The Timken Company - Aurora Bearing PWB-TG & PWB-T Series Spherical Bearings - PTFE Lined - Self-Lubricating

Smarter Bearing Selection Is Here

The Timken ^® Syber ^® Bearing System Designer Tool now features Smart Selection, enabling users to find the right bearing faster by filtering options based on target life and key dimensions.

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Analyze Bearing Performance in an Application with Timken ^® Syber ^® Bearing System Designer

A powerful software tool that combines calculators and configurators to assist you with application design, bearing selection, installation, and troubleshooting. It’s free, easy-to-use, and accessible 24/7.

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Simplified Gear Force Analysis

Alex Waye, Timken Application Engineer, shows you how to instantly compute tangential, radial, and axial forces for better design decisions.

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Effective August 21st, 2023, the Naval Air Warfare Center Aircraft Division (NAWCAD) has disapproved Timken Aurora’s qualification status for SAE-AS81820 and SAE-AS81935 specifications. Timken Aurora is working diligently to get requalified.

Ball - Alloy steel - heat treated - hard chrome plated. Manufacturers option: 440C stainless steel - heat treated.
Race - 17-4 PH stainless steel - heat treated - PTFE Lined.
PTFE liner - (AT 3200) Permanently bonded to race inside diameter. Qualified to SAE-AS81820 Type A.
Staking Groove is available. When a staking groove is required, specify by adding suffix "G". Ex.: PWB-5TG

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Unit of Measure

Items	PWB-3T Aurora Bearing PWB-TG & PWB-T Series Spherical Bearings - PTFE Lined - Self-Lubricating	PWB-3TG Aurora Bearing PWB-TG & PWB-T Series Spherical Bearings - PTFE Lined - Self-Lubricating	PWB-4T Aurora Bearing PWB-TG & PWB-T Series Spherical Bearings - PTFE Lined - Self-Lubricating	PWB-4TG Aurora Bearing PWB-TG & PWB-T Series Spherical Bearings - PTFE Lined - Self-Lubricating	PWB-5T Aurora Bearing PWB-TG & PWB-T Series Spherical Bearings - PTFE Lined - Self-Lubricating
Bearing Type	N/A Plain	N/A Grooved	N/A Plain	N/A Grooved	N/A Plain
B - Ball Bore	N/A .1900 in	N/A .1900 in	N/A .2500 in	N/A .2500 in	N/A .3125 in
D - Outside Diameter	N/A .6250 in	N/A .6250 in	N/A .6250 in	N/A .6250 in	N/A .6875 in
W - Ball Width	N/A .437 in
H - Race Width	N/A .327 in	N/A .327 in	N/A .327 in	N/A .327 in	N/A .317 in
O - Ball Shoulder Diameter	N/A .30 in	N/A .30 in	N/A .30 in	N/A .30 in	N/A .401 in
P - Groove Depth	N/A	N/A .025 in	N/A	N/A .025 in	N/A
G - Groove Pitch Diameter	N/A	N/A .563 in	N/A	N/A .563 in	N/A
R - Grooved Radius	N/A	N/A .010 in	N/A	N/A .010 in	N/A
Ball Diameter	N/A .531 in	N/A .531 in	N/A .531 in	N/A .531 in	N/A .593 in
a - Misalignment Angle	N/A 15 º	N/A 15 º	N/A 15 º	N/A 15 º	N/A 14 º
Radial Static Limit Load	N/A 2,500 lbs	N/A 2,500 lbs	N/A 5,500 lbs	N/A 5,500 lbs	N/A 9,400 lbs
Axial Static Limit Load Capacity	N/A 1,770 lb	N/A 1,770 lb	N/A 1,770 lb	N/A 1,770 lb	N/A 1,640 lb
No Load Rotational Breakaway Torque	N/A .25 to 5.0 in·lb	N/A .25 to 5.0 in·lb	N/A .25 to 5.0 in·lb	N/A .25 to 5.0 in·lb	N/A .25 to 8.0 in·lb
Approximate Brg. Weight	N/A .03 lb	N/A .03 lb	N/A .03 lb	N/A .03 lb	N/A .04 lb