608 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
608	8mm	22mm	7mm	Steel	730	300	36,000	Lubricated	-20° to 230°	ABEC-1	DIN 625-1	0000000	00000

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
608	8mm	22mm	7mm	Steel	570	300	20,000	Lubricated	10° to 200°	ABEC-1	00000000	000000

Stainless Steel Ball Bearings

Bearings are 440C stainless steel for good corrosion resistance.

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
608	8mm	22mm	7mm	440C Stainless Steel	590	300	40,000	Lubricated	-40° to 240°	ABEC-3	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
608	8	22	7	440C Stainless Steel	570	300	20,000	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
608	8mm	22mm	7mm	316 Stainless Steel	120	95	1,600	Required	-40° to 140°	Not Rated	0000000	000000

Plastic Ball Bearings

These acetal bearings have good all-around corrosion and chemical resistance.

316 stainless steel balls have excellent corrosion resistance.

Glass balls have even more corrosion resistance than stainless steel balls.

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
316 Stainless Steel Ball
Open
608	8mm	22mm	7mm	Acetal Plastic	40	30	1,600	Not Required	-40° to 180°	Not Rated	0000000	00000
Glass Ball
Open
608	8mm	22mm	7mm	Acetal Plastic	42	33	1,600	Not Required	-40° to 180°	Not Rated	00000000	00000

Flanged Ball Bearings

The flange ensures proper positioning inside a tube or housing.

440C stainless steel bearings are more corrosion resistant than steel 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

Flanged Bearing

				Flange			Radial Load Cap., lbs.
Bearing Trade Number	For Shaft Dia.	For Housing ID	Wd.	OD	Thick.	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	ABEC Rating		Each
608	8mm	22mm	7mm	25mm	1.5mm	440C Stainless Steel	590	240	39,000	Lubricated	-50° to 300°	ABEC-3	000000000	000000
608	8mm	22mm	7mm	25mm	1.5mm	Steel	740	310	39,000	Lubricated	-50° to 300°	ABEC-3	000000000	0000

Lubrication-Free Plastic Flanged Ball Bearings

Install these acetal bearings in caustic environments and where lubrication can’t be used. They have good all-around corrosion and chemical resistance. The flange ensures proper positioning inside a tube or housing.

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

				Flange			Radial Load Cap., lbs.
Bearing Trade Number	For Shaft Dia.	For Housing ID	Wd.	OD	Thick.	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	ABEC Rating		Each
Shielded
608	8mm	28mm	7mm	30mm	1.5mm	Acetal Plastic	20	15	2,200	Not Required	-40° to 175°	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
38, 608	22mm	7mm	550	23.9mm-23.97mm	0.203mm-0.508mm	0.749mm-1.25mm	0.5°	301 Stainless Steel	Rockwell C40	0000000	000000