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Catalog provided courtesy of The Crosby Group, Inc.
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Page 213

McKissick sheaves come in a variety of sizes to suit your specific applications.  Check the tables for the size, bearing style and price that best fits your application.  For applications that require unique specifications Crosby can make minor modifications to many of the sheaves listed at a reasonable charge.  We can also custom design and manufacture sheaves to your exact requirements.  Contact Crosby Sales to order McKissick sheaves and include the stock number and quantity.  For special requirements or custom designed sheaves, furnish the following important information:

Sheave and Hook Configurator
Sheave and Hook Configurator
Sheave Inspection

  • Wireline Size
  • Shaft Diameter
  • Weight Requirements
  • Hub Diameter
  • Bore Finished
  • Nominal Outside Diameter
  • Hub Width
  • Rim Width
  • Nominal Tread Diameter
  • Other Special Requirements

 

ROLL FORGED SHEAVE FEATURES

  • Unique upset roll forging process provides a thicker groove section for extra strength.
  • Stepped Hubs are precisely centered and mechanically locked in place.
  • Wireline grooves on sheave diameters of 14" and larger are flamed hardened for extra wear resistance.
  • All sheaves have solid steel webs with holes for easy handling.
  • Sheave weights can be made heavier or lighter than shown to fit your specific application.
  • For more information ask for our special brochure describing the complete roll forging process.

 

McKissick® Roll Forged Sheave CONFIGURATOR

The McKissick® Roll Forged Sheave CONFIGURATOR system has been developed to simplify the selection and odering of McKissick® Roll Forged sheaves. Although McKissick® can custom manufacture any Roll-Forgedsheave to your exact requirements, we have developed the system to allow quick and easy selection of the proper standard McKissick® Roll Forged sheave required to meet your applications. Using standard sheaves will reduce the lead time in getting the sheave to you, thus saving you time and money.

For more information, see page 337, or contact your local authorized Crosby distributor.

SHEAVE BEARING APPLICATION INFORMATION

BRONZE BUSHING -

Slow line speed, moderate load and moderate use,
Maximum Bearing Pressure (BP):  4500 PSI
Maximum Velocity at Bearing (BV):  1200 FPM
Maximum Pressure Velocity Factor (PV): 55000

Formula for BP =

Line Pull x Angle Factor
(see page 293)


Shaft Size x Hub Width
(see example).


PLAIN BORE -
Very slow line speed, very infrequent use, low load.

ROLLER BEARING -
Faster line speeds, more frequent use, greater load.

 

Example:

Using a 14 in. sheave (917191) with a 4600 lb. line pull and a 80 degree angle between lines, determine maximum allowable line speed.

  BP = 4600 lbs. x 1.53 ÷ 1.50 x 1.62 = 2896 PSI
    (Line Pull) (Angle Factor) (Hub Width)
                                       (Shaft Size)

  BV = 55000 ÷ 2896 = 19FPM
            (PV Factor) (BP)

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