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  • Boston Gear BF1811/8X11/8 Shaft Coupling, Spider Ring (3-Jaw), Coupling Size BF18, 2.250" Hub Diameter, 1.125" Driven Hub Bore, 1.125" Driver Hub Bore, 2.719" Max Outer Diameter, 8 horsepower Max HP, 300 pounds per inch Max Torque
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Boston Gear BF1811/8X11/8 Shaft Coupling, Spider Ring (3-Jaw), Coupling Size BF18, 2.250" Hub Diameter, 1.125" Driven Hub Bore, 1.125" Driver Hub Bore, 2.719" Max Outer Diameter, 8 horsepower Max HP, 300 pounds per inch Max Torque


List Price: $65.80
Price: $57.34 & FREE Shipping. Details
You Save: $8.46 (13%)
Only 1 left in stock (more on the way).
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Specifications for this item
Brand Name Boston Gear
Part Number BF1811/8X11/8
UPC 781711117620
EAN 0781711117620
Number of Items 1
UNSPSC Code 31163000

Flexible couplings are used to link two rotating shafts that are not aligne... Read full product description



Product Features

  • Two 3-jaw coupling halves and one coupling insert for connecting two shafts together
  • Spider ring urethane insert absorbs shock and vibration
  • Powdered metal for resistance to wear and long service life
  • 1-1/8" x 1-1/8" bores for connecting shafts
  • Keyway and set screw locking for secure attachment

Product Details

  • Shipping Weight: 2.4 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to over 75 destinations outside of the U.S. Learn More
  • ASIN: B004NYAKT0
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product Description

Flexible couplings are used to link two rotating shafts that are not aligned in order to transmit the rotational power, known as torque, from one shaft to the other. Most flexible couplings consist of two hubs and a middle assembly; each hub attaches to a shaft while the middle assembly flexes between the hubs to accommodate the misalignment of the two shafts. Shaft misalignments are generally either parallel or angular and cause complications to transmitting rotational power from one shaft to another in the form of stresses, loads, vibrations, and other forces, which vary from one type of misalignment to another. Flexible couplings are used in a broad range of applications, such as in motor vehicles, conveyors, escalators, agricultural, forestry and mining equipment, aeronautics, robotics and space exploration, among others.

Boston Gear manufactures gears, gear drives, bearings, valves, shaft collars, couplings, and other power and fluid transmission components. The company, founded in 1877, is headquartered in Charlotte, NC, and meets International Organization for Standardization (ISO) standard 9001:2008 standard.


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