2mm Bearings | McMaster-Carr

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24 Products

Selecting Compatible Lead Screws and Nuts

About Ball and Roller Bearings

About Plain Bearings

Stainless Steel Ball Bearings

Bearings are 440C stainless steel for good corrosion resistance.

Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.

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

Shielded

					Radial Load Cap., lbs.
Bearing Trade Number	For Shaft Dia.	For Housing ID	Wd.	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	ABEC Rating		Each
52-2Z	2mm	5mm	2.5mm	440C Stainless Steel	35	10	100,000	Lubricated	-40° to 240°	ABEC-5	00000000	00000
692-2Z	2mm	6mm	3mm	440C Stainless Steel	70	20	90,000	Lubricated	-40° to 240°	ABEC-5	00000000	0000

Precision Stainless Steel Ball Bearings

Open

Made to tight tolerances, these 440C stainless steel bearings combine speed and accuracy with corrosion resistance.

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.
For Shaft Dia.	For Housing ID	Wd.	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	ABEC Rating		Each
Open
2mm	4mm	1.2mm	440C Stainless Steel	18	4	100,000	Lubricated	-30° to 280°	ABEC-7	0000000	000000
2mm	5mm	1.5mm	440C Stainless Steel	22	4	100,000	Lubricated	-30° to 280°	ABEC-7	0000000	00000
2mm	6mm	2.3mm	440C Stainless Steel	37	8	100,000	Lubricated	-30° to 280°	ABEC-7	0000000	00000

Flanged Ball Bearings

The flange ensures proper positioning inside a tube or housing.

440C stainless steel bearings are more corrosion resistant than steel bearings.

Open bearings dissipate heat more efficiently than shielded and sealed bearings.

Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.

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

Open

Flanged Bearing

				Flange			Radial Load Cap., lbs.
Bearing Trade Number	For Shaft Dia.	For Housing ID	Wd.	OD	Thick.	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	ABEC Rating		Each
52	2mm	5mm	2mm	6.2mm	0.6mm	440C Stainless Steel	30	5	110,000	Lubricated	-50° to 300°	ABEC-3	000000000	000000
62	2mm	6mm	2.5mm	7.2mm	0.6mm	440C Stainless Steel	60	15	100,000	Lubricated	-50° to 300°	ABEC-3	000000000	00000
682	2mm	5mm	1.5mm	6.1mm	0.5mm	440C Stainless Steel	30	5	110,000	Lubricated	-50° to 300°	ABEC-3	000000000	00000

Shielded

Flanged Bearing

				Flange			Radial Load Cap., lbs.
Bearing Trade Number	For Shaft Dia.	For Housing ID	Wd.	OD	Thick.	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Temp. Range, °F	ABEC Rating		Each
52-2Z	2mm	5mm	2.5mm	6.2mm	0.6mm	440C Stainless Steel	30	5	94,000	Lubricated	-50° to 300°	ABEC-3	000000000	000000
52-2Z	2mm	5mm	2.5mm	6.2mm	0.6mm	Steel	30	10	94,000	Lubricated	-50° to 300°	ABEC-3	000000000	00000
682-2Z	2mm	5mm	2.3mm	6.1mm	0.6mm	440C Stainless Steel	30	5	94,000	Lubricated	-50° to 300°	ABEC-3	000000000	00000
692-2Z	2mm	6mm	3mm	7.5mm	0.8mm	440C Stainless Steel	60	15	86,000	Lubricated	-50° to 300°	ABEC-3	000000000	00000

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 2 mm Shaft Dia.
For Housing ID, mm	Lg., mm	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
5	2	12 lbs. @ 120 rpm	Lubricated	SAE 30 Oil	10° to 220°	00000000	00000
5	3	18 lbs. @ 120 rpm	Lubricated	SAE 30 Oil	-35° to 300°	0000000	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 2mm Shaft Dia.
For Housing ID	Lg.	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
5mm	3mm	37 lbs. @ 120 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 2mm Shaft Dia.
For Housing ID, mm	Lg., mm	Dynamic Radial Load Capacity	Lubrication	Lubricant	Temperature Range, °F		Each
5	3	18 lbs. @ 120 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.

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 2 mm Shaft Dia.
5	3	37 lbs. @ 120 rpm	Lubricated	SAE 20 Oil with PTFE	-60° to 300°	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 2mm Shaft Dia.
5mm	3mm	6.5mm	1.8mm	18 lbs. @ 120 rpm	90 lbs. @ 120 rpm	Lubricated	SAE 30 Oil	-35° to 300°	0000000	000000

Ultra-Low-Friction Oil-Embedded Flanged 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.

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 2mm Shaft Dia.
5mm	3mm	6.5mm	1.8mm	18 lbs. @ 120 rpm	90 lbs. @ 120 rpm	Lubricated	SAE 20 Oil with PTFE	-60° to 300°	00000000	000000

Food Industry Oil-Embedded Flanged 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. All are FDA Compliant, so they're safe for use in food 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.

841 Bronze Bearings
For Housing ID	Lg.	Flange OD	Flange Thick.	Dynamic Radial Load Capacity	Dynamic Thrust Load Capacity	Lubrication	Lubricant	Temperature Range, °F	Specifications Met		Each
For 2mm Shaft Dia.
5mm	3mm	6.5mm	1.8mm	18 lbs. @ 120 rpm	90 lbs. @ 120 rpm	Lubricated	SAE 20 Oil	-75° to 300°	FDA Compliant 21 CFR 178.3570	0000000	000000

Metric Fast-Travel Ultra-Precision Lead Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. To ensure compatibility, select components that have the same thread size, thread pitch, and number of thread starts.

Lead screws with one coupling end connect directly with your shaft without extra machining. Torque down the locknut once inserted.

Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.

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

Lead Screws with One Coupling End—Right-Hand Threaded

					Compression End
Thread Size	Thread Pitch, mm	Lg., mm	No. of Thread Starts	Thread Type	Dia., mm	Lg., mm	For Shaft Dia., mm	Speed Ratio	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Hardness	Tensile Strength, psi		Each
17-4 PH Stainless Steel
M2	0.4	150	2	Metric Rounded Trapezoidal	6.5	15	2	2:1	0.75	±0.15 mm per 300 mm	Rockwell C35	145,000	00000000	0000000
M2	0.4	150	4	Metric Rounded Trapezoidal	6.5	15	2	4:1	1.5	±0.15 mm per 300 mm	Rockwell C35	145,000	00000000	000000
M2	0.4	150	8	Metric Rounded Trapezoidal	6.5	15	2	8:1	3	±0.15 mm per 300 mm	Rockwell C35	145,000	00000000	000000

Metric Ultra-Precision Lead Screws and Nuts

Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these provide increased nut life and more reliable movement in automated systems. Also known as single-start and self-locking lead screws and nuts, they have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won't unexpectedly move when the lead screw is at rest. To ensure compatibility, select components that have the same thread size, thread type, thread size, thread pitch, and number of thread starts.

Lead screws with one coupling end connect directly with your shaft without extra machining. Torque down the locknut once inserted.

Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.

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

Lead Screws with One Coupling End—Right-Hand Threaded

					Coupling End
Thread Size	Thread Pitch, mm	Lg., mm	No. of Thread Starts	Thread Type	Dia., mm	Lg., mm	For Shaft Dia., mm	Speed Ratio	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Hardness	Tensile Strength, psi		Each
17-4 PH Stainless Steel
M2	0.4	150	1	Metric Rounded Trapezoidal	6.5	15	2	1:1	0.375mm	±0.15 mm per 300 mm	Rockwell C35	145,000	000000000	0000000