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Hirose Rotary Hook HSH-7.94AO – Industrial Lockstitch Sewing Machine Hook

Hirose Rotary Hook HSH-7.94AO – Industrial Lockstitch Sewing Machine Hook

$48.60 SGD - $48.60 SGD
$48.60 SGD
$48.60 SGD - $48.60 SGD
$48.60 SGD

The Hirose Rotary Hook HSH-7.94AO is a premium-quality rotary hook designed for heavy-duty industrial lockstitch sewing machines. Manufactured with high precision, this rotary hook provides smooth thread handling, consistent stitch formation, and excellent durability for continuous factory production. It features a full automatic open-type lubrication system that minimizes wear and ensures stable high-speed operation.

Key Features

  • Original Hirose HSH-7.94AO rotary hook.
  • Designed for heavy-duty industrial lockstitch sewing machines.
  • Full automatic open-type lubrication system.
  • Provides smooth, consistent stitch formation.
  • High wear resistance for long production hours.
  • Precision engineered for reliable high-speed sewing performance.

Compatible Sewing Machine Models

This rotary hook is compatible with selected industrial sewing machines including:

  • Brother: DB-B755-5
  • Janome: DB-J705, DB-J706
  • Juki: DDL-8700
  • Singer: 400W, 402W, 451K
  • Siruba: L818F-H1, L819-X1, L918-H1A
  • Mitsubishi: LS2-1130-HOB, LS2-130-HOB
  • Unicorn: DB2-H311, H510H, H515H
  • Baoma: GC158-B, HG128-B
  • Dadli: DB2-B111-5
  • Flying Man: GC9002H
  • Typical: GC6-8
  • Wanping: GC203

Common Failure Symptoms

  • Skipped Stitches: Caused by worn or damaged hook points.
  • Thread Breakage: Burrs or scratches on the hook interfere with thread movement.
  • Bird Nesting: Hook timing issues or excessive hook wear may cause thread jams beneath the fabric.
  • Noisy Operation: Insufficient lubrication or worn hook components can produce abnormal noise.
  • Poor Stitch Quality: A damaged rotary hook may create inconsistent lockstitches or loose thread loops.

Replacement Procedure

  1. Disconnect Power: Switch off and unplug the sewing machine.
  2. Remove Needle Plate: Remove the presser foot, needle, bobbin, and needle plate.
  3. Access the Hook Assembly: Open the hook compartment and remove the existing rotary hook.
  4. Clean the Area: Remove lint, dust, and old oil from the hook race using a brush.
  5. Install New Hook: Fit the Hirose HSH-7.94AO rotary hook into the hook race correctly.
  6. Check Hook Timing: Ensure the hook timing aligns properly with the needle before tightening components.
  7. Lubricate: Apply the recommended sewing machine oil before operation.
  8. Test Sew: Reassemble the machine and perform a test stitch on scrap fabric.

Maintenance Tips

  • Clean the hook race daily to remove lint and thread residue.
  • Lubricate regularly using the recommended industrial sewing machine oil.
  • Inspect the hook point periodically for nicks or scratches.
  • Replace damaged needles immediately to prevent hook damage.
  • Verify hook timing after any needle strike or major machine servicing.

Package Includes

  • 1 × Hirose Rotary Hook HSH-7.94AO

Why Choose the Hirose HSH-7.94AO?

The Hirose HSH-7.94AO is trusted by garment factories and industrial sewing professionals for its exceptional precision, durability, and consistent stitch quality. It is an excellent replacement hook for maintaining maximum sewing performance and minimizing machine downtime.

Need Help Confirming Compatibility?

If you are unsure whether this rotary hook is suitable for your sewing machine, please contact us with your machine brand and model number before ordering.