The above graph demonstrates the inertia reduction achieved by adding 3 different example ratios to a servo motor. Teknic currently offers gearboxes with ratios from 3:1 - 64:1 for online purchase. Contact an engineer to find the right gearbox for your machine.
The dynamic torque-speed curve above demonstrates the dramatic output torque increase achieved by adding a 3:1 precision gearbox to a NEMA23 ClearPath servo motor. As you can see upon clicking the button above, the gearbox transmits several times the motor's native torque.
The above graphic demonstrates the theoretical increased system resolution achieved by adding a 10:1 gearbox to a motor (ignoring gearbox mechanical backlash).
Another hypothetical example, where we do account for gearbox backlash, is to analyze a belt stage being directly driven by a half-stepping (400 µsteps/rev) stepper motor. If the driven pulley is 4 inches in diameter, the best-case theoretical linear resolution would be 0.031 inches/step (π x D / 400). Incorporating a 7:1 planetary gearbox (and factoring for 5 arc minutes of internal gearbox backlash) would improve the system resolution to ~0.008 inches/step—a roughly 4x improvement.
| Input / Output Frames |
NEMA17 / 40mm NEMA23 / 60mm NEMA34 / 80mm NEMA56 / 115mm NEMA143 / 115mm |
| Ratios (Stages) | 3:1 (single-stage) - 64:1 (two-stage) |
| Shaft Angles |
In-line Right-angle |
| Input Bores | 5mm - 7/8in |
| Output Flanges |
Square Round |
