Metric Ball Flanges | McMaster-Carr

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13 Products

Selecting Compatible Lead 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, they 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 direction and size. 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.

Flange Ball Nuts—Right-Hand Threaded

				Flange
	Thread Size	Lg.	Dia.	Wd.	Ht.	Thick.	No. of Thread Starts	Travel Distance per Turn	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash		Each
Alloy Steel
C	M14	40mm	31mm	50mm	37mm	10mm	1	4mm	Rockwell C58	1,200	0.1mm	0000000	0000000
C	M16	40mm	34mm	54mm	40mm	10mm	1	5mm	Rockwell C58	1,200	0.1mm	0000000	000000
C	M20	40mm	40mm	60mm	46mm	10mm	1	5mm	Rockwell C58	1,300	0.1mm	0000000	000000
C	M20	64mm	52mm	82mm	64mm	12mm	1	10mm	Rockwell C58	2,350	0.1mm	0000000	000000
C	M25	40mm	43mm	67mm	50mm	10mm	1	5mm	Rockwell C58	1,500	0.1mm	0000000	000000
C	M25	98mm	60mm	96mm	72mm	15mm	1	10mm	Rockwell C58	7,000	0.1mm	0000000	000000

Fast-Travel Ball Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than ball screws with a single thread start. Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. To ensure compatibility, select components that have the same thread size and number of thread starts. 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.

Carbon steel ball screws and nuts are case hardened, so they resist wear better than standard carbon steel. However, they are less corrosion resistant than black-oxide alloy steel screws and nuts.

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.

Flange Ball Nuts—Right-Hand Threaded

				Flange
	Thread Size	Lg.	Dia.	Dia.	Thick.	No. of Thread Starts	Travel Distance per Turn	Bolt Circle Dia.	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash	Temperature Range, °F		Each
Carbon Steel
E	M12	43mm	23mm	40mm	10mm	2	10mm	32mm	Rockwell C56	1,100	0.02mm	32° to 150°	00000000	0000000
E	M15	56mm	33mm	57mm	10mm	4	20mm	45mm	Rockwell C56	2,250	0.04mm	32° to 150°	00000000	000000
E	M15	61mm	27mm	48mm	10mm	4	16mm	38mm	Rockwell C56	2,200	0.04mm	32° to 150°	00000000	000000
E	M20	77mm	35mm	58mm	10mm	4	20mm	47mm	Rockwell C56	2,750	0.04mm	32° to 150°	00000000	000000
E	M32	88mm	53mm	86mm	14mm	4	32mm	71mm	Rockwell C56	5,800	0.05mm	32° to 150°	00000000	000000
E	M32	108mm	49mm	80mm	16mm	2	20mm	65mm	Rockwell C56	4,900	0.04mm	32° to 150°	00000000	000000
E	M40	101mm	66mm	106mm	18mm	4	40mm	85mm	Rockwell C56	9,550	0.07mm	32° to 150°	00000000	000000