Do you still have unanswered questions? Here you will find a selection of the most important answers to our products and services. Of course, you can also contact us at any time by phone or e-mail – we will be happy to help you!

FAQ Collets

Depending on the material you are processing, we recommend different types of collets. You can find a material recommendation here

We also have intermediate size collets for the same price as the standard collets

We produce collets from AMPCO or grey cast iron. The grey cast iron can also be nitrided on request (ASP on request).

Yes, there are suitable setting tools for this, which you can get from us.

This is very difficult, because the collet consists of 3 segments. In any case, a new pair of pliers is cheaper.

Yes, we offer springs and rings for the double cone collet as spare parts.

Yes, we offer the rubber rings for the pull collets.

Das ist ganz einfach, schauen Sie hier: LINK-Hinweis auf den Film!

Our STANDARD collets have a max. runout of two hundredths (0,02)

Yes, we offer these collets as TRA collets (true running accuracy). The runout is then at max. one hundredth (0.01)

The adjustment range for the double cone collet is ± 0.4 mm, for the pull collet it is + 0.1/-0.3 mm.

FAQ JBS Flexible Guide Bushing System

The JBS Flexible Guide Bushing System for double cone collets has been developed to guide and/or clamp material bars with fluctuating outside diameter in rotating condition in an automatic lathe. The flexible guide bushing system is driven by a toothed belt, a gear wheel, a driver or synchronous drive. Opening, closing and clamping of the collets is done by a pneumatic system with adjustable thrust piece. The thrust piece presses the collets against the fixed spindle cap, and the collets begin to close, enclosing the material rod. The JBS Guide Bushing System is controlled by 4 freely programmable M-commands in the machine.

With the help of a conversion kit, you can switch from double cone to pull system or also extend or reduce the diameter of your desired working area.
Please note that we need your complete guide bushing system for conversion if you want to convert from 20mm to 25mm or if you want to convert from double cone to pull system. We will be happy to advise you about the conversion kit.

When struggling with significant chip problems, a blow-out unit can be helpful. When using a blow-out unit, the chips are blown out of the jackscrew and the collets.

FAQ Other

Most of the collets we have in stock can be shipped within one day. If we produce a customized collet for you, you should receive your order within 7-10 days. On request and for an extra fee, we can also ship by overnight or express.

You will receive your new JBS guide bushing system within 8-10 weeks depending on the type. For special designs the delivery time is longer, this depends on the complexity of the new design and the production time.

You can reach every departement at the following phone numbers:
Sale guide bushes 0431 530356-12
Sales guide tongs 0431 530356-11
Service & Repair 0431 530356-21
Finance & Personnel 0431 530356-60

FAQ JBS Service

In case of repair, please download the repair delivery bill here and send it filled out together with the bushing to our service in Schwentinental.

If you need on-site service, please feel free to contact us. We will offer you an appointment of our technicians as soon as possible.

This cannot be predicted in advance because we do not know what is defective. If all the required spare parts are in stock, we usually return the repaired guide bushing system within a few days.

We recommend a regular check of the guide bushing systems so that possible wear can be detected and remedied in good time before failure is imminent. We will be happy to offer you such a check.

Unsere Öffnungszeiten an den Feiertagen:

Am Himmelfahrtstag, den 9.Mai und Freitag, den 10. Mai 2024 bleibt unser Geschäft geschlossen. Am Montag, den 13. Mai sind wir wieder für Sie da!

We will be closed on Thursday May 9th and Friday May 10th.On Monday, 13th our store is open for you again.

Am Pfingstmontag, den 20. Mai 2024 bleibt unser Geschäft geschlossen. Am Dienstag, den 21. Mai sind wir wieder für Sie da!

We will be closed on Monday, May 20th. On Tuesday, 21st our store is open for you again.