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PO4-315/D8 4-Jaw Precision Chuck
PO4-315/D8 4-Jaw Precision Chuck 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
Features
Execution:
- Chuck with four precision rotating jaws
- With direct camlock mount according to DIN 55029
- Steel version for higher speeds and longer lifespan
- Includes 1 set of rotating and boring jaws
Area of application:
- Suitable for conventional lathes
- For clamping rectangular and round workpieces
- For use on machines with higher concentricity
Standard accessories:
- 1 set of IJ-PS4 rotating jaws
- 1 set of OJ-PS4 boring jaws
Logistics
Original spare parts available with 3-5 working days shipping. Customer support in English available.
Technical specifications
Technical specifications
Chuck size |
315/D8 |
Diameter |
315 mm |
Taper |
8 |
B |
96.2 mm |
D (max.) |
139.734 mm |
E |
103 m |
F1 |
171.4 mm |
Camlock bolts |
6 |
Max. speed |
2800 rpm |
Weight approx. |
51 kg |
Warranty
Warranty terms and support procedures are available on the dedicated Krollit page.
View Krollit warranty termsFAQ / Frequently asked questions
Frequently Asked Questions
PO4 4-jaw chuck Ø 315 mm — when to choose it over the PO3 3-jaw chuck?
The PO4 4-jaw chuck is necessary for square, rectangular, asymmetrical or irregular workpieces that cannot be centered with the 3 jaws of the PO3. The 4 jaws adjust independently — each jaw moves separately to adapt to any shape. Centering takes longer (3-5 minutes with a dial indicator) compared to the self-centering PO3, but the achievable precision is higher: <0.01 mm with a dial indicator. The PO3 is faster; the PO4 is more versatile.
D8 DIN 55029 camlock mount — how does quick mounting work?
The D8 camlock mount allows mounting and dismounting the chuck in less than 30 seconds: by rotating the locking flange a quarter turn. The cam ensures repeatability of positioning <0.01 mm with each mounting — the chuck always returns to the same angular position. Check your lathe's mount code (D8) before purchasing.
Included jaws — can they be reversed for external gripping?
The included kit contains rotating jaws (external gripping) and boring jaws (internal gripping). For gripping strong workpieces from the inside, boring jaws are used; for standard external gripping, rotating jaws are used. The PO4 jaws are not reversible — they are replaced with the appropriate type based on the operation. Customer support in English available.
Delivery times?
Original spare parts available with 3-5 working days shipping. Customer support in English available.
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Product safety
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