Timing Belt Advantages & Disadvantages

Timing Belt - Advantages

• Precision registration and timing with no loss of high torque carrying capability
• Minimal vibration and chordal effect
• Positive slip proof engagement
• Wide speed range, especially important when the entire speed range is developed from a single source
• Virtually no elongation (stretching) due to wear
• High mechanical efficiency, as much as 98% when properly maintained. By contrast, chain drives are in the 91-98% efficiency range, while V-Belts average in the 93-98% range.
• Power transmission efficiency is not lost with use
• Clean operation, no need for lubrication
• Reduced noise
• Long, dependable trouble-free service
• Excellent abrasion resistance
• Rust resistant
• Resists chemicals and contaminants
• Increased drive design options
• Weight savings
• Safety issues
• Economical operations:
  • No need for expensive drive enclosures
  • No need for lubrication systems
  • No need for tensioning devices
  • No adjustment needed due to stretch or wear
  • No cost for lubricant or disposal fees
  • No worn sprocket replacement
  • No ongoing maintenance costs for roller chain
  • Energy savings
  • Reduced costs associated with "downtime" on top of lost productivity

Timing Belt - Disadvantages

Our own experience has shown that the timing belt is not perfect in every situation when comparing it against a chain drive. Being able to recognize timing belt limitations helps us to educate our customers in making the right decisions on their particular applications needs.

• Availability of numerous chain sizes allows for the use of smaller pitch diameters and/or number of teeth while achieving the desired ratio
• Higher speeds and power capacities
• Detachable chain links make installation easier in some instances
• Need for accurate initial alignment of drive components
• No slippage
• Higher drive ratios at shorter center distances
• Lower bearing loads
• Less affected by temperature or humidity
• Less affected by oil and grease