Seated Chest Press

Manufacturer load specs

Mechanical model Needs measurements

F_handle(θ) = W · R(θ) · η^n with R(θ) = Δs_stack / Δs_handle measured at start / mid / end

1 input(s) sourced · 2 to measure on site

To measure: R(θ) (Overall ratio (pulleys × cam × lever) at start/mid/end) · n, η (Pulleys and their efficiency)

gym80 publishes no ratios, cam profiles or dimension drawings (product sheet and 2025 instructions for use checked); the spare-parts brochure lists fixed pulley diameters, but fixed pulley diameters do not change the ratio.

Derivation & sources Measurement protocol (French)

Measured / estimated resistance points

Guides about this machine

Chest press weight stacks by brand: Technogym vs Life Fitness vs Hammer StrengthHow to convert machine weight between gyms and brandsPlate-loaded vs selectorized machines: why the numbers differ

Same movement at other brands

One machine per brand for this movement. Open one to see its own specs and sources.

Arsenal Strength Reloaded Iso Flat PressAtlantis Strength Seated converging chest pressCybex Eagle NX Chest PressExigo Chest PressHammer Strength Select Chest PressHoist Fitness Chest PressLife Fitness Axiom Series Chest PressMatrix Fitness Aura Chest PressNautilus (commercial) Impact Chest PressPanatta Vertical Chest PressPrecor Chest PressPrime Fitness Chest PressTechnogym Artis Chest PressWatson Gym Equipment Single Stack Chest Press

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