Insert Ball Bearing Installation and Disassembly Guide
Insert Ball Bearing Installation and Disassembly Guide
PRODUCT
NMB miniature bearing friction torque calculation
by：Waxing
2020-11-20
Approximate calculation considering the bearing type, structure, size and working conditions, can press type approximate calculation of bearing friction torque: type: including -
—
Bearing, friction coefficient can be made of table 1
2 the selection;
d—
—
Bearing inside diameter;
F—
—
Load bearing are, for the centripetal bearing is refers to the radial load, for thrust bearing is refers to the axial load.
Friction coefficient values have certain scope changes.
When 05.
Cf 0 or less, the value of the friction coefficient is larger;
When 1.
Zero cf acuity, small friction coefficient desirable values (
Where C rated dynamic load)
。
In the occasions with low friction torque requirements, appropriate chooses single-row radial ball bearing, double row centripetal spherical bearings, single row centripetal short cylindrical roller bearing.
NMB miniature bearing starts up, the value of the friction torque is probably higher than the press type calculation.
Accurately calculate PAM based on green bearing friction torque measurement result, put forward the following more accurate calculation formula of total bearing friction torque is composed of two, namely type: 0 m -
—
Related to the bearing type, speed, and lubricant properties moment, unit for n. mm;
1M—
—
Is related with the affected by load bearing friction torque, the unit is n. mm.
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