M15 Ball Screws | McMaster-Carr

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Component

System of Measurement

Length

Travel Distance per Turn

Threading

Root Diameter

Diameter

Nut Type

Number of Thread Starts

Center Height

28 mm

Locknut Thread Size

M15

Dynamic Thrust Load Capacity

2,000 lb. to 9,999 lb.

10,000 lb. to 19,999 lb.

Dynamic Combined Load Capacity

1,700 lbf

For Load Direction

Combined Radial and Thrust

Thread Type

Material

Thread Direction

Width

Bearing Trade Number

Hardness

DFARS Specialty Metals

Exempt

REACH

Compliant

Export Control Classification Number (ECCN)

RoHS

11 Products

Fast-Travel Ball Screws and Nuts


	Ball Nuts Flange Nut Style E

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.

Ball Screws—Right-Hand Threaded

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

Root Diameter—Root diameter indicates the diameter the ball screw will be after machining away the threads.

	Lg., mm	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Root Dia., mm	Hardness	Tensile Strength, psi	Temp. Range, ° F		Each
Carbon Steel



	M15	500	4	16	±0.05 mm/300 mm	12.9	Rockwell C56	95,000	32 to 150	00000000	000000


	M15	500	4	20	±0.05 mm/300 mm	12.3	Rockwell C56	95,000	32 to 150	00000000	000000
	M15	1,000	4	16	±0.05 mm/300 mm	12.9	Rockwell C56	95,000	32 to 150	00000000	000000
	M15	1,000	4	20	±0.05 mm/300 mm	12.3	Rockwell C56	95,000	32 to 150	00000000	000000

Flange Ball Nuts—Right-Hand Threaded

Style E

Image of Attribute. Front orientation. Contains Annotated. Fast-Travel Ball Screws and Nuts.

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

					Flange, mm
	Style	Thread Size	Lg., mm	Dia., mm	Dia.	Thk.	No. of Thread Starts	Travel Distance per Turn, mm	Bolt Circle Dia., mm	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash, mm	Temp. Range, ° F		Each
Carbon Steel



		E	M15	56	33	57	10	4	20	45	Rockwell C56	2,250	0.04	32 to 150	00000000	0000000


		E	M15	61	27	48	10	4	16	38	Rockwell C56	2,200	0.04	32 to 150	00000000	000000

Roller Screws and Nuts

Precision ground to create more points of contact, these roller screws and nuts are highly accurate and handle much higher loads than ball screws and nuts of the same size. They're most traditionally used to replace hydraulics in linear actuators but can also be used in place of ball and lead screw assemblies because of their high load capacity and precise motion control. In fact, they're almost four times more accurate than our most accurate ball and lead screws. They also last longer than ball screw nuts in systems with lower loads and can handle higher shock loads. However, because they have more contact points, they’re slightly less efficient than ball screws. To ensure compatibility, select components that have the same thread direction and size.

Roller Screws—Right-Hand Partially Threaded

Roller screws are made of hardened steel for strength and durability.

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

	Lg., mm	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Min. Thread Lg., mm	Root Dia., mm	Hardness	Tensile Strength, psi		Each
Alloy Steel



	M15	642	5	4	±0.023 mm/300 mm	522	14.59	Rockwell C60	105,000	0000000	000000000


	M15	642	5	5	±0.023 mm/300 mm	522	14.44	Rockwell C60	105,000	0000000	00000000

Round Nuts—Right-Hand Thread

Image of Product. Front orientation. Roller Screws and Nuts. Nuts.

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

						Keyway, mm
	Thread Size	Lg., mm	Dia., mm	No. of Thread Starts	Travel Distance per Turn, mm	Wd.	Dp.	Hardness	Dynamic Thrust Load Cap., lb.	Max. Backlash, mm	Temp. Range, ° F	Lubrication		Each
Alloy Steel



		M15	45	35	5	4	4	14	Rockwell C60	9,230	0.03	-40 to 350	Required	0000000	000000000


		M15	45	35	5	5	4	14	Rockwell C60	12,000	0.03	-40 to 350	Required	0000000	00000000

End Supports for Ball Screws and Precision Lead Screws

A set of ball bearings reduces friction and secures the end of a ball or lead screw. Note: The end of your ball or lead screw must be machined before installing it into an end support.

For Combined Radial and Thrust Loads About For Combined Radial and Thrust Loads

Image of Product. Front orientation. Contains Annotated. End Supports for Ball Screws and Precision Lead Screws. For Combined Radial and Thrust Loads.

End supports for combined radial and thrust loads handle radial loads (perpendicular to the lead screw) and thrust loads (parallel to the lead screw).

						Combined Load Cap., lbf			Top Mounting Holes, mm
	ID, mm	Ht., mm	Ctr. Ht., mm	Wd., mm	Dp., mm	Static	Dynamic	No. of Mounting Holes	Dia.	Ctr.-to-Ctr. Wd.	Temp. Range, ° F		Each
Carbon Steel



		15	48	28	70	38	890	1,700	4	6.6	54	0 to 160	0000000	0000000