300 mm OD Bearings | McMaster-Carr

With low-friction internal sleeves made of PTFE, these bearings never need lubrication. Also known as slewing-ring bearings, they’re used for slow, controlled rotation. You’ll often see them rotating hoists, robotic arms, and other heavy machinery. They have holes on both the inner and outer ring, so they’re easy to align and mount.

Note: Listed capacities only apply when bearings are mounted parallel to the ground. These bearings can be mounted in other orientations, but their capacities will be reduced.

	Thrust Load Cap., lb.		Radial Load Cap., lb.							Bearing
	Dynamic	Static	Dynamic	Static	Static Moment Load Cap., ft·lbf	OD, mm	ID, mm	Overall Ht., mm	Material	Type	Material	Plain Bearing Type	Mounting Fasteners Included		Each
For Combined Radial, Thrust, and Moment Loads


		6,700	22,450	2,200	7,850	2,800	300	200	38	Anodized Aluminum	Plain	PTFE	Sleeve	No	000000	0000000

Food and Beverage Maintenance-Free Turntable Bearings

Made of stainless steel and plastic, these bearings are FDA compliant for direct contact with food. Their low-friction internal sleeves never need to be lubricated. Often used to turn conveyors or spin mixers, these bearings are designed for slow, controlled rotation. They have holes on both the inner and outer ring, so they’re easy to align and mount. They’re also known as slewing-ring bearings.

Note: Listed capacities only apply when bearings are mounted parallel to the ground. These bearings can be mounted in other orientations, but their capacities will be reduced.

	Thrust Load Cap., lb.		Radial Load Cap., lb.							Bearing
	Dynamic	Static	Dynamic	Static	Static Moment Load Cap., ft·lbf	OD, mm	ID, mm	Overall Ht., mm	Material	Type	Material	Plain Bearing Type	Mounting Fasteners Included	Food Industry Std.		Each
For Combined Radial, Thrust, and Moment Loads


		6,700	22,450	2,240	7,850	2,800	300	200	38	Stainless Steel	Plain	Plastic	Sleeve	No	FDA Compliant 21 CFR 177.1550	0000000	000000000

Bearing Nuts

Carbon Steel

Chamfered Face

Often paired with spring lock washers to strengthen their hold, these bearing nuts—also known as shaft nuts—keep vibration from shifting bearings, bushings, pulleys, and gears on your threaded shaft or spindle. They have slotted sides, so you can tighten and loosen them with a spanner wrench or spanner socket.

Carbon Steel—Carbon steel bearing nuts are strong and resist wear.

Chamfered Face—Chamfered-face bearing nuts weigh less and produce less heat than stepped-face nuts.

ISO 2982— Some chamfered-face bearing nuts meet ISO 2982 (formerly DIN 981), an international standard for bearing locknut dimensions. Their sizes correspond to SKF KM series. Use them with DIN 5406 spring lock washers.

Thread Spacing—When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.

	Thread
	Size	Spacing	OD, mm	Wd., mm	Specs. Met	For Lock Washer Specs. Met		Each
Carbon Steel





				Chamfered Face
				M240 × 4 mm	Extra Fine	300	34	DIN 981, ISO 2982	DIN 5406	0000000	0000000