shaft, be careful about the position of the D-cut surface of the shaft. ⇒Mounting and Maintenance
● Bore and keyway modifications are available on request. Please take advantage of our modification services.

Structure

Clamping Type

MDWFlexible Couplings - Disk Type


Material/Finish

MDW-C
Hub A2017
Anodized
Spacer A2017
Anodized
Disk SUS304
Pin SUS303
Collar SUS303
Hex Socket Head Cap Screw SCM435
Ferrosoferric Oxide Film (Black)

Characteristics

  • Recommended Applicable Motor
MDW-C
Servomotor
Stepping Motor
General-purpose Motor

◎: Excellent ○: Very good ●: Available

  • Property
MDW-C
Zero Backlash
Allowable Misalignment

◎: Excellent ○: Very good

  • This is a disk type flexible coupling.
  • The stainless steel disk allows eccentricity, and angular misalignment, and end-play.

Application

Actuator / XY stage

Related Products

The Double-Disk type Flexible Coupling XHW-C is compatible with the servomotor with 350% instantaneous max. torque is available.
XHW-C

MDWFlexible Couplings - Disk Type


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

9:00 to 17:15 on weekdays, Japan Standard Time