64mm Length Bearings | McMaster-Carr

The choice for low-friction motion in high-temperature environments. Bearings are for use with round end-supported shafts and have a fixed-alignment design for applications where shaft misalignment is unlikely. To install, slide bearings into a housing (not included). For bearings with retaining ring grooves, secure with two retaining rings (sold individually).

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

Fixed Alignment–Metric

Bearings
					Load Capacity, lbs.							External Retaining Rings
For Shaft Diameter, mm	Overall Lg., mm	For Housing ID, mm	Retaining Ring Groove End-to-End Length, mm	With End Seals	Dynamic	Static	Dynamic Load Capacity at Maximum Temperature	Temperature Range, ° F	For Shaft Material		Each		Each
Steel Bearings with Steel Balls
30	64	45.000 - 45.025	44.5	No	350	615	350 lbs. @ 230° F	-4° to 230°	Stainless Steel, Steel	00000000	000000	0000000	00000

High-Load Linear Ball Bearings

Bearing with Retaining Ring Grooves

Designed to handle heavy loads, these bearings have higher load capacities than comparable standard linear ball bearings. They are for use with round end-supported shafts and have a self-aligning design to compensate for shaft misalignment. To install, slide bearings into a housing (not included). For bearings with retaining ring grooves, secure with two retaining rings (sold individually).

Bearing with stainless steel balls is more corrosion resistant than bearings with steel balls.

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

Self Aligning with 0.5° Misalignment Capability–Metric

Bearings											External Retaining Rings
For Shaft Dia., mm	Overall Lg., mm	For Housing ID, mm	OD, mm	Retaining Ring Groove End-to-End Lg., mm	With End Seals	Dynamic Load Capacity, lbs.	Max. Temperature, °F	For Shaft Material		Each		Each
Acetal Bearings with Stainless Steel Balls
30	64	45.000 - 45.030	45	44.5	No	1,305	176°	Stainless Steel; Steel	0000000	0000000	0000000	00000
Acetal Bearings with Steel Balls
30	64	45.000 - 45.030	45	44.5	No	1,865	176°	Stainless Steel; Steel	0000000	000000	0000000	0000

High-Load Linear Ball Bearings for Support Rail Shafts

Designed for heavy loads, these bearings have higher load capacities than comparable standard linear ball bearings for support rails. Use them for applications that require maximum rigidity. To install, slide bearings into a housing (not included) and secure in place with two retaining rings (sold individually).

Bearings with stainless steel balls are more corrosion resistant than bearings with steel balls.

Fixed Alignment–Metric

Bearings											External Retaining Rings
For Shaft Dia., mm	Overall Lg., mm	Wd., mm	For Housing ID, mm	Retaining Ring Groove End-to-End Lg., mm	With End Seals	Dynamic Load Capacity, lbs.	Max. Temperature, ° F	For Shaft Material		Each		Each
Acetal Plastic Bearings with Stainless Steel Balls
30	64	15	45.000 - 45.030	44.5	No	1,300	185°	Stainless Steel, Steel	00000000	0000000	0000000	00000
Acetal Plastic Bearings with Steel Balls
30	64	15	45.000 - 45.030	44.5	No	1,800	185°	Stainless Steel, Steel	0000000	000000	0000000	0000

High-Temperature Linear Ball Bearings for Support Rail Shafts

The choice for low-friction motion in high-temperature environments. Mount these bearings on a support rail shaft for applications requiring maximum rigidity. They have a fixed-alignment design for applications where shaft misalignment is unlikely. To install, slide bearings into a housing (not included) and secure in place with two retaining rings (sold separately).

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

Fixed Alignment–Metric

Bearings
					Load Capacity, lbs.						External Retaining Rings
For Shaft Dia., mm	Overall Lg., mm	Wd., mm	For Housing ID, mm	Retaining Ring Groove End-to-End Lg., mm	Dynamic	Static	Temperature Range, ° F	For Shaft Material		Each	Pkg. Qty.		Pkg.
Steel Bearings
30	64	15	45.000 - 45.025	44.5	350	615	-4° to 230°	Stainless Steel, Steel	00000000	000000	1	0000000	00000

Corrosion-Resistant Flange-Mounted Linear Ball Bearings

Round Flange

The bearing, housing, and balls of these mounted bearings are stainless steel for excellent corrosion resistance. The flanged housing is good for vertical linear motion applications. All bearings are for use with round end-supported shafts and have a fixed-alignment design for use where shaft misalignment is unlikely. End seals keep lubricant in and dirt out.

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

Fixed Alignment–Metric

	Overall							Load Capacity, lbs.				Mounting Holes
For Shaft Dia., mm	Lg., mm	Wd., mm	Ht., mm	Flange Thick., mm	Flange OD, mm	Bolt Circle Dia., mm	OD, mm	Dynamic	Static	Temperature Range, ° F	For Shaft Material	No. of	Dia., mm		Each
440C Stainless Steel Bearings with Round Flanged Housing
30	64	58	58	10	74	60	45	350	610	-4° to 248°	Stainless Steel, Steel	4	6.6	0000000	0000000

Metric Ball Screws and Nuts

Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start ball screws and nuts, these have a single thread that runs the length of the screw. They operate with more torque than fast-travel ball screws and nuts. To ensure compatibility, select components that have the same thread size and travel distance per turn. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.

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

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

Platform Ball Nuts—Right-Hand Threaded

Alloy Steel
Thread Size	Lg., mm	Wd., mm	Ht., mm	Center Ht., mm	No. of Thread Starts	Travel Distance per Turn, mm	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash, mm	Includes	Temperature Range, °F		Each
M32	64	70	62	26	1	10	Rockwell C58	4,440	0.2	Seals	Not Rated to 175°	00000000	0000000
M36	64	86	67	29	1	10	Rockwell C58	4,670	0.2	Seals	Not Rated to 175°	00000000	000000

Flange Ball Nuts—Right-Hand Threaded

			Flange
Thread Size	Lg., mm	Dia., mm	Wd., mm, mm	Ht., mm	Thick., mm	No. of Thread Starts	Travel Distance per Turn, mm	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash, mm	Temperature Range, °F		Each
Alloy Steel
M20	64	52	82	64	12	1	10	Rockwell C58	2,350	0.1	5° to 175°	0000000	0000000