2 Stage Planetary Gear Box - Free 3D Print Model

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HEXSPUR DESIGNS

Education>Engineering

IP Report

Print Profile(1)

All

P1S

P2S

H2D Pro

X1E

P1P

X1 Carbon

H2C

H2D

H2S

X2D

A2L

0.2mm layer, 5 walls, 100% infill

Designer

95.8 h

13 plates

Open in Bambu Studio

Boost

Released

Bill of Materials

List other parts

M5X25 SOCKET HEAD CAP SCREW x 10:
M5X160 SOCKET HEAD CAP SCREW x 8:
M5X40 SOCKET CSK HEAD x 6:
M3X20 SOCKET HEAD CAP SCREW x 8:
M3X8 SOCKET BUTTON HEAD x 8:
M5X10 GRUB SCREW FLAT POINT x 2:
M5 Hex Nut ANSI B18.2.4.1M x 22:
M8 Hex Nut ANSI B18.2.4.1M x 4:
Ø62 BASIC INTERNAL RETAINING RING x 2:
Ø40 BASIC EXTERNAL RETAINING RING x 3:
NEMA 23 MOTOR x 1:
W 61908-2Z (BALL BEARING) x 3:
61802-2Z (BALL BEARING) x 12:

Description

Heavy Duty 2-Stage Planetary Gearbox | 36:1 Reduction | 100 Kg Load Tested
This project presents a dual-stage high-torque planetary gearbox, fully engineered and manufactured using precision FDM technology.

Designed with structural strength priority and printed at 100% solid density in PETG, this gearbox is capable of rotating up to 100 Kg load under controlled conditions.

🎥 Full Working Video:
https://youtu.be/UQAriS6rcrk

⚙️ Gear Specification (Per Stage)

Module: 1
Ring Gear: 120 Teeth
Planet Gear: 48 Teeth
Sun Gear: 24 Teeth
Configuration: Ring Fixed, Sun Input, Carrier Output
Both stages identical

🔢 Gear Ratio Calculation

Single Stage Ratio:

GR = 1 + (Ring / Sun)
GR = 1 + (120 / 24)
GR = 6 : 1

Total for Two Stages:

6 × 6 = 36 : 1 Reduction

This provides significant torque multiplication suitable for heavy rotary applications.

🛠 Manufacturing Details

Printer: Bambu Lab P1S
Material: PETG
Infill: 100%
Motor Used: NEMA 24
Strength-focused print strategy

🏋 Performance

✔ Tested with 100 Kg rotational load
✔ Smooth torque transmission
✔ Compact dual-stage design
✔ Suitable for industrial prototype applications

gearbox

planetary gearbox

Comment & Rating (1)

License

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