9
This section describes the allowable tolerances for installation in order to maximize the
performance of NSK linear guides.
We recommend that the mounting errors e
1
or e
2
do not exceed the values shown in the table
below. Consult “Precision Machine Components” catalog for linear guides series not shown.
If the error readings are equal to or less than the above values, you have correctly assembled
the parts. For maximum accuracy, keep the readings below what is shown in the table.
If your readings are greater than these values, it is necessary to remove the parts and
start over. Please contact your local NSK office with any questions or for assistance. Visit
www.nskamericas.com
for contact information.
Recommended allowable installation error of the NS Series (Maximum)
Item
Model No.
15
20
25
30
35
Clearance
Z0, ZT
Permissible values of parallelism
in two rails: e
1
20
22
30
35
40
Permissible values of parallelism
(height) in two rails: e
2
375
m
m/500mm
Preload
Z1, ZZ
Permissible values of parallelism
in two rails: e
1
15
17
20
25
30
Permissible values of parallelism
(height) in two rails: e
2
330
m
m/500mm
Recommended allowable installation error of the NH Series (Maximum)
Item
Model No.
20
25
30
35
45
55
65
Clearance
Z0, ZT
Permissible values of parallelism
in two rails: e
1
30
40
45
55
65
80
110
Permissible values of parallelism
(height) in two rails: e
2
375
m
m/500mm
Preload
Z1, ZZ
Permissible values of parallelism
in two rails: e
1
20
25
30
35
45
55
70
Permissible values of parallelism
(height) in two rails: e
2
330
m
m/500mm
