Shaft forgings

Large & Custom Shaft Forgings

Open-die forged solid, hollow, stepped and rotor shafts for power generation, marine, mining and heavy industrial equipment.

Large forged shaft installed on heavy machining equipment in the Yongxinsheng workshop

Shaft forging product types

Manufacturing routes
by shaft geometry.

Shaft configuration, section changes, material, heat treatment, machining allowance and inspection level are reviewed as one manufacturing route. These are custom manufacturing capabilities, not stocked catalogue products.

Solid Shaft Forgings

Open-die forged solid shafts supplied as-forged, rough machined or finish machined to an approved drawing.

Hollow Shaft Forgings

Hollow shafts reviewed against bore geometry, wall section, heat-treatment response and machining route.

Stepped Shafts

Multiple-diameter shaft forgings produced with controlled forging stock for subsequent machining.

Rotor Shafts

Rotor shaft forgings planned around soundness, mechanical properties, dimensional control and NDT requirements.

Gear Shafts

Forged shaft blanks for geared transmission systems with project-specific material and heat treatment.

Pinion Shafts

Heavy pinion shaft forgings supplied with suitable machining allowance and inspection coverage.

Marine Shafts

Propulsion and equipment shaft forgings manufactured to the applicable drawing, testing and documentation requirements.

Custom Heavy Shafts

Drawing-specific shaft forgings for heavy rotating, power-transmission and industrial equipment.

Manufacturing range

Drawing-specific
shaft capability review.

No unverified length, diameter, bore or weight limits are published. Engineering confirms feasibility from the shaft drawing, material grade, section transitions, final properties, machining route and inspection requirements.

Specification basisProject
dependent

Send overall length, maximum diameter, bore where applicable, material, quantity and required testing for technical review.

Overall Length: Project dependent — contact engineering
Maximum Diameter: Project dependent — contact engineering
Bore / ID: Project dependent — contact engineering where applicable
Unit Weight: Project dependent — contact engineering
Material: Confirmed against geometry, section and property requirements
Heat Treatment: Specified per material and required mechanical properties
Machining: As-forged / rough machined / finish machined, subject to drawing review
Straightness / Dimensions: Confirmed against approved drawing and agreed inspection stage
Inspection: UT / MT / PT / PMI and dimensional inspection as specified

Materials

Representative shaft
forging material families.

Material availability depends on shaft geometry, section size, heat-treatment route, mechanical properties and sourcing. Final grade acceptance is confirmed during engineering review.

Carbon Steel

C45 / project-specified grades

Alloy Steel

42CrMo4 / AISI 4140 · 34CrNiMo6 · 18CrNiMo7-6

Stainless Steel

ASTM A182 F304 / F316 / F316L

Duplex Stainless Steel

ASTM A182 F51 / 2205

High-Temperature Alloy Steel

ASTM A182 F91 / F92

Listing a representative grade does not imply availability for every shaft geometry or section size.

Manufacturing process

Controlled shaft route
from billet to shipment.

The production route and inspection hold points are established from the drawing, purchase specification, material grade and project ITP.

Raw Material→Heating→Open-Die Forging→Drawing & Forming→Heat Treatment→Machining→NDT→Final Inspection→Shipment

Hydraulic forging press forming a large shaft blank — **Open-die forging**Controlled heating, upsetting and drawing to establish the shaft section.

Large forged shaft on heavy machining equipment — **Heavy shaft machining**Turning, facing and staged dimensional control to the approved route.

Heavy forgings during heat treatment handling — **Heat treatment**Project-specific furnace cycle selected for grade and property requirements.

NDT and PMI inspection of forged components — **Inspection & release**NDT, material verification and dimensional records before shipment.

Large forged shaft under heavy machining — Heavy shaft machining and dimensional control

Manufacturing equipment

Forging power and
shaft-processing control.

15,000THydraulic forging press capacity

8,000THydraulic forging press capacity

Open-die forgingLarge shaft drawing and section-forming capability

Heat treatmentIn-house furnace capability

Heavy machiningLarge shaft turning, facing and boring equipment

Quality & inspection

Soundness, properties
and dimensional control.

Inspection procedures, coverage, acceptance criteria and reporting are agreed before production. Testing is performed according to the purchase specification and approved ITP.

UTUltrasonic testing

MTMagnetic particle testing

PTLiquid penetrant testing

PMIPositive material identification

HARDNESSHardness testing where specified

DIMStraightness and dimensional inspection

LABChemical / mechanical testing where required

3.1EN 10204 3.1 documentation

Applications

Shaft forgings by
equipment duty.

Application review connects torque, rotation, loading and service conditions with material, heat treatment, machining, inspection and documentation.

Power Generation

Rotor shafts, generator shafts and turbine-related rotating components.

Oil & Gas

Compressor, pump and heavy equipment shafts manufactured to project specifications.

Mining & Heavy Equipment

Crusher shafts, mill shafts, gear shafts and high-load transmission components.

Marine & Offshore

Propulsion, drive and equipment shafts with project-specific inspection.

Industrial Machinery

Custom stepped, hollow and solid shafts for OEM machinery.

Heavy Transmission

Pinion, gear and drive shaft forgings for high-load power transmission.

Engineering RFQ

Send the shaft requirement
for technical review.

Provide the finished or rough-machined drawing, material specification, quantity, heat treatment, straightness, machining and inspection requirements.

Confidential drawing handling · NDA support available before submission.