42 Stepper Motor Helical Planetary Gearbox 6:1

Compact Design

Miniature planetary gearbox for 42 stepper motor

Gear ratio 6:1

Module 0.6M, sun gear 15T, internal gear 75T, helix angle 20°

Outer diameter only 58mm Length 34mm

Easy to Expand

Equipped with a 6-hole end face flange, various actuators (grippers/suction cups/electromagnets, etc.) can be freely added

Design Data

The zip package includes BOM table + purchase link + STEP assembly drawings

Safety Design

The motor output shaft gear is designed as a consumable part to protect the planetary gear and internal gear safety. Once the torque is overloaded, this gear will automatically slip and wear. If possible, please print several more, and replacement is convenient

Application Scenarios

Used for the J6 joint at the end of the robotic arm, in a light load environment

Material Properties

When the printing material is PLA-FC, the motor current should be small and stable, and excessive heat generation will cause deformation of the gearbox structure

When the printing material is ABS, the interlayer bonding strength will be reduced, and the installation gap of the nut hex hole needs to be increased (process---global---quality---XY hole size compensation---+0.15)

Simple Standard Parts

1 x 6807 bearing

3 x inner 4 outer 6 length 4 shaft sleeves (self-lubricating)

3 x outer 4 length 20 cylindrical pins

6 x inner 4 outer 10 nylon washers (self-lubricating)

3 x M3 hex nuts

3 x M3 socket head cap screws

Printing Parameters

Material PLA-FC or ABS

Layer height 0.2

Outer wall 4 layers

Sparse infill 40~60%

XY hole size compensation initial default +0.05 (adjust according to actual situation)

XY outer size compensation initial default -0.05 (adjust according to actual situation)