2 1/2" Bearings | McMaster-Carr

Clear All

	System of Measurement System of Measurement

Inch

	For Shaft Diameter For Shaft Diameter	Show

2 1/2"

	For Shaft Diameter For Shaft Diameter	Hide

	OD OD

	ID ID

	Bearing Type Bearing Type


Ball	Plain

Roller

	For Load Direction For Load Direction

	Radial
	Combined Radial and Thrust
	Thrust
	Combined Radial, Thrust, and Moment

	For Housing ID For Housing ID

	Mounted Bearing Type Mounted Bearing Type


Base Mount	Four-Bolt Flange Mount

	Dynamic Radial Load Capacity Dynamic Radial Load Capacity

	Width Width

	Shaft Mount Type Shaft Mount Type

	For Shaft Type For Shaft Type


Round	Keyed

	Length Length

	Static Radial Load Capacity Static Radial Load Capacity

Less than 10,000 lbs.

10,000 to 99,999 lbs.

	Ball Bearing Type Ball Bearing Type


Standard	With Retaining Ring

	Lubrication Lubrication

Lubricated

Required

Not Required

	Bearing Trade Number Bearing Trade Number

29585/29520

ER40

	Seal Type Seal Type

Open

Sealed

	Minimum Temperature Minimum Temperature

	Plain Bearing Type Plain Bearing Type


Sleeve	Thrust

	Alignment Style Alignment Style

Self Aligning

Fixed Alignment

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

RoHS Compliant

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

REACH Compliant

View catalog pages (23)

Forward

How can we improve?

37 Products

About Linear Bearings

About Plain Bearings

About Ball and Roller Bearings

With Retaining Ring

Slip these bearings onto a shaft and secure with the included set screws, no special tools required. All have an extended inner ring for additional shaft support.

Bearings with a black-oxide steel ring have some corrosion resistance.

Sealed bearings block out dust and other contaminants better than shielded bearings.

Bearings with a retaining ring have a removable retaining ring that holds the bearing inside a housing.

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

				Inner Ring		Retaining Ring		Radial Load Cap., lbs.
Bearing Trade Number	For Shaft Dia.	For Housing ID	Wd.	OD	Wd.	OD	Thick.	Dynamic	Static	Max. Speed, rpm	Temp. Range, °F	ABEC Rating		Each
Sealed (Lubricated)
Black-Oxide Steel—With Retaining Ring
ER40	2 1/2"	4.922"	1 3/8"	3.4375"	2.75"	5 9/32"	0.10938"	13,950	10,050	2,500	-20° to 220°	ABEC-1	0000000	0000000

Ultra-Thin Ball Bearings

Open

These bearings have twice as many contact points as angular-contact ball bearings. Fit onto large-diameter hollow shafts to run air and hydraulic lines, electrical wiring, and other components through moving parts in assemblies such as index and rotary tables, packaging equipment, and robotics.

Open bearings dissipate heat more efficiently than shielded bearings.

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

			Radial Load Cap., lbs.		Thrust Load Cap., lbs.		Moment Load Cap., ft.-lbs.
For Shaft Dia.	For Housing ID	Wd.	Dynamic	Static	Dynamic	Static	Dynamic	Static	Max. Speed, rpm	Lubrication	Contact Angle	Temp. Range, °F	ABEC Rating		Each
Steel Ring
Open
2 1/2"	3"	1/4"	580	830	910	2,050	50	95	1,200	Required	30°	-60° to 250°	ABEC-1F	0000000	0000000
2 1/2"	3 1/8"	5/16"	840	1,100	1,250	2,800	70	130	1,200	Required	30°	-60° to 250°	ABEC-1F	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.

841 Bronze Bearings

For 2 1/2" Shaft Dia.
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
2 3/4"	2"	9,800 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	000000
2 3/4"	2 1/2"	12,500 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
2 3/4"	3"	14,800 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
2 7/8"	2 1/4"	11,000 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
2 7/8"	2 1/2"	12,500 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
2 7/8"	3"	14,800 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
3"	2"	9,800 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
3"	2 1/2"	12,500 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
3"	3"	14,800 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	00000
3"	4"	20,000 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	000000

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 2 1/2" Shaft Dia.
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
3"	4"	17,800 lbs. @ 30 rpm	Lubricated	SAE 90 Oil	-15° to 300°	00000000	000000

High-Temperature Dry-Running Sleeve Bearings

Graphite provides a layer of dry lubrication that operates in high-temperature environments.

841 bronze bearings are porous and embedded with graphite for continuous lubrication.

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.

Embedded

841 Bronze Bearings
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication Method	Temperature Range, °F		Each
For 2 1/2" Shaft Dia.
3"	4"	16,000 lbs. @ 30 rpm	Embedded	-50° to 700°	00000000	0000000

Multipurpose Dry-Running 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.

Bearings with seals block out dust and contaminants.

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.

Polyester Fabric-Reinforced PTFE Plastic Bearings

Without Seals

For 2 1/2" Shaft Dia.
For Housing ID	Lg.	Dynamic Radial Load Capacity	Color	Temperature Range, °F		Each
2 3/4"	2 1/2"	7,950 lbs. @ 30 rpm	Blue	-40° to 150°	0000000	000000

Polyester Fabric-Reinforced PTFE Plastic Bearings with Seals

With Seals

For 2 1/2" Shaft Dia.
For Housing ID	Lg.	Dynamic Radial Load Capacity	Color	Temperature Range, °F		Each
3 1/4"	3 3/4"	11,900 lbs. @ 30 rpm	Blue	-40° to 150°	0000000	0000000

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.

660 Leaded Bronze Bearings
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Temperature Range, °F		Each
For 2 1/2" Shaft Dia.
3"	4"	38,150 lbs. @ 30 rpm	Required	-350° to 450°	00000000	000000
3"	5"	47,700 lbs. @ 30 rpm	Required	-350° to 450°	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.

841 Bronze Bearings

For 2 1/2" Shaft Dia.
OD	Thick.	Dynamic Thrust Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
3 1/4"	1/8"	6,600 lbs. @ 30 rpm	Lubricated	SAE 30 Oil	-35° to 300°	00000000	000000

Multipurpose Thrust 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.

660 Leaded Bronze
OD	Thick.	Dynamic Thrust Load Capacity	Lubrication	Temperature Range, °F		Each
For 2 1/2" Shaft Dia.
3 1/4"	1/8"	Not Rated	Required	-350° to 450°	00000000	000000

Tapered-Roller Bearings

Found anywhere from machine tool spindles to conveyor rollers, these bearings have a two-piece design that allows for adjustment.

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

				Radial Load Cap., lbs.		Thrust Load Cap., lbs.
For Shaft Dia.	For Housing ID	Wd.	Bearing Trade Number	Dynamic	Static	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F		Each
Steel Ring
Open
2 1/2"	4 1/4"	3/4"	29585/29520	7,600	36,300	5,950	48,400	1,700	Required	-60° to 200°	00000000	0000000

Needle-Roller Thrust Bearings

Thinner rollers allow these bearings to fit in tighter spaces than tapered-roller thrust bearings. Because of the large contact area between the rollers and washers (not included), these bearings are great for medium to heavy duty, low-friction jobs. For use on hardened and ground surfaces.

Washers allow you to use the bearing on unhardened and unground surfaces.

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

Bearings

Bearing

			Thrust Load Cap., lbs.
For Shaft Dia.	OD	Thick.	Dynamic	Static	Max. Speed, rpm	Lubrication	For Shaft Surface Smoothness (Ra), microns	Temp. Range, °F		Each
Steel Rollers
Open
2 1/2"	3 1/4"	5/64"	6,200	37,500	3,300	Required	0.2	0° to 240°	0000000	000000

Washers

Washer

For Shaft Dia.	OD	Thick.	Washer Material		Each
2 1/2"	3 1/4"	0.032"	Steel	00000000	00000

Washers for Needle-Roller Thrust Bearings

Washer

Adapt needle-roller thrust bearings to use on unhardened, unground surfaces.

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

For Shaft Dia.	OD	Thick.	Washer Material		Each
2 1/2"	3 1/4"	0.032"	Steel	00000000	00000

Mounted Sleeve Bearings

With Split Housing

A reliable classic—these babbitt bearings are strong and corrosion resistant.

Bearings with split housing have a removable section for easy maintenance.

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 Lg.	Hole Wd.	Hole Ctr.-to-Ctr.	Dynamic Radial Load Cap.	Temp. Range, °F	Alignment Style	Lubrication		Each
Babbitt Bearings with Split Cast Iron Housing
2 1/2"	2 1/8"	4 3/16"	8 7/8"	5"	5"	1"	5/8"	7"	1,730 lbs. @ 30 rpm	0° to 130°	Fixed Alignment	Required	0000000	0000000

Mounted Roller Bearings

Roller bearings have a thinner profile and larger contact area than ball bearings, making them stronger and more space-efficient than ball bearings.

Sealed bearings block out dust and contaminants.

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

Sealed Tapered-Roller Bearings

Sealed Tapered-Roller Bearing

		Overall			Mounting			Radial Load Cap., lbs.
For Shaft Dia.	Center Ht.	Ht.	Lg.	Wd.	Hole Lg.	Hole Wd.	Hole Ctr.-to-Ctr.	Dynamic	Static	Dynamic Thrust Load Cap., lbs.	Max. Speed, rpm	Temp. Range, °F	Alignment Style	Lubrication		Each
Steel Bearings with Cast Iron Housing—Shaft Mount Type: Set Screw
2 1/2"	2 3/4"	5 23/32"	10 1/2"	4"	7/8"	3/4"	8 1/2"	11,600	54,000	3,450	2,400	-60° to 250°	Fixed Alignment	Lubricated	0000000	0000000

Mounted Ball Bearings with Four-Bolt Flange

Bearings are self-aligning to compensate for shaft misalignment. Seals block out dust and contaminants.

Set screw bearings secure to shafts as you tighten their screw. They don’t need a collar, but the screw leaves some marring on shafts. Use them in applications where shafts rotate in both directions.

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

Bearings

Set Screw Mount

	Overall				Mounting		Radial Load Cap., lbs.
For Shaft Dia.	Ht.	Lg.	Wd.	Flange Thick.	Hole Dia.	Hole Ctr.-to-Ctr.	Dynamic	Static	Max. Speed, rpm	Temp. Range, °F	Alignment Style	Lubrication		Each
Sealed Steel Bearings with Cast Iron Housing
Shaft Mount Type: Set Screw
2 1/2"	7 3/8"	7 3/8"	3 3/16"	7/8"	11/16"	5 7/8"	12,800	9,000	3,000	-20° to 210°	Self Aligning	Lubricated	00000000	0000000

Mounted Roller Bearings with Four-Bolt Flange

The tapered rollers in these bearings support large shafts at high static loads. Seals block out dust and contaminants.

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

	Overall				Mounting		Radial Load Cap., lbs.
For Shaft Dia.	Ht.	Lg.	Wd.	Flange Thick.	Hole Dia.	Hole Ctr.-to-Ctr.	Dynamic	Static	Dynamic Thrust Load Cap., lbs.	Max. Speed, rpm	Temp. Range, °F	Alignment Style	Lubrication		Each
Sealed Tapered-Roller Bearings
Steel Bearings with Cast Iron Housing—Shaft Mount Type: Set Screw
2 1/2"	6 7/8"	6 7/8"	4 3/16"	1 1/2"	5/8"	5 3/8"	11,600	54,000	3,450	2,400	-60° to 250°	Fixed Alignment	Lubricated	0000000	0000000

Insert Bearings

Swap out worn inserts instead of replacing the entire mounted unit. Use the manufacturer model number on your existing mounted bearing to choose a compatible insert. Inserts must be used with the manufacturer model number specified.

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

SKF Steel Insert Bearings
For Shaft Dia.	For Mounted Bearing Model No.		Each
Shaft Mount Type: Set Screw
2 1/2"	F4B 208-TF, FY 2.1/2 TF, FYT 2.1/2 TF	0000000	0000000

Linear and Rotary Ball Bearings

Without End Seals

Engineered for simultaneous linear and rotary motion, these bearings are used with round end-supported shafts. The fixed-alignment design is for use where shaft misalignment is unlikely. To install, slide bearings into a housing (not included) and secure with two retaining rings (sold individually).

Bearings without a maximum stroke length are only limited by the length of shaft they're used on.

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

Bearings											External Retaining Rings
For Shaft Dia.	Overall Lg.	For Housing ID	Retaining Ring Groove End-to-End Lg.	Dynamic Load Capacity, lbs.	Dynamic Rotary Load Capacity	Max. Speed, rpm	Max. Temperature, ° F	For Shaft Material		Each		Each
Fixed Alignment
Steel Bearings without End Seals
2 1/2"	5"	3.7500" - 3.7510"	3.99"	1,800	750 lbs. @ 500 rpm	2,400	200°	Stainless Steel, Steel	0000000	0000000	0000000	000000

Self-Adjusting Spring Bushings

A toothed slot lets these bushings contract for insertion into the bore of your sprocket or pulley and then expand for a snug fit. Made of spring steel, they flex under stress and shock and can handle oscillating or slow rotational motion.

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

For 2 1/2" Shaft Diameter
OD	Overall Wd.	Material		Each
3"	1 1/2"	Steel	00000000	000000
3"	2"	Steel	00000000	00000
3"	3"	Steel	00000000	00000

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
SF Style Bushing
2 1/2"	2 1/2"	5/8"	3/16"	360	Steel	Clamping Screws, Machine Key	00000000	000000
SK Style Bushing
2 1/2"	2 9/32"	5/8"	1/16"	180	Cast Iron	Clamping Screws, Machine Key	00000000	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
2517 Style Bushing
2 1/2"	1 3/4"	5/8"	3/16"	8°	430	Steel	Machine Key, Set Screws	000000000	000000

Email Us

About Linear Bearings

About Plain Bearings

About Ball and Roller Bearings

Set Screw Collar Ball Bearings

Ultra-Thin Ball Bearings

Oil-Embedded Sleeve Bearings

High-Load Oil-Embedded Sleeve Bearings

High-Temperature Dry-Running Sleeve Bearings

Multipurpose Dry-Running Sleeve Bearings

Multipurpose Sleeve Bearings

Oil-Embedded Thrust Bearings

Multipurpose Thrust Bearings

Tapered-Roller Bearings

Needle-Roller Thrust Bearings

Washers for Needle-Roller Thrust Bearings

Mounted Sleeve Bearings

Mounted Roller Bearings

Mounted Ball Bearings with Four-Bolt Flange

Mounted Roller Bearings with Four-Bolt Flange

Insert Bearings

Linear and Rotary Ball Bearings

Self-Adjusting Spring Bushings

Quick-Disconnect (QD) Bushings

Taper-Lock Bushings