21.04mm OD Bearings | McMaster-Carr

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13 Products

About Plain Bearings

Startup friction causes these bearings to release a thin layer of oil on the bearing’s surface. They are also known as Oilite® bearings.

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 841 Bronze Bearings

For 15 mm Shaft Dia.
For Housing ID, mm	Lg., mm	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
21	15	690 lbs. @ 60 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
21	16	740 lbs. @ 60 rpm	Lubricated	SAE 30 Oil	-35° to 300°	0000000	0000
21	20	930 lbs. @ 60 rpm	Lubricated	SAE 30 Oil	-35° to 300°	0000000	0000
21	25	1,150 lbs. @ 60 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	0000

High-Load Oil-Embedded Sleeve Bearings

Increased iron content makes these bearings stronger and more resistant to shock loads than standard oil-embedded bearings; however they operate at lower speeds. Startup friction causes them to release a thin layer of oil on the bearing’s surface. Color is silver because of the iron. These bearings are also magnetic due to the high iron content.

863 iron-copper bearings are also known as Super Oilite® bearings.

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.

863 Iron-Copper Bearings

For 15mm Shaft Dia.
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
21mm	16mm	1,400 lbs. @ 60 rpm	Lubricated	SAE 90 Oil	-15° to 300°	00000000	00000

High-Load Ultra-Low-Friction Oil-Embedded Sleeve Bearings

With extra iron and filled with oil containing slippery PTFE, these bearings support heavy loads that frequently start and stop along shafts. Startup friction causes a thin layer of oil to release onto the surface. Their high iron content also means they resist failing if their load suddenly and drastically increases, but they won’t run as fast as standard bearings.

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.

863 Iron-Copper
For Housing ID, mm	Length, mm	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
For 15 mm Shaft Dia.
21	16	1,400 lbs. @ 60 rpm	Lubricated	SAE 20 Oil with PTFE	-60° to 300°	00000000	00000

Food Industry Oil-Embedded Sleeve Bearings

The oil in these bearings is suitable for incidental contact with food. Startup friction produces a thin layer of oil on the bearing’s surface.

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.

841 Bronze Bearings

For 15mm Shaft Dia.
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
21mm	16mm	740 lbs. @ 60 rpm	Lubricated	SAE 20 Oil	-75° to 300°	00000000	000000

High-Load Food Industry Oil-Embedded Sleeve Bearings

Embedded with oil that is safe for incidental contact with food, these bearings are suitable for use in high-load applications such as bottling and filling lines in food processing plants. They are also known as Super Oilite® bearings. Startup friction releases the embedded oil onto their surface in a thin layer. Bearings are made of 863 iron-copper, which makes these bearings strong and resistant to shock loads.

Bearings with NSF H1 registered lubrication comply with NSF standards for incidental contact with food.

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

863 Iron-Copper
For Housing ID	Length	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F	Specifications Met		Each
For 15mm Shaft Dia.
21mm	20mm	1,750 lbs. @ 60 rpm	Lubricated	SAE 20 Oil	-75° to 300°	ASTM B439, NSF Registered H1	00000000	000000

Oil-Embedded Flanged Sleeve Bearings

Startup friction causes these bearings to release a thin layer of oil on the bearing’s surface. They’re flanged, so they handle loads both parallel and perpendicular to the shaft. They’re also known as Oilite® bearings.

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 841 Bronze Bearings
For Housing ID	Lg.	Flange OD	Flange Thick.	Dynamic Radial Load Capacity	Dynamic Thrust Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
For 15mm Shaft Dia.
21mm	16mm	27mm	3mm	740 lbs. @ 60 rpm	1,200 lbs. @ 60 rpm	Lubricated	SAE 30 Oil	-35° to 300°	0000000	00000
21mm	20mm	27mm	3mm	930 lbs. @ 60 rpm	1,200 lbs. @ 60 rpm	Lubricated	SAE 30 Oil	-35° to 300°	0000000	0000

High-Load Oil-Embedded Flanged Sleeve Bearings

Increased iron content makes these bearings stronger and more resistant to shock loads than standard oil-embedded bearings; however they operate at lower speeds. Startup friction causes these bearings to release a thin layer of oil onto their surface. Color is silver because of the iron.

863 iron-copper bearings are also known as Super Oilite® bearings.

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.

863 Iron-Copper Bearings
For Housing ID	Lg.	Flange OD	Flange Thick.	Dynamic Radial Load Capacity	Dynamic Thrust Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
For 15mm Shaft Dia.
21mm	20mm	27mm	3mm	1,750 lbs. @ 60 rpm	1,250 lbs. @ 60 rpm	Lubricated	ISO 460 Oil	-15° to 300°	00000000	00000

High-Load Ultra-Low-Friction Oil-Embedded Flanged Sleeve Bearings

With oil for reduced friction and iron for added strength, these bearings handle frequent stops and starts in high-load applications. They withstand greater weight and shock loads than standard bearings, but operate at lower speeds.

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

863 Iron-Copper Bearings
For Housing ID, mm	Length, mm	Flange OD, mm	Flange Thickness, mm	Dynamic Radial Load Capacity	Dynamic Thrust Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
15 mm Shaft Dia.
21	16	27	3	1,400 lbs. @ 60 rpm	1,250 lbs. @ 60 rpm	Lubricated	ISO 460 Oil	-60° to 300°	00000000	00000
21	20	27	3	1,750 lbs. @ 60 rpm	1,250 lbs. @ 60 rpm	Lubricated	ISO 460 Oil	-60° to 300°	00000000	0000