Shaft Key Material

• Nov 18, 2003

• #2

M

MintJulep

Mechanical

Jun 12, 2003

10,244

JP

You run the risk of damaging the shaft in the event of an overload. Keys are intended to be sacrificial.

 

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• Nov 18, 2003

• Thread starter
• #3

murphy12

Mechanical

Jun 24, 2003

5

US

Thanks. I though that was the reason, but I was wondering if there were any other reasons.

 

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• Nov 18, 2003

• #4

ornerynorsk

Industrial

Feb 5, 2002

3,198

US

There is no reason that you can't use a harder material, I've used hardened keys in the past with much success. Just keep in mind what mintjulep said, but you almost always have some repair considerations when a key shears, regardless of material.

 

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• Nov 18, 2003

• #5

M

MintJulep

Mechanical

Jun 12, 2003

10,244

JP

murph,

These types of things work pretty well if you have the space.

http://www.fennerindustrial.com/products/trantorque_ind.html

 

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• Nov 19, 2003

• #6

savis

Mechanical

Aug 13, 2003

5

CA

This is an interesting question. However, you should be careful to consider what the industrial mechanic will replace this key with if they have a failure of some type. We recently had some issues with keys fretting and found out that our stock room was stocking 6x6 keystock material incorrectly (using 6x6 square stock c-1018. The tolerances are greater +0/-0.078, whereas keystock is +0-0.030.

Savis

 

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