ford ka - engineering equipment for drilling hardened steel

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Sun 4 Aug 2019 19:39
ford ka - engineering equipment for drilling hardened steel - aroon

As title says really... what engineering machinery is best for removing a snapped pinch bolt..

Hss drill bits take hours as they are strengthened steel !!!!!

Have a hub assembly with snapped bolt as it was seized. Now need to remove it then replace with a nut and bolt

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Sun 4 Aug 2019 20:25
ford ka - engineering equipment for drilling hardened steel - elekie&a/c doctor
Heat is your best friend here. Get it hot and punch it through. This is not a regular bolt . Get the correct part and a new nut.
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Sun 4 Aug 2019 20:54
ford ka - engineering equipment for drilling hardened steel - nailit

I have been informed (from an excellent experienced engineer) that a carbide drill should be able to drill hardened steel. FWIW.

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Sun 4 Aug 2019 21:21
ford ka - engineering equipment for drilling hardened steel - focussed

For drilling out a high-tensile bolt - It's probably a 10.9 grade if it's a suspension pinch bolt - tough but not super-hard as such, use a HSS cobalt drill bit such as these:-

https://www.axminster.co.uk/axminster-cobalt-hss-drill-bits-ax21744

I've got a set and they are very good.

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Mon 5 Aug 2019 01:03
ford ka - engineering equipment for drilling hardened steel - CHarkin

A cobalt drill bit will do it no problem. Constructed with a carbide tip like a masonry brill but ground with a cutting edge like a conventional drill. If you have a good enough grinding wheel you can even make one out of an old masonry drill bit.

Drilling it out is a last resort method, are you sure there is no other way?

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Mon 5 Aug 2019 12:38
ford ka - engineering equipment for drilling hardened steel - focussed

You need a green silicon carbide grinding wheel for carbide.

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Mon 3 Feb 2020 19:54
ford ka - engineering equipment for drilling hardened steel - Brendan Kennedy

Agree cobalt drill bits will do the job, use some cutting paste also to reduce friction. Some good tips here

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Tue 4 Feb 2020 10:40
ford ka - engineering equipment for drilling hardened steel - Peter.N.

I got some very hard drills from Axminster to drill out a circlip on a 206 rear wheel bearing, its slow going but will do it. We do our shopping in Axminster so it was quite convenient.

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