Xiagang Industrial Park, Jiangyin City, Jiangsu Province, China
Heavy machining hall at Songyan Machinery
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Product Catalogue

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.

206Part types shown
15Part families
1–30,000 kgWeight per piece
Ø3,200 mmTurning diameter

Family 01 · 20 parts

Shafts & Rotors

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.

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

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
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Welded rotor shafts, 4 MW: Welded and machined rotor shaft for wind generators, stress-relieved before final turning

Welded rotor shafts, 4 MW

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

Material
S355, 42CrMo4
Process
Welding, stress relief, turning
Size
Ø470 × 2,850 mm
Used in
Wind generators
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Welded rotor shafts, 6 MW: Large welded rotor shaft with machined flanges and bearing seats

Welded rotor shafts, 6 MW

Large welded rotor shaft with machined flanges and bearing seats.

Material
S355, alloy steel
Process
Welding, stress relief, turning
Used in
Wind generators
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High-voltage motor shafts: Forged shaft with integral flange, ground on bearing and coupling seats

High-voltage motor shafts

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

Material
42CrMo4, 4340
Process
Forging, turning, grinding
Size
Ø370 × 1,297.5 mm
Used in
HV motors, generators
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Traction motor shafts: Rail traction motor shaft with ground journals and keyways

Traction motor shafts

Rail traction motor shaft with ground journals and keyways.

Material
42CrMo4, 34CrNiMo6
Process
Forging, turning, grinding
Size
Ø155 × 686.5 mm
Used in
Rail traction motors
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High-speed train shafts: Precision shaft for high-speed rail drive units

High-speed train shafts

Precision shaft for high-speed rail drive units.

Material
EA4T, 42CrMo4
Process
Turning, grinding, MT
Size
Ø100 × 630 mm
Used in
High-speed rail
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E-bus motor shafts: Splined motor shaft for electric bus drive systems

E-bus motor shafts

Splined motor shaft for electric bus drive systems.

Material
42CrMo4, 20CrMnTi
Process
Turning, hobbing, grinding
Size
Ø118 × 570 mm
Used in
Electric vehicles
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Gear shafts: Forged gear shaft with integral teeth, hobbed and ground

Gear shafts

Forged gear shaft with integral teeth, hobbed and ground.

Material
18CrNiMo7-6, 42CrMo4
Process
Forging, hobbing, grinding
Size
Ø280 × 1,230 mm
Used in
Industrial gearboxes
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Gearbox spline shafts: Hollow shaft with internal spline for gearbox output stages

Gearbox spline shafts

Hollow shaft with internal spline for gearbox output stages.

Material
42CrMo4
Process
Boring, broaching, turning
Size
Ø300 × 650 mm
Used in
Gearboxes
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Output rotor shafts: Inner-taper output rotor shaft with external splines

Output rotor shafts

Inner-taper output rotor shaft with external splines.

Material
42CrMo4, 18CrNiMo7-6
Process
Turning, hobbing, grinding
Size
Ø240 × 690 mm
Used in
Traction drives
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Eccentric shafts: Eccentric shaft turned on offset centers and ground

Eccentric shafts

Eccentric shaft turned on offset centers and ground.

Material
42CrMo4
Process
Turning, grinding
Size
Ø200 × 465 mm
Used in
Presses, crushers
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Hollow shafts: Thick-wall hollow shaft bored and turned concentric to tight runout

Hollow shafts

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

Material
42CrMo4
Process
Deep boring, turning
Size
Ø240/180 × 340 mm
Used in
Motors, couplings
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Splined hollow shafts: Hollow shaft with external spline and flange

Splined hollow shafts

Hollow shaft with external spline and flange.

Material
42CrMo4
Process
Boring, hobbing, turning
Size
Ø345/215 × 700 mm
Used in
Gearboxes
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Grooved hollow shafts: Hollow shaft with machined grooves and slots

Grooved hollow shafts

Hollow shaft with machined grooves and slots.

Material
Forged steel
Process
Turning, slot milling
Size
Ø314/235 × 295 mm
Used in
Motors
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Buffer tubes: Long thin-wall tube bored and turned to close tolerance

Buffer tubes

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

Material
Alloy steel
Process
Deep boring, turning
Size
Ø165 × 790 mm
Used in
Rail equipment
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Crusher roll main shafts: Square-section shaft with milled flats and turned journals

Crusher roll main shafts

Square-section shaft with milled flats and turned journals.

Material
42CrMo4, 34CrNiMo6
Process
Forging, milling, turning
Size
445 × 445 × 5,275 mm
Used in
Roller crushers
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Pin shafts: Heavy-duty pin shaft, induction-hardened and ground

Pin shafts

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

Material
42CrMo4, 40Cr
Process
Turning, hardening, grinding
Size
Ø200 × 450 mm
Used in
Mining, construction
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Injection spiral dispensers: Spiral component with 5-axis milled flights

Injection spiral dispensers

Spiral component with 5-axis milled flights.

Material
Alloy steel, stainless
Process
5-axis milling, grinding
Size
Ø200 × 355 mm
Used in
Plastics machinery
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Heavy mill shafts: Large stepped shaft turned on heavy-duty lathes

Heavy mill shafts

Large stepped shaft turned on heavy-duty lathes.

Material
42CrMo4, 34CrNiMo6
Process
Heavy turning, grinding
Used in
Metallurgy, cement
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Shaft & bearing units: Main shaft assembled with machined bearing housings

Shaft & bearing units

Main shaft assembled with machined bearing housings.

Material
Alloy steel, ductile iron
Process
Machining, assembly
Used in
Wind, mining
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Family 02 · 11 parts

Gears & Gear Racks

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.

MODULE 0.5 – 36

Gear racks

Standard and custom spur, helical and cylindrical racks with matched pinions.

Material
C45, 42CrMo, stainless, brass, nylon
Process
Milling, hobbing, hardening, grinding
Size
Module 0.5–36
Used in
CNC machines, hoists, cranes
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Large spur gears: Coarse-module spur gear with machined hub and web

Large spur gears

Coarse-module spur gear with machined hub and web.

Material
42CrMo4, cast steel
Process
Turning, hobbing, Q&T
Used in
Mills, kilns, winches
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Gear wheels with hub: Helical and spur rims on solid or splined hubs

Gear wheels with hub

Helical and spur rims on solid or splined hubs.

Material
42CrMo4, cast steel
Process
Hobbing, induction hardening
Used in
Heavy drives
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Helical gear shafts: Single and double helical gears integral with the shaft

Helical gear shafts

Single and double helical gears integral with the shaft.

Material
18CrNiMo7-6, 20CrMnTi
Process
Hobbing, carburizing, grinding
Used in
Industrial gearboxes
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Long gear shafts: Long gear shafts for rolling mills and heavy drives

Long gear shafts

Long gear shafts for rolling mills and heavy drives.

Material
34CrNiMo6, 42CrMo4
Process
Turning, hobbing, grinding
Used in
Rolling mills
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Pinion shafts: Drive pinions for girth gears and gearboxes

Pinion shafts

Drive pinions for girth gears and gearboxes.

Material
42CrMo4, 34CrNiMo6
Process
Hobbing, induction hardening
Used in
Girth gear drives
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Splined-bore gears: Coarse-module spur gears with internal splines

Splined-bore gears

Coarse-module spur gears with internal splines.

Material
42CrMo4, 20CrMnTi
Process
Hobbing, broaching
Used in
Transmissions
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Internal ring gears: Planetary ring gears for wind and industrial gearboxes

Internal ring gears

Planetary ring gears for wind and industrial gearboxes.

Material
42CrMo4, 34CrNiMo6
Process
Turning, shaping, hardening
Size
Gearboxes ≤ 15 MW
Used in
Wind gearboxes
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Mill drive gears: Large mill drive gear on the hobbing machine

Mill drive gears

Large mill drive gear on the hobbing machine.

Material
Cast or forged steel
Process
Hobbing, heat treatment
Used in
Metallurgy, cement
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Speed sensor gear discs: Toothed sensor disc with lightening holes

Speed sensor gear discs

Toothed sensor disc with lightening holes.

Material
Alloy steel
Process
Turning, hobbing
Size
Ø190 × 61.5 mm
Used in
Rail traction
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Splined drive hubs: Drive hub with internal spline and bolted flange

Splined drive hubs

Drive hub with internal spline and bolted flange.

Material
42CrMo4
Process
Turning, broaching, drilling
Size
Ø339/120 × 223 mm
Used in
Drive trains
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Family 03 · 10 parts

Wind Power Components

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 middle housings: Gearbox housing with line-bored bearing seats

Gearbox middle housings

Gearbox housing with line-bored bearing seats.

Material
Ductile iron
Process
Horizontal boring, milling
Size
Gearboxes ≤ 20 MW
Used in
Wind turbines
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Planet carriers: Planetary carrier machined on 5-axis centers

Planet carriers

Planetary carrier machined on 5-axis centers.

Material
Ductile iron, cast steel
Process
5-axis machining, boring
Size
Gearboxes ≤ 20 MW
Used in
Wind gearboxes
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Torque arms: Torque arm with machined bores and mounting faces

Torque arms

Torque arm with machined bores and mounting faces.

Material
Ductile iron
Process
Boring, milling
Size
Gearboxes ≤ 20 MW
Used in
Wind turbines
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Main bearing housings: Large bearing housing for main-shaft support

Main bearing housings

Large bearing housing for main-shaft support.

Material
Ductile iron, cast steel
Process
Boring, milling, drilling
Size
Turbines ≤ 15 MW
Used in
Wind turbines
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Connection flanges: Large flange with precision bolt circle

Connection flanges

Large flange with precision bolt circle.

Material
S355NL, 42CrMo4
Process
Ring rolling, turning, drilling
Size
Φ1,840/Φ1,120 × 190 mm
Used in
Towers, drivetrains
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Generator rotor rings: Rotor magnetic ring with milled pole slots

Generator rotor rings

Rotor magnetic ring with milled pole slots.

Material
Forged steel
Process
Vertical turning, slot milling
Size
Φ2,130/Φ1,560 × 650 mm
Used in
Wind generators
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Family 04 · 14 parts

Rings, Flanges, Discs & Bushings

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.

Mounting plates: Large drilled mounting plate, machined and painted

Mounting plates

Large drilled mounting plate, machined and painted.

Material
S355, Q355
Process
Turning, drilling
Size
Ø1,700/Ø1,000 × 130 mm
Used in
Generators, gearboxes
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Stator clamping plates: Clamping ring machined flat and parallel

Stator clamping plates

Clamping ring machined flat and parallel.

Material
Q355
Process
Turning, milling
Size
Ø805 × 800 × 65 mm
Used in
Electric motors
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Square clamping plates: Square clamping plate with bore and pockets

Square clamping plates

Square clamping plate with bore and pockets.

Material
Q355
Process
Milling, boring
Size
510 × 510 × 70 mm
Used in
Electric motors
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Taper sleeves: Grooved sleeve turned to precise taper

Taper sleeves

Grooved sleeve turned to precise taper.

Material
42CrMo4
Process
Turning, grooving
Size
Ø855 × 700 mm
Used in
Crushers, couplings
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Hydraulic pistons: Large piston turned and ground to seal fit

Hydraulic pistons

Large piston turned and ground to seal fit.

Material
Forged alloy steel
Process
Turning, grinding, chrome plating
Size
Φ1,420 × 1,150 mm
Used in
Injection moulding machines
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Wear-resistant bushings: Long bushing bored for heavy sliding duty

Wear-resistant bushings

Long bushing bored for heavy sliding duty.

Material
Alloy steel
Process
Deep boring, turning
Size
Ø520 × 1,320 mm
Used in
Presses, mining
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Copper alloy bushings: Bronze bushing bored and turned

Copper alloy bushings

Bronze bushing bored and turned.

Material
C93200, C95400
Process
Turning, boring
Size
Ø245/217 × 216 mm
Used in
Bearings
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Coupling flanges: Traction motor coupling flange

Coupling flanges

Traction motor coupling flange.

Material
42CrMo4
Process
Turning, drilling, grinding
Size
Ø434 × 165 mm
Used in
Locomotives
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Coupling hubs: Precision coupling hub with bolt pattern

Coupling hubs

Precision coupling hub with bolt pattern.

Material
42CrMo4
Process
Turning, drilling
Size
Ø265 × 135 mm
Used in
Motors, pumps
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Labyrinth rings: Grooved labyrinth seal ring

Labyrinth rings

Grooved labyrinth seal ring.

Material
Alloy steel, stainless
Process
Turning, grooving
Size
Ø269 × 163 mm
Used in
Motors, turbines
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Press rings: Magnetic isolation press rings

Press rings

Magnetic isolation press rings.

Material
Stainless, non-magnetic steel
Process
Turning
Size
Ø320 × 55 mm
Used in
Electric motors
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Turntables: Large drilled and slotted turntable

Turntables

Large drilled and slotted turntable.

Material
S355, cast steel
Process
Vertical turning, drilling
Size
Ø3,000 mm class
Used in
Rotary equipment
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Family 05 · 17 parts

Welded Housings, Frames & Fabrications

Weldments delivered as finished components: cut, formed, welded, stress-relieved, machined to datum and painted.

Family 06 · 17 parts

Motor, Rail & Bearing Components

End shields, bearing seats, housings and rotors in cast iron, steel and aluminium for traction motors, generators and industrial drives.

Traction motor housings: Machined housing for rail traction motors

Traction motor housings

Machined housing for rail traction motors.

Material
Cast steel, ductile iron
Process
Boring, milling
Used in
Rail transit
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Locomotive bearing seats: Bearing seat with bronze sleeve, CMM-checked

Locomotive bearing seats

Bearing seat with bronze sleeve, CMM-checked.

Material
Cast steel, bronze
Process
Turning, boring
Used in
Locomotives
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Rotor housings: Slotted rotor housing turned and milled

Rotor housings

Slotted rotor housing turned and milled.

Material
Forged steel
Process
Turning, slot milling
Size
Ø480 × 450 mm
Used in
Motors
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Family 07 · 21 parts

Pump & Valve Parts

Pressure-retaining parts in carbon, stainless, duplex and super duplex 2507 steel for water, seawater, nuclear and process duty.

Super duplex pump casings: Double-volute casing in super duplex 2507

Super duplex pump casings

Double-volute casing in super duplex 2507.

Material
Super duplex 2507
Process
Boring, milling
Used in
Seawater, nuclear pumps
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Super duplex casing sections: Casing section with large suction bore

Super duplex casing sections

Casing section with large suction bore.

Material
Super duplex 2507
Process
Boring, facing
Used in
Seawater pumps
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Axially split casings: Split-case pump casing with flanged nozzles

Axially split casings

Split-case pump casing with flanged nozzles.

Material
Super duplex 2507
Process
Split-line milling, boring
Used in
Seawater, nuclear pumps
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Family 08 · 18 parts

Compressor, Turbine & Hydro Parts

Casings, volutes, carriers and runners for compressors, blowers, steam turbines and hydro power units.

Turbine casings, upper half: Upper half casing machined on the split line

Turbine casings, upper half

Upper half casing machined on the split line.

Material
Cast steel
Process
Horizontal boring
Used in
Steam turbines
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Family 09 · 21 parts

Centrifuge & Separation Parts

Precision stainless rotating parts for decanter, disc-stack and pusher centrifuges, turned for concentricity and dynamically balanced.

Decanter bowl shells: Long cylindrical bowls turned in duplex stainless

Decanter bowl shells

Long cylindrical bowls turned in duplex stainless.

Material
Duplex 2205, 316L
Process
Long-bore turning
Used in
Decanter centrifuges
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Family 10 · 10 parts

Pulp & Paper Parts

Rotors, screens, conical housings and rolls for pulpers, refiners and paper machines, in stainless and duplex steels.

Family 11 · 15 parts

Mining Machinery Parts

Heavy castings and forgings for coal shearers, mining shovels, excavators and haul trucks, machined on large boring mills and vertical lathes.

Family 12 · 11 parts

Crusher, Mill & Metallurgy Parts

Wear-critical heavy parts for cone and jaw crushers, vertical and coal mills, sinter plants, rotary kilns and rolling mills.

Family 13 · 9 parts

Undercarriage & Construction Parts

Idlers, drive tumblers, rollers and track shoes for crawler excavators, dozers and mining machines.

Family 14 · 8 parts

Dredging & Oil and Gas Parts

Wear and pressure parts for dredgers, offshore and drilling equipment.

Family 15 · 4 parts

Fixtures & Tooling

Custom turning, welding and clamping fixtures that we build for our own production and supply to customers.

Custom parts to drawing

Need a part like these? Send us your drawing.

We reply with price, lead time and any manufacturability notes. Drawings are kept strictly confidential.