• Couplings
  • Serration Type

MSF

Flexible Couplings - Serration - Type

  • High Allowable Misalignment
  • Vibration absorption characteristics
  • Low Cost

Dimension Drawing

MSFFlexible Couplings - Serration - 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

Unit : mm

Part Number A B L W F M Sleeve Screw Tightening
Torque (N・m)
Standard Bore Diameter (Dimensional Allowance H8)
D1-D2
CAD RFQ
T C E
MSF-16 16 12 8 27 4 M3 11 14 6/6 0.7 - CAD RFQ
MSF-20 20 15 10 34 5 M3 14 18 8/8 0.7 - CAD RFQ
MSF-25 25 18 12 41 6 M4 17 22 10/10 1.7 - CAD RFQ
MSF-32 32 21 14 48 7 M4 20 29 12/14 1.7 - CAD RFQ

Part Number Max. Bore Diameter
(mm)
Rated
Torque*1
(N・m)
Max. Torque
(N·m) *1
Max. Rotational Frequency
(min-1)
Moment of
Inertia
(kg・m2)*2
Static
Torsional
Stiffness
(N・m/rad)
Max. Lateral Misalignment
(mm)
Max. Angular
Misalignment
(°)
Mass
(g) *2
MSF-16 8 0.5 1 39000 9.0×10-7 4.4 0.2 2 22
MSF-20 10 1 2 31000 2.7×10-6 9.5 0.2 2 42
MSF-25 12 1.5 3 25000 8.1×10-6 20 0.2 2 81
MSF-32 15 3 6 19000 2.5×10-5 52 0.2 2 150

*1: Correction of rated torque and max. torque due to load fluctuation is not required. However, if ambient temperature exceeds 30°C, be sure to correct the rated torque and max. torque with temperature correction factor shown in the following table. The allowable operating temperature of MSF is -20℃ to 60℃. For more detailed information, please refer to Achieving Better Drive.
*2: These are values with max. bore diameter.

Part Number Standard Bore Diameter (Dimensional Allowance H8)
D1・D2
3 4 5 6 6.35 8 10 12 14
MSF-16 - - -
MSF-20 - - - -
MSF-25 - - - -
MSF-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

MSF-16-MSF-25 MSF-32
Casing ZDC2
Cathodic Electrodeposition Coating
SMF4040
Steam Treatment
Sleeve Polyurethane Polyurethane
Hex Socket Set Screw SCM435
Ferrosoferric Oxide Film (Black)
SCM435
Ferrosoferric Oxide Film (Black)

Structure

Set Screw Type

MSFFlexible Couplings - Serration - Type


Characteristics

  • Recommended Applicable Motor
MSF
Servomotor
Stepping Motor
General-purpose Motor

◎: Excellent ○: Very good ●: Available

  • Property
MSF
Allowable Misalignment
Vibration Absorption
Electrical Insulation
Allowable Operating Temperature -20℃ to 60℃

◎: Excellent ○: Very good

  • The engagement of serration transmits torque. This is a simple structure flexible coupling.
  • Excellent flexibility. Its max. lateral misalignment and max. angular misalignment are large, absorbing torsional vibration.

Application

Mixer / Gaming device

Selection

Selection Based on Shaft Diameter and Rated Torque

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

MSFFlexible Couplings - Serration - Type

Selection Example

In case of selected parameters of shaft diameter of φ 8 and load torque of 1.4 N•m, the selection size is MSF-25.

Ambient Temperature / Temperature Correction Factor

Ambient Temperature Temperature Correction Factor
-20℃ to 30℃ 1.00
30℃ to 40℃ 0.80
40℃ to 60℃ 0.70

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