A two-stage planetary gearbox, module 1, 20° pressure angle. Each stage has a 12T sun, three 24T planets on Ø5 pins on a Ø36 circle, and a 60T ring cut directly into a Ø80×50 housing. The stage-1 carrier drives the stage-2 sun for 36:1 total, with a NEMA 17 input flange and a Ø12 output shaft on a 6001 bearing in an end cover held by 4×M4.
| Total ratio | 36 : 1 |
|---|---|
| Stage ratio | 6 : 1 |
| Module / pressure angle | 1 / 20° |
| Centre distance | 18 mm |
| Output torque (est.) | about 13 Nm |
| Housing | Ø80 × 50 mm |
| Overall size | 80 × 80 × 99 mm |
| Parts | 27 |
| Material | Steel (S235) |
| Mass (calculated) | 2006.4 g |
| General tolerance | ± 0.1 mm (ISO 2768-m) |
| Process | machining |
| 1× | Deep groove ball bearing 6001 ISO 15 |
| 8× | Socket head cap screw M4x16 ISO 4762 |
| 01 | housing 80 × 80 × 50 mm · 850.9 g |
| 02 | input_flange 80 × 80 × 10 mm · 373.7 g |
| 03 | end_cover 80 × 80 × 10 mm · 347.8 g |
| 04 | sun_1 13.99 × 13.99 × 13.5 mm · 8.4 g |
| 05 | carrier_1_sun_2 48 × 48 × 19 mm · 66.4 g |
| 06 | carrier_2_output 48 × 48 × 50 mm · 101.3 g |
| 07 | planet_1_0 25.86 × 25.86 × 10 mm · 33.0 g |
| 08 | pin_1_0 5 × 5 × 15 mm · 2.3 g |
| 09 | planet_1_1 25.86 × 25.86 × 10 mm · 33.0 g |
| 10 | pin_1_1 5 × 5 × 15 mm · 2.3 g |
| 11 | planet_1_2 25.86 × 25.86 × 10 mm · 33.0 g |
| 12 | pin_1_2 5 × 5 × 15 mm · 2.3 g |
| 13 | planet_2_0 25.86 × 25.86 × 10 mm · 33.0 g |
| 14 | pin_2_0 5 × 5 × 15 mm · 2.3 g |
| 15 | planet_2_1 25.86 × 25.86 × 10 mm · 33.0 g |
| 16 | pin_2_1 5 × 5 × 15 mm · 2.3 g |
| 17 | planet_2_2 25.86 × 25.86 × 10 mm · 33.0 g |
| 18 | pin_2_2 5 × 5 × 15 mm · 2.3 g |
| 19 | bearing_6001 28 × 28 × 8 mm · 24.8 g |
| 20 | cover_bolt_0 7 × 7 × 20 mm · 2.6 g |
| 21 | cover_bolt_1 7 × 7 × 20 mm · 2.6 g |
| 22 | cover_bolt_2 7 × 7 × 20 mm · 2.6 g |
| 23 | cover_bolt_3 7 × 7 × 20 mm · 2.6 g |
| 24 | flange_bolt_0 7 × 7 × 20 mm · 2.6 g |
| 25 | flange_bolt_1 7 × 7 × 20 mm · 2.6 g |
| 26 | flange_bolt_2 7 × 7 × 20 mm · 2.6 g |
| 27 | flange_bolt_3 7 × 7 × 20 mm · 2.6 g |