CARB® toroidal roller bearings – a revolutionary ... - Acorn Bearings

1 Product information 2 Recommendations 3 Product data
Page ............. 3 Tapered seating Page ............. 37
Various larger CARB toroidal roller
bearings that have a loose or a transition
fit in the housing can be removed
using a tool with hooks that pass
between the rollers and grip the outer
ring from behind (➔ fig 4 ), so that the
withdrawal forces are applied directly
to the outer ring and the rollers do not
become jammed between the rings.
Fig
4
2
Dismounting from
a tapered seating
As bearings with a tapered bore come
free from their seating very suddenly it
is necessary to provide a stop of some
sort to limit their axial movement. An
end plate screwed to a shaft end or a
lock nut (➔ fig 5 ) serve this purpose.
The lock nut should be unscrewed a
few turns.
Small CARB toroidal roller bearings
can be removed with the aid of a dolly
or a drift of special design (➔ fig 6 ).
A few blows directed at the dolly are
sufficient to drive the inner ring from
its tapered seating.
Medium-sized CARB toroidal roller
bearings can be withdrawn using a
mechanical puller or a puller with a
hydraulic assistance. To avoid damaging
the bearing, the puller should be
applied centrically.
The removal of large bearings is
greatly facilitated if the oil injection
method is employed.
.
Schematic sketch of tool for removal of CARB bearings
from a non-split housing
The lock nut is left on the shaft thread to provide a stop
Fig
5
Fig
6
Removal of a small CARB toroidal roller bearing using a drift
of special design
35