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| Metric Timing Belt - Advantages / Disadvantages |
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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% with properly maintained CTD, HTD or STD profile systems. 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
- 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
Disadvantages:
Note: Our own experience has shown, that the belt drive is not perfect in every situation when comparing it against a chain drive. Being able to recognize belt drives short comings 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
- No slippage
- Higher drive ratios at shorter center distances
- Lower bearing loads
- Less affected by temperature or humidity
- Less affected by oil and grease
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