REXNORD - MARBETT - MCC
B81
A
A C
D
A
A C
D
17
2,5
3
3
3,5
4
4
20
3
3
3
4
4
4
25
3
3
3
4
4
4
30
3
3
3
4
4
4
35
3
4
4
4
6,5
6,5
40
4
4
4
6,5
6,5
6,5
45
4
4
4
6,5
6,5
6,5
50
4
5
4
6,5 16,5
6,5
Mounting
Assembly instructions
1
- With waterproof bearings the rubber sealing units must be greased before mounting
to avoid initial dry running on the shaft. The grease must Ill only the space in between the
two sealing lips.
2
- The bearing must be locked onto the shaft after the support mounting Lange has been
fully tightened. This is necessary to allow the bearing to assume
its correct alignment on
the shaft without undue axial stresses. Always tighten the screws diagonally.
Locking of the bearing by grub
screws
3
- The table gives the recommended maximum tightening couples for the grub screws
and the size of the hexagonal to use.
Locking of the bearings by
eccentric collar
4
- Tighten the collar by turning it with a punch in the same direction as the rotation of
the shaft.
5
- Hand tighten the grub screw. The screw driver dimension and the tightening couple
are given in the table above (Ref.
D
series bearings).
Assembly / removal of the
protection cover
6
- Assembly. The sealing unit of open end covers must be greased to avoid initial dry
running on the shaft. The grease must Ill only the space in between the two sealing
lips.
7
- Removal. Insert a screw driver into the groove provided for and force the cover out.
Int.
dia.
bearing
mm
Sc. driver size
mm
Max. tightening couple
Nm
Bearings
Bearings
Bearings
Bearings