About Us
Sumex Auto Tech designs and manufactures Universal Joint Crosses, propeller shaft sub-components, and associated driveline parts for medium and heavy commercial vehicle applications. Established in 2017 in Punjab, India, the facility operates a vertically integrated manufacturing setup combining CNC/VMC/HMC machining, gear hobbing, broaching, induction hardening, centreless grinding, and surface finishing under one roof.
Production is structured to meet OEM dimensional requirements and aftermarket fitment standards. Critical functional features — trunnion diameters, bearing seat geometry, spline profiles, and shaft concentricity — are held to tolerances of ±0.005 mm, supported by in-process inspection and batch-level traceability from raw material to dispatch.
Components are supplied to domestic OEM and aftermarket customers across truck, trailer, off-highway, and agricultural platforms. Active development programs are underway for supply to European, UK, US, and Australian markets.
Core Manufacturing Competencies
Integrated Machining & Gear Processing
CNC, VMC, and HMC operations for turning, multi-face milling, and production machining of crosses, yokes, shafts, and spline components. Gear hobbing and broaching for external and internal spline profiles. All geometry and form tolerances controlled in-house with no dependency on sub-contracted machining.
Material & Heat Treatment Discipline
Alloy and carbon steels processed from controlled inputs with heat number traceability. Induction hardening applied on functional zones — trunnion surfaces, bearing seats, spline roots — with case depth and hardness verified batch-by-batch. Where application requirements dictate, surface hardening parameters are aligned with fatigue and wear specifications.
Inspection & Process Discipline
ISO 9001:2015 aligned quality system with calibrated instruments across the dimensional range. Micrometers (0–300 mm), bore gauges, height gauges, and dial indicators used for in-process and final inspection. Documentation maintained per lot for OEM and export requirements.
Manufacturing Timeline
Company established — driveline component manufacturing initiated
CNC/VMC machining operations launched for UJ crosses and yoke components
HMC, gear hobbing, broaching, and induction hardening integrated → Entry into full propeller shaft sub-component manufacturing
CNC/VMC capacity expanded; glide coating and specialised components added
Component portfolio scaled to 300+ active SKUs; machining throughput increased
500+ components in active production; CNC/VMC infrastructure and workforce expanded
Looking for a manufacturing partner with controlled, process-disciplined operations?
Share your component requirement and supply expectations. We will review and respond with feasibility.