Spare parts - AVRs and Bearings
Spare Parts
  • Descripción
  • FAQ

Genuine Leroy-Somer™ & Kato Engineering™ Alternator Spare Parts & Electronic Solutions

Keep your power systems running with genuine Nidec Power spare parts.
We supply and deliver OEM-certified alternator spare parts designed to ensure reliability, performance and long service life of your equipment - even in the most demanding applications.

From bearings and electronic regulators to sensors and mechanical components, our experts help you secure the right parts, at the right time, with full OEM compliance.

Genuine Alternator Spare Parts (OEM)

We provide a complete range of genuine alternator spare parts, including:

  • Bearings and bushings
  • AVR (Automatic Voltage Regulators)
  • DVR (Digital Voltage Regulators)
  • CT & PT sensors
  • Mechanical and electronic alternator components

All parts are:

  • OEM-tested and approved
  • Fully compatible with Leroy-Somer & Kato Engineering alternators
  • Qualified to meet original performance and safety standards

 

Why it matters: using non-original parts can lead to premature failures, unstable operation and costly downtime.

Request a spare parts quote

Emergency Spare Parts Delivery & On‑Site Readiness

We can ship qualified spare parts directly to your site for emergency replacement (bearings, bushings, CTs, PTs, AVR, etc.).

However, based on field experience, we strongly recommend keeping critical spare parts on-site.

Filed-proven expertise

Our recommendations are based on decades of field experience, Static and dynamic inspections and real‑world operating conditions.

During yearly inspections, our teams:

  • Check compatibility and storage conditions
  • Help you prevent emergency shutdowns and production losses
  • Verify spare parts availability

 

Leroy-Somer & Kato Engineering Bearings: Performance Without Compromise

Why Choose Geniune Bearings?

Bearing failure can cause severe damage to the entire alternator.

That is why Leroy-Somer and Kato Engineering bearings are:

  • Specifically designed for each alternator model
  • Selected to maximize lifespan and operational stability
  • Manufactured with strict tolerances, materials and centering accuracy

Watch out: Third-party bearings may look similar, but differences in design or tolerances can result in:

  • Abnormal vibration
  • Reduced efficiency
  • Early failure

Don’t leave your generator continuous operation to chance.
Get expert advice on bearing selection

Bearing Maintenance & Best Practices

Did you know?
Over 80% of rolling bearing failures worldwide are linked to improper lubrication.
To protect your installation:

  • Follow OEM lubrication guidelines
  • Use the same grease type as used in the factory
  • Replace bearings in non‑regreasable housings when required

Our teams can support you with maintenance recommendations and inspections.

Electronic Solutions: AVR & DVR Regulators

Our AVR (Analog Voltage Regulator) and DVR (Digital Voltage Regulator) solutions ensure:

  • Stable voltage regulation
  • Enhanced installation safety
  • Long product life cycles
  • Easy upgrade paths between models

We also provide:

  • Replacement studies
  • Modification drawings
  • On-site installation and commissioning

A complete solution from engineering to field execution.

Contact our team for regulator replacement

All Your Alternator Spare Parts, One OEM Partner

Whether you need:

  • Original parts installed at factory
  • Spare parts for upgrades or retrofits

Our engineering office supports you in identifying, supplying and implementing the right solution - fully aligned with OEM specifications.

Request a spare parts quote

Frequently Asked Questions

Are genuine alternator spare parts really necessary?
 Yes. Genuine spare parts are designed, tested and approved to match the original alternator specifications. Non‑OEM parts may cause instability, reduced lifespan or unexpected failures.

What is the difference between OEM and third‑party bearings?
 OEM bearings are selected based on exact tolerances, materials and operating conditions. Third‑party bearings may differ in centering, design or metallurgy, increasing the risk of early failure.

Can you deliver spare parts urgently?
 Yes. We can ship qualified spare parts directly to your site for emergency replacement. However, we strongly recommend keeping critical parts on‑site to reduce downtime.

How do I know which spare parts to stock?
 During yearly inspections, our teams verify critical spare parts, assess risks and recommend optimized on‑site stock levels.

Can you replace or upgrade AVR and DVR regulators?
 Yes. We provide replacement kits, compatibility checks, modification drawings and on‑site installation.