48mm OD Bearings | McMaster-Carr

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Bearing Type Bearing Type

	Plain

	Lubrication Lubrication

Lubricated

Not Required

	Shaft Mount Type Shaft Mount Type

Slip Fit

Clamp On

	Color Color

	White
	Gray
	Off-White

	Specifications Met Specifications Met

	Installation Type Installation Type

	Permanent

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52 Products

About Plain Bearings

About Shaft Collars

Shaft collars are useful for holding and positioning components on a shaft. They can also serve as mechanical stops and stroke limiters.

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 38mm Shaft Dia.
48mm	25mm	310 lbs. @ 30 rpm	Off-White	-10° to 220°	00000000	000000
For 42mm Shaft Dia.
48mm	50mm	620 lbs. @ 30 rpm	Off-White	-10° to 220°	00000000	00000

Oil-Embedded Thrust Bearings

Startup friction causes these porous bronze 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 24 mm Shaft Dia.
OD, mm	Thick., mm	Dynamic Thrust Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
48	3	3,500 lbs. @ 60 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
48	4	3,500 lbs. @ 60 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	0000

Ultra-Low-Friction Oil-Embedded Thrust Bearings

For applications with frequent starts and stops, the oil in these bearings contains particles of slippery PTFE that lubricate the bearing during startup.

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 SAE 841 Bronze Bearings

For 24mm Shaft Dia.
OD, mm	Thick., mm	Dynamic Thrust Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
48	3	3,500 lbs. @ 60 rpm	Lubricated	SAE 20 Oil with PTFE	-60° to 300°	0000000	00000
48	4	3,500 lbs. @ 60 rpm	Lubricated	SAE 20 Oil with PTFE	-60° to 300°	0000000	00000

Food Industry Oil-Embedded Thrust Bearings

The oil in these bearings is suitable for incidental contact with food. Startup friction causes them to release 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 24mm Shaft Dia.
OD	Thick.	Dynamic Thrust Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
48mm	3mm	3,500 lbs. @ 60 rpm	Lubricated	SAE 20 Oil	-75° to 300°	00000000	000000
48mm	4mm	3,500 lbs. @ 60 rpm	Lubricated	SAE 20 Oil	-75° to 300°	00000000	00000

High-Load Food Industry Oil-Embedded Thrust Bearings

Made of 863 bearing bronze and embedded with NSF registered H1 oil, these bearings can tackle high-load applications in food plants, such as bottling and filling lines. Startup friction causes these bearings to release a thin layer of oil onto their surface. The oil is safe for incidental contact with food. Also known as Super Oilite® bearings, these bearings have high iron content, so they’re strong and hold up to shock loads.

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

863 Bronze Bearings
OD	Thickness	Dynamic Thrust Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
For 24mm Shaft Dia.
48mm	3mm	2,400 lbs. @ 60 rpm	Lubricated	SAE 20 Oil	-75° to 300°	00000000	000000

Light Duty Dry-Running Thrust Bearings

Use where high loads and speeds are not required.

Thermoplastic bearings are fiber reinforced and lubricant infused for good wear resistance and low friction with light and medium loads.

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
OD	Thick.	Dynamic Thrust Load Capacity	Color	Temperature Range, °F		Each
For 28 mm Shaft Dia.
48mm	1.5mm	220 lbs. @ 30 rpm	Gray	-40° to 260°	0000000	00000

High-Load Dry-Running Thrust Bearings

A steel backing adds strength to these slippery PTFE 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.

Steel-Backed PTFE Plastic Bearings
OD, mm	Thick., mm	Dynamic Thrust Load Capacity	Temperature Range, °F		Each
For 28 mm Shaft Dia.
48	1.5	6,200 lbs. @ 30 rpm	-320° to 530°	0000000	000000

Bearing Retaining Locknuts

Carbon Steel

Stainless Steel

With a nylon insert that grips your threaded shaft or spindle without damaging the threads, these locknuts—sometimes called shaft nuts—keep bearings, bushings, gears, and pulleys in place. They won’t shake loose from vibration. However, their nylon insert also means you shouldn’t use these locknuts in applications with high temperatures. Their sides are slotted, so you can tighten and loosen them with a spanner wrench or spanner socket. To reduce the total size and weight of your assembly, they have chamfered edges.

All meet international standards for bearing locknut dimensions.

Carbon steel locknuts are strong and wear resistant. 303 stainless steel locknuts are nearly as strong as carbon steel but won’t rust in outdoor, washdown, and other corrosive environments.

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

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

Metric

Locknuts
Thread									Spanner Sockets
Size	Pitch, mm	Spacing	OD	Wd., mm	Insert Max. Temp., °F	Specifications Met		Each		Each
Carbon Steel
Chamfered Face
M32	1.5	Extra Fine	48mm	11.5	160°	ISO 2982-2	00000000	000000	00000000	0000000
303 Stainless Steel
Chamfered Face
M32	1.5	Extra Fine	48mm	11.5	160°	ISO 2982-2	00000000	00000	00000000	000000

Washdown Clamping Shaft Collars

Suitable for use in washdown applications, these plastic collars also offer good chemical resistance. They clamp evenly around the shaft to create a strong, mar-free hold. To use, slide onto your shaft and tighten the clamping screw to secure.

Acetal collars have a naturally slippery surface and resist swelling when exposed to moisture.

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

Metric

			Clamping Screw		White Acetal Plastic
For Shaft Dia., mm	OD, mm	Wd., mm	Type	No. Included		Each
28	48	15	Socket Head Screw	1	00000000	000000

Metric Press-Fit Drill Bushings

Also known as jig bushings, these metric drill bushings fit inside fixture plate holes to guide drill bits, counterbores, reamers, and other cutting tools. They improve accuracy so that your drilled holes and cuts are consistent from part to part. Known for their versatility, drill bushings are also used as spacers, shims, and machinery bushings. These bushings are made of hardened, ground steel that holds its shape and resists wear, so they last for many cycles without needing to be replaced.

All bushings have a chamfer on the outside that centers the bushing as you place it into the hole. Press into place with a manual or hydraulic press. They also have internal chamfers, so it's easier to insert bits, pins, and punches into the bushing. Some bushings have internal chamfers on both ends, so no matter which end of the bushing is inserted into your jig, your bits, pins, and other tooling enter easily. Having an internal chamfer on the bottom of your bushing may cause shavings to get caught and bind as you remove the bit, however.

DIN 179 bushings meet dimensional and material standards that make sure they're compatible with other parts and tools. Although DIN 179 is no longer an active standard, it's still a common reference point for designers.

Don't see the size you need? Additional sizes are available.

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

				Tolerance								Each
OD, mm	Lg., mm	Internal Chamfer	For Drill Bit Size	ID, mm	OD, mm	Lg., mm	Drill Bushing Type	Material	Hardness	Specifications Met		1-5	6-11	12-Up
30 mm ID
48	25	One End	30 mm	0.007 to 0.02	0.043 to 0.059	-0.35 to 0.35	PM	Steel	Rockwell C61	__	000000000	000000	000000	000000
48	56	One End	30 mm	0.007 to 0.02	0.043 to 0.059	-0.35 to 0.35	PM	Steel	Rockwell C61	__	000000000	00000	00000	00000
32 mm ID
48	25	Both Ends	32 mm	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	PM	Steel	Rockwell C61	__	000000000	00000	00000	00000
48	25	One End	32 mm	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	000000000	00000	00000	00000
32.5 mm ID
48	25	One End	32.5 mm	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	PM	Steel	Rockwell C61	DIN 179	000000000	00000	00000	00000
34 mm ID
48	25	Both Ends	34 mm	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	PM	Steel	Rockwell C61	__	000000000	00000	00000	00000

Metric Press-Fit Drill Bushings with Head

Shown in Countersunk Hole

Shown in Standard Hole

Even under extreme drilling pressure, these metric bushings won't press through your jig plate. A flanged head on the top of the bushing acts as a stop, preventing it from moving as you push down your drill bit, reamer, or other cutting bit. Drill bushings ensure accurate, consistent cuts and drilled holes from one part to the next. They sometimes also work as spacers, shims, and machinery bushings. Made of hardened, ground steel, these bushings hold their shape and resist wear over time. The flanged head protects your jig plate from damage caused by heavy use.

Although it's no longer an active standard, DIN 172 is still a common reference point for making sure parts are compatible with other parts and tools.

These bushings work in both countersunk and standard drill holes. To install, place the bushing inside the hole in your jig. A chamfered edge on the bottom of the bushing helps center the bushing in the hole. Once centered, press the bushing into the hole with a hydraulic or lever press.

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

		Head		Tolerance								Each
OD, mm	Lg., mm	OD, mm	Thick., mm	ID, mm	OD, mm	Lg., mm	Drill Bushing Type	Material	Hardness	Specifications Met		1-5	6-11	12-Up
30.5 mm ID
48	20	52	5	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	000000000	000000	000000	000000
48	40	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	51	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	000000	000000	00000
31 mm ID
48	20	52	5	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	40	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	51	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	000000	000000	00000
31.5 mm ID
48	20	52	5	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	40	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	51	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	000000	000000	00000
32 mm ID
48	20	52	5	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	40	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	51	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	000000	000000	00000
32.5 mm ID
48	20	52	5	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	40	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	51	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	000000	000000	00000
33 mm ID
48	20	52	5	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	40	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	51	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	000000	000000	00000
33.5 mm ID
48	20	52	5	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	40	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	51	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	000000	000000	00000
34 mm ID
48	20	52	5	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	40	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	51	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	000000	000000	00000
34.5 mm ID
48	20	52	5	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	40	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	51	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	000000	000000	00000
35 mm ID
48	20	52	5	0.025 to 0.05	0.017 to 0.033	-0.2 to 0.2	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	40	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	00000	00000	00000
48	51	52	5	0.025 to 0.05	0.017 to 0.033	-0.3 to 0.3	H	Steel	Rockwell C61	DIN 172	000000000	000000	000000	00000

Self-Centering Screw-Clamp Bushings

A mounting flange prevents movement during tightening, so it's easy to center these bushings in your sprocket. They are also good for shock loads. When you tighten the included screws, the bushing's inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear. They can be mounted on shafts with or without keyways.

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

For Shaft Dia.	OD	Overall Wd.	Max. Torque, in.-lbs.	Fastener Tightening Torque, in.-lbs.	Material	Includes		Each
30mm	48mm	33mm	4,500	90	Steel	Clamping Screws	0000000	000000

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About Plain Bearings

About Shaft Collars

Light Duty Dry-Running Sleeve Bearings

Oil-Embedded Thrust Bearings

Ultra-Low-Friction Oil-Embedded Thrust Bearings

Food Industry Oil-Embedded Thrust Bearings

High-Load Food Industry Oil-Embedded Thrust Bearings

Light Duty Dry-Running Thrust Bearings

High-Load Dry-Running Thrust Bearings

Bearing Retaining Locknuts

Washdown Clamping Shaft Collars

Metric Press-Fit Drill Bushings

Metric Press-Fit Drill Bushings with Head

Self-Centering Screw-Clamp Bushings