4" Bearings | McMaster-Carr

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Combined Radial, Thrust, and Moment

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Dynamic Radial Load Capacity

Less than 10,000 lb.

10,000 lb. to 19,999 lb.

20,000 lb. to 29,999 lb.

40,000 lb. or greater

Dynamic Thrust Load Capacity

Less than 10,000 lb.

10,000 lb. to 19,999 lb.

20,000 lb. to 99,999 lb.

Mounted Bearing Type

Base Mount

Four-Bolt Flange Mount

Static Radial Load Capacity

Less than 10,000 lb.

10,000 lb. to 99,999 lb.

100,000 lb. to 199,999 lb.

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Plain Bearing Type

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Static Thrust Load Capacity

Less than 10,000 lb.

100,000 lb. to 199,999 lb.

Housing Material

Roller Bearing Type

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DFARS Specialty Metals

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8 Products

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., lb.		Thrust Load Cap., lb.
	For Shaft Dia.	For Housing ID	Wd.	Bearing Trade No.	Dynamic	Static	Dynamic	Static	Max. Rotation Speed, rpm	Lubrication	Temp. Range, ° F		Each
For Combined Radial and Thrust Load—Open with Steel Ring



		4"	6 3/16"	1.031"	52400/52618	13,000	77,000	10,600	107,000	1,100	Required	-60 to 200	00000000	0000000

Four-Point Angular Contact Ball Bearings

Support complex movement in multiple directions with a single compact bearing. The balls distribute weight at four points, so these bearings handle radial, thrust, and moment loads all at once. For example, you’ll often find them in robot arms, which rotate, extend, and twist while supporting an object’s weight. Thinner than two standard angular contact ball bearings paired together, these bearings squeeze into tight spaces. They’re commonly paired with large hollow shafts to run electrical wire and other lines.

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

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

ABEC Rating—Bearings with an ABEC rating meet industry tolerance standards established by the Annular Bearing Engineers Committee (ABEC). They're rated on a scale from 1 to 9. The higher the rating, the tighter the tolerance. Bearings rated ABEC 1 or 3 are precise enough for most applications. If your application consistently runs at high speeds or requires high accuracy, consider bearings rated ABEC 5 or higher, since they generate less friction and heat.

					Dynamic Load Cap.					Temp. Range, ° F
	For Shaft Dia.	For Housing ID	Wd.	ABEC Rating	Radial, lb.	Thrust, lb.	Moment, ft·lbf	Max. Rotation Speed, rpm	Contact Angle	Min.	Max.	Inner Ring Type		Each
Open







				Steel

				4"	4 1/2"	1/4"	1F	750	1,200	100	600	30°	-60	250	Standard	0000000	0000000


				4"	4 5/8"	5/16"	1F	1,050	1,700	140	600	30°	-60	250	Standard	0000000	000000

Oil-Embedded Sleeve Bearings

Install and forget these self-lubricating bearings. All are made from porous metal and saturated with oil to reduce maintenance and downtime. A good all-around choice, they are used in everything from palm-sized fans in electronics to tire-sized pulleys. Although these bearings will work in most conditions, oil may drip away if temperatures get too high. Consider a graphite-lubricated bearing for higher temperatures or places where you can’t afford the mess. All are fabricated, lubricated, and inspected in the U.S.

With no moving parts, sleeve bearings are the simplest way to support the load of a rotating shaft while reducing friction. Also known as plain bearings.

841 Bearing Bronze—A classic choice for a starter pick. Also known as SAE 841 bearings.

Mineral Oil Base—Mineral oil consistently lubricates at most temperatures but doesn’t last as long as synthetic oil.

	For Housing ID	Lg.	Dynamic Radial Load Cap. @ Speed	Base Oil	Temp. Range, ° F		Each
841 Bearing Bronze



	4"	4 1/2"	4"	25,450 lb. @ 30 rpm	Mineral Oil	10 to 220	00000000	0000000

High-Load Tapered-Roller Bearings


Assembled View	Exploded View

Double rows of tapered bearings support large shafts with heavy loads. They also handle thrust loads in either direction as well as radial loads. All come assembled and ready to use.

						Radial Load Cap., lb.		Thrust Load Cap., lb.
	For Shaft Dia.	For Housing ID	Wd.	Bearing Trade No.	Taper Direction	Dynamic	Static	Dynamic	Static	Thrust Clearance	For Thrust Load Type	Max. Rotation Speed, rpm	Lubrication	Temp. Range, ° F	Includes		Each
For Combined Radial and Thrust Load—Open with Steel Ring



		4"	7 1/2"	4"	861/854D	Out	179,000	142,000	59,000	138,000	0.012"	Two Direction	3,800	Required	-65 to 250	One Spacer	0000000	000000000

Mounted Tapered-Roller Bearings with Four-Bolt Flange

Support heavier loads than mounted ball bearings, but at lower speeds. These bearings also withstand thrust loads, which are forces acting parallel to the shaft. The four-bolt flange supports shafts with a stronger connection to the mounting surface than two-bolt alternatives.

Lubricate your bearings regularly to keep them in tip-top shape. These bearings come packed with grease and sealed to block out dust and contaminants.

Powder-Coated Cast Iron Housing—A rugged iron base coated in thick powder that protects against water, mild detergents, and oil. However, if the coating is scratched or chipped, the underlying iron may rust.

Set Screw—Turn the screw to lock your shaft in place. A simple, reliable choice, set screws grip tightly, but they can mar shaft surfaces.

		Overall			Dynamic Load Cap., lb.
	For Shaft Dia.	Lg.	Wd.	Flange Thk.	Radial	Thrust	Max. Rotation Speed, rpm	Bearing Material	Bearing Seal Type		Each
Powder-Coated Cast Iron Housing







				Set Screw

				4"	10 1/4"	6 1/2"	2 1/8"	26,900	6,900	1,500	Steel	Sealed	0000000	000000000

Oil-Embedded Thrust Bearings

Our simplest-to-use thrust bearings, with no moving parts and no need to lubricate. Their porous surface releases oil over time, so you can install and forget them. While they run in most conditions, oil may drip away if temperatures climb too high. For extremely hot environments, consider graphite-lubricated bearings. All are fabricated, lubricated, and inspected in the U.S.

841 Bearing Bronze—A balance of strength and speed makes these bearings a good choice for most applications. Also known as SAE 841 bearing bronze.

Synthetic Oil Base—A high-quality lubricant makes all the difference. Synthetic oil is less sensitive to temperature changes than mineral oil, so it won't get runny and leak away if the bearing heats up.

	OD	Thk.	Dynamic Thrust Load Cap. @ Speed	Base Oil	Temp. Range, ° F		Each
841 Bearing Bronze



	4"	5 1/2"	1/8"	12,500 lb. @ 30 rpm	Synthetic Oil	-35 to 300	00000000	000000

Mounted Tapered-Roller Bearings

Support heavier loads than mounted ball or needle-roller bearings, but at lower speeds. These bearings also withstand thrust loads, which are forces acting parallel to the shaft. The sturdy housing bolts down to support shafts as they turn.

Lubricate your bearings regularly to keep them in tip-top shape. These bearings come packed with grease and sealed to block out dust and contaminants.

Set Screw—Turn the screw to lock your shaft in place. A simple, reliable choice, set screws grip tightly, but they can mar shaft surfaces.

			Overall		Dynamic Load Cap., lb.
	For Shaft Dia.	Ctr. Ht.	Lg.	Wd.	Radial	Thrust	Max. Rotation Speed, rpm	Bearing Material	Bearing Seal Type		Each
Powder-Coated Cast Iron Housing







				Set Screw

				4"	4 1/4"	15 1/4"	6 1/4"	26,900	6,900	1,500	Steel	Sealed	0000000	000000000