Vertically Integrated Driveline Manufacturing
CNC/VMC/HMC turning and milling, gear hobbing, broaching, induction hardening, centreless grinding, and calibrated final inspection — all under one manufacturing roof. No inter-vendor process handoffs. No dimensional drift between operations.
Why Choose Us
Why Sumex — Technical Highlights
Single-Source Capability Across the Driveline Manufacturing Chain
Integrated Process Control
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.
Tight Tolerance Machining
Functional features — trunnion diameters, bearing seats, spline profiles, bore geometries — maintained within ±0.005 mm using calibrated tooling and in-process verification at each stage. Statistically consistent across production lots.
Metallurgical Process Control
Induction hardening applied to functional zones with controlled case depth and hardness uniformity. Material inputs processed with heat number traceability against ASTM / EN / IS specifications.
Low Life-Cycle Cost by Design
Components are engineered for correct fitment in the first instance — dimensional compliance, surface finish, and hardness verified before dispatch — reducing the risk of premature failure and associated downtime.
Documentation Structure
Lot-specific control plans, dimensional inspection records, and dispatch traceability. Structured to support OEM audit requirements and export documentation standards.
Dimensional Control • Traceability • Documentation • Zero Defect Mindset
PPAP Ready Documentation • OEM Grade Packaging • Flexible MOQs
Product Families
Manufactured to Drawing. Validated to Specification.
Induction-hardened, ground trunnion geometry — Inner Lock, Outer Lock, and Patti Type configurations
Dynamically balanced flanges, slip yokes, tube yokes, splined shafts, and flange holders
Precision-machined suspension and axle interface components
Pivot pins, hubs, tipping links, differential and hydraulic components
Trunnions, spring saddles, custom fabricated assemblies per drawing
Stub shafts, through shafts, spline-profiled couplings
Drawing-based development — alloy steel, carbon steel, SG iron
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)
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Share your CAD file or dimensional specification.
Our engineering team responds within 24–48 hours with manufacturability assessment, process routing, and competitive quote.
