Under Carriage Components; Swivel Bearing - Kubota u15-3 Workshop Manual

WSM U15-3
d. Under carriage components

1. Swivel bearing

(4)
(1) Seal B
(2) S-mark
(3) Seal A
(4) R 1/8, for grease nipple
p
1) Number of teeth = 73
2) Backlash = 0.05 ~ 0.35 mm
(0.002 ~ 0.014 inch)
3) P.C.D. = 328.5
4) Induction-harden the inner and outer ring
raceways as well as the tooth flank and
bottom.
Raceway surface hardness: 50 ~ 60 HRC
Tooth flank and bottom surface hardness:
52 ~ 60 HRC
(See the Gear Specifications for gear
hardening details.)
5) Inner ring' "S" marking and outer ring's
stopper on the soft zone.
When installing the bearing, position the
soft zone where there is the least load.
6) Radial clearance (Measuring load) (0.03
~ 0.25)
Axial clearance (Measuring load) (0.03 ~
0.15)
(3)
Apply the nylon plug in position.
Details of the grease fitting
Machine front
II-34
(1)
(2)
Plug outer soft zone
Inner soft zone S - mark