Power Screw Ball Screw Specs: acme
Lead screw and ball screw specifications including diameter, lead, starts, efficiency, dynamic/static load capacity, max speed, backlash, accuracy class, and L10 life — covers acme, buttress, square thread, ball screw, and planetary roller screw types from 3/8-in to 4-in nominal diameter
| screw type | size key | accuracy class | backlash in (in) | critical speed rpm at 24in unsupported (rpm) | drag torque in lb (in·lbf) | dynamic load capacity lb (lbf) | efficiency pct (%) | lead in (in) | max PV factor | max speed rpm (rpm) | nominal diameter in (in) | notes | pitch in (in) | preload type | root diameter in (in) | starts | static load capacity lb (lbf) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| acme | 0.3750#0.1000#commercial#none | commercial | 0.02 | 1,850 | 0.8 | 580 | 35 | 0.1 | 3,500 | 1,200 | 0.375 | Single-start 10 TPI ACME; efficiency per bronze nut | 0.1 | none | 0.293 | 1 | 870 |
| acme | 0.5000#0.1000#commercial#none | commercial | 0.02 | 1,560 | 1.2 | 1,100 | 37 | 0.1 | 3,500 | 1,000 | 0.5 | Single-start 10 TPI ACME; bronze nut efficiency | 0.1 | none | 0.4 | 1 | 1,650 |
| acme | 0.5000#0.2000#commercial#none | commercial | 0.02 | 1,560 | 0.9 | 1,100 | 52 | 0.2 | 3,500 | 1,000 | 0.5 | Two-start 10 TPI ACME; 0.2 lead; higher efficiency | 0.1 | none | 0.4 | 2 | 1,650 |
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