Technocast Foundry casts axle housings, wheel hubs, steering knuckles, brackets and transmission cases for tractors, material handling and mining vehicles. Ductile (SG) iron, grey iron and steel, from 1 kg to 1,500 kg in a single piece, cast, machined and tested at Arasur, Coimbatore, Tamil Nadu, India.
Off-Highway Vehicles
Heavy driveline and chassis castings for machines that work in the dirt.
Off-highway work is about one fifth of everything we pour. These are the driveline and chassis parts of tractors, material handling equipment and mining vehicles: axle housings and trumpets, wheel hubs and carriers, steering knuckles and yokes, brake and suspension brackets, transmission cases and counterweights.
Off-highway castings live under shock loading, mud, vibration and long duty cycles. The part has to be sound all the way through and dimensionally stable after machining. That is why most of this work runs on the Alpha-set No Bake line and the ARPA boxes, where the mould stays rigid and a thick section can be poured without risking shrinkage.
Approvals in this sector are held with tractor and off-highway equipment makers in India and Europe. Single pieces run to 1,500 kg on floor moulding at 2,000 x 2,000 x 700 mm, and parts can be supplied raw, machined, painted, fabricated or fully assembled and tested.
What We Make
Housings, hubs, carriers and brackets for tractor, loader and material handling builders.
Why This Work Runs Here
Weight range, heat treatment, machining reach and proof testing. A foundry that is missing any one of them sends the part somewhere else halfway through.
Five moulding routes mean the same supplier quotes a 3 kg bracket and a 1,200 kg axle housing. The No Bake fast loop line handles 1,600 x 1,200 x 700 mm; floor moulding goes to 2,000 x 2,000 x 700 mm.
Stress relieving, normalising, annealing, hardening and tempering, and induction hardening are all done at Arasur. A heavy casting does not leave the site to be treated and come back distorted.
Vertical turn mill to 1,750 mm diameter, five vertical turret lathes, four horizontal machining centres including a five-axis, and a Fellows gear shaper to 500 mm. Big parts are finished here, not subcontracted.
Ultrasonic and magnetic particle inspection in house, pressure testing on housings, and load testing on a 2,000 tonne hydraulic press to your specification.
Specifications
Send a drawing and we will confirm against your part. The figures below are the working envelope.
| Item | What We Offer |
|---|---|
| Materials | Ductile (SG) iron EN-GJS-400-18 to EN-GJS-900-2, grey iron EN-GJL-250 to EN-GJL-300, cast steel to IS 1030 and ASTM A27 / A148 / A216, alloy steel to IS 7598 and ISO 683-7 |
| Typical part weight | 1 kg to 1,500 kg in a single piece |
| Moulding routes | ARPA 450 (to 100 kg), ARPA 1300 (to 550 kg), Alpha-set No Bake fast loop line and floor moulding (to 1,500 kg) |
| Largest moulding box | Floor moulding at 2,000 x 2,000 x 700 mm |
| Core making | Cold box, shell and CO2 cores. Shooters from 5 kg to 30 kg, plus a four-table CO2 facility |
| Heat treatment | Stress relieving, normalising, annealing, hardening and tempering, and induction hardening |
| Machining | Vertical turn mill to 1,750 mm diameter, VTL, VMC, HMC and turning centres, plus gear shaping and dynamic balancing to 1 gram |
| Testing | Ultrasonic and magnetic particle inspection, pressure testing, and load testing on a 2,000 tonne hydraulic press to customer requirement |
| Supply condition | Raw casting, machined, painted, fabricated, or fully assembled and tested |
Applications
Six part families we run regularly for tractor, material handling and mining vehicle builders.
Long, cored ductile iron housings where wall thickness has to stay even and the bore has to stay straight after heat treatment. Usually No Bake moulded and machined complete.
Hubs, planet carriers and drum carriers that take wheel load and braking torque. Machined on the VTLs and balanced where the drawing calls for it.
Ductile iron or cast steel parts under shock and fatigue loading, ultrasonically checked for internal soundness before machining.
Medium-weight brackets in volume, where hole positions decide whether the part fits on the assembly line.
Cased and cored parts that must be pressure tight and dimensionally stable. Pressure tested after machining where specified.
Heavy grey iron sections up to 1,500 kg, floor moulded, then painted or fabricated into a sub-assembly.
Quality Gates
Six checks between the furnace and the packing bay. A part that fails one does not move to the next.
Every heat is read on an ARL spectrometer before pouring, and the result is recorded against the batch.
Ductile iron is checked by ultrasonic velocity, then confirmed under a microscope with image analyser for graphite shape and count.
Tensile strength, elongation and hardness are tested on samples poured from the same heat as your parts.
Large parts are measured on the 1,500 x 1,200 x 1,000 mm Brown and Sharpe coordinate measuring machine with a scanning probe.
Ultrasonic and magnetic particle inspection in house. Radiographic inspection through an accredited partner when the drawing calls for it.
Pressure or load testing where specified, then paint, packing and the documentation pack for your incoming inspection.
Common Questions
Axle housings and trumpets, wheel hubs and carriers, steering knuckles and yokes, brake and suspension brackets, transmission cases, and counterweights for tractors, material handling equipment and mining vehicles.
1,500 kg in a single piece, on floor moulding at 2,000 x 2,000 x 700 mm. The No Bake fast loop line covers 1,600 x 1,200 x 700 mm, and ARPA 1300 takes parts to 550 kg.
Ductile (SG) iron in EN-GJS-400-18 to EN-GJS-900-2, grey iron in EN-GJL-250 to EN-GJL-300, cast steel to IS 1030 and ASTM A27, A148 and A216, and alloy steel to IS 7598 and ISO 683-7.
Yes. Stress relieving, normalising, annealing, hardening and tempering, and induction hardening are all carried out at Arasur, so a heavy casting does not leave the site and come back distorted.
Yes. Vertical turning runs to 1,750 mm diameter, with five vertical turret lathes, four horizontal machining centres including a five-axis, gear shaping to 500 mm and dynamic balancing to 1 gram.
Ultrasonic and magnetic particle inspection are done in house. Radiographic inspection is arranged through an accredited partner when the drawing calls for it.
Yes. Parts can be supplied raw, machined, painted, fabricated with TIG, MIG or arc welding, or fully assembled and load tested on a 2,000 tonne hydraulic press.
At 127/3B, Sangothipalayam Road, Arasur, Coimbatore, Tamil Nadu 641407, India, on a single 523,200 sq ft site with the foundry, machine shop and testing under one management. Tractor and off-highway equipment makers in this sector audited the plant before the first order.
Certifications
Send a Drawing
Send the drawing with the material grade, the single-piece weight, the annual volume and the testing you need. You get back the moulding route, a lead time and a price.
Before you go
Our brochure and every current certificate, in PDF, for your vendor file.
Or send us a drawing
