3,300 rpm Bearings | McMaster-Carr

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About Ball and Roller Bearings

About Track Rollers

Also known as cam followers, track rollers have a thick outer roller that runs directly on a flat surface.

Ball 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.

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
6312-2RS	60mm	130mm	31mm	Steel	18,300	11,600	3,300	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
6212	60mm	110mm	22mm	Steel	9,050	7,250	3,300	Lubricated	10° to 200°	ABEC-1	00000000	0000000
6311	55mm	120mm	29mm	Steel	13,100	10,100	3,300	Lubricated	10° to 200°	ABEC-1	00000000	000000
Sealed
6014-2RS	70mm	110mm	20mm	Steel	6,600	5,900	3,300	Lubricated	10° to 200°	ABEC-1	00000000	000000
6311-2RS	55mm	120mm	29mm	Steel	13,100	10,100	3,300	Lubricated	10° to 200°	ABEC-1	00000000	000000

Tapered-Roller Bearings

Found anywhere from machine tool spindles to conveyor rollers, these bearings have a two-piece design that allows for adjustment.

				Radial Load Cap., lbs.		Thrust Load Cap., lbs.
For Shaft Dia.	For Housing ID	Wd.	Bearing Trade Number	Dynamic	Static	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F		Each
Steel Ring
Open
1"	2 7/16"	9/16"	15100/15245	2,700	12,100	1,600	12,400	3,300	Required	-60° to 200°	0000000	000000
1 1/8"	2 29/64"	9/16"	15113/15245	2,700	12,100	1,600	12,400	3,300	Required	-60° to 200°	00000000	00000
1 3/16"	2 7/16"	5/8"	15118/15244	2,700	12,100	1,600	12,400	3,300	Required	-60° to 200°	0000000	00000

Needle-Roller Thrust Bearings

Thinner rollers allow these bearings to fit in tighter spaces than tapered-roller thrust bearings. Because of the large contact area between the rollers and washers (not included), these bearings are great for medium to heavy duty, low-friction jobs. For use on hardened and ground surfaces.

Washers allow you to use the bearing on unhardened and unground surfaces.

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

Bearings

Bearing

			Thrust Load Cap., lbs.
For Shaft Dia.	OD	Thick.	Dynamic	Static	Max. Speed, rpm	Lubrication	For Shaft Surface Smoothness (Ra), microns	Temp. Range, °F	Specifications Met		Each
Steel Rollers
Open
2 1/2"	3 1/4"	5/64"	6,200	37,500	3,300	Required	0.2	0° to 240°	__	0000000	000000
75mm	100mm	4mm	12,400	60,000	3,300	Required	0.2	0° to 240°	DIN 5405-2	000000	00000

Washers

Washer

For Shaft Dia.	OD	Thick.	Washer Material	Specifications Met		Each
2 1/2"	3 1/4"	0.032"	Steel	__	00000000	00000
75mm	100mm	1mm	Steel	DIN 5405-3, ISO 303	00000000	00000
75mm	100mm	5.75mm	Steel	__	00000000	00000

Mounted Ball Bearings

Bearings are self-aligning to compensate for shaft misalignment. Seals block out dust and contaminants.

Bearings with nickel-plated cast iron housing are more corrosion resistant and durable than bearings with a cast iron housing.

Bearings with a set screw secure to shafts without using a collar. They let shafts rotate in both directions, so they’re good for applications where you need to reverse. However, the set screw will leave some marring on the shaft.

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

Bearings

With Set Screw

		Overall			Mounting			Radial Load Cap., lbs.
For Shaft Dia.	Center Ht.	Ht.	Lg.	Wd.	Hole Lg.	Hole Wd.	Hole Ctr.-to-Ctr.	Dynamic	Static	Max. Speed, rpm	Temp. Range, °F	Alignment Style	Lubrication		Each
Sealed Steel Bearings with Nickel-Plated Cast Iron Housing
Shaft Mount Type: Set Screw
1 1/2"	1 15/16"	4 7/32"	7 1/4"	2 1/4"	13/16"	21/32"	5 13/32"	6,540	4,000	3,300	0° to 210°	Self Aligning	Lubricated	0000000	000000

Permanently Lubricated Mounted Ball Bearings

A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. Seals block out dust and contaminants.

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

		Overall			Mounting			Radial Load Cap., lbs.
For Shaft Dia.	Center Ht.	Ht.	Lg.	Wd.	Hole Lg.	Hole Wd.	Hole Ctr.-to-Ctr.	Dynamic	Static	Max. Speed, rpm	Temp. Range, °F	Alignment Style	Lubrication		Each
Sealed Steel Bearings with Cast Iron Housing
Shaft Mount Type: Set Screw
1 3/4"	2 1/8"	4 3/16"	7 15/32"	2 1/4"	1 1/8"	9/16"	5 7/8"	7,350 lbs.	4,600 lbs.	3,300	10° to 175°	Self Aligning	Lubricated	000000	0000000

Mounted Roller Bearings

Roller bearings have a thinner profile and larger contact area than ball bearings, making them stronger and more space-efficient than ball bearings.

Sealed bearings block out dust and contaminants.

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

Sealed Tapered-Roller Bearings

Sealed Tapered-Roller Bearing

		Overall			Mounting			Radial Load Cap., lbs.
For Shaft Dia.	Center Ht.	Ht.	Lg.	Wd.	Hole Lg.	Hole Wd.	Hole Ctr.-to-Ctr.	Dynamic	Static	Dynamic Thrust Load Cap., lbs.	Max. Speed, rpm	Temp. Range, °F	Alignment Style	Lubrication		Each
Steel Bearings with Cast Iron Housing—Shaft Mount Type: Set Screw
1 1/2"	2 1/8"	4 1/4"	7 7/8"	3 3/8"	3/4"	5/8"	6 1/4"	7,850	33,000	2,550	3,300	-60° to 250°	Fixed Alignment	Lubricated	0000000	0000000
1 5/8"	2 1/8"	4 1/4"	7 7/8"	3 3/8"	3/4"	5/8"	6 1/4"	7,850	33,000	2,550	3,300	-60° to 250°	Fixed Alignment	Lubricated	0000000	000000
40mm	2 1/8"	4 1/4"	7 7/8"	3 3/8"	3/4"	5/8"	6 1/4"	7,850	33,000	2,550	3,300	-60° to 250°	Fixed Alignment	Lubricated	0000000	000000

Mounted Roller Bearings with Four-Bolt Flange

The tapered rollers in these bearings support large shafts at high static loads. Seals block out dust and contaminants.

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

	Overall				Mounting		Radial Load Cap., lbs.
For Shaft Dia.	Ht.	Lg.	Wd.	Flange Thick.	Hole Dia.	Hole Ctr.-to-Ctr.	Dynamic	Static	Dynamic Thrust Load Cap., lbs.	Max. Speed, rpm	Temp. Range, °F	Alignment Style	Lubrication		Each
Sealed Tapered-Roller Bearings
Steel Bearings with Cast Iron Housing—Shaft Mount Type: Set Screw
1 1/2"	5 3/8"	5 3/8"	3 1/2"	1 3/16"	1/2"	4 1/8"	7,850	33,000	2,550	3,300	-60° to 250°	Fixed Alignment	Lubricated	0000000	0000000
40mm	5 3/8"	5 3/8"	3 1/2"	1 3/16"	1/2"	4 1/8"	7,800	33,000	2,550	3,300	-60° to 250°	Fixed Alignment	Lubricated	0000000	000000

Threaded Track Rollers

Also known as cam followers, track rollers support loads while guiding and positioning work. Thread the stud directly into a component or secure with a nut for through-hole mounting.

Crowned rollers have a slight curve, which is invisible to the naked eye, to stay centered on surfaces that are not perfectly aligned and/or not perfectly flat.

Rollers with seal have end seals to protect rolling elements from dirt and contamination.

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

Metric

Roller, mm		Stud, mm		Thread			Shoulder, mm			Radial Load Cap., lbs.
Dia.	Wd.	Dia.	Lg.	Size	Pitch, mm	Lg., mm	Dia.	Lg.	Max. Speed, rpm	Static	Dynamic	Max. Temp., °F	Bearing Type		Each
Black-Oxide Steel Flat Rollers with Seal
40	20	18	36.5	M18	1.5	19	27	0.8	3,300	7,200	4,300	250°	Needle Roller	00000000	0000000
Black-Oxide Steel Crowned Rollers with Seal
40	20	18	36.5	M18	1.5	19	27	0.8	3,300	7,200	4,300	250°	Needle Roller	00000000	000000

Corrosion-Resistant Threaded Track Rollers

Chrome-Plated Steel

Also known as cam followers, track rollers support loads while guiding and positioning work. Thread the stud directly into a component or secure with a nut for through-hole mounting. All rollers have end seals to protect rolling elements from dirt and contamination.

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

Roller		Stud		Thread		Shoulder			Radial Load Cap., lbs.
Dia.	Wd.	Dia.	Lg.	Size	Lg.	Dia.	Lg.	Max. Speed, rpm	Static	Dynamic	Max. Temp., °F	Bearing Type		Each
Chrome-Plated Steel Flat Rollers with Seal
3/4"	1/2"	3/8"	7/8"	3/8"-24	3/8"	1/2"	1/32"	3,300	1,500	1,400	250°	Needle Roller	000000	000000