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Ball Screws and Nuts
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A | Ball Nuts, Externally Threaded Nut, Style B |
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.
Externally Threaded Ball Nuts—Right-Hand Threaded
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A | Style B |
Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.
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.
Wipers—Secure a way wiper on the end of a ball nut to sweep chips and other contaminants out of the way as it moves across the ball screw.
Ball Screw Nuts | Wipers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Style | Thread Size | Lg. | Wd. | Ht. | Dia. | No. of Thread Starts | Travel Distance per Turn | External Thread Size | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash | Temp. Range, ° F | Each | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Black-Oxide Alloy Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 3/8"-8 | 1" | — | — | 3/4" | 1 | 0.125" | 11/16"-28 | Rockwell C56 | 170 | 0.015" | -65 to 300 | 3405N458 | 0000000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 5/8"-5 | 1 45/64" | 1" | 1" | — | 1 | 0.2" | 15/16"-16 | Rockwell C56 | 820 | 0.015" | -65 to 300 | 3405N481 | 00000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 3/4"-5 | 2 7/8" | — | — | 1 1/4" | 1 | 0.2" | 1 1/8"-18 | Rockwell C56 | 1,900 | 0.015" | -65 to 300 | 3405N459 | 00000 | 2528N34 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 1 1/2"-2 | 5 9/16" | — | — | 2 5/8" | 1 | 0.5" | 2 23/64"-18 | Rockwell C56 | 12,900 | 0.015" | -65 to 300 | 3405N461 | 000000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 1 1/2"-4 | 3" | — | — | 2 3/32" | 1 | 0.25" | 1 31/32"-18 | Rockwell C56 | 4,250 | 0.015" | -65 to 300 | 3405N462 | 000000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 2 1/4"-2 | 6 11/16" | — | — | 3 3/8" | 1 | 0.5" | 3.137"-12 | Rockwell C58 to Rockwell C62 | 21,306 | 0.015" | -65 to 300 | 3405N731 | 00000000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| B | 1"-4 | 2 11/32" | 1 1/2" | 1 1/2" | — | 1 | 0.25" | 1 9/16"-18 | Rockwell C56 | 1,625 | 0.015" | -65 to 300 | 3405N463 | 000000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Externally Threaded Ball Nuts—Left-Hand Threaded
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A |
Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.
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.
Style | Thread Size | Lg. | Wd. | Ht. | No. of Thread Starts | Travel Distance per Turn | External Thread Size | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash | Temp. Range, ° F | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Black-Oxide Alloy Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 5/8"-5 | 1 45/64" | 1" | 1" | 1 | 0.2" | 15/16"-16 | Rockwell C56 | 820 | 0.015" | -65 to 300 | 3405N456 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 1"-4 | 2 11/32" | 1 1/2" | 1 1/2" | 1 | 0.25" | 1 9/16"-18 | Rockwell C56 | 1,620 | 0.015" | -65 to 300 | 3405N457 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Fast-Travel Ball Screws and Nuts
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Ball Nuts, Externally Threaded Nut, Style A | Ball Nuts, Externally Threaded Nut, Style B | Ball Nuts, Externally Threaded Nut, Style C | Ball Nuts, Externally Threaded Nut, Style D |
Externally Threaded Ball Nuts—Right-Hand Threaded
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Style A | Style B |
| |
Style C | Style D |
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.
Black-Oxide Alloy Steel—Black-oxide alloy steel ball nuts have mild corrosion resistance.
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.
Wipers—Secure a way wiper on the end of a ball nut to sweep chips and other contaminants out of the way as it moves across the ball screw.
Ball Screw Nuts | Wipers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Thread Size | Lg. | Wd. | Ht. | Dia. | No. of Thread Starts | Travel Distance per Turn | External Thread Size | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash | Temp. Range, ° F | Each | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Carbon Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | M12 | 50 mm | — | — | 30 mm | 1 | 10 mm | M25 | Rockwell C56 | 1,000 | 0.02 mm | 32 to 150 | 4566N301 | 0000000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| B | M16 | 50 mm | — | — | 39 mm | 4 | 16 mm | M30 | Rockwell C56 | 1,500 | 0.04 mm | 32 to 150 | 4566N302 | 000000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| C | M32 | 90 mm | — | — | 53 mm | 4 | 32 mm | M50 | Rockwell C56 | 3,700 | 0.03 mm | 32 to 150 | 4566N303 | 000000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Black-Oxide Alloy Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| C | 1/2"-4 | 1 3/4" | — | — | 1 1/16" | 2 | 0.5" | 15/16"-16 | Rockwell C56 | 850 | 0.015" | -65 to 300 | 3405N464 | 00000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| C | 3/4"-4 | 2 15/16" | — | — | 1 5/16" | 2 | 0.5" | 1 1/4"-16 | Rockwell C56 | 3,400 | 0.015" | -65 to 300 | 3405N465 | 00000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| C | 1"-4 | 3 1/8" | — | — | 1 11/16" | 2 | 0.5" | 1 9/16"-18 | Rockwell C56 | 4,250 | 0.015" | -65 to 300 | 3405N466 | 000000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| C | 1 1/2"-2 | 3 3/4" | 2 1/4" | 2 1/4" | 2 5/8" | 2 | 1" | 2 1/4"-20 | Rockwell C56 | 8,000 | 0.015" | -65 to 300 | 3405N467 | 000000 | 2528N42 | 0000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| D | 1"-4 | 3" | 1 1/2" | 1 1/2" | — | 4 | 1" | 1 9/16"-18 | Rockwell C56 | 2,300 | 0.015" | -65 to 300 | 3405N468 | 000000 | ——— | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Corrosion-Resistant Ball Screws and Nuts
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Ball Nuts, Externally Threaded Nut, Style A | Ball Nuts, Externally Threaded Nut, Style B |
Suitable for use in harsh environments, these ball screws and nuts are made of stainless steel. 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 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.
Externally Threaded Ball Nuts—Right-Hand Threaded
| |
Style A | Style B |
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.
Style | Thread Size | Lg. | Wd. | Ht. | Dia. | No. of Thread Starts | Travel Distance per Turn | External Thread Size | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash | Temp. Range, ° F | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17-4 PH Stainless Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 3/8"-8 | 1" | — | — | 3/4" | 1 | 0.125" | 0.664"-32 | Rockwell C38 | 25 | 0.007" | -65 to 300 | 6641K9 | 0000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| B | 5/8"-5 | 1 23/32" | 1" | 1" | — | 1 | 0.2" | 15/16"-16 | Rockwell C38 | 170 | 0.007" | -65 to 300 | 6641K12 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Fast-Travel Corrosion-Resistant Ball Screws and Nuts
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Multiple thread channels (also known as thread starts) create faster linear travel than ball screws with a single thread start. Suitable for use in harsh environments, these ball screws and nuts are made of stainless steel. 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. 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.
Externally Threaded Ball Nuts—Right-Hand Threaded
 |
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.
Thread Size | Lg. | Dia. | No. of Thread Starts | Travel Distance per Turn | External Thread Size | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash | Temp. Range, ° F | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17-4 PH Stainless Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/2"-4 | 1 3/4" | 1 1/16" | 2 | 0.5" | 15/16"-16 | Rockwell C38 | 140 | 0.007" | -65 to 300 | 6641K32 | 0000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/4"-4 | 2 15/16" | 1 5/16" | 2 | 0.5" | 1 1/4"-16 | Rockwell C38 | 600 | 0.007" | -65 to 300 | 6641K17 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Self-Stopping Ball Screws and Nuts
 |
Stop Pin Shown Installed |
Keep your ball screw spinning without the ball nut damaging your system—a clutch-like collar inside the ball nut prevents it from travelling past the stop pins. Install the included stop pins anywhere along the length of the ball screw by drilling a hole in the valley of the threads (also known as the root) and pressing in the stop pin. When the collar meets the stop pin, the ball nut disengages from the threads and begins to idle. To start the ball nut travelling again, spin the ball screw in the opposite direction. All components are black-oxide steel and have mild corrosion resistance. To ensure compatibility, select components that have the same thread 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.
Externally Threaded Ball Nuts—Right-Hand Threaded
 |
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.
Thread Size | Lg. | Dia. | No. of Thread Starts | Travel Distance per Turn | External Thread Size | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash | Temp. Range, ° F | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Black-Oxide Alloy Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 5/8"-6 | 1 7/8" | 1" | 2 | 0.188" | 15/16"-16 | Rockwell C56 | 300 | 0.006" | -65 to 300 | 2385N14 | 0000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1"-4 | 2 23/32" | 1 5/8" | 2 | 0.274" | 1.563"-18 | Rockwell C56 | 900 | 0.008" | -65 to 300 | 2385N19 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
