Trimmer Rotary Hook – Jack | Industrial Sewing Machine Hook Assembly (Under Trimmer Compatible)

• Rotary hook for automatic thread trimmer systems

• Compatible with Jack, Juki, Brother & other industrial brands

• Designed for high-speed lockstitch operations

• Ensures smooth stitch formation and thread control

• Durable construction for continuous commercial use

The Trimmer Rotary Hook – Jack (REF. 809481) is a precision-engineered replacement component designed for industrial sewing machines equipped with automatic thread-trimming systems. Built for high-speed production environments, this rotary hook ensures smooth stitch formation, stable thread control, and reliable trimming performance.

This hook is widely used across Jack and other major industrial sewing machine brands that operate with Japanese-standard rotary hook systems for under-trimmer machines. Its durable construction supports continuous operation in garment factories, upholstery workshops, and textile production lines.

⚠️ Important: This rotary hook is designed exclusively for machines with automatic thread trimmers and is not compatible with standard non-trimmer machines.

Compatible Systems & Machines

Jack Sewing Machine – Industrial Sewing Machines (Automatic Thread Trimmer)

Directly compatible with the following Jack models:

• JACK A2 / A3 / A4 / A5E-A – Single needle lockstitch machines

• JACK JK-58450 / JK-5845-5 – Double needle machines

• JACK JK-5872-3

• JACK 1130400500 – Trimmer lever connecting rod system

Juki – Under-Trimmer Machines

Designed as a replacement rotary hook for Juki machines equipped with under-trimmers:

• Juki DDL-5550 / 8500 / 8700 (with under-trimmer)

• Juki LH-3178-7 / LH-3188-7 – Double needle

• Juki LU-1509N-7 / LU-1510N-7 / LU-1560N-7 – Walking foot

• Juki LU-2210N-7 / LU-2216N-7 – Durkopp Adler–style systems

Brother Industries Machines

• Brother DB1-B755

• Brother LT2-B845-403 / LT2-B845-405 / T-8450B – Double needle

• Brother B891 / B892

Other Compatible Industrial Brands

Compatible with machines using standard Japanese industrial rotary hook systems with automatic trimmers, including:

• Siruba: T828-45-H-U, T828-72-048-H, UF918-X2

• Sunstar: KM-790-7, KM-750BL, KM-1060BL

• Zoje: 845-D3, ZJ872-5

• Typical: GC6845HD3, GC6872

• Durkopp Adler: 467, 767, 867

Key Compatibility Note (Very Important)

⚠️ This rotary hook is ONLY compatible with machines equipped with automatic thread trimmers (under-trimmer systems).
❌ It will not work on standard industrial sewing machines without trimming mechanisms.

Always verify:

• Your machine model

• Hook system type

• Existing part number

Technical Specifications

• Component Type: Trimmer Rotary Hook

• Hook System: Japanese-standard industrial rotary hook (under-trimmer)

• Application: Industrial lockstitch sewing machines with automatic trimming

• Use Case: Garment manufacturing, upholstery, textile production