6303 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	Specifications Met		Each
6303	17mm	47mm	14mm	Steel	3,000	1,450	22,300	Lubricated	-20° to 230°	ABEC-1	DIN 625-1	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
6303	17mm	47mm	14mm	Steel	2,300	1,400	9,300	Lubricated	10° to 200°	ABEC-1	00000000	000000

Ultra-Corrosion-Resistant Stainless Steel Ball Bearings

These 316 stainless steel bearings are more corrosion resistant than our other stainless steel bearings, but they have a lower load capacity.

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
6303	17mm	47mm	14mm	316 Stainless Steel	230	150	840	Required	-40° to 140°	Not Rated	00000000	000000

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
6204, 6303	47mm	14mm	1,400	48.86mm-48.97mm	0.203mm-0.508mm	0.749mm-1.25mm	0.5°	301 Stainless Steel	Rockwell C40	0000000	000000