SINGLE GROOVE PULLEY Brand new. Fractional HP, single groove, cast iron pulley with keyway and one set-screw. For use with type "A" and "B" belts. Fully balanced.
Outside Diameter 4.95"
Belt Type A (1/2") Datum Diameter 4.20"
Belt Type B (5/8") Datum Diameter 4.60"
Shpg. 3 lbs.
Outside Diameter Diameter measured at the outside of the pulley.
Datum Diameter The datum diameters are an industry standard reference point used for calculations such as center distance and belt length. The datum system replaces the pitch system for classical belts and pulleys to compensate for differences in manufacturers construction of belts.
A: All of our regularly stocked pulleys have a max working RPM rating of 3600 RPM.
Date Submitted: 01/27/2019
I have a mow deck that has a screwed up pulley... I need a pulley that is about 4.8 inches across by about 7/8 inches thick. this one looks close - but I don't see a thickness mentioned. Also curious about the v-belt - not sure I understand the datum size thanks
A: The thickness is detailed in the dimensional diagram on this item's web page. The main body is 7/8" and there is an additional 13/32" through the hub, making the overall thickness 1.28" The datum diameter is calculated at the point in the belt where the torque is transferred, and can be quite confusing for calculating belt ride heights. 5/8" belts ride about at the pulley o.d., and by adding .375" to the datum diameter for the 1/2" belts you can get a close figure on the back side of what they will ride at.