28mm Bearings | McMaster-Carr

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	System of Measurement System of Measurement

Metric

	For Shaft Diameter For Shaft Diameter	Show

28mm

	For Shaft Diameter For Shaft Diameter	Hide

	ID ID

28mm

28.01mm

28.076mm

	OD OD

	For Load Direction For Load Direction

	Radial
	Combined Radial and Thrust
	Thrust

	For Housing ID For Housing ID

	Bearing Type Bearing Type


Ball	Plain

Roller

	Width Width

15mm

16 mm

20 mm

	Ball Material Ball Material

Steel

Stainless Steel

	Dynamic Radial Load Capacity Dynamic Radial Load Capacity

	For Shaft Type For Shaft Type


Round	Keyed

Spline

	Plain Bearing Type Plain Bearing Type


Sleeve	Flanged

Thrust

	Length Length

	Dynamic Thrust Load Capacity Dynamic Thrust Load Capacity

	Cage Material Cage Material

Steel

Plastic

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Material Material

	Lubrication Lubrication

Lubricated

Required

Not Required

	Maximum Temperature Maximum Temperature

Less than 250° F

250° to 499° F

500° to 999° F

	Minimum Temperature Minimum Temperature

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

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

REACH Compliant

	Ball Bearing Type Ball Bearing Type

	Standard

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37 Products

About Linear Bearings

About Plain Bearings

About Ball and Roller 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.

Steel balls and washers allow these bearings to handle higher loads than bearings with stainless steel components. With an open design, they dissipate heat more efficiently than one-piece thrust ball bearings.

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

					Thrust Load Cap., lbs.
For Shaft Dia.	OD	Thick.	Cage Material	Washer Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	Includes		Each
Open
28mm	44mm	11.11mm	Nylon Plastic	Steel	50	500	5,000	Required	-40° to 220°	Two Washers	0000000	00000

Corrosion-Resistant Thrust Ball Bearings

A combination of stainless steel and nylon components provide increased corrosion resistance over standard thrust ball bearings. With an open design, they dissipate heat more efficiently than one-piece thrust ball bearings.

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

					Thrust Load Cap., lbs.
For Shaft Dia.	OD	Thick.	Cage Material	Washer Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	Includes		Each
Open
28mm	44mm	11.11mm	Nylon Plastic	410 Stainless Steel	50	350	5,000	Required	-40° to 220°	Two Washers	0000000	000000

Oil-Embedded Sleeve 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 28 mm Shaft Dia.
For Housing ID, mm	Lg., mm	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
32	22	1,900 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	000000
32	28	2,400 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
33	30	2,550 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
36	20	1,700 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	0000
36	25	2,100 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
36	40	3,400 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.

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 28mm Shaft Dia.
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
32mm	22mm	3,800 lbs. @ 30 rpm	Lubricated	SAE 90 Oil	-15° to 300°	00000000	000000

Ultra-Low-Friction Oil-Embedded Sleeve 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 841 Bronze Bearings

For 28mm Shaft Dia.
For Housing ID, mm	Lg., mm	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
32	22	1,900 lbs. @ 30 rpm	Lubricated	SAE 20 Oil with PTFE	-60° to 300°	00000000	000000

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. As sleeve bearings, they handle loads parallel to the shaft.

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 28 mm Shaft Dia.
32	22	3,800 lbs. @ 30 rpm	Lubricated	SAE 20 Oil with PTFE	-60° to 300°	00000000	000000

Light Duty Dry-Running Sleeve 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 28mm Shaft Dia.
32mm	28mm	350 lbs. @ 30 rpm	Off-White	-10° to 220°	0000000	000000
36mm	30mm	370 lbs. @ 30 rpm	Off-White	-10° to 220°	00000000	00000

Multipurpose Sleeve Bearings

These 660 leaded bronze bearings are strong, wear resistant, and excellent at handling shock loads. They’re sometimes called 932 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 660 Leaded Bronze Bearings
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Temperature Range, °F		Each
For 28mm Shaft Dia.
35mm	25mm	4,300 lbs. @ 30 rpm	Required	-350° to 450°	00000000	000000
35mm	40mm	6,900 lbs. @ 30 rpm	Required	-350° to 450°	00000000	00000

Corrosion-Resistant Sleeve Bearings

The addition of iron and aluminum gives these bearings high strength and excellent corrosion resistance—making them suitable for use in marine and mining applications.

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 954 Aluminum-Bronze Bearings
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Temperature Range, °F		Each
For 28mm Shaft Dia.
35mm	100mm	62,650 lbs. @ 30 rpm	Required	-350° to 500°	00000000	000000

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 28mm Shaft Dia.
32mm	7mm	35mm	2mm	340 lbs. @ 30 rpm	480 lbs. @ 30 rpm	Yellow	-50° to 190°	00000000	00000

Multipurpose Flanged Sleeve Bearings

These leaded bronze bearings are strong, wear resistant, and excellent at handling shock loads. They’re sometimes called 932 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 660 Leaded Bronze Bearings
For Housing ID	Lg.	Flange OD	Flange Thick.	Dynamic Radial Load Capacity	Dynamic Thrust Load Capacity	Lubrication	Temperature Range, °F		Each
For 28mm Shaft Dia.
36mm	32mm	44mm	4mm	5,550 lbs. @ 30 rpm	5,600 lbs. @ 30 rpm	Required	-350° to 450°	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

Needle-Roller Bearings

Also known as drawn-cup roller bearings, these are our thinnest roller bearings. The outer ring is drawn out to form a lip that holds the bearing together. Bearings take on the shape of their housing and may be oblong prior to installation.

Open bearings dissipate heat more efficiently than sealed bearings.

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

				Radial Load Cap., lbs.
For Shaft Dia.	For Housing ID	Wd.	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	For Shaft Surface Smoothness (Ra), microinch	Temp. Range, °F	Specifications Met		Each
Open
28mm	35mm	16mm	Steel	3,650	5,950	9,200	Required	8	-20° to 280°	DIN 618, ISO 3245	0000000	000000
28mm	35mm	20mm	Steel	4,650	8,050	9,200	Required	8	-20° to 280°	DIN 618, ISO 3245	00000000	00000

Linear Bearings for Spline Shafts

Grooved on the inside, these bearings rotate with your spline shaft as they move loads up and down its length. They have fixed alignment—use them where shaft misalignment is unlikely.

Ball bearings, also known as ball splines, create less friction than plain bearings, making them smooth and precise even at high speeds. However, they don’t produce as much rotational force. Choose them for robotic systems and other automated applications that require complex, fast movements.

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

Steel Ball Bearings

Ball Bearing with Steel Balls

For Four Splines

Fixed Alignment
For No. of Splines	For Shaft Dia., mm	Overall Lg., mm	OD, mm	Max. Torque, in.-lbs.	Max. Temperature, °F		Each
4	28	80	45	2,557	176°	00000000	0000000

Steel Spline Shafts

Splined End × Step-Down End

Four Splines

				Step
Dia., mm	Lg., mm	Spline Lg., mm	End Type	Dia., mm	Lg., mm		Each
4 Splines
28	450	300	Splined End × Step-Down End	25	150	00000000	0000000

Mounted Linear Bearings for Spline Shafts

Ready to mount on your linear motion spline shaft, these bearings come installed in a housing and have grooves that match up with the splines on your shaft. Because they’re splined, they transfer rotational force as they move loads up and down the shaft’s length. A flanged end makes them best for lifting and lowering loads on vertical shafts. All have fixed alignment—use them where shaft misalignment is unlikely.

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

Steel Ball Bearings with Steel Housing

Ball Bearing

For Four Splines

								Mounting Holes
For No. of Splines	For Shaft Dia., mm	Overall Lg., mm	Flange OD, mm	Bolt Circle Dia., mm	OD, mm	Max. Torque, in.-lbs.	Max. Temperature, ° F	No. of	Thread Size		Each
Fixed Alignment
4	28	80	70	54	45	2,557	176°	4	M6 × 1 mm	00000000	0000000

Steel Spline Shafts

Splined End × Step-Down End

Four Splines

				Step
Dia., mm	Lg., mm	Spline Lg., mm	End Type	Dia., mm	Lg., mm		Each
4 Splines
28	450	300	Splined End × Step-Down End	25	150	00000000	0000000

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

Quick-Grip Screw-Clamp Bushings

Also known as Trantorque bushings, these tighten with a twist of the collar nut—no screws needed. As you tighten the collar nut, the inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear.

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

Zinc-Plated Steel
For Shaft Dia.	OD	Overall Wd.	Max. Torque, in.-lbs.		Each
28mm	51mm	57mm	4,350	0000000	0000000

Quick-Disconnect (QD) Bushings

Clamp On

The screw connections on these bushings easily mate to compatible quick-disconnect sprockets and pulleys. Bushings fit quick-disconnect (QD) sprockets and pulleys of the same bushing style. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.

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

		Keyway
For Shaft Dia.	Overall Wd.	Wd.	Dp.	Fastener Tightening Torque, in.-lbs.	Material	Includes		Each
Clamp On
SD Style Bushing
28mm	54mm	8mm	3.3mm	108	Steel	Clamping Screws	0000000	000000
SDS Style Bushing
28mm	43mm	8mm	3.3mm	108	Steel	Clamping Screws	0000000	00000
SH Style Bushing
28mm	41mm	8mm	3.3mm	108	Steel	Clamping Screws	0000000	00000
SK Style Bushing
28mm	59mm	8mm	3.3mm	180	Steel	Clamping Screws	0000000	00000

Taper-Lock Bushings

Mount these hubless bushings flush into your sprocket or pulley for a slim profile with no protruding screws. They are for use with taper-lock sprockets of the same bushing style. As you tighten the included set screws, the bushing grips the shaft and pulls it into your sprocket or pulley.

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

		Keyway
For Shaft Dia.	Overall Wd.	Wd.	Dp.	Taper	Fastener Tightening Torque, in.-lbs.	Material	Includes		Each
1210 Style Bushing
28mm	25mm	8mm	3.3mm	8°	175	Steel	Set Screws	000000000	000000
1610 Style Bushing
28mm	25mm	8mm	3.3mm	8°	175	Steel	Set Screws	000000000	00000
1615 Style Bushing
28mm	38mm	8mm	3.3mm	8°	175	Steel	Set Screws	000000000	00000
2012 Style Bushing
28mm	32mm	8mm	3.3mm	8°	280	Steel	Set Screws	000000000	00000

Split-Tapered Bushings

Steel and Cast Iron

The tapered barrel on these bushings is split on both sides, allowing them to contract more tightly around the shaft than quick-disconnect and taper-lock bushings. They're for use with split-tapered sprockets and pulleys of the same bushing style. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.

Bushings with a machine key fit into a matching keyway on a sprocket or pulley for high-torque applications.

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

		Keyway
For Shaft Dia.	Overall Wd.	Wd.	Dp.	Taper	Fastener Tightening Torque, in.-lbs.		Each
Steel
H Style Bushing
28mm	1 1/4"	8mm	3mm	3°	95	00000000	000000
Cast Iron
P1 Style Bushing with Machine Key
28mm	1 15/16"	8mm	3mm	3°	192	00000000	00000