How to Select the Correct Upper and Lower Knives for Your Specific Loom Model
Introduction One of the most common questions our sales team receives is: “Which knife fits my machine?” With model numbers like MICS-QD-25, MICS-D-11B-1, and MICS-D-11-1, confusion is understandable. However, using the wrong blade is not just a waste of money; it can damage your cutter assembly. Hangzhou Zhenbao Trading Co., Ltd. is here to demystify the matching process.
Understanding the Models
MICS-QD-25 (Upper Knife): This is a specialized Upper Knife designed for heavy-duty cutting.
Features: It has a reinforced spine to prevent deflection when cutting thick denier yarns (like denim or industrial canvas).
Pairing: It must be paired with a compatible lower knife that matches its cutting arc.
MICS-D-11-1 vs. MICS-D-11B-1 (Lower Knives): While they look similar, the suffix matters.
MICS-D-11-1: Often used in standard setups.
MICS-D-11B-1: Typically features a modified mounting hole pattern or a carbide inlay for extended life.
Rule of Thumb: Always check the part number stamped on your old blade. If you cannot read it, send a photo and dimensions to Hangzhou Zhenbao Trading. We can identify it visually.
The Consequences of Mismatching
Gap Issues: If you use a MICS-QD-25 upper with an incompatible lower knife, the “scissor gap” may be uneven. This causes the blades to grind against each other, dulling the edge instantly.
Mounting Stress: Forcing a blade into a holder that isn’t designed for it can strip the threads or crack the Relay Socket mounting points nearby due to vibration.
Installation Advice When installing these specific models:
Always replace the Stainless Steel Extension Spring that provides tension to the cutter arm. Old springs lose their “K-factor” (stiffness), leading to weak cutting pressure even with new blades.
Use a Brown Mold Spring (14735) if your setup requires higher tension for synthetic yarns.
Conclusion Precision is the language of textile engineering. Ensure you are “speaking” it correctly by ordering matched sets of MICS-QD-25 and MICS-D-11 blades from Hangzhou Zhenbao Trading Co., Ltd. We cross-reference every order to ensure compatibility, giving you peace of mind and perfect cuts.