Industry
HVAC &
Air Movement.
Fan housings, motor covers, blower casings, and keyway hubs for HVAC and air movement OEMs. SAPL's HPDC output is weighted significantly towards this sector — producing components at volume with consistent bore dimensions, accurate keyways, and durable powder coating.
Sector Overview
HVAC & Air Movement
Aluminium is the material of choice for HVAC and air movement components. Its low density reduces rotating assembly mass, its thermal conductivity aids heat dissipation in motor housings, and its corrosion resistance — particularly after powder coating — is required for outdoor fan units exposed to humidity, UV, and airborne contaminants.
SAPL produces a broad range of HVAC castings in ADC12 and A380 alloys via HPDC. ADC12 is the standard choice for general housings and covers; A380 is specified where thinner wall sections, better corrosion resistance, or greater dimensional consistency are needed. All outdoor-exposed components are powder coated in-house using our 5-tank nano-ceramic pre-treatment line.
OEMs in this sector typically operate at high volume with tight component cost targets. SAPL's integrated model — casting, machining, and coating in one facility — removes inter-supplier logistics cost and quality risk, and allows consistent colour matching across large production batches.
What OEMs Require
Understanding your requirements
These are the recurring requirements SAPL sees from OEMs and procurement teams in this sector — and how our process and quality system addresses them.
Consistent bore dimensions
Bearing fit and shaft clearance are critical. SAPL holds bearing bore tolerances to H7 or tighter on CNC-machined castings, with 100% gauge verification before dispatch.
Accurate keyway geometry
Keyway width, depth, and position determine blade attachment integrity. We machine keyways to customer drawing tolerance and verify with keyway gauges on every batch.
Powder coating batch consistency
Colour consistency across large production batches matters for assembly aesthetics. Our 5-tank pre-treatment and controlled cure parameters maintain consistent film build and colour across batches.
Corrosion performance for outdoor units
Outdoor fan units require coating adhesion and corrosion resistance for 10+ year field life. Our nano-ceramic pre-treatment passes ISO 2409 cross-cut adhesion and neutral salt spray to 500+ hours.
Capabilities
Processes that serve this sector
These capabilities are most relevant to HVAC & Air Movement component programmes.
High Pressure Die Casting
Five fully-automatic HPDC machines from 180T to 450T.
Powder Coating
5-tank nano-ceramic pre-treatment, two dedicated coating booths, 100% Dry Film Thickness inspection on every part.
CNC & VMC Machining
Over 20 CNC turning centres and Vertical Machining Centres — including 4th-axis VMC for complex geometries.
Products
Components we supply to this sector
Sample components SAPL produces for HVAC & Air Movement OEMs. Each product page includes full specifications, alloy options, and process details.
Fan Blade Hub
Die cast aluminium fan blade hubs for HVAC and industrial air movement equipment — precision central bore, consistent blade arm pitch circle, and balanced mass distribution for vibration-free operation at rated speed.
View product →Keyway Hub
Precision aluminium keyway hubs for motor shaft connections in HVAC, pump, and industrial drive applications — accurate bore-to-keyway geometry and consistent fit across production batches.
View product →Retainer Block
Die cast aluminium retainer blocks for HVAC and fan assemblies — fastening and locating components with precise slot and hole geometry, supplied machined and ready for assembly.
View product →Get Started
Sourcing HVAC & Air Movement components?
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