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Sherman & Reilly urethane-lined aluminum sheaves are made identically to
polished-groove sheaves except that a premium-grade polyurethane lining is
cast-in-place on the sheaves’ conductor-contact surface. The properties of the
urethane and casting it in place on the bare sheave together assure a high-precision
profile of the lined sheave. The urethane’s formulation assures resiliency to cushion
conductors, as well as assures hardness, high load-bearing capacity, impact
resistance, abrasion resistance, resistance to compression-set, and resistance to oil,
ozone, and other environmentals – all of which contribute to long useful life, even
under harsh field conditions. A-scale durometer hardness of the lining is 90-92.
Blocks with urethane-lined sheaves are especially appropriate for stringing
conductor, static wire, and fiber optic cables. However, they typically cost ~ 25%
more than polished groove.
Specifications:
- Height Strength, Low Weight
- Positive Locking handle ( a secure spring loaded latch and large-ID Pull-Loop) on the side gate assembly for easy conductor clip-in and for easy conductor clip-in and for hot-stick operations
- Maximum Working Load; 2500 lbs.
- Efficiency: 98%
- Maximum Conductor OD: 1-3/4"
- Sheave OD:7"
- Sheave Groove Radius: 1"
- Sheave Throat Width: 3-3/16"
- Sheave Rim Width; 3"
- Overall Width: 7"
- Overall Height: 14-11/16" with bracket
- Overall Height: 15-13/16" without bracket
- Frame Material; A356-T6 Aluminum (Virgin)
- Sheave Material: Ductile Iron
- Sheave Lining: Urethane
- Hanging Hardware: Socket Connector
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