SKF ConCentra ball bearings and
units – a truly innovative concentric
locking technology
SKF ConCentra ball bearings and units are
based on:
the reliable, proven design of SKF cast •
iron housings
a SKF Y-bearing in the YSP 2 SB series•
the patented SKF ConCentra stepped •
sleeve
The stepped sleeve is characterized by its
highly efficient, low cross section design.
SKF ConCentra ball bearings are filled
with a high-quality, long-lasting grease that
in most cases provides maintenance-free
operation. For operating conditions that
make relubrication necessary, the units are
provided with a grease fitting.
SKF ConCentra ball
bearing units
SKF ConCentra ball bearing units are avail-
able with plummer (pillow) block or flanged
housings († fig. 1, 2 and 3) in
the SY 5(00) M, FY 5(00) M, FYTB 5(00) •
M series for metric shafts
the SY 5(00) U/AH, FY 5(00) U/AH, FYTB •
5(00) U/AH series for inch shafts.
The housings are made from grey cast iron.
They have a concave sphered bore and can,
together with the incorporated bearing, ac-
commodate initial misalignment.
The attachment holes cast in the base of
plummer blocks are oblong, to easily and
accurately align the bearing units and shaft.
Housings in U/AH series for inch shafts
feature a solid base.
The housing paint provides very good
corrosion resistance. A solventless rust in-
hibitor protects unpainted surfaces.
Fig. 1
Fig. 3
Fig. 2
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