Motor Drive Unit

Assembly

Stator Winding of a BLDC Motor.jpg · Commons ↗ Report photo

Two stepper motors driving the worms through toothed-belt reductions, microstepped for smooth sidereal-rate motion.

Direct parts	5
Total parts	10
Class	Assembly

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Two stepper motors driving the worms through toothed-belt reductions, microstepped for smooth sidereal-rate motion. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Motor Drive Unit parts and their functions

5 top-level parts · 10 parts in total · full bill of materials below

Motor Drive Unit parts diagram: 1 stepper motor, 2 drive belt, 3 pulley set, 4 encoder, 5 motor cover. 10 parts in 5 top-level items. — Motor Drive Unit 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	Stepper Motor	2×	RA and DEC stepper motors
2	Drive Belt	2×	Toothed reduction belts
3	Pulley Set	2×	Aluminium toothed pulleys giving a 3–10:1 belt reduction between motor and worm.
4	Encoder	2×	Axis position encoders
5	Motor Cover	2×	Cast cover shielding motor and belt from dew and snags.

3D model

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Build & assembly graph

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Bill of materials for Motor Drive Unit

5 top-level lines · 5 rows shown · 10 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Stepper Motor	equatorial-telescope-mount-stepper	2×	2	·	part
2	Drive Belt	drive-belt	2×	2	·	part
3	Pulley Set	equatorial-telescope-mount-pulley-set	2×	2	·	part
4	Encoder	encoder	2×	2	·	part
5	Motor Cover	equatorial-telescope-mount-motor-cover	2×	2	·	part

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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 $2–$500. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Inovance inovance.com ↗	Shenzhen, CN	Drives & motion control	500 units	10–14 wks
🇮🇳Sona Comstar sonacomstar.com ↗	Gurugram, IN	EV driveline & motors	500 units	10–14 wks
🇨🇳Broad-Ocean broad-ocean.com ↗	Zhongshan, CN	Electric motors	500 units	10–14 wks
🇸🇬Nidec (Singapore) nidec.com ↗	Singapore	Motors, regional ops	500 units	10–14 wks
🇮🇳Bosch India bosch.in ↗	Bengaluru, IN	Automotive components	500 units	10–14 wks