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Main Drive Unit

Assembly

One of the motor and gearbox units arranged around the rear of the cutterhead support. Each pairs a main drive motor with a planetary reducer and an output pinion, with a torque-limiting coupling between them. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Main Drive Unit parts and their functions

4 top-level parts · 4 parts in total · full bill of materials below
Main Drive Unit parts diagram: 1 main drive motor, 2 torque-limiting coupling, 3 planetary gear reducer, 4 drive pinion. 4 parts in 4 top-level items.
Main Drive Unit parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Main Drive Motor 1× Supplies the power, at a speed set by its frequency converter
2 Torque-Limiting Coupling 1× Slips if the cutterhead jams, protecting the gears
3 Planetary Gear Reducer 1× Reduces motor speed and multiplies torque
4 Drive Pinion 1× Drives the bull gear

3D model

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Build & assembly graph

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Bill of materials for Main Drive Unit

4 top-level lines · 4 rows shown · 4 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Main Drive Motor main-beam-tbm-drive-motor 1× 1 · part
2 Torque-Limiting Coupling main-beam-tbm-torque-limiter 1× 1 · part
3 Planetary Gear Reducer main-beam-tbm-gear-reducer 1× 1 · part
4 Drive Pinion main-beam-tbm-drive-pinion 1× 1 · part

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Where the main drive unit is used

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

Used in 1 assembly

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 $0.50–$100. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Foxconn
foxconn.com ↗
Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
flex.com ↗ Singapore Electronics contract mfg 1,000 pcs 6–10 wks
dixoninfo.com ↗ Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
bydelectronic.com ↗ Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Venture Corp
venture.com.sg ↗
Singapore Electronics contract mfg 1,000 pcs 6–10 wks