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4 inch x 5/8 inch (101 x 76mm) double pulley with an aluminum sheave and stainless steel side plates.

Optional NFPA stamp is available on both bearing and bushing models.

CMI 4in. x 5/8in. Double Pulley - Aluminum Sheave, Stainless Sideplates

CMI 4in. x 5/8in. Double Pulley - Aluminum Sheave, Stainless Sideplates

:: Specifications

  • Bushings:
    • MBS (lbs): 25000
    • Rope Cap: 5/8
    • Sideplates: Stainless Steel
    • Sheave: 4in. Aluminum
    • #sheaves: 2
    • Mechanics: Bushing
    • Axle: Stainless Steel
    • Size (in): 9x4.75
    • Weight (lbs): 3.95
    • Efficiency: 198.0%
  • Bearings:
    • MBS (lbs): 25000
    • Rope Cap: 5/8
    • Sideplates: Stainless Steel
    • Sheave: 4in. Aluminum
    • #sheaves: 2
    • Mechanics: Bearing
    • Axle: Stainless Steel
    • Size (in): 9x4.75
    • Weight (lbs): 4.00
    • Efficiency: 215.8%

:: Features

  • Bushing:
    • Spreads the load over a larger area of the axle, sliding the load around the pulley
    • Greater transfer and very little wear and longer life
    • Greater area in contact results in increased friction, decreasing efficiency
  • Bearing:
    • Decrease the amount of surface area in contact with the axle, which creats a more efficient transfer
    • By rolling the load around the axle, load on the transfer point is increased, which results in faster wear, shortening the life of the pulley

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