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ManualsBrandsBrowning ManualsBushings1/2" x 1/4" Split Taper Bushing w/ 1-7/8" Bore

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Grade 10 Balls

Superior 360 Locking

Anti-Rotation Rivet

Contact Seal

Semi-Solid Cast Iron

Base

Series

Select Features

Precision Hardened and

Honed Rings

For quieter operation

and less vibration.

Manufactured with high

quality 52100 steel.

The Browning BOA con-

centric collar with a sin-

gle cap screw provides

excellent holding power.

The collar is installed

over the slotted inner ring

on the shaft concentri-

cally. Designed for no

shaft marring or burring

with minimal runout for

less vibration.

An anti-rotation rivet

prevents outer ring creep

or rotation within the

housing. This reduces

heat buildup and prolongs

useful bearing life.

Positive contact

molded rubber lip with

an auxiliary flinger for

proven effective sealing

against contaminants.

The rugged base design

provides an excellent

mounting foundation.

This is integral to prevent

sheet metal “buckling.”

Inner rings are zone hardened to maintain ballpath

hardness while keeping inner ring extension soft for a

precision t with the concentric collar. Both ballpaths

are honed for quieter operation and less vibration. See

cross-section detail – left.

Browning BOA concentric ball bearings are segmented

into two series: normal duty for general purpose use and

medium duty for heavier loads.

200 = Normal duty

300 = Medium duty

Browning BOA concentric ball bearings incorporate a

unique concentric locking collar design for better grip on

the shaft and less vibration during operation. The BOA-

LOC concentric clamp collar, with a single cap screw,

provides increased reliability without marring or burring the

shaft. The 360° clamping force reduces vibration through

improved concentricity.

Browning offers BOA concentric “off-the-shelf” in popular

Air Handling pillow block shaft sizes ranging from 3/4”

to 2 7/16”. Air Handling features may be added to other

Browning B-loc units simply by designating “AH” as a

sufx to the base nomenclature. Example: VF2B 216 AH.

Contact Browning for availability of non stock AH units.