
Wind turbine main shafts
Forged main shafts for multi-megawatt turbines, quenched and tempered, then finish-turned and drilled.
- Material
- 42CrMo4, 34CrNiMo6
- Process
- Forging, turning, drilling, UT
- Used in
- Wind turbines
Custom CNC machined parts and welded fabrications from recent production, grouped by part family. Each part is made to the customer's drawing; the materials and sizes shown are typical, and we work to your specification. Use any entry as a reference when you request a quotation.
Family 01 · 20 parts
Forged, turned and ground shafts from compact motor shafts to 5-metre crusher roll shafts. Forgings are ultrasonically tested before machining, and bearing journals are finish-ground after heat treatment.

Forged main shafts for multi-megawatt turbines, quenched and tempered, then finish-turned and drilled.

Welded and machined rotor shaft for wind generators, stress-relieved before final turning.

Large welded rotor shaft with machined flanges and bearing seats.

Forged shaft with integral flange, ground on bearing and coupling seats.

Rail traction motor shaft with ground journals and keyways.

Precision shaft for high-speed rail drive units.

Splined motor shaft for electric bus drive systems.

Forged gear shaft with integral teeth, hobbed and ground.

Hollow shaft with internal spline for gearbox output stages.

Inner-taper output rotor shaft with external splines.

Eccentric shaft turned on offset centers and ground.

Thick-wall hollow shaft bored and turned concentric to tight runout.

Hollow shaft with external spline and flange.

Hollow shaft with machined grooves and slots.

Long thin-wall tube bored and turned to close tolerance.

Square-section shaft with milled flats and turned journals.

Heavy-duty pin shaft, induction-hardened and ground.

Spiral component with 5-axis milled flights.

Large stepped shaft turned on heavy-duty lathes.

Main shaft assembled with machined bearing housings.
Family 02 · 11 parts
Our original product line: gear racks, spur and helical gears, pinions, ring gears and splined parts, hobbed or shaped, hardened and ground to DIN 5–DIN 10.
Standard and custom spur, helical and cylindrical racks with matched pinions.

Coarse-module spur gear with machined hub and web.

Helical and spur rims on solid or splined hubs.

Single and double helical gears integral with the shaft.

Long gear shafts for rolling mills and heavy drives.

Drive pinions for girth gears and gearboxes.

Coarse-module spur gears with internal splines.

Planetary ring gears for wind and industrial gearboxes.

Large mill drive gear on the hobbing machine.

Toothed sensor disc with lightening holes.

Drive hub with internal spline and bolted flange.
Family 03 · 10 parts
Drivetrain and structural parts for gearboxes up to 20 MW and turbines up to 15 MW, machined on 50-tonne boring centers and inspected on a 5,000 mm CMM.

Gearbox housing with line-bored bearing seats.

Planetary carrier machined on 5-axis centers.

Torque arm with machined bores and mounting faces.

Large bearing housing for main-shaft support.

Assembled gearbox on the test stand.

Main shaft fitted with bearing housing.

Main shaft bearing assembly prepared for shipment.

Large flange with precision bolt circle.

Rotor magnetic ring with milled pole slots.

Welded generator frame machined to datum.
Family 04 · 14 parts
Large-diameter turned parts finished on vertical turn-mill centers to the Ø3,200 mm class, with bolt circles and slots completed in the same setup.

Large drilled mounting plate, machined and painted.

Clamping ring machined flat and parallel.

Square clamping plate with bore and pockets.

Grooved sleeve turned to precise taper.

Large piston turned and ground to seal fit.

Long bushing bored for heavy sliding duty.

Bronze bushing bored and turned.

Traction motor coupling flange.

Precision coupling hub with bolt pattern.

Grooved labyrinth seal ring.

Magnetic isolation press rings.

Thin-wall ring turned without distortion.

Large drilled and slotted turntable.

Disc with machined lightening pockets.
Family 05 · 17 parts
Weldments delivered as finished components: cut, formed, welded, stress-relieved, machined to datum and painted.

Welded, machined and painted housing.

Motor housing with machined feet and bores.

Welded stator frame bored after stress relief.

Fabricated frame with machined bore and pads.

Welded end housing with machined seats.

Welded split housing, line-bored.

Complex welded gear housing.

Welded bracket housing with bored seat.

Welded bearing bracket machined on two faces.

Formed and welded cover.

Rolled and welded panel with machined edges.

Large bed milled on gantry centers.

Heavy bracket with machined bores.

Long frame with machined slots.

Frame with five line-bored seats.

Ribbed support with machined faces.

Conical support turned and milled.
Family 06 · 17 parts
End shields, bearing seats, housings and rotors in cast iron, steel and aluminium for traction motors, generators and industrial drives.

Machined housing for rail traction motors.

Lightweight housing machined on 5-axis centers.

Cast aluminium cover with bearing seat.

Ribbed aluminium end shield.

Aluminium cover with machined faces.

Rotor with shaft turned to finish.

Ductile iron end shield turned and drilled.

Flat end shield with machined faces.

End shield with cooling fins.

Ribbed end shield with bearing bore.

Flanged shield with bolt pattern.

Machined cover with stepped bores.

Bearing cap turned and drilled.

Compact bearing housing with machined bore.

Bearing seat with bronze sleeve, CMM-checked.

Flanged seat with precision bores.

Slotted rotor housing turned and milled.
Family 07 · 21 parts
Pressure-retaining parts in carbon, stainless, duplex and super duplex 2507 steel for water, seawater, nuclear and process duty.

Double-volute casing in super duplex 2507.

Casing section with large suction bore.

Volute casing finished on machined datums.

Split-case pump casing with flanged nozzles.

Suction casing with internal splitter.

Heavy pump body machined on split line.

Cast volute casing with machined flange.

Pump bearing bracket with flanged seat.

Multistage diffuser casing.

Closed impellers, as-cast and machined.

Small casings with flanged inlets.

Pump casing and tee fitting.

Cast pump casing on the shop floor.

Cast volute casing.

Casing half machined on split line.

Machined pump housing with ports.

Four-way valve body with machined flanges.

Machined flanged valve body.

Precision ball for ball valves.

Precision sleeves turned and ground.

Flanged tee housing machined on three faces.
Family 08 · 18 parts
Casings, volutes, carriers and runners for compressors, blowers, steam turbines and hydro power units.

Upper half casing machined on the split line.

Lower half casing with stepped bores.

Guide vane carrier ring.

Spiral volute castings.

Open compressor cylinder castings.

Compressor body with machined ports.

Cast compressor casing.

Turned compressor cover.

Diffuser rings with vanes.

Volute casing with machined outlet.

Centrifugal blower assembled on base.

Ribbed casing with machined bores.

Pelton wheel with machined buckets.

Flanged cylinder for generator units.

Small spiral casing.

Machined vane segments.

Machined lever for guide vane linkage.

Machined clevis bracket.
Family 09 · 21 parts
Precision stainless rotating parts for decanter, disc-stack and pusher centrifuges, turned for concentricity and dynamically balanced.

Long cylindrical bowls turned in duplex stainless.

Bowl rotor with ports and journals.

Cylindrical and conical bowl tubes.

Flanged cylindrical bowl section.

Flanged conical section.

Conical bowl with bolted flange.

Conical bowl with internal ribs.

Long tapered bowl.

Heavy conical bowl turned to finish.

Turned bowl cylinder.

Bowl head with flange and journal.

Flanged end hub with splined shaft.

Large end hub disc.

Stepped hub shaft.

Stepped hub with flange.

Hub shaft with slotted flange.

Perforated pusher centrifuge basket.

Slotted and perforated basket.

Turned basket ring.

Disc separator bowl.

Machined ring forging on pallet.
Family 10 · 10 parts
Rotors, screens, conical housings and rolls for pulpers, refiners and paper machines, in stainless and duplex steels.

Pulper rotors with machined vanes.

Heavy pulper rotors and agitators.

Screen cylinder and long frame.

Conical screen and rotor.

Screw shaft and cast tank frame.

Flanged conical housing.

Polished cones and cylinders.

Conical refiner housings.

Large drilled suction roll shells.

Heat-resistant furnace roll.
Family 11 · 15 parts
Heavy castings and forgings for coal shearers, mining shovels, excavators and haul trucks, machined on large boring mills and vertical lathes.

Ranging arm housing for longwall shearers.

Ranging arm with bored gear seats.

Ranging arms ready for machining.

Shearer haulage gearbox housing.

Haulage box on the boring mill.

Machined haulage frame.

Planetary carrier for cutting drives.

Shearer trapping shoes in batch.

Breaker arm casting.

Shovel padlock links, painted.

Machined and painted rope sheave.

Boom and stick castings with bored seats.

Haul truck axle housings.

Haul truck wheel hub on the vertical lathe.

Haul truck spindles, primed.
Family 12 · 11 parts
Wear-critical heavy parts for cone and jaw crushers, vertical and coal mills, sinter plants, rotary kilns and rolling mills.

Cone crusher main frame.

Bowl with machined thread and seats.

Adjustment ring on base.

Crusher head with mantle fitted.

Crusher head and main shaft.

Jaw crusher pitman bored and milled.

Wearing ring for coal mills.

Liner segments for vertical mills.

Centre castings for sinter pallet cars.

Support roller with shaft.

Large mill roll on the lathe.
Family 13 · 9 parts
Idlers, drive tumblers, rollers and track shoes for crawler excavators, dozers and mining machines.

Machined and painted idler.

Idler with machined surface.

Idler with spline cut in the bore.

Assembled idlers ready for shipment.

Drive tumbler machined and painted.

Drive tumbler with internal spline.

Track shoes in production.

Machined track shoes in batch.

Track rollers in production.
Family 14 · 8 parts
Wear and pressure parts for dredgers, offshore and drilling equipment.

Large wear-resistant impeller.

Machined and painted sheave.

Cast pipe bends with machined flanges.

Blowout preventer bodies in machining.

Forged valve box with intersecting bores.

Machined valve blocks.

Flanged forged valve body.

Offshore accumulator shell.
Family 15 · 4 parts
Custom turning, welding and clamping fixtures that we build for our own production and supply to customers.

Fixture for stator housing turning.

Fixture for stator core assembly.

Hydraulic clamping fixture.

Spoked hub turned and drilled.
Custom parts to drawing
We reply with price, lead time and any manufacturability notes. Drawings are kept strictly confidential.