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Bernardo  |  SKU: 21-2014F

PO4-400 4-Jaw Precision Chuck

€3.018,79 (22% VAT incl.)
Business solution up to 30 installments

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

Performance:

  • Spindle with four precision rotating jaws
  • With centering according to DIN 6350
  • Steel version for higher speeds and longer life
  • Includes 1 set of rotating and drilling jaws

Field of application:

  • Suitable for lathes and grinders
  • For use on machines with higher concentricity

Standard accessories:

  • 1 set of IJ-PS rotating jaws
  • 1 set of OJ-PS drilling jaws

Technical specifications

Spindle size A

400

B

108 mm

C

5 mm

D

330 mm

E

136 mm

F

362 mm

G

M16

H

145 mm

J

55 mm

Max. speed

2000 rpm

Weight approx.

85 kg

Logistics

Original spare parts available with 3–5 business day shipping. Customer support in Italian available.

Frequently asked questions

PO4 4-jaw chuck Ø 400 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 more time (3–5 minutes with dial indicator) compared to the self-centering PO3, but the achievable precision is higher: <0.01 mm with dial indicator. The PO3 is faster; the PO4 is more versatile.

Standard DIN 6350 connection — how is the chuck mounted?

The DIN 6350 bolted flange connection is mounted by tightening the fastening screws evenly in a cross pattern. It takes 5–10 minutes to mount. The angular position is fixed — the chuck should not be removed frequently with this connection.

The included jaws — can they be reversed for external gripping?

The included kit contains rotating jaws (external gripping) and drilling jaws (internal gripping). For gripping thick workpieces from the inside, drilling jaws are used; for standard external gripping, rotating jaws are used. The PO4 jaws are not reversible — they are replaced with the appropriate type depending on the operation. Customer support in Italian available.

Delivery times?

Original spare parts available with 3–5 business day shipping. Customer support in Italian available.

Product safety

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