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Cable Sheaves
All sheaves are cast from 356-T6 aluminum, machined for correct balance and fitted with heavy duty, self-lubricating SAE863 iron-bronze bushings. These have more than twice the load bearing capacity of traditional bronze bushings.
356-T6 aluminum is a heat treated material giving more than 33,000 lbs. of tensile strength making it one of the strongest types of aluminum castings available. These sheaves are designed to take the full load at either entry or exit points of the pull. Also available are "Flat Bottom" Sheaves. These sheaves are designed to allow parallel seating of 3 cables on the sheave. This prevents bunching, which often causes one or more of the cables to ride up the side of the sheave, possibly damaging the cable jackets. This sheave style is currently only available in the 6" wide x 20" diameter size.
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