Infrastructure
Sumex Auto Tech operates a machining-focused manufacturing facility in Punjab, India, equipped for vertically integrated production of UJ Crosses and propeller shaft components. The setup spans CNC/VMC/HMC machining, gear hobbing, broaching, induction hardening, centreless and cylindrical grinding, dynamic balancing, surface treatment, and a calibrated QA laboratory.
Manufacturing Capabilities
Machining — CNC / VMC / HMC
- CNC machines — Turning of UJ cross bodies, shaft diameters, and yoke profiles
- VMC machines — Multi-face milling operations requiring positional and angular feature control
- HMC machines — Batch production with controlled datum referencing and cycle consistency
- Multi-axis capability — Complex geometries machined in-house without outsourcing
Gear & Spline Processing
- Gear hobbing machines — External spline profiles — controlled module and pressure angle
- Broaching machines — Internal spline generation with profile accuracy and fitment control
Heat Treatment
- Induction hardening setup — Controlled power, frequency, and dwell parameters — case depth and HRC verified per batch
- In-house capability — Eliminates external heat treatment dependency — process parameters fully controlled
Grinding Section
- Centreless grinding — Trunnion ODs, shafts, and cylindrical features to final size and surface finish
- Cylindrical grinding — Precision diameter and roundness on critical bores and ODs
Dynamic Balancing
Propeller shaft sub-components requiring rotational balance — flange yokes, stub shafts, and assembled sections — are dynamically balanced to specification to minimise vibration in service.
Surface Processing
- Shot blasting — Oxide and scale removal prior to inspection and coating
- Glide coating — Corrosion resistance and assembly-compatible surface treatment on functional features
Materials Processed
Material | Specification Reference | Typical Application |
|---|---|---|
Alloy steels | EN 10083, SAE / ASTM A29 — grade per application | UJ crosses, yokes, shafts |
Carbon steels | EN 10277 / EN 10278, relevant IS specifications | Flanges, hubs, fabrication parts |
Hubs, castings, off-highway components | Application-specific grade | Hubs, castings, off-highway components |
All material inputs are processed with traceable heat numbers, verified against controlled specifications, and linked to the production lot record.
QA Laboratory
Instrument | Range / Application |
|---|---|
Micrometers | 0–25 mm to 200–300 mm — external diameters |
Bore Gauges | Internal diameter measurement |
Digital / Dial Vernier Calipers | General linear dimensions |
Height Gauges | Reference datums and step heights |
Dial Indicators | Runout and concentricity verification |
Production Scale
Parameter | Status |
|---|---|
Components in Production | 500+ active SKUs |
Workforce | 120+ skilled personnel |
Annual Production Capacity | 6,000 tonnes |
Facility Location | Punjab, India |
Process Flow
Raw Material
CNC/VMC/HMC Machining
Gear Hobbing / Broaching
Induction Hardening / Surface Hardening
Centreless / Cylindrical Grinding
Shot Blasting / Coating
In-Process & Final Inspection
Batch Release & Dispatch
Require details on machining capability, equipment specification, or production capacity for a specific component?
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