50mm Spacers | McMaster-Carr

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33 Products

About Plain Bearings

Use where high loads and speeds are not required.

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 Nylon Bearings
For Housing ID	Lg.	Dynamic Radial Load Capacity	Color	Temperature Range, °F		Each
For 40mm Shaft Dia.
50mm	25mm	310 lbs. @ 30 rpm	Off-White	-10° to 220°	00000000	000000
50mm	50mm	620 lbs. @ 30 rpm	Off-White	-10° to 220°	00000000	00000

Food Industry Dry-Running Sleeve Bearings

Made of FDA-listed materials or FDA compliant, these bearings are for use in food applications. They also withstand caustic and washdown environments.

Acetal bearings are FDA compliant for direct contact with food. They’re also bright blue, making them easy to spot if they fall into your line.

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 Acetal Plastic Bearings
For Housing ID	Lg.	Dynamic Radial Load Capacity	Color	Temperature Range, °F	Specifications Met		Each
For 45mm Shaft Dia.
50mm	20mm	870 lbs. @ 30 rpm	Blue	-50° to 190°	FDA Compliant 21 CFR 177.1550	00000000	00000
50mm	40mm	1,750 lbs. @ 30 rpm	Blue	-50° to 190°	FDA Compliant 21 CFR 177.1550	00000000	0000

Oil-Embedded Sleeve 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 40 mm Shaft Dia.
For Housing ID, mm	Lg., mm	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
50	25	3,100 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	000000
50	30	3,700 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
50	35	4,300 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
50	40	4,950 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
50	50	6,200 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
50	60	7,400 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000

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 40mm Shaft Dia.
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
50mm	30mm	5,250 lbs. @ 30 rpm	Lubricated	SAE 90 Oil	-15° to 300°	00000000	000000
50mm	40mm	7,000 lbs. @ 30 rpm	Lubricated	SAE 90 Oil	-15° to 300°	00000000	00000
50mm	60mm	10,500 lbs. @ 30 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 40 mm Shaft Dia.
50	30	5,250 lbs. @ 30 rpm	Lubricated	SAE 20 Oil with PTFE	-60° to 300°	00000000	000000
50	40	7,000 lbs. @ 30 rpm	Lubricated	SAE 20 Oil with PTFE	-60° to 300°	00000000	00000
50	60	10,500 lbs. @ 30 rpm	Lubricated	SAE 20 Oil with PTFE	-60° to 300°	00000000	00000

Multipurpose Sleeve Bearings

These 932 bearing bronze bearings are strong, wear resistant, and excellent at handling shock loads. They’re sometimes called 660 leaded bronze 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 932 Bearing Bronze Bearings
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Temperature Range, °F		Each
For 40mm Shaft Dia.
50mm	50mm	12,400 lbs. @ 30 rpm	Required	-350° to 450°	00000000	000000
50mm	65mm	16,100 lbs. @ 30 rpm	Required	-350° to 450°	00000000	00000
50mm	75mm	18,600 lbs. @ 30 rpm	Required	-350° to 450°	00000000	00000
50mm	100mm	24,800 lbs. @ 30 rpm	Required	-350° to 450°	00000000	00000
For 45mm Shaft Dia.
50mm	40mm	11,150 lbs. @ 30 rpm	Required	-350° to 450°	00000000	00000
50mm	50mm	13,950 lbs. @ 30 rpm	Required	-350° to 450°	00000000	00000
50mm	100mm	27,900 lbs. @ 30 rpm	Required	-350° to 450°	00000000	00000

Multipurpose Sleeve Bearings with Groove

A figure-8-shaped groove provides a flow path for lubricant, distributing it evenly along the bearing’s surface. Bearings are cast bronze, making them strong, wear resistant, and excellent at handling shock loads. 932 bearing bronze is sometimes called 660 leaded bronze.

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 932 Bearing Bronze
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Temperature Range, °F		Each
For 40mm Shaft Dia.
50mm	50mm	10,850 lbs. @ 30 rpm	Required	-350° to 450°	00000000	000000
50mm	65mm	14,100 lbs. @ 30 rpm	Required	-350° to 450°	00000000	00000
50mm	75mm	16,250 lbs. @ 30 rpm	Required	-350° to 450°	00000000	00000
50mm	100mm	21,700 lbs. @ 30 rpm	Required	-350° to 450°	00000000	00000
For 45mm Shaft Dia.
50mm	75mm	18,300 lbs. @ 30 rpm	Required	-350° to 450°	00000000	00000

Light Duty Dry-Running Flanged Sleeve Bearings

Use where high loads and speeds are not required.

Thermoplastic-blend bearings have low moisture absorption and create very low friction in applications with light loads, and frequent starts and stops.

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.

Thermoplastic-Blend Bearings
For Housing ID	Lg.	Flange OD	Flange Thick.	Dynamic Radial Load Capacity	Dynamic Thrust Load Capacity	Color	Temperature Range, °F		Each
For 45mm Shaft Dia.
50mm	20mm	58mm	2mm	970 lbs. @ 30 rpm	880 lbs. @ 30 rpm	Yellow	-50° to 190°	00000000	00000

Food Industry Dry-Running Flanged Sleeve Bearings

Made of FDA listed materials for use in food applications, these bearings also withstand caustic and washdown environments.

Acetal bearings are FDA compliant for direct contact with food. They’re commonly used on machines in food plants and manufacturing plants for packaging and healthcare equipment. These bearings are bright blue, so they’re easy to spot in your line in case of breakage.

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.

Acetal Plastic Bearings
For Housing ID	Lg.	Flange OD	Flange Thick.	Dynamic Radial Load Capacity	Dynamic Thrust Load Capacity	Color	Temperature Range, °F	Specifications Met		Each
For 45mm Shaft Dia.
50mm	50mm	58mm	2mm	500 lbs. @ 30 rpm	235 lbs. @ 30 rpm	Blue	-50° to 190°	FDA Compliant 21 CFR 177.1520, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 178.3297	000000000	000000

Multipurpose Dry-Running Flanged Sleeve Bearings

Reinforced with polyester fabric, these plastic bearings have load and speed capabilities comparable to metal bearings. Bearings resist corrosion in outdoor and saltwater 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.

Metric Polyester Fabric-Reinforced PTFE Plastic Bearings
For Housing ID	Lg.	Flange OD	Flange Thick.	Dynamic Radial Load Capacity	Dynamic Thrust Load Capacity	Color	Temperature Range, °F		Each
For 40mm Shaft Dia.
50mm	30mm	60mm	5mm	3,750 lbs. @ 30 rpm	3,250 lbs. @ 30 rpm	Blue	-40° to 150°	0000000	000000

Multipurpose Flanged Sleeve Bearings

These bronze bearings are strong, wear resistant, and excellent at handling shock loads. They’re sometimes called 660 leaded bronze 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 932 Bearing Bronze Bearings
For Housing ID	Lg.	Flange OD	Flange Thick.	Dynamic Radial Load Capacity	Dynamic Thrust Load Capacity	Lubrication	Temperature Range, °F	PV Max.		Each
For 40mm Shaft Dia.
50mm	30mm	60mm	5mm	7,400 lbs. @ 30 rpm	9,700 lbs. @ 30 rpm	Required	-350° to 450°	75,000	0000000	000000
50mm	40mm	60mm	5mm	9,900 lbs. @ 30 rpm	9,700 lbs. @ 30 rpm	Required	-350° to 450°	__	00000000	00000

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About Plain Bearings

Light Duty Dry-Running Sleeve Bearings

Food Industry Dry-Running Sleeve Bearings

Oil-Embedded Sleeve Bearings

High-Load Oil-Embedded Sleeve Bearings

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

Multipurpose Sleeve Bearings

Multipurpose Sleeve Bearings with Groove

Light Duty Dry-Running Flanged Sleeve Bearings

Food Industry Dry-Running Flanged Sleeve Bearings

Multipurpose Dry-Running Flanged Sleeve Bearings

Multipurpose Flanged Sleeve Bearings