300mm ID 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.

Turntable Bearings with Gear Teeth—Bearings with gear teeth can be driven by a spur gear. For components to mesh correctly, they must have the same pressure angle and module.

	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	Gear Module	Pressure Angle	Material	Type	Material	Plain Bearing Type	Mounting Fasteners Included		Each
For Combined Radial, Thrust, and Moment Loads







				Turntable Bearings

				20,200	33,700	6,050	10,100	3,650	450	300	42	—	—	Anodized Aluminum	Plain	PTFE	Sleeve	No	8700K44	000000000




						Turntable Bearings with Gear Teeth

						20,200	33,700	6,050	10,100	3,650	462	300	44	3	20°	Anodized Aluminum	Plain	PTFE	Sleeve	No	8700K118	00000000

Low-Profile Maintenance-Free Turntable Bearings

At 16 mm tall, these bearings are about the height of your typical plastic water bottle cap, so they won’t bulk up your builds. They handle radial, thrust, and moment loads. Often used to oscillate heavy equipment, find them rotating hoists or spinning components on robotic arms. The internal sleeve moves smoothly and will never require lubrication. For easy alignment and mounting, these bearings have holes on both the inner and outer ring. They’re also known as slewing-ring bearings.

Note: Listed capacities only apply when bearings are mounted parallel to the ground. Otherwise, they reduce when bearings are tilted.

	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



		2,650	10,750	780	2,200	880	360	300	16	Anodized Aluminum	Plain	PTFE	Sleeve	No	7738N16	000000000

Static-Control Maintenance-Free Turntable Bearings

Image of Product. Front orientation. Turntable Bearings. Maintenance-Free, Static Control.

Safe enough to rotate equipment in microchip and semiconductor manufacturing, these bearings prevent harmful static buildup. They’re made from stainless steel and have specially formulated PTFE sleeves that work together to drain static. Make sure your set up provides a path to the ground.

Also known as slewing-ring bearings, these bearings are great for turning heavy equipment in a slow and controlled way. Their sleeves are also slippery, so they move smoothly and don't require lubrication. For alignment and mounting, they have holes on both the inner and outer ring.

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	Performance		Each
For Combined Radial, Thrust, and Moment Loads



		20,200	33,700	6,050	10,100	3,650	450	300	42	Stainless Steel	Plain	PTFE	Sleeve	No	Antistatic	7706N106	000000000