Forging / Forged Shafts

Forged Industrial Shafts

Industrial shafts are the spine of rotating machinery. Monmet supplies open-die forged shafts in a wide range of tonnages for hydro and steam turbines, generator rotors, marine propulsion, mining mills and heavy gearboxes.

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Engineering Disciplines

Bore-and-step layout, fillet radius optimization, residual-stress control during quench and finish machining are coordinated on each shaft program.

Common Materials

4140 and 4340 for general industrial shafts, low-alloy steel grades for rotor-type shafts, and precipitation-hardening or duplex stainless steels for corrosive service — always to the grade named on your drawing.

Inspection

Inspection and testing are supplied to the standards and acceptance levels stated on your drawing or purchase order.

Frequently Asked Questions

Yes — mono-block and shrunk-on disc rotor shafts are quoted in low-alloy steel grades to the specification and test package named on your drawing.

Shafts from small components to very large single pieces, with intermediate journals turned to drawing tolerance.

Related Forging Capabilities

Open-Die Forging

Open-die forged shafts, blocks, discs and cylinders in a wide range of tonnages, in carbon, alloy and stainless steels. Continuous grain flow; testing to your drawing.

Forged Gears

Forged gear blanks, pinions and bull gears up to large diameters in 4140, 4340 and case-hardening steel grades. Tooth-cutting and heat treatment integrated.

Ring Rolling

Seamless rolled rings in a wide range of tonnages and large outside diameters for slewing bearings, wind turbines, large flanges and pressure vessels. Carbon, alloy and stainless grades.

Forging vs Casting

Forging vs casting: fatigue strength, geometry complexity, tooling cost and lead time. Engineering guidance to specify the right process for each application.

Next steps

Continue exploring Monmet

Large Forgings →

Open-die, closed-die and large-diameter seamless rolled rings — request a quote.

Casting Processes →

Sand, investment, centrifugal & continuous casting.

Industries Served →

Mining, cement, energy, pulp & paper and more.

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Talk to our specialists and find other ways of forming and shaping metal. There are options aside from casting and forging, such as metal spinning, extrusion and drawn metals.

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Send us a drawing, a sample photo or the part description. A Monmet specialist will review it and follow up with a quote.