Hiwin MG Series - Height and Width Accuracy

12
Product description
Assembly instructions
Linear Guideways
GW-04-0-EN-1910-MA
3.5 Accuracy – height and width
Height tolerance of H: Permissible absolute dimension variance of height H, measured between centre of screw-on
surface C and underside of rail A, with block in any position on the rail.
Height variance of H: Permissible variance of height H between several blocks on a rail, measured in the same rail posi-
tion.
Width tolerance of N: Permissible absolute dimension variance of width N, measured between centre of screw-on
surfaces D and B, with block in any position on the rail.
Width variance of N: Permissible variance of width N between several blocks on a rail, measured in the same rail posi-
tion.
Table 3.4 Height and width tolerances – HG, QH, EG, QE, CG, WE, QW, RG and QR series
Size Accuracy class Height tolerance
of H (
TH
)
Width tolerance
of N
Height variance
of H
Width variance
of N
15, 17, 20, 21 C (Normal) ± 0.1 ± 0.1 0.02 0.02
H (high) ± 0.03 ± 0.03 0.01 0.01
P (Precision) 0/– 0.03
1)
± 0.015
2)
0/– 0.03
1)
± 0.015
2)
0.006 0.006
SP (Super Precision) 0/– 0.015 0/– 0.015 0.004 0.004
UP (Ultra Precision) 0/– 0.008 0/– 0.008 0.003 0.003
25, 27, 30, 35 C (Normal) ± 0.1 ± 0.1 0.02 0.03
H (high) ± 0.04 ± 0.04 0.015 0.015
P (Precision) 0/– 0.04
1)
± 0.02
2)
0/– 0.04
1)
± 0.02
2)
0.007 0.007
SP (Super Precision) 0/– 0.02 0/– 0.02 0.005 0.005
UP (Ultra Precision) 0/– 0.01 0/– 0.01 0.003 0.003
45, 50, 55 C (Normal) ± 0.1 ± 0.1 0.03 0.03
H (high) ± 0.05 ± 0.05 0.015 0.02
P (Precision) 0/– 0.05
1)
± 0.025
2)
0/– 0.05
1)
± 0.025
2)
0.007 0.01
SP (Super Precision) 0/– 0.03 0/– 0.03 0.005 0.007
UP (Ultra Precision) 0/– 0.02 0/– 0.02 0.003 0.005
65 C (Normal) ± 0.1 ± 0.1 0.03 0.03
H (high) ± 0.07 ± 0.07 0.02 0.025
P (Precision) 0/– 0.07
1)
± 0.035
2)
0/– 0.07
1)
± 0.035
2)
0.01 0.015
SP (Super Precision) 0/– 0.05 0/– 0.05 0.007 0.01
UP (Ultra Precision) 0/– 0.03 0/– 0.03 0.005 0.007
Unit: mm
1)
Full assembled linear guideway
2)
Unmounted linear guideway
Table 3.5 Height and width tolerances – MG series
Size Accuracy class Height tolerance
of H
Width tolerance
of N
Height variance
of H
Width variance
of N
05, 07, 09,
12, 15
C (Normal) ± 0.04 ± 0.04 0.03 0.03
H (high) ± 0.02 ± 0.025 0.015 0.02
P (Precision) ± 0.01 ± 0.015 0.007 0.01
Unit: mm