30.02mm ID Bearings | McMaster-Carr

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.

Shaft Liners—Shaft liners allow you to use the bearing on unhardened and unground shafts.

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



		30	40	20	5,100	8,100	14,000	Required	4	0 to 245	Lubrication Groove, Lubrication Hole	0000000	000000	25	0000000	000000

Oil-Embedded Mounted Sleeve Bearings

Reduce upkeep with sleeve bearings that lubricate themselves. Made from porous, oil-saturated bronze, they release a thin film of lubrication upon startup to keep shafts spinning. With no moving parts, they withstand dusty, dirty environments better than ball bearings. However, with more friction generated, they're less effective at high speeds. The sturdy housing bolts down to support shafts as they turn.

Aluminum Housing—One-third the weight of cast iron but not as strong. Aluminum also resists corrosion.

Misalignment Capability—Bearings compensate for as much shaft misalignment as the degree listed. This extends the life of the bearing and protects against wear if shafts are slightly askew.

			Overall, mm
	For Shaft Dia., mm	Ctr. Ht., mm	Lg.	Wd.	Dynamic Radial Load Cap. @ Speed	Misalignment Capability		Each
840 Bearing Bronze Bearing with Aluminum Housing



		30	32	127	24	2,200 lb. @ 30 rpm	5°	0000000	000000