Lightweight strength for reliable conductor stringing. The Sherman + Reilly XS-100B Universal Stringing Block is designed for maximum durability and efficiency in utility and contractor applications. Rugged yet lightweight, it’s built to handle tough field conditions while minimizing pulling tensions and reducing equipment strain. With low-friction sealed ball bearings, the XS-100B delivers consistently high efficiency during stringing operations, maximizing distances while protecting your equipment.
The frame is crafted from “virgin” A356-T6 aluminum — a tightly controlled alloy that ensures superior strength, uniform density, and long-term reliability. Unlike recycled blends, this pure alloy avoids impurities that can cause brittleness or premature failure. Each frame is precision-cast for even density and structural integrity, resulting in a block that is both strong and dependable in the field.
The 7" × 3" polished groove aluminum sheave is heat treated for strength and longevity, with sealed anti-friction ball bearings lubricated for life. This design maintains a constant 98% efficiency under normal conditions, significantly reducing pulling forces and tensioning loads. The XS-100B combines precision engineering with rugged construction — backed by Sherman + Reilly’s Forever Warranty.
Key Features:
- Lightweight A356-T6 aluminum alloy frame for strength and reliability
- Low-friction sealed ball bearings for 98% efficiency during stringing
- 7" × 3" polished groove sheave, heat treated for extended life
- Positive locking handle with spring-loaded latch and large pull-loop for secure clip-in and hot-stick use
- 2,500 lb maximum working load
- Forever Warranty for long-term peace of mind
Specifications:
- Frame material: Virgin A356-T6 aluminum alloy
- Sheave size: 7" × 3" aluminum alloy, heat treated
- Bearings: Sealed anti-friction ball bearings, pre-lubricated
- Efficiency: Constant 98% during pulling/tensioning operations
- Working load limit: 2,500 lbs
- Side-gate assembly: Positive locking handle, spring-loaded latch, large pull-loop
- Warranty: Forever Warranty
Compatible Fittings (sold separately):
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