Wind Power Main Shafts
Forged main shafts couplings and bearing blanks for turbine drivetrains
What Wind Power Main Shafts Is and Who It Is For
A wind turbine main shaft carries axial and radial loads that change continuously while the turbine operates, so the forging has to be sound through the section and heat treated to a consistent condition. Tianhao forges main shafts, couplings for high torque and high speed transmission, and blanks for pitch, yaw and main hub bearings.
Key Benefits
- Forged and heat treated for loads that reverse through every rotation
- Couplings sized for high torque and high speed transmission duty
- Pitch, yaw and main hub bearing blanks from the same programme
- Machining on the 5-axis centre for flange faces and bolt circles
| Wind power materials | 4140, 4340, S355NL, S420NL, 42CrMo4, 18CrNiMo7-6, 30CrNiMo8, 34CrNiMo6, A350-LF6, 1552 |
|---|---|
| Scope | gears, flanges, main shafts, couplings, transmission tower flanges, bearings |
| Delivery conditions | forged, normalised, rough machined, quenched, tempered |
| Machining | 5-axis CNC machining centre |
Who It Is For
- Turbine drivetrain manufacturers
- Bearing makers buying forged blanks
- Wind farm maintenance contractors
Problems It Solves
- Shafts with internal unsoundness fail in service at the worst possible location
- Bearing blanks with inconsistent hardness give short raceway life
- Replacement drivetrain parts have long lead times from original suppliers
Technical Features
- Forged main shafts for axial and radial load
- Couplings for high torque and high speed transmission
- Bearing blanks for pitch, yaw and main hub positions
- Heat treatment and machining in house
Where Wind Power Main Shafts Is Used
Main shafts in turbine drivetrains
Main shafts in turbine drivetrains
Couplings between gearbox and generator
Couplings between gearbox and generator
Pitch, yaw and main hub bearing blanks
Pitch, yaw and main hub bearing blanks
Drivetrain replacement parts
Drivetrain replacement parts
Materials
- 42CrMo4
- 34CrNiMo6
- 4140
- 4340
- 30CrNiMo8
Quality Control
- Testing included in the value added service package
- Hardness and dimensional checks after heat treatment
- Material certificate per heat
Customization Options
- Shaft geometry to the drivetrain drawing
- Bearing seat tolerances to the bearing maker's specification
- Couplings matched to the torque and speed
How We Make It
Load case
Load case and drawing review
Open die forging
Quench
Quench and temper
Rough machining
Finish machining of flange
Finish machining of flange and bearing seats
Testing
Testing and inspection
How It Compares
Our materials and processes provide solutions for high torque and high speed coupling needs, where a fabricated coupling would need welds directly in the torque path.
Use Guide
- Give the axial and radial load case with the drawing
- Specify the bearing seat tolerance class required
- Confirm any non destructive testing required before shipment
Often Ordered Together
Wind Power Gear Rings
Forged rings for wind turbine gears in case and through hardening grades
View details
Wind Power Flanges
Tower flanges and transmission tower flanges forged for the life of the structure
View details
Forged Step Shafts
Stepped shafts gear shafts and spline gear shafts forged in alloy steel
View detailsWhere To Read More
Questions Buyers Ask About Wind Power Main Shafts
Which loads are the shafts designed for?
Forged shafts capable of withstanding axial and radial loads which continuously change during turbine operation.
Do you supply bearing blanks?
Yes, for pitch, yaw and main hub bearing needs.
Are couplings part of the programme?
Yes, for high torque and high speed transmission needs.
Get a Quote for Wind Power Main Shafts
Send the drawing, the quantity and the delivery condition you need. We reply with price, lead time and a sample plan.