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Ball Screw Support Units

Screw support seats are key components that ensure the stable operation of ball screws, responsible for bearing axial loads and maintaining rotational accuracy. The product line includes standardized specifications such as square and round shapes, and is divided into standard and economy types according to needs. Different preload levels (light, medium, high) and surface treatments (nickel plating, blackening) can be flexibly selected, and they are widely used in semiconductor equipment and precision stages.

Linear Motion Components
Ball Screw Support Units
All Fixed Side Heavy Load Fixed Side Support Side Lock Nut Spacer Ring
Specifications
Material
Surface Treatment
M (mm)
Single roller load - Basic dynamic load (C) (N)
Ød (mm)
T (mm)
W (mm)
W1 (mm)
H (mm)
H1 (mm)
P (mm)
Ød1 (mm)
Ød2 (mm)
Z (mm)
N (±0.02) (mm)
C (+0, -0.02) (mm)
Recommended shaft end machining dimensions - matching the outer diameter ØD (mm) of the ball screw shaft
Recommended shaft end machining dimensions: Shaft end outer diameter Ød (mm)
Recommended shaft end machining dimensions: ØA (mm) for the retaining ring groove.
Recommended shaft end machining dimensions: retaining ring groove dimension E (mm)
Recommended shaft end machining dimensions: retaining ring groove dimensions F (mm)
Recommended shaft end machining dimensions: retaining ring groove dimensions G (mm)
P1 (mm)
Ød3 (mm)
ØR (mm)
Mouth G (mm)
F (mm)
ØD (-0.01, -0.03) (mm)
PCD
C (+0, -0.02) (mm)
ØD(-0.01, -0.03) (mm)
PCD (mm)
T1 (mm)
T2 (mm)
T3 (mm)
N ±0.02 (mm)
C (+0, -0.04) (mm)
P2 (mm)
P3 (mm)
M1 (mm)
Mouth S (mm)
Use C-rings
Use C-type Couplings (for shafts)
grade
Recommended shaft end machining dimensions: Shaft end machining ØA (mm)
Recommended shaft end machining dimensions: Shaft end machining B (mm)
Recommended shaft end machining dimensions: Shaft end machining C (mm)
Recommended shaft end machining dimensions - Nominal thread M (mm)
Recommended shaft end machining dimensions: Nominal thread length L (mm)
Recommended shaft end machining dimensions: Spacer ring length T4 (mm)
grade
E (mm)
T1 (mm)
E1 (mm)
T2 (mm)
E2 (mm)
ØD (mm)
ØD1 (mm)
ØD2 (mm)
L (mm)
L1 (mm)
L2 (mm)
A (mm)
PCD (1) (mm)
PCD (2) (mm)
Q (mm)
Preload level
bearing assembly
Axial limit load (N)
Preload (N)
Axial stiffness (N/um)
Starting torque (N・cm)
Ød (mm)
L3 (mm)
L4 (mm)
M (mm)
Ød4 (mm)
L5 (mm)
Weight (Kg)
T (mm)
ØD (mm)
ØD1 (mm)
ØD2 (mm)
PCD (mm)
Ød1 (mm)
Ød2 (mm)
P (mm)
Tightening torque (N・cm) (Reference)
Anti-loosening torque (N・cm)
S (mm)
W (mm)
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