Carriages:

Standard (HGH)

Flanged (HGW)

Rails:

HG Rails

Catalogue:

PDF catalogue

Other Products:

Standard Motion Guidance

Linear Bearings

Vee Bearings

Other Motion Guidance

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HG Series Linear Motion Guidance Systems - Preload & Precision

motion guidance systems accuracy

Preload Class

CLASS
SYMBOL
PRELOAD (KgF)
VERY LIGHT PRELOAD
Z0
0
LIGHT PRELOAD
Z1
0.02Co
MEDIUM PRELOAD
Z2
0.05Co
HEAVY PRELOAD
Z3
0.08Co

Accuracy Class (see drawing above)

ITEM / CLASS
NORMAL
HIGH
PRECISION
SUPER PRECISION
ULTRA PRECISION
Dim H Tolerance
+/- 0.15
+/-0.05
0 to -0.04
0 to -0.02
0 to -0.01
Dim N Tolerance
+/-0.10
+/-0.05
0 to -0.05
0 to -0.03
0 to -0.015
Dim variation of H
0.03
0.015
0.007
0.005
0.003
Dim variation of N
0.03
0.02
0.01
0.007
0.003
Running parallelism on Surface C to Surface A
Running parallelism on Surface D to Surface B