MGA31-3006 MGI21-4920
FAG enveloping circle gauge MGA 31 for setting the radial internal
clearance of cylindrical
roller bearings manufacturers NN3006-K to NN3038-K
and N1006-K to N1048-K.
Professional bearings with a tapered bore haveremovable outer rings.
The gauge is used to precisely set
the radial internal clearance or
preload of cylindrical roller
bearings. The raceway diameter of the
mounted outer ring is measured
using a conventional internal
gauge. This dimension is transferred
to the two hardened and precisionground measuring surfaces of the
enveloping circle gauge. The tapered shaft with the
premounted inner ring and roller
and cage assembly can then be
inserted in the gauge. The shaft is
moved axially by the hydraulic
method until the precision indicator
of the enveloping circle gauge
shows the required radial internal
clearance or preload. Ordering example for NN3006-K:
Products · Mounting/RepairMeasurement and inspection
Enveloping circle gauges FAG enveloping circle gauge MGA 21 for setting the radial internal
clearance of cylindrical roller
bearings NNU4920-K to NNU4964-K
and NNU4920 to NNU4964.Bearings of bore diameter 100 to320 mm have removable inner
rings.
In the FAG enveloping circle gauge
MGI 21, the internal enveloping
circle of the roller and cage
assembly is measured by two
hardened and precision ground
surfaces, one of which is movable.
After mounting of the outer ring,
the gauge is set to the internal
enveloping circle of the roller and
cage assembly. This dimension ismeasured using a snap gauge, for
example the SNAP-GAUGE…/… (see page 38).
It is then possible to set the inner
ring to the diameter that gives the
required radial internal clearance. Bearings with a tapered bore are
slid onto the tapered seat of the
shaft.
For bearings with a cylindrical bore,
preground inner rings are used(suffix F12) and finish ground to
the required raceway diameter. Ordering example for NNU4920:
FAG enveloping circle gauge MGI 21 for setting
the radial internal clearance or preload ofcylindrical roller bearings with removable innerring FAG enveloping circle gauge MGA 31 for settingthe radial internal clearance of cylindrical roller
bearings with removable outer ring 39