Back Extension SH-G6817

The SHUA SH-G6817 Back Extension is a selectorized strength machine designed explicitly for isolating and strengthening the lower back (lumbar) musculature via a guided extension motion. It belongs to SHUA’s 68-series of commercial strength equipment. Specifications & Construction: • Dimensions (L × W × H): 1,460 × 985 × 1,545 mm • Weight Stack / Resistance: 90 kg • Net Machine Weight: 211 kg • Gross Shipping Weight: 270 kg • Frame & Materials: Constructed from Q235A steel; primary frame tubing 150 × 50 × 2.0 mm, sub-frame 120 × 50 × 2.0 mm • Cable / Resistance System: Uses a PA-coated steel cable of about 5.6 mm diameter for smooth loading and durability • Target Muscles: Lower back muscles including sacrospinalis and quadratus lumborum Functionality & Use Cases: The machine allows users to perform back-extension movements under controlled conditions, minimizing spinal shear and emphasizing lumbar activation. It includes adjustable seat settings and pivot points to accommodate different user heights and alignment preferences. The guided path ensures consistency and safety compared to free-body back extensions. SH-G6817 is ideal for strength zones, rehab areas, or lower-back training circuits. Its resistance ceiling of 90 kg makes it viable for both moderate and advanced users, while the solid steel construction and commercial design ensure durability for heavy use.