GATES POLYFLEX® JB™

GATES POLYFLEX® JBTM

POLYURETHANE MULTIPLE V-BELT

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Polyflex® JBTM 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® JBTM 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 undercord 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.
Sections and nominal dimensions
Section Standard numbers of ribs Width
(mm)
Height
(mm)
Pitch/
(mm)
Length range
(effective length - mm)
2 3 4 5
3M-JB X X     3 2.28 3.35 175 – 750
5M-JB X X X X 5 3.30 5.30 280 – 1500
7M-JB X X X X 7 5.33 8.50 490 – 2293
11M-JB X X     11 7.06 13.20 692 - 2282
Ordering Code
5M280/3
5M - Section
280 - Effective length (mm)
3 - Number of ribs (joined belt)
NOTE: For correct design and tensioning of the belt please use Gates DesignFlexTM ProTM Drive design software, available on www.Gates.com/Europe.
Identification Durable white marking indicating the belt type and white marking indicating the belt dimensions.