This promotion is not valid on discounted products or on bundled offers.
DTJ-DK12-315 reversible jaws
DTJ-DK12-315 reversible jaws is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
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.
Description
Reversible top jaws Ø 315 mm for DIN 6350 12-bolt chucks. In the Krollit catalog since 2007 as an official Bernardo distributor.
Logistics
Original spare parts available with 3–5 business day shipping. Customer support in Italian available.
Technical specifications
Technical Specifications
Chuck size |
315 mm |
L |
118 mm |
B |
42 mm |
h |
61 mm |
h |
17.5 mm |
A |
19.04 mm |
B |
12.71 mm |
E |
31.75 mm |
T |
3 mm |
t1 |
4 mm |
z-d |
2-13 |
Warranty
Warranty terms and support procedures are available on the dedicated Krollit page.
View Krollit warranty termsFAQ / Frequently asked questions
Frequently Asked Questions
Reversible top jaws Ø 315 mm — what do "top" and "reversible" mean?
"Top" indicates that the jaw is composed of two parts: the base body (hard, in hardened steel) which moves in the chuck's guides, and the top insert (the actual jaw, in soft or hardened steel) screwed onto the base body. The inserts can be replaced separately when worn without changing the base body. "Reversible" indicates that the same insert can be mounted in two opposite orientations — for internal gripping or external gripping — without changing the jaw.
For Ø 315 mm — what is the clamping diameter range for these jaws?
Reversible top jaws for Ø 315 mm chucks clamp workpieces within a diameter range that depends on the jaw travel and the mounted configuration. As a general reference, the jaws cover a range of approximately ±30–40% of the nominal chuck diameter. For very small diameters (workpieces <Ø 20 mm on a Ø 315 mm chuck), consider smaller jaws or collets. Customer support in Italian available.
Can the top inserts be replaced separately?
Yes — this is the main advantage of the top jaw construction. When the top inserts are worn or when you want to mount inserts made of a different material (e.g., soft inserts for delicate workpieces), you unscrew the fastening screws and replace only the inserts without having to buy the complete set of jaws. Replacement inserts available separately. Customer support in Italian available.
Delivery times?
Original spare parts available with 3–5 business day shipping. Customer support in Italian available.
-
Product safety
-
Reviews
Product safety
