Polyflex™ JB™ is synonymous with high power density in small spaces. Developed by Gates and produced to patented manufacturing processes, these belts provide more load-carrying capacity at higher speeds to small multiple V-belt precision drives. This results in significant cost savings and improved design freedom. Polyflex™ JB™ belts are recommended for use on bench type milling machines, lathe drives, woodworking and metalworking machine spindle drives, computer peripheral equipment, small blowers, etc. They are available in 3M-JB, 5M-JB, 7M-JB and 11M-JB sections.

Construction

• JB = Joined Belt construction improves stability.
• Ribs relieve bending stress on small pulleys and provide lateral rigidity.
• The 60° angle provides more under cord support to the tensile section and distributes the load more evenly.
• Small cross-section meets special application needs such as high shaft speeds, small drive package size and smooth-running requirements.
• High modulus polyurethane compound with a high friction coefficient.
• The precise casting method eliminates overlaps and layers.
• Excellent adhesion of tensile cords and polyurethane compound leads to high fatigue resistance and long belt life.
• Extra toughness. The polyurethane compound resists fatigue, wear, and ozone.

Benefits

• Long belt life on small pulleys and compact drives.
• Greater shaft speeds, up to 30,000 rpm.
• High performance and smooth running for precision applications.
• Cost savings and design freedom.
• Avoids vibrations when subjected to shock loads.
• Available on demand in Matched sets. Contact Customer Service for details.
• Available on demand in MTQ (MTQ=Machine Tool Quality) execution (Except on 3M-JB). Contact Customer Service for details.
• Temperature range: -54°C up to +85°C.