120 mm Housing ID Bearings

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About Ball and Roller Bearings

Ball Bearings

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

Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.

Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.

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
6311	55mm	120mm	29mm	Steel	17,100	10,600	8,500	Lubricated	-20° to 230°	ABEC-1	DIN 625-1	00000000	000000

Shielded

					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
6311-2Z	55mm	120mm	29mm	Steel	16,000	10,100	5,600	Lubricated	-20° to 230°	ABEC-1	00000000	000000

Sealed

					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
6311-2RS	55mm	120mm	29mm	Steel	17,100	10,600	3,500	Lubricated	-20° to 230°	ABEC-1	DIN 625-1	0000000	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.

Sealed bearings have even better resistance to dust and contaminants than open bearings.

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
6311	55mm	120mm	29mm	Steel	13,100	10,100	3,300	Lubricated	10° to 200°	ABEC-1	00000000	0000000
Sealed
6311-2RS	55mm	120mm	29mm	Steel	13,100	10,100	3,300	Lubricated	10° to 200°	ABEC-1	00000000	000000

Self-Aligning Ball Bearings

Open

With a spherical raceway and two rows of balls, these bearings compensate for shaft misalignment.

Open bearings dissipate heat more efficiently than sealed bearings.

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

					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	Misalignment Capability	Temp. Range, °F	ABEC Rating		Each
Open
2213	65	120	31	Steel	9,750	3,650	4,800	Required	4°	Not Rated	ABEC-1	00000000	0000000
2311	55	120	43	Steel	17,150	5,350	4,800	Required	4°	Not Rated	ABEC-1	00000000	000000

Ultra-Thin Ball Bearings

Open

These bearings have twice as many contact points as angular-contact ball bearings. Fit onto large-diameter hollow shafts to run air and hydraulic lines, electrical wiring, and other components through moving parts in assemblies such as index and rotary tables, packaging equipment, and robotics.

Open bearings dissipate heat more efficiently than shielded bearings.

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

			Radial Load Cap., lbs.		Thrust Load Cap., lbs.		Moment Load Cap., ft.-lbs.
For Shaft Dia.	For Housing ID	Wd.	Dynamic	Static	Dynamic	Static	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	ABEC Rating		Each
Steel Ring
Open
85mm	120mm	18mm	7,150	6,650	Not Rated	Not Rated	Not Rated	Not Rated	6,300	Lubricated	-50° to 130°	ABEC-1	00000000	0000000

Face-Mount Crossed-Roller Bearings

Mounting holes on the inner and outer rings allow for fastening onto hollow joints and shafts. The rollers face in alternating directions to allow for rigid, accurate motion under any combination of radial, thrust, and moment (twisting) loads. Use in applications where highly accurate motion is necessary, such as machine tools and industrial robots.

Open bearings dissipate heat more efficiently than sealed bearings.

Sealed bearings block out dust and other contaminants better than open bearings, but retain more heat.

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

				Combined Load Cap., lbs.
For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	Features		Each
Open
55	120	15	Steel	4,500	6,200	850	Required	0° to 230°	Lubrication Groove, Two Lubrication Holes	0000000	0000000
Sealed
55	120	15	Steel	4,500	6,200	650	Lubricated	0° to 210°	Lubrication Groove, Two Lubrication Holes	0000000	000000

Crossed-Roller Bearings

With a considerably larger ID than our Face-Mount Crossed-Roller Bearings, use these to run hydraulic lines, electrical wiring, and other components through the inside of the bearing. The rollers face in alternating directions to allow for rigid, accurate motion under any combination of radial, thrust, and moment (twisting) loads. Use in applications where highly accurate motion is necessary, such as machine tools and industrial robots.

Open bearings dissipate heat more efficiently than sealed bearings.

Sealed bearings block out dust and other contaminants better than open bearings, but retain more heat.

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

				Combined Load Cap., lbs.
For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	Features		Each
Open
80	120	16	Steel	7,200	9,700	750	Required	0° to 230°	Lubrication Groove, Two Lubrication Holes	0000000	0000000
Sealed
80	120	16	Steel	7,200	9,700	600	Lubricated	0° to 210°	Lubrication Groove, Two Lubrication Holes	0000000	000000

Spherical-Roller Bearings

Two rows of rollers give these bearings dynamic radial load capacities over five times higher than comparably sized tapered-roller bearings. Also known as rock crusher bearings, they handle heavy shock loads and are used for metal milling machinery, mining and oil field equipment, and in paper mills.

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

					Combined Load Cap., lbs.
For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Bearing Trade Number	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Max. Temp. Range, °F		Each
Open
65	120	31	22213	Steel	49,500	51,500	4,300	Required	390	000000	0000000