Internal-Extraction

Innen-Ausziehen

Principle


Pullers in our 20 and 30 series can be also be used as internal extractors by rotating the arms on the cross-beam. A shaft must be available in the center against which the spindle can be braced.

Normally, for an internal extraction, the internal extractors and a counter support are used. This requires sufficient space next to the part to be removed to position the counter support.

If due to space constraints a counter support cannot be used, the extraction can also be accomplished using a slide hammer in combination with the internal extractor

Notes on internal pulling


When using a counter support, ensure that the arms of the counter support do not block the part being removed

Note: the internal extractors must grip firmly underneath the part to be removed

If there is too little space in the bushing below the part to be removed, an internal extractor from series 21-E may be used

Differences between 2-shell and segmented internal extractors


2-shell, 240° grip covering, extendable with 21-V, suitable for narrow internal diameter ball bearings

Segmented, 360° grip covering, grips almost completely under the ball bearing, suitable for narrow internal diameter ball bearings

Combinations of internal pullers of different sizes

Counter supports and slide hammers can be combined with internal extractors of various sizes. The appropriate screw adapters are delivered with orders for counter supports and slide hammers.

Extension of 2-shell internal pullers

Safety information

Carry out regular checks of the condition of the tool and replace damaged or worn parts.
Always keep the pressure screw and cross-beam threads clean and well-oiled.
Before use, make sure you know how to properly operate the pulling tool, in compliance with the necessary safety precautions.
If you are even slightly uncertain about one of the points mentioned above, you should request clarification on tool operation.
Make sure the pulling tool is in perfect condition before use.
Verify that the tool is attached correctly and monitor the force used during the removal process.
Never exceed the stated load values for the tool, and check the application of the pulling force by using a torque wrench for mechanical pulling tools and a pressure gauge for pump-operated hydraulic pulling tools.
Wear suitable personal protective clothing. Always wear protective goggles.
Protect yourself with a protective blanket against jerky movements that are always possible with pulling tools and the part being pulled when doing extraction jobs.
Should overload, stiffness, etc., occur, stop the removal process and use a larger version of the corresponding series to complete the job.
Do not use any electrical or pneumatic servo screwdrivers or impact screwdrivers to operate pulling tools.
Do not use extensions to increase the transmitted torque.
Do not make any modifications to the products.
Because the strength properties of steel change under the influence of heat, pulling tools may not be heated when the parts to be pulled are heated.

About KUKKO

For almost 100 years, we have produced pulling tools for users in craft trades and industry. We are an independent, owner-operated family company, now in the fourth generation, with above-average returns, at 100% equity financing and are one of the leading producers of pulling tools of all kinds.

©2018 Kleinbongartz und Kaiser oHG. All rights reserved. Unauthorized copying or distribution without written permission is strictly prohibited. KUKKO and WILBÄR are registered trademarks of Kleinbongartz & Kaiser oHG in Germany and other countries. TURNUS and WINKELGREIF are registered trademarks of Eduard Gottfried Ferne GmbH & Co. KG in Germany and other countries.

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