View All Poly Chain® GT™2 Sprockets

8MX-50S-21 2012

Product # 77182050

Strong, durable sprockets designed for use with your Poly Chain® GT™2, Poly Chain® GT™ or Poly Chain® GT™ Carbon™ belts.

  • Full split in bushing allows for easy installation and removal
  • Poly Chain® GT™2 Sprockets keep overhung load below manufacturers’ recommendation
  • Precise sprocket design produces positive, press fit to shaft
  • Precision manufactured and static balanced
  • Re-work services have turnaround time
  • Smaller, narrower sprockets save shaft space, keep the load closer to bearing and extend life of reducer
  • Sprockets are precision manufactured and static balanced
  • Warning: Do NOT use these sprockets with rim speeds in excess of 6,500 fpm
  • Product Details
    Part # 8MX-50S-21  /  8MX50S21
    Product # 77182050
    Description 8MX-50S-21 2012
    UPC 072053271034
    Pitch 8 mm
    Number of Grooves 50
    Width 21 mm
    Pitch Diameter 5.013 in
    Rebore false
    Bore Bushing 2012
    Bore Range Min 0.5 in
    Bore Range Max 2.125 in
    Material Ductile Iron
    Profile GT
  • Application
    Markets/Applications Use with any Poly Chain® belts.
  • Notes
    Belt Notes Abbreviations used for sprocket materials: GI=Gray Iron, DI=Ductile Iron, SiS=Sintered Steel, ST=Steel, CI=Cast Iron. Details shown which do not affect drive function or overall weight may be changed without notification. On a sprocket, pitch is the distance between groove centers and is measured on the pitch circle of the sprocket. The pitch circle of the sprocket coincides with the pitch line of the belt mating with it. The pitch diameter of the sprocket is always greater than its outside diameter. Sprocket part numbers are comprised of pitch, number of grooves and width. For example; part number 8MX-48S-12 denotes 8mm pitch, 48 grooves, "S" for sprocket and 12mm width. Sprockets with 90 or more groves do not have flanges.
    WARNING: Do NOT use these sprockets with rim speeds in excess of 6,500 fpm.
  • Packaging details
    Customer Pack 1
    Weight (lbs.) 4.2

The Industry's Best.

With patented, carbon tensile cord design for high-torque, low-speed drives, Gates® engineers were the first in the world to incorporate a high fatigue-resisting carbon fiber tensile cord into the belt, which is made of a new polyurethane compound. Consequently, Poly Chain® GT™ Carbon™ quickly became the most powerful line of synchronous belts on the market, providing a maintenance-free, energy saving, and environmentally friendly operation, offering an excellent alternative to roller chain and gear drives.

Metals Made to Your Application Specifications.

With Gates® MachineWorks services, our product application experts work with you or your facility manager to customize drive components in a variety of bores, styles, materials, and finishes for your non-standard and prototype power transmission and belt drive applications.