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Chuck Jaws DOJ-DK12-315
Chuck Jaws DOJ-DK12-315 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-DK12-315
Description
DOJ Jaws Ø 315 mm for DK12 chucks — external gripping jaws. Distributed in Italy by Krollit — official Bernardo distributor since 2007.
Logistics
Original spare parts available with 3-5 working days shipping. Customer support available in Italian.
Technical specifications
technical specifications
Chuck size |
315 mm |
A |
130 mm |
B |
36 mm |
C |
91 mm |
d |
13.5 mm |
E |
13 mm |
F |
18 mm |
h |
86 mm |
G |
36 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 315 mm — what does DOJ mean and how do they differ from DIJ jaws?
DOJ (Direct Outer Jaw) indicates jaws for external gripping: the teeth grip from the outside diameter of the workpiece, clamping inwards. They are the standard jaws for clamping bars, shafts, cylinders and compact shaped workpieces. DIJ jaws do the opposite — internal gripping on hollow workpieces. The same machine can use both DIJ and DOJ depending on the workpiece, provided the chuck size is compatible.
DK12 series — compatibility with my chuck?
DK12 connection (12 DIN 6350 bolts). Verify the connection type of your chuck before purchase — DK11 and DK12 are not interchangeable. The diameter Ø 315 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 steel, cast iron, and raw aluminum — they grip forcefully without deforming but leave marks on finished parts. Soft jaws (mild steel) do not leave marks on pre-machined parts and are machined in situ for maximum concentricity. For finishing operations on pre-machined parts: soft jaws. For roughing and production on raw parts: hard jaws.
Delivery times?
Original spare parts available with 3-5 working days shipping. Customer support available in Italian.
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