• Couplings
  • Jaw Type

MJT-55C-GR-12-30

Flexible coupling - Jaw-type - Clamping type

  • High Torque
  • Vibration absorption characteristics
  • Press Fitted Sleeve

Dimension Drawing

MJT-C Dimension Figure

MJT-C Dimension Figure

MJT-C Dimension Figure

Specs/CAD

Unit : mm

Part Number A L W B C* F G M Screw Tightening Torque
(N・m)
CAD
MJT-55C-GR-12-30 55 30 78 14 2 10.5 20
21
M6
M5
8
4
-

* Use with C Dimension

Part Number Slip Torque Maximum
dimensions
(mm)
Rated
Torque*
(N・m)
Max.
Torque*
(N・m)
Max. Rotational
Frequency(min-1)
Back lash 0 Allowable Transmission Torque***
(N・m)
Moment
of
Inertia**
(Kg・m2)
Static
Torsional
Stiffness
(N・m/rad)
Max. Lateral
Misalignment
(mm)
Max. Angular
Misalignment
(°)
Max. Axial
Misalignment
(mm)
Sleeve Hardness Mass**
(g)
MJT-55C-GR-12-30 23.4 32 75 150 11000 - 1.6×10-4 9000 0.08 1 0~+ 1.4 - 310

* Correction of rated torque and max. torque due to load fluctuation is not required.However, if ambient temperature exceeds 30℃, be sure to correct the rated torque and max. torque with temperature correction factor shown in the table.MJT-C's allowable operating temperature is -20℃ to 60℃.
** These are values with max. bore diameter.
*** For transmission of backlash 0, please use a tight fit sleeve.

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

Sleeve Details

MJT-C-GR_Sleeve Details


Slip torque

Concerning the sizes shown in the table, please note that the shaft's slip torque is smaller than the max. torque of MJT-C.

Unit : N・m

Part Number Bore Diameter (mm)
3 4 4.5 5 6 6.35 7 8 9.525 10 11 12 14 15  16 18 19 20 22 24 25 28 30 32 35 38 40 42 45 48 50 55
MJT-14C 0.8 1.4 1.6 3.4 2.6 2.8 3.4
MJT-20C 3.4 4.5 5.5 7.9 8 8.7 9.4  5  5 10
MJT-30C 9.6 9.7 9.8 15 16.9 19.3 19.9 21.4
MJT-40C 7.1 7.3 7.4 9.8 11.8 16.4 17.9 24.5 27 30.5 34
MJT-55C 20.3 21.8 23.4 26.1 27.9 30.6 36.1 41.6 44.1 52.3 63.7 69.6 79.2 125
MJT-65C 27.5 32.2 48.6 57.7 60.7 63.6 68 74.9 80.5 85 90.6 96 230 230
MJT-80C 88 89 92 93 95 97 100 102 110 320 500 500
MJT-95C 241 243 245 247 249 250 250 250 270 500 500 500

These are test values based on the condition of shaft's dimensional allowance: h7, hardness: from 34-40 HRC, and screw tightening torque of the values described in MJT-C dimensional table.


Change in static torsional stiffness due to temperature

This is a value under the condition where the static torsional stiffness at 20°C is 100%.
The change of torsional stiffness within the range of allowable operating temperature is as shown in the graph.
Before using the unit, be aware of the deterioration of responsiveness.


Eccentric Reaction Force


Related Service

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