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Chuck Jaws DOJ-DK11-630
Chuck Jaws DOJ-DK11-630 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
At Krollit, we guarantee a safe and reliable shipping process. Orders are handled with the utmost care and traceability until delivery.
For international shipments, please send your request via the dedicated contact form.
Upon delivery, always sign the delivery note with the words “subject to inspection” to allow for proper handling of any irregularities or discrepancies in the product.
Our goal is to ensure you receive prompt service and a worry-free shopping experience.
Chuck Jaws DOJ-DK11-630
Description
DOJ Jaws Ø 630 mm for DK11 chucks — external gripping jaws. Krollit has been an official Bernardo distributor in Italy since 2007.
Logistics
Original spare parts available with 3–5 working days shipping. Customer support available in Italian.
Technical specifications
Technical specifications
Chuck size |
630 mm |
A |
225 mm |
B |
50 mm |
C |
117 mm |
d |
18 mm |
E |
18 mm |
F |
28 mm |
h |
149 mm |
G |
66 mm |
Warranty
Warranty terms and support procedures are available on the dedicated Krollit page.
View Krollit warranty termsFAQ / Frequently asked questions
Frequently Asked Questions
DOJ Jaws Ø 630 mm — what does DOJ mean and how do they differ from DIJ jaws?
DOJ (Direct Outer Jaw) indicates external gripping jaws: the teeth bite from the outside diameter of the workpiece, clamping inwards. These are the standard jaws for clamping bars, shafts, cylinders, and compact workpieces. DIJ jaws do the opposite — internal gripping on hollow workpieces. The same machine can use both DIJ and DOJ depending on the workpiece, as long as the chuck size is compatible.
DK11 series — compatibility with my chuck?
DK11 attachment (11 DIN 6350 bolts). Verify the attachment type of your chuck before purchasing — DK11 and DK12 are not interchangeable. The diameter Ø 630 mm must match the chuck size. Customer support available in Italian.
Hard DOJ jaws vs soft jaws — when to choose one over the other?
Hard DOJ jaws (hardened) are for general use on raw steel, cast iron, and aluminum — they clamp firmly without deforming but leave marks on finished workpieces. Soft jaws (mild steel) do not leave marks on already machined workpieces and are machined in situ for maximum concentricity. For finishing operations on already machined workpieces: soft jaws. For roughing and production on raw workpieces: hard jaws.
Delivery times?
Original spare parts available with 3–5 working days shipping. Customer support available in Italian.
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