REXNORD - MARBETT - MCC
B80
h 6
h 7
h 8
h 9
h 10
h 11
17
0
-11
0
-18
0
-27
0
-43
0
-
70
0
-110
20 ÷ 30
0
-13
0
-21
0
-33
0
-52
0
-
84
0
-130
35 ÷ 50
0
-16
0
-25
0
-39
0
-62
0
-100
0
-160
d
R 1,5
R 1,5
d
da h11
- 0,02
- 0,05
0
- 2
L
h
h
L + 2 • h
R 1,5
R 1,5
Shaft tolerances
Tolerances for grub screws/
eccentric collar locked bearings
• The tables indicate shaft diameter tolerances.
• Shaft ends must be rounded off in order to:
- ease assembly and avoid bearing jamming.
- avoid damages to the rubber parts of the sealing units.
• The shaft surface for the portion in contact with the sealing gaskets must be smooth
and free of defects (scratches etc.).
Tolerances for shaft shoulders
locked bearings
• Shaft ends must be rounded off in order to:
- ease assembly and avoid bearing jamming.
- avoid damages to the rubber parts of the sealing units.
• The shaft surface for the portion in contact with the sealing gaskets must be smooth
and free of defects (scratches etc.).
• The mounting shaft/bearing is free to facilitate assembly.
For heavy radial loads conditions it is recommended a slightly tight mounting.
ISO shaft tolerance
Tolerances in µm
h values are given in the support dimensional tables
Shaft
dia.
d
mm
Heavy loads
High speed
Normal
operation
²ight loads
²ow speed
Simple applications
plus
min.
plus
min.
plus
min.
plus
min.
plus
min.
plus
min.