Design a production-ready
gearbox in minutes.
Pick a reduction. GearSmith solves the tooth counts, checks assembly and interference constraints, simulates the running gear train in 3D, and exports every part as STEP & STL — with a costed BOM and step-by-step assembly instructions.
⚙ Three architectures
Planetary (3–100:1 with auto two-stage compounding), cycloidal (6–60:1, balanced twin discs) and harmonic (30–160:1) drives — real involute profiles, hypotrochoid discs and elliptical wave generators.
▦ Feasibility solver
Every listed design satisfies the ring–sun–planet identity, the N-planet assembly condition, neighbor-clearance and minimum tooth-count rules. No impossible gearboxes.
▶ Live simulation
Spin the input and watch correct mesh kinematics — carrier ratios, cycloidal wobble, flexspline wave deformation — with exploded view and speed control.
⬇ Manufacturing pack
One zip, organized for the shop: print-compensated STLs with a print guide, nominal STEP solids with a machining guide, motor mount for 10 catalog motors or your own, costed BOM and assembly steps written for your exact design.