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Hand-Crank Unit

Assembly

Synchronous twin hand cranks on a sealed bottom bracket at chest height, with grips the rider turns to drive the chain; arranged so both arms push and pull together. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Hand-Crank Unit parts and their functions

5 top-level parts · 14 parts in total · full bill of materials below
Hand-Crank Unit parts diagram: 1 hand crank arm, 2 crank spindle, 3 hand grip, 4 crank bottom bracket, 5 crank chainring. 14 parts in 5 top-level items.
Hand-Crank 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 Hand Crank Arm 2× Hand crank arms
2 Crank Spindle 1× Crank axle
3 Hand Grip 3 parts 2× Rotating grip handles
4 Crank Bottom Bracket 2 parts 1× Sealed crank bearing unit
5 Crank Chainring 1× Drive chainring

3D model

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Build & assembly graph

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Bill of materials for Hand-Crank Unit

5 top-level lines · 10 rows shown · 14 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Hand Crank Arm hand-cycle-crank-arm 2× 2 · part
2 Crank Spindle hand-cycle-crank-spindle 1× 1 · part
3 Hand Grip 3 parts hand-cycle-hand-grip 2× 2 3 assembly
3.1 Ball Bearing ball-bearing 1× 2 · part
3.2 Grip Sleeve hand-cycle-grip-sleeve 1× 2 · part
3.3 Hand Cuff Strap hand-cycle-grip-cuff 1× 2 · part
4 Crank Bottom Bracket 2 parts hand-cycle-crank-bb 1× 1 4 assembly
4.1 Ball Bearing ball-bearing 2× 2 · part
4.2 Crank BB Cup hand-cycle-bb-cup 2× 2 · part
5 Crank Chainring hand-cycle-chainring 1× 1 · part

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Where the hand-crank 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