The Timken Company - Aurora Bearing COM Series Spherical Bearings (PTFE Liners Available)

Ball - Alloy steel - heat treated - hard chrome plated.
Race - Low carbon steel - inside diameter protective coated for corrosion resistance - oil coated.
PTFE Liners available upon request. Specify by adding suffix "T". Ex.: COM-8T. (PTFE lined parts have no lubrication grooves in race. Lubrication holes are manufacturer's option.)

Unit of Measure

Items	COM-3 Aurora Bearing COM Series Spherical Bearings (PTFE Liners Available)	COM-3T Aurora Bearing COM Series Spherical Bearings (PTFE Liners Available)	COM-4 Aurora Bearing COM Series Spherical Bearings (PTFE Liners Available)	COM-4T Aurora Bearing COM Series Spherical Bearings (PTFE Liners Available)	COM-5 Aurora Bearing COM Series Spherical Bearings (PTFE Liners Available)
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
H - Race Width	N/A .218 in	N/A .218 in	N/A .250 in	N/A .250 in	N/A .281 in
W - Ball Width	N/A .281 in	N/A .281 in	N/A .343 in	N/A .343 in	N/A .375 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
M - Chamfer	N/A .015 in	N/A .015 in	N/A .022 in	N/A .022 in	N/A .032 in
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 11 º	N/A 11 º	N/A 13.5 º	N/A 13.5 º	N/A 12 º
Radial Static Limit Load Capacity	N/A 3,250 lbs	N/A 3,250 lbs	N/A 4,950 lbs	N/A 4,950 lbs	N/A 6,475 lbs
Approximate Brg. Weight	N/A .01 lb	N/A .01 lb	N/A .02 lb	N/A .02 lb	N/A .03 lb
Type of Lubrication	N/A Groove and Oil Hole	N/A PTFE liner	N/A Groove and Oil Hole	N/A PTFE liner	N/A Groove and Oil Hole