Wind Power Gear Rings
Forged rings for wind turbine gears in case and through hardening grades
What Wind Power Gear Rings Is and Who It Is For
Forged rings for wind turbine gearing are supplied in the case hardening and through hardening grades the drivetrain designers rely on, including 42CrMo4, 34CrNiMo6, 18CrNiMo7-6 and 30CrNiMo8. The ring is rolled seamless so the grain runs around the circumference, which is what the tooth root needs under reversing load.
Key Benefits
- Grades matched to whether the gear is case or through hardened
- Seamless rolled construction for hoop strength at the tooth root
- Rough or semi machined delivery to suit your gear cutting line
- Same supplier can cover flanges, main shafts and bearing blanks
| Gear grades | 42CrMo4, 34CrNiMo6, 18CrNiMo7-6, 30CrNiMo8 |
|---|---|
| Wind power materials | 4140, 4340, S355NL, S420NL, 42CrMo4, 18CrNiMo7-6, 30CrNiMo8, 34CrNiMo6, A350-LF6, 1552 |
| Hardening | case or through hardening |
| Machining | CNC machining centre including 5-axis |
Who It Is For
- Wind gearbox manufacturers
- Turbine component suppliers
- Gear cutting shops buying blanks
Problems It Solves
- Ring blanks with poor grain flow crack at the tooth root
- Blank distortion after carburising scraps machined gears
- Long blank lead times hold up the gear cutting schedule
Technical Features
- Case hardening and through hardening grades
- Seamless rolled rings
- Heat treatment in house
- Machining before gear cutting
Where Wind Power Gear Rings Is Used
Ring gears in wind turbine gearboxes
Ring gears in wind turbine gearboxes
Yaw and pitch ring blanks
Yaw and pitch ring blanks
Annulus rings for planetary stages
Annulus rings for planetary stages
Materials
- 42CrMo4
- 34CrNiMo6
- 18CrNiMo7-6
- 30CrNiMo8
Quality Control
- Dimensional check after heat treatment
- Material certificate per heat
- Testing supplied with the value added service package
Customization Options
- Rolled ring section to your blank drawing
- Heat treatment condition set for your carburising or nitriding route
- Machining allowance agreed before production
How We Make It
Ring drawing review
Billet upsetting
Billet upsetting and piercing
Ring rolling
Normalising or quench
Normalising or quench and temper
Rough or semi machining
Inspection
How It Compares
Compared with a plate cut or welded blank, a rolled ring gives continuous circumferential grain flow, which is the reason wind gearing is specified as forged rings in the first place.
Use Guide
- State the hardening route so the grade and condition are compatible
- Agree the machining allowance for distortion after heat treatment
- Send the gear drawing as well as the blank drawing where possible
Often Ordered Together
Wind Power Flanges
Tower flanges and transmission tower flanges forged for the life of the structure
View details
Wind Power Main Shafts
Forged main shafts couplings and bearing blanks for turbine drivetrains
View details
Seamless Rolled Rings
Rolled rings for gears bearings flanges and tooling in alloy and stainless grades
View detailsWhere To Read More
Questions Buyers Ask About Wind Power Gear Rings
Which grades do you supply for wind gears?
42CrMo4, 34CrNiMo6, 18CrNiMo7-6 and 30CrNiMo8, with rich experience in both case and through hardening applications.
Are blanks supplied machined?
They can be supplied rough, semi machined or machined, depending on your gear cutting line.
Do you also supply flanges and main shafts?
Yes, flanges, main shafts, couplings and bearing blanks are part of the wind power programme.
Get a Quote for Wind Power Gear Rings
Send the drawing, the quantity and the delivery condition you need. We reply with price, lead time and a sample plan.