liam.mccaffrey
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| posted on 23/6/04 at 11:31 PM |
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gears and torque
in the hpc gears catalogue(get one if you havn't got one) in the spur gear section there is a table marked
"Torque Check ,50 teeth x 1000 RPM"
it then lists torque (NM) and power (K.W.) values for different gear materials.
this is not that clear so i will give an example to illlustrate
Torque Check ,50 teeth x 1000 RPM
6 DP standard duty spur gear made of 214M15 gives a torque value of 200 and a power of 20.8
the same gear but case hardened gives torque of 953 and power of 99.9
I will be honest i don't know how to interpret this info, are the values max torque values, values @ given rpm,
How would you use the info given to work out if a gear was suitable for use in a gear train for an engine with a known torque output?
If anyone knows I would really appreciate any help
cheers
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JAG
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| posted on 24/6/04 at 08:24 AM |
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Using this example;
quote:
6 DP standard duty spur gear made of 214M15 gives a torque value of 200 and a power of 20.8
200Nm is the max' torque with the gear stalled i.e stationary and the max' power value can be used to give a max' torque rating at
any particular RPM by re-arranging this equation,
Power (W) = Torque (Nm) x RPM (in Radians/second)
Hence,
Torque = Power / RPM (same units as above)
Justin
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