STANDARD ALLOYS INDIACarbon and low-alloy steels
Cast carbon or low-alloy steel to the OEM strength specification.
ASTM A27 · ASTM A148 · IS 1030 · IS 2644 · EN 10293
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Trunnions
A trunnion carries the mill, its charge and its drive through the bearing journal. It is a structural casting whose life depends on internal soundness, strength and a precisely finished journal.
- Works in
- Feed and discharge trunnions that carry ball and tube mills on their bearings.
- Industries
- Cement, Mining, Equipment makers
- Materials
- Carbon or low-alloy steel
- Size
- Single pieces from 3 kg to 7 tonnes, to drawing
- Supplied
- As cast, or machined to drawing
- Inspection
- Chemistry and hardness on every heat; UT, MPI or DPT and a dimensional report as specified
- From a worn part
- Yes. Send the part or photographs with key dimensions and we will reverse-engineer it
Simplified 3D model · drag to turn
01
How it fails and what we do about it
- 01Journal wear and scoringJournal machined and finished to drawing.
- 02Fatigue cracking at the flange radiusMethod designed for sound metal at the radius; ultrasonic testing.
- 03Wear in the boreBore and liner seats machined to drawing.
02
Choosing the grade
Typical values from the governing standards. A metallurgist confirms the grade for your duty with every quotation.
03
What we control
- Made to drawingFrom the OEM drawing, a part number or a worn sample reverse-engineered in-house.
- Heat treated for the dutyWater quench for manganese steel; air or oil quench and temper for alloy steel.
- Machined to fitBores, pin holes and flanges machined so the part installs first time.
- Tested and recordedHardness, chemistry and NDT reported with the casting.
04
For a quotation, send any of these
- Equipment make and model, or the OEM part number
- Drawing, or the worn part or photographs with key dimensions
- The grade used today and the life it gives
- Quantity per set and sets per year
No drawing? Send the worn part or photographs with key dimensions and we will reverse-engineer it.
Trunnions
A metallurgist reviews every enquiry and replies with a price, a lead time or the right questions.
Or call +91 145 269 5110
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