6208 Ball Bearings | McMaster-Carr

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About Ball and Roller Bearings

Ball Bearings

Open bearings dissipate heat more efficiently than shielded and sealed bearings.

For technical drawings and 3-D models, click on a part number.

Open

					Radial Load Cap., lbs.
Bearing Trade Number	For Shaft Dia.	For Housing ID	Wd.	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	ABEC Rating		Each
6208	40mm	80mm	18mm	Steel	5,550	3,650	8,300	Lubricated	-20° to 230°	ABEC-1	00000000	000000

Permanently Lubricated Ball Bearings

A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. Because it's solid, the lubricant blocks out water and dust, extending the life of the bearing.

For technical drawings and 3-D models, click on a part number.

					Radial Load Cap., lbs.
Bearing Trade Number	For Shaft Dia.	For Housing ID	Wd.	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	ABEC Rating		Each
Open
6208	40mm	80mm	18mm	Steel	5,050	5,050	5,000	Lubricated	10° to 200°	ABEC-1	00000000	000000

Permanently Lubricated Stainless Steel Ball Bearings

A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. The solid lubricant blocks out water and dust, extending the life of the bearing.

For technical drawings and 3-D models, click on a part number.

Metric Bearings

					Radial Load Cap., lbs.
Bearing Trade Number	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	ABEC Rating		Each
Open
6208	40	80	18	440C Stainless Steel	5,050	3,650	5,000	Lubricated	-10° to 200°	ABEC-1	00000000	0000000

Shims for Ball Bearing Housings

Also called tolerance rings, these rings are for use in stamped, molded, or worn housings to form a tight hold on the bearings. They work like a spring, creating tension between the bearing and the housing to hold the bearing in place. They also reduce vibration and compensate for some thermal expansion between the housing and the bearing and eliminate the need for keys, pins, and adhesives. They're made of stainless steel for corrosion resistance.

For technical drawings and 3-D models, click on a part number.

For Bearing
Trade No.	OD	Wd.	Static Radial Load Capacity, lbs.	Bearing Mount Bore Dia.	Thick.	Corrugation Ht.	Misalignment Capability	Material	Minimum Hardness		Each
Metric
6208	80mm	18mm	3,250	81.88mm-81.96mm	0.203mm-0.508mm	0.749mm-1.25mm	0.5°	301 Stainless Steel	Rockwell C40	0000000	000000