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 Polyflex® JB® 
Belts 
 Unique 
60° angle polyurethane construction transmits greater loads higher speeds in 
less space than conventional V-belts. 
Markets/Applications A partial 
listing of applications include machine tools, computer peripherals, medical 
equipment, library equipment, small appliances, blower drives and woodworking 
machines. 
Features/Advantages 
High Modulus 
Polyurethane compound resists fatigue, wear, ozone, and most environmental 
conditions.  Precise casting method eliminates layers and overlaps for smooth 
running and low vibration.  Ribbed backing provides greater lateral stability 
and relieves bending stress.  Working temperature ranges: -65°F to +180°F 
(-54°C to + 85°C)
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