34 Pa. Code § 29.145 - Pulleys
(a)
Alignment. Pulleys should be kept in proper alignment to keep
belts from running off.
(b)
Crown-faced. Both driving and driven pulleys carrying a
nonshifting belt should have crowned faces.
(c)
Cast iron. Cast iron
pulleys should be tested frequently with a hammer to disclose cracks in rim or
spokes. It should be borne in mind that the sound is usually very different if
the belt is or is not on the pulley. Pulleys with small pieces broken out of
rim should not be used. The rough edges formed by pieces broken out of the
pulley rim offer a decided accident hazard in case any one should come in
contact with the rough edge of the pulley rim. Considerable unnecessary wear on
the belt is also caused.
(d)
Split. Split pulleys should be inspected to ascertain if all
bolts holding together the sections of the pulley are tight.
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