Page 174 - UniorTools-Eng

A special procedure for the

manufacture of pullers

Don't use a spindle that is Always oil the puller spindle.
damaged.
Head (body)

1. Cutting: Cutting material is the "rst operation in the technological procedure of
wrench manufacturing. Optimum design of a cut provides optimal use of material.
2. Forging: Forging technology at Unior ensures excellent strength characteristics
of wrenches. Notably, it maintains appropriate "ber orientation in a forged part,

Don't use a puller which has Always use the right tool for
a dirty spindle. Always clean the job. leaving it uninterrupted and the same as in a rolled blank. That characteristic of
your tools properly. forged parts is vital for achieving the characteristics of products exposed to heavy
and dynamic loads.

3. Trimming: Super&uous material around a forged part is removed using a
special- purpose trimming tool; material is trimmed to the desired shape, always
making the weight of trimmings as low as possible.

4. CNC working: A CNC machine is used to accurately work the head of the
puller, which ensures smooth movement of the small handles.
Don't grind, weld or reheat- Always centre the puller
treat puller arms. spindle on the middle of the
object, so the holding arms 5. Threading: The accurate threading of the internal trapezoid thread ensures the
are distributed evenly on
the body. smooth movement of the spindle and thus enables rapid adjustment when using
the puller.
6. Heat treatment (quenching and tempering) and sanding: The heat
treatment with hardening and tempering is intended to improve the structure
of the steel, to provide greater hardness and toughness of the product and other
properties required to overcome the strain that work with such products requires.
Don't use pneumatic tools
with pullers.
7. Sanding: Cleaning the surface before chroming is important for the sake of
quality and durable surface protection.

8. Chroming: The handle of the puller is plated with a thin, hard coating of
chromium oxide, which protects against corrosion and wear and other mechanical
damage. At the same time, it gives the entire Unior puller a glossy appearance.

Never use a pipe extension Never put the puller spindle

or other form of lever to o" centre, as slippage of the
increase the leverage. puller arm can occur. Spindle
9. Forging part: The forging part is made by warm upsetting, which provides the
shape of the spindle head

10. CNC working: The CNC machine is used to accurately work the spindle that is
the basis for thread rolling.

11. Thread rolling: Is carried out on a special machine with special rollers. The
resulting trapezoid thread is intended for use under greater strain.

12. Heat treatment (quenching and tempering) and sanding: The heat
treatment with hardening and tempering is intended to improve the structure
of the steel, to provide greater hardness and toughness of the product and other
WHEN USING ANY TOOL,
PROPER PRECAUTIONS MUST BE TAKEN. properties required to overcome the strain that work with such products requires.
13. Sanding: Cleaning the surface before chroming is important for the sake of
The incorrect use of tools can be dangerous. quality and durable surface protection.
We recommend you read our Guides, for
safety tips and instructions on the correct 14. Burnishing and oiling: Burnishing gives a spindle a proper professional
use of our tools. We provide information on appearance and, together with the right oil, the necessary surface protection.
common user errors encountered when
using our tools so please, always follow our
recommendations and check our web page
for up to date information.

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