Ball Screw specifications

Lead (mm)

1

BCD (mm)

4.15

Thread minor diameter  (mm)

3.4

Threading direction/
no. of threaded grooves

Right-hand, 1

No. of circuits

3 rowsX 1 turn

Clearance symbol

G0

GT

G2

Axial clearance (mm)

0

0.005 Max

0.02 Max

Basic dynamic load ratingCa(kN)

0.29

Basic static load rating  C0a(kN)

0.42

Preload torque (N·m)

¡­9.8×10-3

-

Spacer ball

None

 

Unit : mm

1kN¡Ö102kgf

 

Ball Screw model No.

Stroke

Screw-shaft length

Screw-shaft
longitudinal-axis
runout

D

Nut
circumferential
runout

H

Flange
perpen-
dicularity

I

Shaft
thread
runout

J

L1

L2

L3

BNK 0401-3G0 + 77LC3Y

20

44

54

77

0.015

0.009

0.008

0.008

BNK 0401-3G0 + 77LC5Y

0.025

0.012

0.010

0.010

BNK 0401-3G2 + 77LC7Y

0.035

0.020

0.014

0.014

BNK 0401-3G0 + 97LC3Y

40

64

74

97

0.020

0.009

0.008

0.008

BNK 0401-3G0 + 97LC5Y

0.025

0.012

0.010

0.010

BNK 0401-3G2 + 97LC7Y

0.035

0.020

0.014

0.014

BNK 0401-3G0 + 127LC3Y

70

94

104

127

0.025

0.009

0.008

0.008

BNK 0401-3G0 + 127LC5Y

0.035

0.012

0.010

0.010

BNK 0401-3G2 + 127LC7Y

0.050

0.020

0.014

0.014