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High-Accuracy Series

High rigidity and high load capacity with low friction

Substantially increasing the number of balls in both HA Type and HS Type achieves higher rigidity and load
capacity as well as reduced frictional resistance, compared to our conventional models.

HA Type HS Type

For example, compared with LA35, the following HA models For example, compared with LS30, the following HS models
feature: feature:
● the same dynamic load rating, at one size smaller (HA30) ● the same dynamic load rating, at one size smaller (HS25)
● the same rigidity, at two sizes smaller (HA25) ● the same rigidity, at three sizes smaller (HS15)
● 120% higher rigidity with one-sixth friction (HA35) ● 110% higher rigidity with one-fifth friction (HS30)

Fig. 5 Comparisons of dynamic load rating Fig. 8 Comparisons of dynamic load rating

200 000 LA 80 000 LS
160 000 HA 70 000 HS

Dynamic load rating C [N] Dynamic load rating C [N] 60 000

120 000 50 000 One size smaller
80 000 40 000
One size smaller

30 000

40 000 20 000

10 000

0 30 35 45 55 0 20 25 30 35
25 Model No. 15 Model No.

2 500 Fig. 6 Comparisons of rigidity 1 200 Fig. 9 Comparisons of rigidity
2 000 1 000
1 500 LA LS
HA 800 HS

Two sizes smaller Three sizes smaller

Rigidity [N/ m] Rigidity [N/ m] 600

1 000

400

500 200

0 30 35 45 55 0 20 25 30 35
25 Model No. 15 Model No.

Fig. 7 Comparisons of dynamic friction force and rigidity Fig. 10 Comparisons of dynamic friction force and rigidity

1 600 Z3 rigidity for LA Z3 dynamic friction force for LA 80 Dynamic friction force [N] 8 Dynamic friction force [N]
1 400 Z1 rigidity for HA Z1 dynamic friction force for HA 70 Rigidity [N/ m] 800 Z3 rigidity for LS Z3 dynamic friction force for LS
1 200 60
One-sixth of dynamic friction Z1 rigidity for HS Z1 dynamic friction force for HS 7
force while improving 700

600 One-fifth of dynamic friction 6

Rigidity [N/ m] 1 000 rigidity to 120% 50 500 force while improving 5
rigidity to 110% 4
40
800 400

30 3
600 300

20 2
400 200

10 1
200 100

0 0
0 0

25 30 35 45 55 15 20 25 30 35

Model No. Model No.

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