seated leg curl machine

Capacities vary widely. Many machines list loads in the low hundreds (about 210–450 lb), while some plate-loaded or home-commercial units advertise much higher capacity—examples up to around 700 lb.

Typical adjustments include multi-position seats and backrests plus adjustable thigh/leg arms and locks. Example ranges in listings go from small seat-height settings (about 13.7–15.3 in) up to multi-position systems offering many back pad, seat, thigh lock, and leg arm positions.

Primary functions are seated hamstring (leg) curls and leg extensions. Many units also support related lower-body movements—examples include kneeling leg curls, some hip-thrust variations, core crunches on certain benches, and specialty benches for Nordic hamstring work.

Footprints range from compact benches to larger commercial units. Examples in listings show compact dimensions (about 13.7 in H × 18 in W × 45.9 in D) up to larger machines (for example 62 in H × 66 in W × 39 in D), with several mid-size options between those extremes.

Conversion methods vary by design: some use tool-free pull-and-plug or quick-clip mechanisms for fast switching, while others rely on pivoting arms and adjustment discs to change the movement path between extension and curl.