This is a Three Step Pulley for a Watchmaker's Lathe Motor... as used in Watchmaker repair. The grooves work equally well with round poly belting and square or round leather belting, 1/8" to 3/16" crosssection.
The dimensions are:
Fractional:
1", 13/16", 5/8" sheave OD's... 1/4" Bore
1 1/16", 7/8", 11/16" sheave OD's... 1/4", 5/16" Bore
1 1/8", 15/16", 3/4" sheave OD's... 1/4", 5/16", 3/8" Bore
1 1/4", 1 1/16", 7/8" sheave OD's... 1/4", 5/16", 3/8", 1/2" Bore
Decimal:
1.0", 0.8125", 0.625" sheave OD's... 0.251" Bore
1.0625", 0.875", 1.0625" sheave OD's... 0.251", 0.3135" Bore
1.125", 0.9375", 0.75" sheave OD's... 0.251", 0.3135", 0.376" Bore
1.25", 1.0625", 0.875" sheave OD's... 0.251", 0.3135", 0.376", 0.501" Bore
All pulleys are 1" long
Custom pulleys for this profile are available.
These are made to the same profile as original equipment pulleys.
This one is Brass... heavier and more durable than aluminum.
These will fit most US manufactures of Electric Motors.
Multiples are available at 10% discount for three or more. Please email with your needs.
These are new manufacture, made in the USA.
