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ISO 9001:2015, ISO 14001 and IATF 16949

About Us

The Sumex Auto Tech team

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.

Why Choose Us

Why Sumex — Technical Highlights

Single-Source Capability Across the Driveline Manufacturing Chain

Machining at Sumex Auto Tech

CNC turning, VMC multi-face milling, HMC production machining, gear hobbing, broaching, induction hardening, centreless grinding, and shot blasting — sequenced in-house. Eliminates inter-vendor dimensional variation and process drift between operations.

Trunnion diameters, bearing seats, spline profiles, and bore geometries are held to ±0.005 mm. Calibrated tooling and in-process checks at every stage keep results consistent from one production lot to the next.

Induction hardening is applied to functional zones with controlled case depth and uniform hardness. Material inputs are traced by heat number against ASTM, EN, or IS specifications.

Components are engineered for correct fitment the first time. Dimensions, surface finish, and hardness are verified before dispatch to reduce premature failure and downtime in service.

Every lot carries its own control plan, dimensional inspection records, and dispatch traceability, structured to support OEM audits and export documentation.

Core Manufacturing Competencies

Integrated Machining & Gear Processing

CNC, VMC, and HMC operations cover turning, multi-face milling, and production machining of crosses, yokes, shafts, and spline components. Gear hobbing and broaching produce external and internal splines. All geometry and form tolerances are controlled in-house, with no subcontracted 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

The quality system is aligned with ISO 9001:2015. Calibrated micrometers (0–300 mm), bore gauges, height gauges, and dial indicators are used for in-process and final inspection, with documentation maintained per lot for OEM and export requirements.

Engineering Capability

Processes

Turning · Milling · Gear Hobbing · Broaching · Grinding · Induction Hardening · Shot Blasting · Coating

Materials

Alloy steels (EN / SAE grades) · Carbon steels · SG iron — per customer drawing

Applications

Medium & Heavy Commercial Vehicles · Off-Highway · Agricultural Machinery · Industrial Driveline

Traceability

Heat number → machining → heat treatment → inspection → dispatch — full lot linkage maintained

Certifications

ISO 9001:2015 (IATF 16949 in progress)

500+Components in Production
120+Skilled Workforce
$5M+Annual Turnover
1M p.a.Production Capacity In Parts
IATFTUV Certification

Manufacturing Timeline

2017
Company established — driveline component manufacturing initiated
2018
CNC/VMC machining commissioned for UJ crosses and yoke components
2019–2020
HMC, gear hobbing, broaching, and induction hardening integrated — full propeller shaft sub-component manufacturing
2021
CNC/VMC capacity expanded; glide coating and specialised components added
2022–2023
Component portfolio scaled to 300+ active SKUs with higher machining throughput
2024–2025
500+ components in active production, with expanded CNC/VMC infrastructure and workforce

Developing a new driveline component or qualifying an alternative supply source?

Share your drawing or specification. Our engineering team will review manufacturability, tolerance feasibility, and process routing before submission.

Contact Us