⚙ GEARBOX DEFINITION

Gearbox builder

Type

Drive direction

Target reduction6:1

Module (tooth size)

Planets3ct

Motor

Motor

Motor shaft ø5mm

Planet axle ø3mm

Face width8mm

Mesh & manufacturing

Pressure angle

Design backlash0.08mm

Tight tolerance (press fits)0.1mm on ø

Loose tolerance (running fits)0.3mm on ø

sockets & seats use tight · spinning fits use loose · printed axles = ø − (loose − tight) so they never jam · STEPs stay nominal

Material (rating)

Planet axles

integrated = axles printed into the carrier · socketed = separate axles, tight-fit sockets · dowels = steel pins

Ring gear

Output

Output shaft / connector

Feasible designs

By Harbegold LLCPrivacy · Terms

Site by Harbe Studio

DRAG · SCROLL TO ZOOM · RIGHT-DRAG TO PAN

21600 rpm = 360.0 r/s⧉ EXPLODED VIEW

◎ OUTPUT

Ratio6.00:1

Directionsame as input

Input torquemN·m

Input speedrpm

Output torque0.62 N·m

Output speed3600 rpm

Rated · PETG5.6 N·m

Utilization11%

η = 0.97 · output same as input · rating: Lewis bending, 20° full depth — 11T sun tooth bending

Parts & bearings

checkboxes show/hide each part in the 3D view

Sun gear (11T)

m1.5 · 11T · bore ø5

Input shaft ø5

RS-775 brushed DC's own shaft — reference only, not printed

Planet 1 (22T)

bearing MR63 (3×6×2.5) on ø3 axle

Planet 2 (22T)

bearing MR63 (3×6×2.5) on ø3 axle

Planet 3 (22T)

bearing MR63 (3×6×2.5) on ø3 axle

Ring gear (55T internal)

m1.5 · 55T · ø94 · 2× anti-rotation flats

Carrier pocket ring ø94

smooth bore ø81 — the output carrier runs inside it

Motor-side spacer ring ø94

3 mm register ring between input ring and base plate

Carrier plate (3 × ø3)

ø60 · 3× integral ø2.80 axles · output boss ø11

Gearbox base ø100 (motor side)

RS-775 brushed DC mount: 2× M4 @ 29 · register ø17.5

Gearbox cap (9× M3 socket head)

output bore ø12 printed bushing · heads sunk flush

1× RS-775 brushed DC

2× M4 @ 29 · register ø17.5 · ø5 shaft

catalog

2× M4×8 (motor)

motor to base plate

catalog

3× Bearing MR63

MR63 (3×6×2.5)

catalog

9× M3×12 socket head

cap + base fastening

catalog

One zip, organized: 3d-printing/ (STLs pre-compensated — tight 0.1 / loose 0.3 mm + print guide), machining/ (nominal STEP solids + machining guide), plus a costed BOM and assembly instructions written for this exact design and motor.

Manufacturing

STLs carry your printer compensation; STEPs are nominal. STEP files are faceted BREP — sew to native solids in Fusion 360, FreeCAD or SolidWorks. Critical fits and first-article checks are in the pack guides.