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CHG high precision cylindrical roller
bearings are used where very high
accuracy is required, Figure 1.
Typical areas of application for these
bearings include machine tools and
printing machinery. They are ideal as
non-locating bearings since they allow
unconstrained compensation of changes
in length during rotational movement
between the rollers and raceways.
Due to their high accuracy with high
radial rigidity, cylindrical roller bearings
in a high precision variant are also used –
in addition to their application as
non-locating bearings – where
high radial rigidity
high load carrying capacity
high accuracy.
is required of the bearing arrangement.
The standard series N10 of a single row
design and NN30 of a double row design
are a firmly established element of the
CHG Super Precision range, together with
the series N19 and NNU49 of smaller
cross-section for smaller centre
distances.
The design of all CHG high precision
cylindrical roller bearings is identified
as standard, Figure 6, by:
accuracy class SP
tapered inner ring bore for
adjustment of the radial internal
clearance and preload (taper 1:12)
by axial displacement on the tapered
shaft seat (with a cylindrical inner
ring bore if required)
solid brass cage
radial internal clearance C1.
Due to the high surface quality of
the ring raceways and rollers, CHG high
precision cylindrical roller bearings
are particularly suitable for grease
lubrication.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| QJ1016 NSK | 80 | 125 | 22 |
| QJ315 NSK | 75 | 160 | 37 |