160 mm Housing ID Bearings

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.

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.

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.

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







				Steel

				75	160	37	3	26,700	4,500	-20	230	Standard	6315-2Z	4481N55	0000000


				90	160	30	3	22,700	4,300	-20	230	Standard	6218-2Z	4481N45	000000


				Sealed







								Steel

								75	160	37	3	26,700	2,800	-30	210	Standard	6315-2RS	4481N95	000000


								90	160	30	3	22,700	2,600	-30	210	Standard	6218-2RS	4481N88	000000

Spherical-Roller Bearings

Two rows of rollers give these bearings higher dynamic radial load capacities 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.

						Combined Load Cap., lbf
	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Bearing Trade No.	Ring Material	Dynamic	Static	Max. Rotation Speed, rpm	Lubrication	Max. Temp., ° F		Each
Open Bearing



		90	160	40	22218	Steel	80,750	88,750	3,200	Required	390	2721T15	0000000

High-Load Crossed-Roller Bearings

The thicker inner and outer raceways on these bearings can handle heavier loads than the thin-profile crossed-roller bearings. 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 Bearing—Open bearings dissipate heat more efficiently than sealed bearings.

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

				Combined Load Cap., lbf
	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Dynamic	Static	Max. Rotation Speed, rpm	Lubrication	Temp. Range, ° F	Features		Each
For Combined Radial, Thrust, and Moment Load—Open with Steel Ring



		110	160	20	11,750	17,400	550	Required	0 to 245	—	4489N15	0000000


		For Combined Radial, Thrust, and Moment Load—Sealed with Steel Ring



				110	160	20	11,750	17,400	440	Lubricated	0 to 245	Lubrication Groove, Two Lubrication Holes	4489N23	000000