*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 MJB is -20°C to 60℃.
Excellent for high torque transmission and ideal for machine tool spindles.
Excellent flexibility. Excellent flexibility allows eccentricity, angular misalignment and twisting vibration to be accepted.
It has electrical insulation. Resistance value: Not less than 2 MΩ
There are four types of sleeve hardness. Please select desirable units according to usage conditions including torque and misalignment.
Since the sleeve's vibration absorption of Tight Fit can raise the gain of a servomotor, this unit can achieve high responsive operation exceeding the Disk coupling.
Easy fit allows you to assemble and partition the hub and sleeve smoothly. This allows you to reduce the time of assembling the unit and maintenance.
Sleeve Type
Application
Machine tool / Spindle
Selection
Selection Based on Shaft Diameter and Rated Torque
The area bounded by the shaft diameter and rated torque indicates the selection size.
Selection Example
In case of selected parameters of shaft diameter of φ 18 and load torque of 16 N•m, the selection size forMJB-**-BLMJB-**-EBLis MJB-55-BLMJB-55-EBL
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
Slip torque
As in the table below, the bushing type MJB has different slip torque according to the bore diameter. Take care during selection.
Unit : N・m
Part Number
Bore Diameter (mm)
10
11
12
14
15
16
18
19
20
22
24
25
28
30
32
35
38
40
42
45
48
50
MJB-55
32
54
75
110
130
MJB-65
160
170
180
200
210
220
240
260
270
300
320
340
370
MJB-80
280
330
380
410
480
500
500
500
500
500
500
500
MJB-95
500
500
500
500
500
500
500
500
500
500
500
These are test values based on the conditions of shaft dimensional allowance: h7, hardness: 34-40 HRC, and screw tightening torque of the values described in MJB dimension tables. They are not guaranteed values.
Slip torque changes with usage conditions. Carry out tests under conditions similar to actual conditions in advance.
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%.
Changes in the static torsion spring constant within the operating temperature are shown in the graph.
Before using the unit, be aware of the deterioration of responsiveness.
※Selection condition can be saved where Product Finder is available.
※Please remain the function of cookies for the browser and the JavaScript in effect when using this function.
Please correct the error in selection condition.
Please specify at least one select criterion.
Your request has been cancelled due to the duplicated page.