Overview
An HVAC blower wheel is the molded cage that pulls air through a blower housing and pushes it out along the scroll. It is molded as one part: a front rim, a back plate, a band of curved blades between them, and a hub at the center with a bore through it.
Air enters at the open center of the front rim, turns through the blade band and leaves at the rim edge. The blades sit on one pitch, so the mass sits evenly and the wheel runs without a heavy side. The hub bore takes the motor shaft, and the slot in the bore takes the flat on the shaft, so an HVAC blower wheel turns with the motor instead of slipping on it.
Key Features & Benefits
- Curved blades on one pitch: even mass around the wheel
- Two rims: hold the blade tips at one diameter
- Hub with a slotted bore: turns on the motor shaft flat
- Ribs from hub to back plate: carry the blade band off the shaft
- One molded piece: no screw between hub and cage
Blade pitch, rim diameter and bore all come off the model, so an HVAC blower wheel from one tool fits the same housing on every run.
Customization Options
- Wheel diameter and width
- Blade count, curve and pitch
- Rim thickness and blade tip gap
- Hub: bore, length and slot
- Ribs: count and depth
- Material: glass filled nylon, PP or acetal
- Color: black, gray or a matched shade
A second blade count can run on the same tool on a different insert, so one HVAC blower wheel family serves two air paths. A clamp ring can be added at the hub where the shaft calls for one.
Quality & Delivery
Tooling for an HVAC blower wheel is cut in our own mold shop, and the first article is gauged against your 3D file, blade pitch and bore included, before the run is released.
Mold faces are polished to the sheen your 3D file calls for, the gate is trimmed flush, and the blade tips come off the tool at one diameter, so an HVAC blower wheel sits in its housing without a rub. Lead time is quoted with the unit price and held to the date, and each batch is gauged before packing.
We mold every HVAC blower wheel to your 3D file, so the blades, the rims and the hub follow the model. Send the 3D file for a quotation with the tool cost and the unit price.
Related Capabilities
A wheel on a motor shaft sits beside this HVAC blower wheel. Our cooling fan impeller is a molded fan for equipment cooling, and the flanged hub is a wheel body with a flange at the bore.
Where a running part needs a plain bearing, the ring bushing sets a gap between two faces.
Molding runs in house on our mold making floor, with injection molding for the wheel. Our automotive plastic parts page groups vehicle work, our capabilities page lists the cells and our works page shows past jobs.
