RPMBRND ZB6303

RPMBRND ZB6303

RPMBRND

RPMBRND ZB6303

ZB6303 PART NUMBER

Four-Bolt Square Roller Bearing Unit - Spherical Roller, 3-3/16 in Bore , Non-Expansion Bearing (Fixed), Cast Iron, Adapter Mounted

RPMBRND - RPMBRND ZB6303

New design tapered adapter mount spherical roller bearing units provide versatile arrangements for supporting shafts that carry substantial radial or a combination of radial and thrust loads

Incorporates an integral lock nut, sleeve and inner race along with Optical Strain Sensing (OSS) technology and a Positive Locking System (PLS) that visually indicates when the bearing is tightened to the shaft correctly

These features not only yield the most secure shaft mounting, running accuracy and ability to accommodate undersize shafting, but guarantee the correct installation every time and make removal a snap

Offers higher dynamic load ratings than the previous design, runs cooler and runs quieter yielding a bearing that lasts longer in the application

Dynamic and static misalignment capability has been increased to ±2.0°

Rollers are aligned by the retainers and the inner race, so despite misalignment, the roller load is always equally distributed across the surface; prevents high edge load stresses on the rollers and therefore it is not necessary to derate the bearing for misalignment conditions within the ±2.0°

Easy to mount and dismount, sealed, prelubricated and does not require adjustment during mounting

Additional key features include: choice of various seal types based upon application; all seals assure protection with up to ±2.0° of misalignment in all directions, provide operation on hardened and ground inner ring extensions and can be removed without disassembly of the bearing; field adjustable bearing clearances based upon application need; fully self-aligning spherical roller bearing that accommodates for operational misalignment or misalignment due to installation; case-carburized inner races provide a hard, fatigue-resistant surface and a tough, crack-resistant ductile core

Cast iron housing

Clearance seal


SPECIFICATIONS

Bore Diameter 3-3/16 in
Seal Type Clearance/Non-Contact
Bolt Center-To-Center Length 6.7188 in
Overall Depth 5-9/64 in
Overall Length/Diameter 8.4375 in
Radial Dynamic Load Capacity 82000 lbf
Overall Height 8-7/16 in
Radial Static Load Capacity 91900 lbf
Flange Mounting Type Four-Bolt Square
Maximum Rpm 2400 RPM
Bearing Type Spherical Roller
Finish/Coating Powder Coated
Bore Type Round
End Type Closed
Housing Material Cast Iron
Lubrication Type Lubrication Fitting
Locking Device Adapter Mounted
Standards Met ANSI/ABMA STD 9-1990
Expansion Type Non-Expansion Bearing (Fixed)
Series 6000
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RPM GROUP

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