Fan idler pulley
View Patent ↗A fan idler pulley having a threaded hub for attaching a fan shaft. The pulley also comprises a receiving portion for engaging a bearing. The bearing is further engaged with a cup. The entire assembly is mounted by a pin press fit though the cup into a mounting surface such as an engine block or front cover. The pulley may be engaged to either the inner race or the outer race of the bearing.
1. A pulley assembly comprising:
a belt bearing surface;
a fan shaft engaged with the hub surface;
a web connecting the belt bearing surface to a hub;
the hub having a hub surface for engaging a shaft;
the hub surface describing a central hole;
a receiving portion opposite the hub, the receiving portion engageable with a bearing first race;
a cup for receiving a bearing second race; and
a fastener engaged through the central hole for attaching the cup to a mounting surface.
2. The pulley assembly as in claim 1 further comprising a shaft attached to the hub surface.
3. A pulley assembly comprising:
a belt bearing surface;
a web connecting the belt bearing surface to a hub;
the hub having a threaded hub surface for engaging a shaft;
a fan shaft engaged with the hub surface;
the hub describing a central hole extending through the hub;
a receiving portion opposite the hub on the web, the receiving portion engageable with a bearing first race;
a cup for receiving a bearing second race; and
the cup is attachable to a mounting surface.
4. The pulley assembly as in claim 3 further comprising a shaft attached to the hub surface.
5. The pulley assembly as in claim 3 , wherein the bearing first race is an outer bearing race.
6. The pulley assembly as in claim 3 , wherein the bearing first race is an inner bearing race.
7. The pulley assembly as in claim 3 wherein the bearing comprises a ball bearing.