Malloy Wind

Solving problems in wind since 1998.

Upgraded bearings for gearboxes, blades, main shafts, and generators, backed by root cause failure analysis and parts on the shelf when a turbine is down.

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  • 1998In wind since
  • 40+Gearbox models stocked
  • 100%Wind team, wind only

Why operators call Malloy

  • Operational reliability

    Simply replacing a failed bearing is not a solution. Malloy works on root cause failure analysis to provide upgrades that improve long term reliability of your wind turbine fleet.

  • Fast response time

    When you need parts you need them fast. We understand that and will work to get you the best solution.

  • Knowledge of your application

    Our dedicated wind team spends 100% of their time working on wind turbine applications. No distractions, no compromise.

Parts and services

Bearings for every critical position in the turbine.

Bearing upgrades chosen for the failure mode you are seeing.

  • Wind turbine gearbox cutaway

    Gearbox Bearings

    Upgraded gearbox bearings in stock for over 40 gearbox models.

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  • Rendering of a 2-row 4-point contact slewing bearing used as a blade or pitch bearing

    Blade Bearings

    Upgraded blade (pitch) bearings for many platforms, with solutions for ellipse truncation, raceway failure, and ring cracking.

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  • Cutaway of a double row spherical roller bearing used in the main shaft position

    Main Shaft Bearings

    Upgrades with DLC on the rollers, special materials, and cage designs.

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  • Cutaway of a ceramic hybrid ball bearing used in wind turbine generators

    Generator Bearings

    Insulated coating or ceramic hybrid bearing options in stock for many wind turbine generators.

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  • A new blade bearing being picked for installation on a repower turbine

    Repower

    Restart the clock on your turbine life with the latest bearing technology on critical applications.

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  • Malloy CB1 replacement installed in a GE 1.5 turbine

    CB1 Retrofit

    Our CB1 retrofit for GE 1.5 turbines includes everything needed to make essentially a drop in replacement.

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An uptower bearing replacement underway on a GETS gearbox in a wind turbine

Root cause first

A failed bearing tells you what to fix next.

Main bearings spall and peel in a poor lubrication environment. Blade bearings crack through bolt holes and filling plugs. Gearbox bearings fail from white etching cracks. The replacement should answer the failure, not repeat it.

The Advanced Guides and Tech Notes on this site are written by Malloy's wind team, from failures they have taken apart and solutions they have put in the field.

Read the Advanced Guides Tech Notes

Who we work with

The top manufacturers in the business.

As a leading supplier of wind power transmission products, we only work with the best in the business.

  • NSK
  • IMO
  • SKF
  • MRC

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Tech Notes

Latest from the wind team.

  • Backlash and its importance in the pitch system of a wind turbine

    July 1, 2026

    Backlash and its importance in the pitch system of a wind turbine

    Setting the backlash of blade bearings during installation will help ensure proper system loading, minimize tooth, and generally contribute to the longest system life possible. This article shows how to identify where to set the backlash and what effect setting it can have.

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  • Separable CRB’s and Best Practices for Installation

    June 15, 2026

    Separable CRB’s and Best Practices for Installation

    A brief article describing roller drop, why it happens, and how to apply best practices to avoid causing any damage when installing this bearing type.

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  • What to know when purchasing Duplex Bearing Sets

    March 19, 2026

    What to know when purchasing Duplex Bearing Sets

    Understanding how many bearings to purchase and the advantages of duplex bearings is important when performing repairs on wind turbine gearboxes. This article introduces the benefits of duplex bearings while being focused on helping identify the correct quantity of bearings needed and understanding the contents and labeling of the bearings found inside the crate.

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Turbine down? Tell us the platform and position.

We will check stock and send a quote. Call 605.336.3693 if it cannot wait.

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