Construction and mining equipment
QProcess supplies cast, forged and machined components to manufacturers of construction and mining equipment such as excavators, loaders, cranes, crushers and drilling equipment. Typical parts are pins and bushings, hubs, housings, counterweights and abrasion-resistant wear parts.
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At a glance
Typical parts
- Pins, bushings and bearing sleeves
- Wheel hubs, sprocket hubs and planetary carriers
- Gearbox and swing drive housings
- Counterweights
- Wear plates, liners and crusher parts
- Hydraulic cylinder parts: rod eyes, pistons, glands
- Brackets and plates
Inspection
- MT or UT for load-bearing castings and forgings
- Hardness and case depth of pins and wear parts
Documents
- EN 10204 3.1 certificate
- Dimensional report
- Heat treatment record with hardness and case depth
Processes and materials
| Component | Process | Typical material |
|---|---|---|
| Pins | CNC turning, CNC grinding | 42CrMo4, 16MnCr5 |
| Bushings | centrifugal casting, continuous casting | CuSn12-C, CuAl10Fe5Ni5-C |
| Hubs and planetary carriers | forging, sand casting | 42CrMo4, EN-GJS-600-3 |
| Gearbox housings | sand casting | EN-GJS-400-15 |
| Counterweights | sand casting | EN-GJL-200 |
| Wear parts | sand casting, laser cutting, waterjet cutting | white iron to EN 12513, wear-resistant steel |
| Cylinder parts | forging, CNC turning | C45, 42CrMo4 |
Quality and documentation
Load-bearing castings and forgings are usually tested by magnetic particle (MT) or ultrasonic (UT) testing in addition to the material certificate to EN 10204 3.1 and the dimensional report. Hardness and case depth of pins and wear parts are documented with the heat treatment record. More on the quality page.
Related pages
- CastingSand, die, permanent mould, investment, centrifugal and continuous castings in iron, steel, aluminium and bronze, produced by foundries in Türkiye.
- ForgingClosed-die and open-die steel forgings, rolled rings and shafts from forges in Türkiye, supplied raw, heat treated or machined, with EN 10204 3.1 certificates.
- CNC machiningCNC turned, milled and ground parts, EDM, laser and waterjet cut parts from machine shops in Türkiye, from prototypes to series, with dimensional reports.
- Secondary operationsHeat treatment, galvanising, powder coating, KTL e-coating, painting and assembly for cast, forged and machined parts, managed by QProcess in the same order.
- Agricultural machineryGearbox housings, PTO shafts, hubs, brackets, counterweights and wear parts for agricultural machinery manufacturers, produced by manufacturers in Türkiye.
- Other industriesCast, forged, machined and plastic parts for pumps and valves, hydraulics, rail, material handling, industrial automation, robotics and marine equipment.
Frequently asked questions
Which materials are used for wear parts?
Abrasion-resistant white irons to EN 12513, such as Ni-Hard and high-chromium grades, are cast for liners and crusher parts. Wear-resistant steel plate in 400 HB and 500 HB grades is laser or waterjet cut for wear plates and cutting edges.
Can you supply hardened pins and bushings?
Yes. Pins are turned from 42CrMo4 or case-hardening steel, induction or case hardened and ground. Bushings are supplied in steel or in bronze from centrifugal or continuous casting.
Which tests are usual for structural castings and forgings?
Magnetic particle and ultrasonic testing are common for load-bearing castings and forgings, in addition to the material certificate to EN 10204 3.1 and the dimensional report. The extent of testing follows your specification.
Send your drawing. You get a quotation in 3 to 5 working days.
Your drawings are handled confidentially; NDA on request.