Page 238 - Y-bearing-units

Y-bearing take-up units

Designs Fig. 1

Y-bearing take-up units consist of a cast housing
and an insert bearing († fig. 1). These units
are typically mounted in take-up frames and
connected by an adjustment screw. A grease fitting
is provided in the housing for relubrication.
Standard Y-bearing take-up units can be located
on the shaft via the inner ring of the insert
bearing with either:

• grub (set) screws
• an eccentric locking collar
The Y-bearing is sealed with either:

• the standard integral seal
• the standard integral seal and an additional
flinger Fig. 2

For additional information about Y-bearings,
refer to the section Y-bearings, starting on
page 79.

Data – general
H 1
Dimensions
The boundary dimensions of SKF Y-bearing
take-up housings in the:
• TU series are in accordance with
ISO 3228:1993 A 1
• TUJ series are in accordance with
JIS B 1559-1995

Tolerances
The tolerances († fig. 2), which are in accordance
with ISO 3228:1993, are:
• ± 0,25 mm for the distance between the
guide surfaces H 1
• within the tolerance range H13 for the width
of the guide surfaces A 1
Information about the tolerances of the inner
ring bore diameter can be found in the section
Y-bearings on page 89.

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