Shark Jaws have serrated inner and outer jaw surfaces. These extended jaws provide an aggressive hold. They hold cylinder spigots much more safely than standard jaws. They are much easier and provide vastly better grip than traditional jaws used to turn long workpieces.
The sizes indicated on the drawing are when the jaws form a perfect circle. VM90 and VM100 chucks provide approx. 38mm of expansion beyond these specified sizes.
See dimension table for part numbers.
Shark Jaws VM90/100
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Jaw Size A B C Part No. Shark 48mm 35mm 48mm 27mm V00653 Shark 55mm 42mm 55mm 33mm V00654 Shark 74mm 60mm 74mm 33mm V00655 Shark 88mm 74mm 88mm 33mm V00656
Reviews
When beginning woodturning a few years ago, I tended to buy whatever lathe accessories were cheapest. I quickly realized that was folly. Vicmarc is now my first choice. Every Vicmarc chuck and accessory is flawless.