Industry
Industrial
Machinery.
Gearbox housings, bearing carriers, machine body castings, and coupling housings for industrial machinery OEMs. GDC in LM25 with T6 heat treatment for load-bearing components. CNC-machined to bearing fit tolerances.
Sector Overview
Industrial Machinery
Industrial machinery housings carry static and dynamic loads for decades of continuous operation. The material requirements go beyond simple casting — mechanical properties matter. SAPL's GDC process in LM25 alloy, combined with T5 or T6 heat treatment, delivers tensile strengths of 200–230 MPa and hardness of 75–95 BHN — significantly stronger than equivalent HPDC castings in ADC12.
Gearbox housings and bearing carriers require bore tolerances matched to bearing fits — typically H7 in the range of ±0.012 to ±0.021 mm depending on bore diameter. These tolerances are achievable and repeatable on SAPL's CNC turning centres, which are dedicated to high-precision bore work. All bearing housings are CMM verified against drawing before dispatch.
For OEMs running machinery production at volume, SAPL offers the full contract manufacturing model: GDC casting, heat treatment, CNC machining, inspection, and dispatch — all under one quality system with a single Certificate of Conformance per shipment.
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.
T6 mechanical properties
Load-bearing gearbox and housing components must meet minimum mechanical property requirements. SAPL provides heat treatment certificates and Brinell hardness test results for every T5/T6 batch, confirming properties are within specification.
Bearing bore tolerances to H7
Bearing housing bores are machined to H7 tolerance and verified by CMM. Out-of-tolerance bores are rejected before dispatch — there is no field adjustment for bearing fit issues.
Mating face flatness
Gearbox split faces and housing joints require flatness to ensure oil-tight assembly without additional sealing compound. Flatness is measured by CMM and reported per batch.
Long-term dimensional stability
GDC in LM25 provides better dimensional stability under thermal cycling than HPDC alloys. For machinery operating at elevated temperatures, alloy selection is confirmed during DFM review.
Capabilities
Processes that serve this sector
These capabilities are most relevant to Industrial Machinery component programmes.
Gravity Die Casting
LM25 aluminium alloy cast in permanent steel dies using gravity fill.
CNC & VMC Machining
Over 20 CNC turning centres and Vertical Machining Centres — including 4th-axis VMC for complex geometries.
Contract Manufacturing
From raw casting to finished, inspected, and packed component — under one roof, one management team, one Certificate of Conformance.
Products
Components we supply to this sector
Sample components SAPL produces for Industrial Machinery OEMs. Each product page includes full specifications, alloy options, and process details.
Helical Gearbox Housing
High-pressure die cast aluminium gearbox housings engineered for precise gear alignment, bearing bore accuracy, and structural rigidity under continuous torsional load in industrial drive systems.
View product →Magnetic Drill Body & Gearbox Housing
Integrated aluminium die cast body and gearbox housing for magnetic base drilling machines — engineered for motor bore precision, structural compactness, and thermal management under continuous duty cycles.
View product →Get Started
Sourcing Industrial Machinery components?
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