Gearbox & Speed Reduction

Assembly

No photo yet. Seen one of these? Suggest a photo.

Worm gear or helical belt drive reducing ≈3000 rpm motor output to 1000–1500 rpm at millstone contact, ≈5:1 ratio.

Direct parts	5
Total parts	6
Used in	1 assembly
Class	Assembly

Report a problem with this BOM

Worm gear or helical belt drive reducing ≈3000 rpm motor output to 1000–1500 rpm at millstone contact, ≈5:1 ratio. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Gearbox & Speed Reduction parts and their functions

5 top-level parts · 6 parts in total · full bill of materials below

Gearbox & Speed Reduction parts diagram: 1 worm drive shaft, 2 worm wheel gear, 3 gearbox housing, 4 output shaft, 5 ball bearing. 6 parts in 5 top-level items. — Gearbox & Speed Reduction parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Worm Drive Shaft	1×	Hardened steel worm screw meshing with bronze worm-wheel gear
2	Worm Wheel Gear	1×	Phosphor bronze or ductile-iron worm-wheel, 50–80 mm OD
3	Gearbox Housing	1×	Cast aluminum worm-gear housing with oil lubrication, sealed bearings
4	Output Shaft	1×	Hardened steel output shaft running at reduced speed, keyed coupling to millstone
5	Ball Bearing	2×	Deep-groove 6205-class bearing supporting output shaft front and back

3D model

No 3D model yet. Have a CAD file of this? Add a 3D model. STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).

Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour

product / assembly shared across products atomic part related product

Tap an assembly to expand/collapse · tap a part to open it · use “Open page” for any node · drag to pan, scroll to zoom.

Bill of materials for Gearbox & Speed Reduction

5 top-level lines · 5 rows shown · 6 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Worm Drive Shaft	electric-grain-mill-worm-shaft	1×	1	·	part
2	Worm Wheel Gear	electric-grain-mill-worm-wheel	1×	1	·	part
3	Gearbox Housing	electric-grain-mill-gearbox-housing	1×	1	·	part
4	Output Shaft	electric-grain-mill-output-shaft	1×	1	·	part
5	Ball Bearing	ball-bearing	2×	2	·	part

Something wrong in this list? Report a problem with this BOM.

Where the gearbox & speed reduction is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Small Kitchen Appliances 1 Electric Grain Mill

Used in 1 assembly

Electric Grain Mill

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $1–$300. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇮🇳Sona Comstar sonacomstar.com ↗	Gurugram, IN	EV driveline & motors	1,000 pcs	8–12 wks
🇨🇳Zhejiang Shuanghuan shdrive.cn ↗	Yuhuan, CN	Gears & driveline	1,000 pcs	8–12 wks
🇮🇳Bharat Gears bharatgears.com ↗	Mumbai, IN	Automotive gears	1,000 pcs	8–12 wks
🇮🇳ZF India zf.com ↗	Pune, IN	Driveline & chassis	1,000 pcs	8–12 wks
🇨🇳Hangzhou Advance advancegroup.cn ↗	Hangzhou, CN	Gearboxes	1,000 pcs	8–12 wks