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Boyo Bearing Co.,Ltd

Address:Village Ningxin Ningwei Town Xiaoshan Hangzhou, Hangzhou, Zhejiang, China

Tel:+86-510-11368463

M/P:+8613861854501

E-mail:sales@bywb-bearing.com

BALL BEARINGS TORQUE FACTORS

- May 24, 2018 -

BALL BEARINGS TORQUE FACTORS

FACTOR

TORQUE EFFECT

Ball size

Smaller gives lower torque

Number of balls

Fewer gives lower torque

Retainer

Crown gives lower torque, loose clinch for ribbon type gives lower torque

Radial play

Higher gives lower torque

Lubricant

Higher viscosity gives higher torque

Lubricant fill

Higher percentage gives higher torque

Applied load

Higher load gives higher torque


The chart below can be used as a simple guide to expected average ball bearing torque levels for individual ball bearings with oil lubricant, however, the user must be cautioned that real-life torque values will vary considerably according to the application.

AVERAGE BEARING TORQUE (GM-CM)

BYWB
BEARING SIZE
(Inches Series)

RETAINER
TYPE

BALL SIZE
Inch(mm)

# BALLS

THRUST LOAD (gm)

MAX. AVG. TORQUE (gm-cm), OIL LUBE @ INDICATED THRUST

RADIAL PLAY Inches (mm)

MC2
.0001-.0003
.002-.008

MC3
.0002-.0004
.005-.010

MC5
.0005-.0008
.013-.020

09,0,1,1-4, 1-5 144, 155, 156, 168

Crown (W)

<1/16

<13

75

.18

.15

.14

2-5

Ribbon (J)

1/16

6

75

.18

.15

.14

2-6, 2, 166

Ribbon (J)

1/16

<8

75

.2

.16

.15

188

Ribbon (J)

2

8

400

.63

.54

.49

3

Ribbon (J)

3/32

7

400

.65

.55

.5

4

Ribbon (J)

3/32

8

400

.7

.6

.55



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