20.03mm ID Bearings | McMaster-Carr

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About Plain Bearings

Unlike other sleeve bearings, these do not need to be fully inserted into a housing. Their unique shape creates a permanent, secure hold in thin panels. Bearings swivel to accommodate up to 5° of shaft misalignment. On startup, friction causes the bronze to release a thin layer of oil on the bearing’s surface. Not for use with plastic panels.

Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.

For technical drawings and 3-D models, click on a part number.

Metric 840 Bronze Bearings
Lg.	Spline OD	For Min. Sheet Metal Thick.	Dynamic Radial Load Capacity	Misalignment Capability	Lubrication	Lubricant	Temperature Range, °F		Each
For 20mm Shaft Dia.
22.5mm	33mm	2.3mm	1,350 lbs. @ 60 rpm	5°	Lubricated	SAE 45 Oil	-20° to 200°	0000000	000000

Dry-Running Mounted Sleeve Bearings

With Acetal Bearings

Made from slippery materials, these bearings reduce friction without the oily mess. They are self-aligning to compensate for shaft misalignment.

Acetal bearings do not warp or swell when exposed to water, so they’re often used in washdown environments.

Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.

For technical drawings and 3-D models, click on a part number.

		Overall				Mounting
For Shaft Dia.	Center Ht.	Ht.	Lg.	Wd.	Bearing Wd.	Hole Dia.	Hole Ctr.-to-Ctr.	Dynamic Radial Load Cap.	Temp. Range, °F	Alignment Style		Each
Acetal Plastic Bearings with Aluminum Housing
20mm	19mm	39.7mm	82.6mm	21.5mm	21.5mm	8.7mm	63.5mm	160 lbs. @ 60 rpm	-40° to 180°	Self Aligning	0000000	000000

Oil-Embedded Mounted Sleeve Bearings

Startup friction causes these porous bronze bearings to release a thin layer of oil on the bearing’s surface. They are self-aligning to compensate for shaft misalignment.

Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.

For technical drawings and 3-D models, click on a part number.

		Overall				Mounting
For Shaft Dia.	Center Ht.	Ht.	Lg.	Wd.	Bearing Wd.	Hole Dia.	Hole Ctr.-to-Ctr.	Dynamic Radial Load Cap.	Temp. Range, °F	Alignment Style	Lubrication		Each
840 Bearing Bronze Bearings with Aluminum Housing
20mm	19mm	39.5mm	82.5mm	22.5mm	21.5mm	9mm	63.5mm	1,400 lbs. @ 60 rpm	-20° to 200°	Self Aligning	Lubricated	0000000	000000

Dry-Running Mounted Sleeve Bearings with Two-Bolt Flange

With Acetal Plastic Bearing

Embedded lubricant particles increase the load capacity of these bearings while also making them slippery. Bearings are self-aligning to compensate for shaft misalignment.

Acetal sleeve bearings won’t warp or swell when exposed to water, making them good for use in washdown environments.

Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.

For technical drawings and 3-D models, click on a part number.

	Overall					Mounting
For Shaft Dia.	Ht.	Lg.	Wd.	Bearing Wd.	Flange Thick.	Hole Dia.	Hole Ctr.-to-Ctr.	Dynamic Radial Load Cap.	Temp. Range, °F	Alignment Style		Each
Acetal Plastic Bearings with Aluminum Housing
20mm	41mm	82.5mm	21.5mm	21.5mm	6.4mm	10.5mm	63.5mm	160 lbs. @ 60 rpm	-40° to 180°	Self Aligning	00000000	000000

High-Speed Light Duty Dry-Running Mounted
Sleeve Bearings with Two-Bolt Flange

Made of acetal with a PTFE filling, these light duty bearings handle speeds twice as fast as standard acetal bearings can. The material is self-lubricating for less wear and longer life in your system. These bearings swivel to compensate for small amounts of shaft misalignment.

For technical drawings and 3-D models, click on a part number.

	Overall					Mounting
For Shaft Diameter	Height	Length	Width	Bearing Width	Flange Thickness	Hole Diameter	Hole Center-to-Center	Dynamic Radial Load Capacity	Temperature Range, °F	Alignment Style		Each
PTFE-Filled Acetal Plastic Bearings with Black-Oxide Steel Housing
20mm	47.1mm	59.8mm	22.4mm	20.1mm	2.3mm	5.6mm	45.2mm	390 lbs. @ 60 rpm	-40° to 180°	Self Aligning	0000000	000000

High-Speed Dry-Running Mounted Sleeve Bearings with Two-Bolt Flange

Handling speeds twice as fast as standard mounted sleeve bearings while limiting wear on your system, these bearings are made of PTFE-filled acetal. They don’t require any additional lubrication. To compensate for minor shaft misalignment, they’re self-aligning. Mount them using their two-bolt flange.

Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.

For technical drawings and 3-D models, click on a part number.

	Overall					Mounting
For Shaft Diameter	Height	Length	Width	Bearing Width	Flange Thickness	Hole Diameter	Hole Center-to-Center	Dynamic Radial Load Capacity	Temperature Range, °F	Alignment Style		Each
PTFE Plastic-Filled Acetal Bearings with Aluminum Housing
20mm	41.3mm	82.6mm	21.5mm	21.5mm	6.4mm	10.3mm	63.5mm	370 lbs. @ 60 rpm	-40° to 180°	Self Aligning	00000000	000000