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Drive loss due to roller chain

Drive loss due to roller chain

Drive loss due to roller chain

(OP)
Can anyone tell what what the drive efficiency loss is through roller chain.  For instance if I have four parallel shafts connected by individual roller chains, assuming all of the sprockets are the same size, what is the power loss between shafts due to the roller chain?

RE: Drive loss due to roller chain

Mark's Handbook for Mechanical Engineers says 98-99%, but I think this is over-optimistic.  Under ideal conditions:

Chain and sprockets not significantly worn
Running within manufacturer's ratings
Good alignment
Good lubrication
Sufficient number of teeth in small sprocket:
    17 or more for low speed drives
    21 or more for moderate speed drives
    25 or more for high speed drives

- I'd suggest using 95% per drive.

Four shafts means three drives: .95 x .95 x .95 = 85.7% efficiency.

pdr@baymachinedesign.com

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