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SHANK BUTTON CLAMP COMPLETE 373
Original price was: ₹2,000.00.₹1,300.00Current price is: ₹1,300.00.
Product Description
11304001 Crank for Jack F4
This crank connects the main drive shaft to the needle bar mechanism, converting rotary motor motion into the up-down needle movement that forms each stitch.
Fits
- Jack F4 industrial single needle sewing machine
Why Replace It
A worn crank introduces play into the needle bar drive, causing knocking noise, uneven needle timing, or skipped stitches at higher speeds. Replacing it restores smooth, precise needle drive.
FAQ
My machine makes a knocking noise at speed — could this be the cause?
Yes, a worn crank is a common source of knocking or clicking noise, especially noticeable when running the machine at higher RPM.
