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Metric Precision Lead Screws and Nuts
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Pair with a motor in automated motion and positioning applications. A tight thread fit allows these lead screws and nuts to make accurate, repeatable starts and stops. Also known as single-start and self-locking lead screws and nuts, they have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won’t unexpectedly move when the lead screw is at rest. To ensure compatibility, select components that have the same thread direction, size, and number of thread starts.
Lead Screws—Right-Hand Thread
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1018 Low-Carbon Steel—Carbon steel lead screws and flanges have good machinability.
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
Thread Size | Lg., mm | Thread Type | Speed Ratio | No. of Thread Starts | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength, psi | Specs. Met | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1018 Low-Carbon Steel | ||||||||||||||
| M10 × 2 mm | 250 | Metric Trapezoidal | 1:1 | 1 | 2 | ±0.15 mm/300 mm | Metric Trapezoidal Class 8e | Brinell 150 | 85,000 | DIN 103 | 7549K71 | 000000 | ||
Metric Fast-Travel Ultra-Precision Lead Screws and Nuts
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Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. To ensure compatibility, select components that have the same thread size and number of thread starts.
Lead Screw—Right-Hand Thread
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304 Stainless Steel—304 stainless steel lead screws have good corrosion resistance.
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
Thread Size | Lg., mm | Thread Type | Speed Ratio | No. of Thread Starts | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
304 Stainless Steel | ||||||||||||
| M8 × 2.5 mm | 250 | Metric Rounded Trapezoidal | 4:1 | 4 | 10 | ±0.1 mm/300 mm | Brinell 160 | 72,000 | 2391N24 | 000000 | ||
| M10 × 3 mm | 250 | Metric Rounded Trapezoidal | 4:1 | 4 | 12 | ±0.1 mm/300 mm | Brinell 160 | 72,000 | 2391N26 | 00000 | ||
| M12 × 2.5 mm | 250 | Metric Rounded Trapezoidal | 2:1 | 2 | 5 | ±0.1 mm/300 mm | Brinell 160 | 72,000 | 2391N28 | 00000 | ||
| M16 × 5 mm | 250 | Metric Rounded Trapezoidal | 7:1 | 7 | 35 | ±0.1 mm/300 mm | Brinell 160 | 72,000 | 2391N32 | 00000 | ||
Ball Screws and Nuts
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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.
Ball Screws with Flange Ball Nut—Right-Hand Threaded
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Root diameter indicates the diameter the ball screw will be after machining away the threads.
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.
Ball Screw | Flange Ball Nut, mm | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Lg., mm | Root Dia., mm | Tensile Strength, psi | Lg. | Dia. | Lg. Tolerance Type | No. of Thread Starts | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash, mm | Temp. Range, ° F | Each | |||
Carbon Steel Ball Screw with Alloy Steel Flange Ball Nut | |||||||||||||||||
| M6 | 250 | 5.3 | 21,000 | 21 | 13 | Plus | 1 | 1 | ±0.210 mm/300 mm | Rockwell C58 | 150 | 0.05 | 5 to 175 | 6638K1 | 0000000 | ||
| M8 | 250 | 6.6 | 21,000 | 28 | 20 | Plus | 1 | 2 | ±0.210 mm/300 mm | Rockwell C58 | 470 | 0.05 | 5 to 175 | 6638K3 | 000000 | ||
