Tips for HS Keyway Broaches

Instructions for Use

HS Precision Broaches: Easy Broaching without special machine tools

For keyway broaching an expensive special machine tool isn't needed. A mecanical arbor press or a hydraulic press, like it is available in almost all workshops, is quite sufficient and most suitable.

Detailed informations about our Manual Presses and Broaching Machines will be send to you upon request.

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Keyway broaches and bushings are clearly marked as to size
engraved in the tool with "I" bis "VI" (and mentioned in the charts
with "Type I" to "Type VI").

Any I Broach can be used with any I Bushing,
and II Broach with II Bushing, etc.

Bushes with diameters 6 - 150 mm are available from stock,
other sizes and custom bushes are available on short delivery.

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 Application:

1. Select a bushing according to the drill hole diameter of the
    workpiece.

2. Select the broach with the corresponding keyway width
    (available are broaches with tolerances JS9 and P9).

3. Push the broach into the slot of the bushing.
    It must slide freely until the first tooth locates in the workpiece.

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4. Place the unit of "workpiece-bushing-broach"
    under the ram.

5. Make sure that the tool is centered below the ram
    so that the ram thrust forces will drive the broach
    directly through the bushing to avoid drift.

6. Drive the broach through the working piece.

IMPORTANT: Lubrication can make or break a job!

Supply the broach during the entire broaching process with sufficient cutting oil resp. lubricant of good quality.