The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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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.: PNB-5TG
PNB-TG and PNB-T product image
PNB-TG & PNB-T Dimensional Drawing
Unit of Measure
Items PNB-TG and PNB-T product image
PNB-3T
Aurora Bearing PNB-TG & PNB-T Series Spherical Bearings - PTFE Lined - Self-Lubricating 		PNB-TG and PNB-T product image
PNB-3TG
Aurora Bearing PNB-TG & PNB-T Series Spherical Bearings - PTFE Lined - Self-Lubricating 		PNB-TG and PNB-T product image
PNB-4T
Aurora Bearing PNB-TG & PNB-T Series Spherical Bearings - PTFE Lined - Self-Lubricating 		PNB-TG and PNB-T product image
PNB-4TG
Aurora Bearing PNB-TG & PNB-T Series Spherical Bearings - PTFE Lined - Self-Lubricating 		PNB-TG and PNB-T product image
PNB-5T
Aurora Bearing PNB-TG & PNB-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 .5625 in N/A .5625 in N/A .6562 in N/A .6562 in N/A .7500 in
W - Ball Width N/A .281 in N/A .281 in N/A .343 in N/A .343 in N/A .375 in
H - Race Width N/A .218 in N/A .218 in N/A .250 in N/A .250 in N/A .281 in
O - Ball Shoulder Diameter N/A .293 in N/A .293 in N/A .364 in N/A .364 in N/A .419 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 .500 in N/A N/A .594 in N/A
R - Grooved Radius N/A N/A .010 in N/A N/A .010 in N/A
Ball Diameter N/A .406 in N/A .406 in N/A .500 in N/A .500 in N/A .562 in
a - Misalignment Angle N/A 10 º
Radial Static Limit Load N/A 3,975 lbs N/A 3,975 lbs N/A 6,040 lbs N/A 6,040 lbs N/A 8,750 lbs
Axial Static Limit Load Capacity N/A 150 lb N/A 150 lb N/A 430 lb N/A 430 lb N/A 700 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 .02 lb N/A .02 lb N/A .02 lb N/A .02 lb N/A .03 lb