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TJ-PS4-125 reversible insert jaws
TJ-PS4-125 reversible insert jaws 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.
Description
Reversible top jaws Ø 125 mm for 4-jaw chucks type PS. Available from Krollit, official Bernardo distributor since 2007.
Logistics
Original spare parts available with 3–5 business days shipping. Customer support in Italian available.
Technical specifications
Technical Specifications
Chuck size |
125 mm |
M |
16 mm |
h |
22.6 mm |
G |
12.69 mm |
L |
10 mm |
J |
9 mm |
K |
14 mm |
d |
7.95 mm |
E |
4 mm |
F |
3.2 mm |
R |
13 mm |
N |
8 mm |
C |
38.5 mm |
B |
22 mm |
A |
56 mm |
O |
14.5 mm |
P |
35 mm |
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 125 mm — what do "top jaws" and "reversible" mean?
"Top jaws" indicates that the jaw is composed of two parts: the base body (hard, in hardened steel) that moves in the chuck guides, and the top insert (the jaw itself, in soft or hardened steel) screwed onto the base body. The inserts can be replaced separately when they wear out without changing the base body. "Reversible" indicates that the same insert can be mounted in two opposite orientations — for internal or external gripping — without changing the jaw.
For Ø 125 mm — what is the clamping diameter range with these jaws?
Reversible top jaws for Ø 125 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 125 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 of a different material (e.g., soft inserts for delicate workpieces), you unfasten the fixing 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 days shipping. Customer support in Italian available.
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