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Discussion History

Rotary Hook and Bobbin

Assembly

The rotary hook that catches the needle loop and passes it around the bobbin to set each lockstitch. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Rotary Hook and Bobbin parts and their functions

6 top-level parts · 7 parts in total · full bill of materials below
Rotary Hook and Bobbin parts diagram: 1 rotary hook, 2 bobbin case, 3 bobbin, 4 hook shaft, 5 helical gear pair, 6 ball bearing. 7 parts in 6 top-level items.
Rotary Hook and Bobbin parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Rotary Hook 1× Rotary hook
2 Bobbin Case 1× Bobbin case
3 Bobbin 1× Bobbin
4 Hook Shaft 1× Hook drive shaft
5 Helical Gear Pair 1× Main shaft to hook timing gears
6 Ball Bearing 2× Hook shaft bearings

3D model

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Build & assembly graph

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Bill of materials for Rotary Hook and Bobbin

6 top-level lines · 6 rows shown · 7 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Rotary Hook buttonhole-sewing-machine-rotary-hook 1× 1 · part
2 Bobbin Case buttonhole-sewing-machine-bobbin-case 1× 1 · part
3 Bobbin buttonhole-sewing-machine-bobbin 1× 1 · part
4 Hook Shaft buttonhole-sewing-machine-hook-shaft 1× 1 · part
5 Helical Gear Pair gear-pair 1× 1 · part
6 Ball Bearing ball-bearing 2× 2 · part

Where the rotary hook and bobbin is used

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

Used in 1 assembly

Buttonhole Sewing Machine

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 (Singapore)
flex.com ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks
🇮🇳Dixon Technologies
dixoninfo.com ↗ 		Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
🇨🇳BYD Electronics
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