The average lifespan of an electric motor depends on several factors including how it’s used, how often it’s maintained, and the environment in which it operates. In this post, we’ll break down the key lifespan indicators and show you how to maximise your motor's working life.

On average, well-maintained electric motors last:

• 10–15 years for industrial AC motors
• 5–10 years for smaller or lightly used DC motors
• 20+ years for motors in clean, stable environments with proper maintenance

However, these numbers are only true when motors are serviced regularly and not pushed beyond design limits.

1. Usage Patterns
   Frequent start/stop cycles wear down components faster.
   Operating at or near max load for long periods reduces motor longevity.
2. Environment
   Dust, moisture, vibration, and heat dramatically shorten lifespan if motors are not properly protected or sealed.
3. Maintenance Frequency
   Motors that receive routine inspections, lubrication, and electrical testing consistently outlive neglected ones.
4. Installation Quality
   Misaligned shafts, poor electrical connections, or imbalanced loads can cause premature failure.

• Unusual noises or excessive vibration
• Overheating or frequent trips
• Reduced performance or erratic operation
• Excessive wear on bearings or brushes
• Insulation resistance dropping below safe levels

If you notice any of these signs, it’s time to take action before a full breakdown occurs.

At Machine Technik, we help businesses across the UK maximise motor life with professional servicing and repairs.

Our electric motor services include:

• Predictive maintenance & testing
• On-site diagnostics
• Motor rewinds
• Gearbox overhauls
• Complete refurbishments

If your motor is showing signs of wear or you want to avoid breakdowns altogether our team is here to help.

Explore our Electric Motor Repair & Gearbox Services to learn more about how we can keep your motors running longer.