Tapered-Roller Thrust Bearings

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System of Measurement

Shaft Diameter

For Load Direction

Combined Radial and Thrust

Roller Diameter

Roller Profile

Bearing Type

Dynamic Thrust Load Capacity

1,000 lb. to 9,999 lb.

10,000 lb. to 19,999 lb.

20,000 lb. to 29,999 lb.

30,000 lb. or greater

Static Thrust Load Capacity

Less than 10,000 lb.

10,000 lb. to 19,999 lb.

20,000 lb. to 99,999 lb.

100,000 lb. to 199,999 lb.

Bearing Seal Type

Roller Mount Type

Track Roller Type

Roller Width

Roller Bearing Type

Dynamic Radial Load Capacity

Less than 10,000 lb.

10,000 lb. to 19,999 lb.

Not Rated

Roller Material

Steel

Static Radial Load Capacity

Less than 10,000 lb.

10,000 lb. to 19,999 lb.

20,000 lb. to 29,999 lb.

Maximum Rotation Speed

Lubrication

Material

RoHS

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

EAR99

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Exempt

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44 Products

Extreme-Load Tapered-Roller Thrust Bearings

With thick, tapered rollers, these thrust bearings are the strongest we offer. The rollers spin inside a raceway instead of a cage, so there’s room for more rollers to support higher loads than three-piece designs. You’ll often find them on crane hooks and kingpins that connect semi-trailers to semi-tractors. However, they rotate at a fraction of the speed of other roller thrust bearings.

Since they come as one piece, you don’t need to assemble cages and washers to install. An outer band holds the rollers inside the raceway, keeping lubricant in and dirt out.

Steel—Strong and wear resistant. However, these bearings are best for dry environments since moisture will cause them to rust.

Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.

Sealed—The best choice for dirty environments. In addition to a band, these bearings also have a rubber seal to block dust from creeping in and wearing down the rollers. However, they retain the most heat since air can’t flow through.

	Dynamic Thrust Load Cap., lb.	Max. Rotation Speed, rpm	Temp. Range, ° F		Each
Steel







	Open

	1 1/4"	2.198"	0.625"	12,000	10	0 to 150	2291N101	000000


	1 1/4"	2.635"	0.7658"	18,300	10	0 to 150	2291N103	00000
	1 3/8"	2.323"	0.656"	14,500	10	0 to 150	2291N104	00000
	1 1/2"	2.604"	0.765"	20,300	10	0 to 150	2291N106	00000
	1 5/8"	2.869"	0.8438"	20,500	10	0 to 150	2291N108	00000
	1 13/16"	3.276"	0.9375"	28,400	10	0 to 150	2291N111	00000
	2"	2.948"	0.625"	13,300	10	0 to 150	2291N115	000000
	2 1/16"	3.682"	1.062"	37,500	10	0 to 150	2291N116	000000




			Sealed

			1 1/4"	2.29"	0.677"	12,000	10	0 to 150	2291N102	00000


			1 3/8"	2.398"	0.656"	14,500	10	0 to 150	2291N105	00000
			1 1/2"	2.705"	0.815"	20,300	10	0 to 150	2291N107	00000
			1 5/8"	2.98"	0.8438"	20,500	10	0 to 150	2291N109	00000
			1 13/16"	3.455"	0.99"	28,400	10	0 to 150	2291N112	00000
			2 1/16"	3.823"	1.121"	37,500	10	0 to 150	2291N117	000000

Flanged Shaft-Mount Track Rollers

Shaft-mount track rollers have more mounting flexibility than threaded track rollers. Because they’re flanged, they can handle both radial and thrust (top and side) loads. The flange also provides guidance and helps rollers stay on track. All are permanently lubricated and have end seals to retain lubricant and protect rolling elements from dirt and contamination.

	Roller		Shoulder		Flange					Load Capacity
	Dia.	Wd.	Dia.	Lg.	OD	Thick.	For Shaft Dia.	Overall Wd.	Max. Rotation Speed, rpm	Static Radial, lb.	Dynamic Radial	Static Thrust, lb.	Max. Temp., ° F	Bearing Type		Each
Steel Flat Rollers With Seal



		1"	5/8"	5/8"	1/32"	1 3/8"	1/4"	5/16"	21/32"	20,000	420	Not Rated	110	225	Tapered Roller Bearing	6321K74	0000000


		1 1/4"	3/4"	5/8"	1/32"	1 9/16"	1/4"	3/8"	13/16"	19,000	660	Not Rated	170	225	Tapered Roller Bearing	6321K75	000000
		1 3/8"	3/4"	5/8"	1/32"	1 11/16"	1/4"	3/8"	13/16"	19,000	660	Not Rated	170	225	Tapered Roller Bearing	6321K76	000000
		1 1/2"	7/8"	7/8"	1/32"	2 3/16"	7/32"	7/16"	15/16"	14,000	1,100	Not Rated	280	225	Tapered Roller Bearing	6321K77	000000
		1 3/4"	1"	7/8"	1/32"	2 7/16"	1/4"	1/2"	1 1/16"	14,000	1,100	Not Rated	280	225	Tapered Roller Bearing	6321K78	000000
		2"	1 1/4"	1"	1/32"	2 11/16"	5/16"	5/8"	1 5/16"	11,000	2,200	Not Rated	560	225	Tapered Roller Bearing	6321K79	000000
		2 1/4"	1 1/4"	1"	1/32"	2 15/16"	5/16"	5/8"	1 5/16"	11,000	2,200	Not Rated	560	225	Tapered Roller Bearing	6321K81	000000
		2 1/2"	1 1/2"	1 1/4"	1/32"	3 3/16"	1/2"	3/4"	1 9/16"	1,100	7,600	Not Rated	4,500	225	Tapered Roller Bearing	6321K26	000000
		3"	1 3/4"	1 3/4"	1/32"	3 15/16"	19/32"	1"	1 13/16"	1,100	20,000	Not Rated	12,000	225	Tapered Roller Bearing	6321K41	000000
		3 1/2"	2"	2"	1/32"	4 7/16"	19/32"	1 1/8"	2 1/16"	2,100	27,200	Not Rated	13,100	225	Tapered Roller Bearing	6321K82	000000
		4"	2 1/4"	2"	1/32"	4 15/16"	19/32"	1 1/4"	2 5/16"	2,100	27,200	Not Rated	13,100	225	Tapered Roller Bearing	6321K83	000000

Thrust-Load-Rated Shaft-Mount Track Rollers

These rollers are rated to handle radial and thrust (top and side) loads simultaneously. Also known as yoke-style cam followers, they have more mounting flexibility than threaded track rollers. They're typically mounted onto a shaft or clevis rod end. All rollers are permanently lubricated and have end seals to retain lubricant and protect rolling elements from dirt and contamination.

	Roller					Load Capacity, lb.
	Dia.	Wd.	For Shaft Dia.	Overall Wd.	Max. Rotation Speed, rpm	Static Radial	Dynamic Radial	Static Thrust	Max. Temp., ° F	Bearing Type	ID	ID Tolerance		Each
Black-Oxide Steel Flat Rollers With Seal



		3 1/2"	2"	1 1/8"	2 1/16"	2,100	27,200	18,600	15,400	250	Tapered Roller Bearing	1.125"	—	6321K34	0000000


		4"	2 1/4"	1 1/4"	2 5/16"	2,100	27,200	18,600	15,400	250	Tapered Roller Bearing	1.25"	—	6321K35	000000


		Steel Flat Rollers With Seal



				2 1/2"	1 1/2"	3/4"	1 9/16"	1,100	7,600	4,500	4,500	225	Tapered Roller Bearing	0.75"	—	6321K22	000000


				3"	1 3/4"	1"	1 13/16"	1,100	20,000	6,000	12,000	225	Tapered Roller Bearing	1"	0.999" to 1.001"	6321K31	000000

Shaft-Mount V-Groove Track Rollers

Also known as yoke-style cam followers, these rollers have more mounting flexibility than threaded track rollers. They're typically mounted onto a shaft or clevis rod end. Rollers are for use with Angle Rails for V-Groove Track Rollers. They handle radial and thrust (top and side) loads and work well in dirty environments because debris falls off the angled rail. All rollers are permanently lubricated.

With Seal—Sealed rollers block out dust and other contaminants better than shielded rollers, but they hold more heat. Their seals also help retain lubricant.

	Roller				Groove			Load Capacity, lb.
	Dia.	Wd.	For Shaft Dia.	Overall Wd.	Wd.	Dp.	Max. Rotation Speed, rpm	Static Radial	Dynamic Radial	Static Thrust	Max. Temp., ° F	Bearing Type		Each
Steel V-Groove Rollers With Seal



		2 1/2"	7/8"	7/16"	15/16"	3/4"	3/8"	Not Rated	780	1,800	480	225	Tapered Roller Bearing	6321K58	0000000


		3"	1 1/4"	5/8"	1 5/16"	15/16"	1/2"	Not Rated	1,810	3,400	1,100	225	Tapered Roller Bearing	6321K59	000000
		3 1/2"	1 1/2"	3/4"	1 9/16"	1 1/4"	5/8"	Not Rated	1,810	4,000	1,100	225	Tapered Roller Bearing	6321K61	000000
		3 3/4"	1 1/2"	3/4"	1 9/16"	1 1/4"	5/8"	1,100	7,600	4,500	4,500	225	Tapered Roller Bearing	6321K38	000000
		4 1/2"	1 3/4"	1"	1 13/16"	1 1/2"	3/4"	1,100	20,000	6,000	12,000	225	Tapered Roller Bearing	6321K39	000000
		5"	2"	1 1/8"	2 1/16"	1 1/2"	3/4"	Not Rated	27,200	17,000	13,000	225	Tapered Roller Bearing	6321K62	000000
		5 1/2"	2 1/4"	1 1/4"	2 5/16"	1 1/2"	3/4"	Not Rated	27,200	17,000	13,000	225	Tapered Roller Bearing	6321K63	000000

Double-Flanged Track Rollers

A dual-flange design provides guidance on both sides and helps these rollers stay on track. They handle both radial and thrust (top and side) loads. All rollers are permanently lubricated and have end seals to retain lubricant and protect rolling elements from dirt and contamination.

	Roller		Stud		Thread		Shoulder		Flange		Groove			Load Capacity
	Dia.	Wd.	Dia.	Lg.	Size	Lg.	Dia.	Lg.	OD	Thick.	Wd.	Dp.	Max. Rotation Speed, rpm	Static Radial, lb.	Dynamic Radial	Static Thrust, lb.	Max. Temp., ° F	Bearing Type	Includes		Each
Steel Flat Rollers With Seal







				Hex Stud-End Drive

				3"	1 15/16"	1 1/4"	2 1/2"	1 1/4"-12	1 3/4"	1 3/4"	1/16"	3 15/16"	17/32"	7/8"	15/16"	1,100	12,200	Not Rated	12,000	225	Tapered Roller Bearing	Mounting Hardware	6318K4	0000000

Threaded V-Groove Track Rollers

Thread the stud directly into a component or secure with a nut for through-hole mounting. Rollers are for use with Angle Rails for V-Groove Track Rollers. They handle radial and thrust (top and side) loads and work well in dirty environments because debris falls off the angled rail. Also known as cam followers, track rollers support loads while guiding and positioning work. All rollers are permanently lubricated.

Hex Stud-End Drive


Hex Stud End Drive

With Seal—Rollers with a seal block out dust and other contaminants better than shielded rollers, but they hold more heat. Their seal also helps retain lubricant.

	Roller		Stud		Thread		Shoulder		Groove			Load Capacity, lb.
	Dia.	Wd.	Dia.	Lg.	Size	Lg.	Dia.	Lg.	Wd.	Dp.	Max. Rotation Speed	Static Radial	Dynamic Radial	Static Thrust	Max. Temp., ° F	Bearing Type	Includes		Each
Steel V-Groove Rollers With Seal



		3 1/2"	1 11/16"	3/4"	2"	3/4"-16	1 1/8"	1 1/4"	1/8"	1 1/4"	5/8"	Not Rated	7,200	3,700	3,150	225	Tapered Roller Bearing	Mounting Hardware	6318K78	0000000


		4 1/2"	1 15/16"	1 1/4"	2 1/2"	1 1/4"-12	1 3/4"	1 3/4"	1/16"	1 1/2"	3/4"	Not Rated	20,000	6,000	12,000	225	Tapered Roller Bearing	Mounting Hardware	6318K79	000000

Flanged Threaded Track Rollers

Thread the stud directly into a component or secure with a nut for through-hole mounting. The flange provides guidance and helps the roller stay on track. All rollers are permanently lubricated and have end seals to retain lubricant and protect rolling elements from dirt and contamination.

	Roller		Stud		Thread		Shoulder		Flange			Load Capacity, lb.
	Dia.	Wd.	Dia.	Lg.	Size	Lg.	Dia.	Lg.	OD	Thick.	Max. Rotation Speed, rpm	Static Radial	Static Thrust	Max. Temp., ° F	Includes		Each
Steel Flat Rollers With Seal







				Tapered Roller Bearing

				3"	1 15/16"	1 1/4"	2 1/2"	1 1/4"-12	1 3/4"	1 3/4"	1/16"	3 15/16"	19/32"	1,100	9,800	12,000	225	Mounting Hardware	6318K56	0000000


				3 1/2"	1 15/16"	1 1/4"	2 3/4"	1 1/4"-12	1 3/4"	1 3/4"	1/16"	4 7/16"	19/32"	1,100	9,800	12,000	225	Mounting Hardware	6318K57	000000

Thrust-Load-Rated Threaded Track Rollers

These rollers are rated to handle radial and thrust (top and side) loads simultaneously. 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 are permanently lubricated and have end seals to retain lubricant and protect rolling elements from dirt and contamination.

	Roller		Stud		Thread		Shoulder			Load Capacity, lb.
	Dia.	Wd.	Dia.	Lg.	Size	Lg.	Dia.	Lg.	Max. Rotation Speed, rpm	Static Radial	Dynamic Radial	Static Thrust	Max. Temp., ° F	Bearing Type	Includes		Each
Steel Flat Rollers With Seal







				Hex Stud-End Drive

				3"	1 15/16"	1 1/4"	2 1/2"	1 1/4"-12	1 3/4"	1 3/4"	1/16"	1,100	12,000	6,000	12,000	225	Tapered Roller Bearing	Mounting Hardware	6318K75	0000000


				3 1/2"	1 15/16"	1 1/4"	2 3/4"	1 1/4"-12	1 3/4"	1 3/4"	1/16"	1,100	12,000	6,000	12,000	225	Tapered Roller Bearing	Mounting Hardware	6318K76	000000
				4"	1 15/16"	1 1/4"	2 3/4"	1 1/4"-12	1 3/4"	1 3/4"	1/16"	1,100	12,000	6,000	12,000	225	Tapered Roller Bearing	Mounting Hardware	6318K77	000000