LUXXO · SHARED DESIGN · READ ONLY

11:1 Cycloidal Speed Reducer v1

A two-disc 11:1 cycloidal reducer. An input shaft with two eccentric lobes 180° apart drives two epitrochoid discs against 12 ring pins on Ø80 inside a Ø110×30 housing. The disc rotation is taken off by 6 pins in an output flange that runs in a 6806 bearing in the front cover.

Files

STEP · AP214Exact solids for CAD/CAM STLMesh for 3D printing Drawing PDFA3, sections, hole & weld tables DXF flat patternsLaser / plasma cutting, zip

Flagged by the engineer

6802 and 6806 are not in the standard library list. If std does not provide them they are modelled as plain rings of the correct size and must be bought as ISO 15 thin-section bearings.
Press depth of the output pins (1 mm) and ring pins (0.5 mm) is very short. Longer pins or blind holes in the flange and back wall are recommended for production.
Wall between the M4 tapped holes and the pin grooves is only about 3.3 mm.
Hardened pins and discs (e.g. 100Cr6, 58-62 HRC) are needed for wear life. S235 is suitable only for a prototype or demonstrator.
The input shaft is supported by a single 6000 bearing; the eccentric end is overhung. A small pilot bearing in the output flange would improve stiffness.

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Specification

Reduction ratio	11 : 1 (output reversed)
Ring pins	12 × Ø6 on Ø80
Eccentricity	1.5 mm
Discs	2 × 5 mm, 11 lobes, 180° out of phase
Output pins	6 × Ø6 on Ø50
Housing	Ø110 × 30 + cover Ø110 × 8
Estimated output torque	≈ 17 Nm at 136 rpm
Overall size	110 × 110 × 83 mm
Parts	34
Material	Steel (S235)
Mass (calculated)	2582.1 g
General tolerance	± 0.2 mm (ISO 2768-m)
Process	turning

Standard parts · purchasable

1×	Deep groove ball bearing 6000 ISO 15
6×	Socket head cap screw M4x16 ISO 4762

Parts list

01	housing 110 × 110 × 30 mm · 1348.3 g
02	front_cover 110 × 110 × 8 mm · 507.6 g
03	input_shaft 18 × 15 × 60 mm · 46.2 g
04	cyclo_disc_1 75.85 × 76.42 × 5 mm · 137.9 g
05	cyclo_disc_2 75.85 × 76.42 × 5 mm · 137.9 g
06	output_flange 60 × 60 × 23.5 mm · 259.2 g
07	ring_pin_0 6 × 6 × 12 mm · 2.7 g
08	ring_pin_1 6 × 6 × 12 mm · 2.7 g
09	ring_pin_2 6 × 6 × 12 mm · 2.7 g
10	ring_pin_3 6 × 6 × 12 mm · 2.7 g
11	ring_pin_4 6 × 6 × 12 mm · 2.7 g
12	ring_pin_5 6 × 6 × 12 mm · 2.7 g
13	ring_pin_6 6 × 6 × 12 mm · 2.7 g
14	ring_pin_7 6 × 6 × 12 mm · 2.7 g
15	ring_pin_8 6 × 6 × 12 mm · 2.7 g
16	ring_pin_9 6 × 6 × 12 mm · 2.7 g
17	ring_pin_10 6 × 6 × 12 mm · 2.7 g
18	ring_pin_11 6 × 6 × 12 mm · 2.7 g
19	output_pin_0 6 × 6 × 12 mm · 2.7 g
20	output_pin_1 6 × 6 × 12 mm · 2.7 g
21	output_pin_2 6 × 6 × 12 mm · 2.7 g
22	output_pin_3 6 × 6 × 12 mm · 2.7 g
23	output_pin_4 6 × 6 × 12 mm · 2.7 g
24	output_pin_5 6 × 6 × 12 mm · 2.7 g
25	bearing_6000_input 26 × 26 × 8 mm · 22.3 g
26	bearing_6802_lobe1 24 × 24 × 5 mm · 10.8 g
27	bearing_6802_lobe2 24 × 24 × 5 mm · 10.8 g
28	bearing_6806_output 42 × 42 × 7 mm · 37.3 g
29	cover_screw_0 7 × 7 × 20 mm · 2.6 g
30	cover_screw_1 7 × 7 × 20 mm · 2.6 g
31	cover_screw_2 7 × 7 × 20 mm · 2.6 g
32	cover_screw_3 7 × 7 × 20 mm · 2.6 g
33	cover_screw_4 7 × 7 × 20 mm · 2.6 g
34	cover_screw_5 7 × 7 × 20 mm · 2.6 g