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Ball Screws and Nuts
 |  |  |
A | Ball Nuts Flange Nut Style D |
Ball Screws—Right-Hand Threaded
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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.
Thread Size | Lg., ft. | No. of Thread Starts | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Root Dia. | Hardness | Tensile Strength, psi | Temp. Range, ° F | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Alloy Steel | ||||||||||||
| 3/8"-8 | 1 | 1 | 0.125" | ±0.007"/1 ft. | 0.3" | Rockwell C56 | 85,000 | -65 to 300 | 3405N432 | 0000000 | ||
| 3/8"-8 | 2 | 1 | 0.125" | ±0.007"/1" | 0.3" | Rockwell C56 | 85,000 | -65 to 300 | 3405N433 | 000000 | ||
Externally Threaded Ball Nuts—Right-Hand Threaded
|
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. | 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 | ||||||||||||||
| A | 3/8"-8 | 1" | 3/4" | 1 | 0.125" | 11/16"-28 | Rockwell C56 | 170 | 0.015" | -65 to 300 | 3405N458 | 0000000 | ||
Flange Ball Nuts—Right-Hand Threaded
|  |
Style D |
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.
Flange | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Thread Size | Lg. | Dia. | Dia. | Thk. | No. of Thread Starts | Travel Distance per Turn | Bolt Circle Dia. | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash | Temp. Range, ° F | Each | |||
Black-Oxide Alloy Steel | ||||||||||||||||
| D | 3/8"-8 | 1 1/64" | 3/4" | 1 19/32" | 9/32" | 1 | 0.125" | 1 15/64" | Rockwell C56 | 170 | 0.015" | -65 to 300 | 3405N469 | 0000000 | ||
Corrosion-Resistant Ball Screws and Nuts
 |  |  |
Ball Nuts, Externally Threaded Nut, Style A | Ball Nuts Flange Nut Style C |
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.
Ball Screws—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.
Root Diameter—Root diameter indicates the diameter the ball screw will be after machining away the threads.
Thread Size | Lg., ft. | No. of Thread Starts | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Root Dia. | Hardness | Tensile Strength, psi | Temp. Range, ° F | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
17-4 PH Stainless Steel | ||||||||||||
| 3/8"-8 | 1 | 1 | 0.125" | ±0.005"/1 ft. | 0.3" | Rockwell C38 | 150,000 | -65 to 300 | 6641K13 | 0000000 | ||
| 3/8"-8 | 2 | 1 | 0.125" | ±0.004"/1 ft. | 0.3" | Rockwell C38 | 145,000 | -65 to 300 | 6641K1 | 000000 | ||
| 3/8"-8 | 4 | 1 | 0.125" | ±0.004"/1 ft. | 0.3" | Rockwell C38 | 145,000 | -65 to 300 | 6641K2 | 000000 | ||
Externally Threaded Ball Nuts—Right-Hand Threaded
|
Style A |
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. | 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 | ||
Flange Ball Nuts—Right-Hand Threaded
| |
Style C |
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 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Thread Size | Lg. | Dia. | Dia. | Thk. | No. of Thread Starts | Travel Distance per Turn | Bolt Circle Dia. | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash | Temp. Range, ° F | Each | |||
17-4 PH Stainless Steel | ||||||||||||||||
| C | 3/8"-8 | 1" | 3/4" | 1 19/32" | 17/64" | 1 | 0.125" | 1 15/64" | Rockwell C38 | 25 | 0.007" | -65 to 300 | 6641K21 | 0000000 | ||
