2 9/16" OD Bearings | McMaster-Carr

Smoother than smooth—the balls inside these bearings roll nearly friction-free. You’ll often find them on rapidly rotating parts, from the whirring chuck on a power drill to the spinning shaft on an electric motor.

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

Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.

Sealed—The best choice for dirty environments. A barrier seals out dust so it won't gunk up or wear down the balls. However, these bearings retain the most heat since air can't flow through.

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

Extended Inner Ring—Connect to mating parts without the need for a spacer. The inner ring juts out farther than the outer ring, so shaft collars and other objects won't touch the bearing's moving parts.

							Temp. Range, ° F
	For Shaft Dia.	For Housing ID	Wd.	ABEC Rating	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Min.	Max.	Inner Ring Type	Bearing Trade No.		Each
Open







				Steel

				1 1/4"	2 9/16"	11/16"	Not Rated	5,350	5,000	-20	250	Standard	1657	2780T29	000000


				Shielded







								Steel

								1 1/4"	2 9/16"	11/16"	Not Rated	5,350	5,000	-20	250	Standard	1657-2Z	2780T49	00000


								Sealed







												Steel

												1 1/4"	2 9/16"	11/16"	Not Rated	5,350	5,000	-20	250	Standard	1657-2RS	2780T69	00000


												1 1/4"	2 9/16"	3/4"	Not Rated	5,350	5,000	-20	250	Extended	7520-2RS	2782T79	00000

Quick-Mount Ball Bearings

Set-Screw

Shaft Mount

Slip onto a shaft and secure with the turn of a screw. You don't need any special tools to mount these bearings.

Set-Screw Shaft Mount—Tighten the screws against the shaft to hold the bearing in place. For high-speed applications, consider clamp-on shaft mounts, which are less likely to slip.

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

Sealed—The best choice for dirty environments. A barrier seals out dust so it won't gunk up or wear down the balls. However, these bearings retain the most heat since air can't flow through.

				Retaining Ring						Temp. Range, ° F
	For Shaft Dia.	For Housing ID	Wd.	OD	Thk.	Bearing Seal Type	ABEC Rating	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Min.	Max.	Bearing Trade No.		Each
Set-Screw Shaft Mount







				Steel

				1 1/16"	2 9/16"	3/4"	2.766"	0.065"	Sealed	Not Rated	5,350	5,000	-20	250	7617-2RS	4768K17	000000


				1 1/8"	2 9/16"	3/4"	2.766"	0.065"	Sealed	Not Rated	5,350	5,000	-20	250	7618-2RS	4768K18	00000
				1 1/4"	2 9/16"	3/4"	2.766"	0.065"	Sealed	Not Rated	5,350	5,000	-20	250	7620-2RS	4768K8	00000

Precision Needle-Roller Bearings


	Bearing

Install these bearings directly onto hardened and ground shafts. They have higher load capacity, speed, and accuracy than standard needle-roller bearings.

Open Bearing—Open bearings dissipate heat more efficiently than sealed bearings.

				Radial Load Cap., lb.
	For Shaft Dia.	For Housing ID	Wd.	Dynamic	Static	Max. Rotation Speed, rpm	Lubrication	For Shaft Surface Smoothness, Ra, μin	Temp. Range, ° F	Features		Each
For Radial Load—Open with Steel Ring



		2"	2 9/16"	1 1/4"	13,300	29,900	6,700	Required	16	0 to 245	Lubrication Groove, Lubrication Hole	7929K201	000000

Ball Bearings with Retaining Ring

Sealed

No need for complicated tools—install these bearings by hand inside a housing. The ring stops the bearing from being jostled out of place when it experiences sudden forces parallel to the shaft (thrust loads).

Sealed—The best choice for dirty environments. A barrier seals out dust so it won't gunk up or wear down the balls. However, these bearings retain the most heat since air can't flow through.

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

				Retaining Ring					Temp. Range, ° F
	For Shaft Dia.	For Housing ID	Wd.	OD	Thk.	ABEC Rating	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Min.	Max.	Inner Ring Type	Bearing Trade No.		Each
Sealed







				Steel

				1 1/4"	2 9/16"	3/4"	2.766"	0.065"	Not Rated	5,350	5,000	-20	250	Extended	7520-2RS	2782T89	000000

Flush-Mount Screw-Clamp Bushings

Insert these bushings into the bore of your sprocket for flush or recessed mounting. They handle shock loads. When you tighten the included clamping screws, the bushing's inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear. They can be mounted on shafts with or without keyways.

	OD	Overall Wd.	Max. Torque, in·lbf	Fastener Tightening Torque, in·lbf	Includes		Each
Steel



	1 7/16"	2 9/16"	1 1/32"	7,600	150	Clamping Screws	2328K16	000000


	1 1/2"	2 9/16"	1 1/32"	7,850	150	Clamping Screws	2328K17	00000