Marathon Alternator Parts for Diesel Generators
Marathon Electric (now part of Regal Rexnord) manufactures high-quality alternators for standby and prime power generator applications. Known for their robust design and excellent motor starting capability, Marathon alternators are widely used across North America and global markets. At Huaquan Power, we supply a comprehensive range of Marathon alternator parts for MP and MAX series alternators used in generator sets from 5kVA to 2000kVA.
AVR and Voltage Regulation
- Automatic Voltage Regulators — Marathon SE350, SE500, DVR2000, and Marathon-Digital AVR units
- Droop Transformers — Quadrature droop current transformers for parallel operation
- Remote Voltage Adjustment — External voltage adjustment potentiometers and accessories
- AVR Protection Components — Fuses, crowbar circuits, and overvoltage protection modules
Rotating Diode and Excitation Parts
- Rotating Diode Assemblies — Complete rectifier wheel assemblies for MP and MAX series alternators
- Individual Diodes — Positive and negative rectifier diodes for component replacement
- Surge Suppressors — Varistor assemblies protecting diodes from voltage transients
- Excitation Components — Exciter stators, rotors, and permanent magnet generators
Stator and Rotor Components
- Stator Assemblies — Complete wound stator assemblies for Marathon alternators
- Main Rotors — Balanced main rotor assemblies for direct replacement
- Bearings — Drive-end and non-drive-end bearings for all Marathon alternator models
- Bearing Caps and Retainers — Bearing housing caps, retainers, and grease seals
Terminal Box and Electrical Components
- Terminal Blocks — Main output terminal boards and connection hardware
- Current Transformers — Metering and protection CTs for alternator monitoring
- Anti-Condensation Heaters — Space heaters for moisture prevention during standby
- Cable Entry Glands — IP55 cable entry components for weather-protected installations
Mechanical and Cooling Parts
- Cooling Fans — Internal and external fan assemblies for proper alternator cooling
- Adaptor Kits — SAE flywheel housing adaptor kits and coupling discs
- Vibration Isolators — Rubber mounts and spring isolators for generator set vibration control
- Air Filters and Guards — Air intake filters and rotating parts guards for safety compliance
Frequently Asked Questions
1. What Marathon alternator models do you support?
We supply parts for Marathon MP series (5-150kVA) and MAX series (150-2000kVA) alternators. This includes MP4, MP5, MP7, MAX40, MAX50, MAX60, and larger frame sizes. We also support the older MagnaPlus and Pancake series.
2. What AVR does my Marathon alternator use?
MP series alternators typically use the SE350 AVR, while MAX series alternators use the SE500 or DVR2000+ digital AVR. The DVR2000+ offers advanced features including programmable protection, VAR/PF control, and communication capabilities. Check your alternator nameplate for the standard AVR reference.
3. Are Marathon alternator parts interchangeable with Stamford?
While some components (bearings, diodes) may share standard sizes, most Marathon parts are specific to Marathon alternator designs. AVRs, stator assemblies, and rotor assemblies are not interchangeable between brands. Always use model-specific parts for proper operation.
4. Do you stock Marathon alternator bearings?
Yes, we carry bearings for all Marathon alternator models. Common sizes include 6307, 6308, 6310, 6312, and 6314 series bearings. We supply both sealed and open-type bearings depending on your alternator’s lubrication system.
5. What warranty do you offer on Marathon alternator parts?
Genuine Marathon parts carry the manufacturer’s standard warranty. Our aftermarket replacement parts come with a 12-month warranty. We stand behind the quality of all parts we supply with full technical support.
Contact Us for Marathon Alternator Parts
For pricing, availability, and technical support on Marathon alternator parts:
- 📱 WhatsApp: +86 15905360672
- 📧 Email: huaquan@huaquanpower.com
- 🌐 Website: huaquanpower.net