LUXXO · SHARED DESIGN · READ ONLY

4-Slot Geneva Drive Assembly v1

A 4-slot Geneva indexing drive with 50 mm centre distance: Ø80 driver with Ø6 pin at R35.36 and an R31 convex locking hub, a Ø72 four-slot Geneva wheel with R31 concave locking arcs, both on Ø10 shafts in 6000 bearings seated in a 140×80×10 base plate.

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

Each shaft has only one 6000 bearing, so the discs are overhung. Expect tilt and wear; a second bearing or a cover-plate bearing is recommended for real duty.
No axial retention is modelled (no circlips or collars). Add spacers or circlips to hold the 2 mm and 0.5 mm gaps.
Exact R31/R31 locking arcs give zero backlash. Machine the hub to -0.05 or the concave arcs to +0.05 to avoid binding.
The M4 set screw in an 8 mm disc leaves about 2.3 mm wall either side of the tapped hole. Prefer a keyed hub for torques above about 3 N·m.

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Specification

Slots	4
Centre distance	50 mm
Crank (pin) radius	35.36 mm
Index angle / dwell angle (driver)	90° / 270°
Output step	90° per driver revolution
Slot	6.2 wide, 22 deep, full-round end
Material	S235
Overall size	140 × 80 × 30 mm
Parts	8
Material	Steel (S235)
Mass (calculated)	1416.4 g
General tolerance	± 0.2 mm (ISO 2768-m)
Process	machining

Standard parts · purchasable

2×	Deep groove ball bearing 6000 ISO 15

Parts list

01	base_plate 140 × 80 × 10 mm · 795.5 g
02	driver_wheel 80 × 80 × 16 mm · 459.0 g
03	drive_pin 6 × 6 × 10 mm · 2.2 g
04	geneva_wheel 56.7 × 56.7 × 8 mm · 82.7 g
05	driver_shaft 10 × 10 × 26 mm · 16.0 g
06	geneva_shaft 10 × 10 × 26.5 mm · 16.3 g
07	bearing_driver 26 × 26 × 8 mm · 22.3 g
08	bearing_geneva 26 × 26 × 8 mm · 22.3 g