LIFE FIT Alpha Series Seated Leg Curl (LF-1919)
Highlights
- Precision Hinge Arc Aligned with Natural Knee Flexion.
- 100kg Selectorized Dual-Rod Weight Stack System.
- 136kg Reinforced CR Steel Commercial Frame.
- Fully Adjustable Pads with ISO 20957 Certification.
The LF-1919 Seated Leg Curl provides consistent knee-flexion loading with stable user positioning. The seated setup maintains hip alignment and prevents unnecessary compensation, ensuring consistent activation across the hamstring group. A 136kg machine mass, reinforced welded base, dual-rod stack system, and selectorized 100kg weight stack support continuous use in commercial environments.
Biomechanics & Motion Path
Isolated Hinge Movement
The mechanism follows a precise hinge arc aligned with natural knee flexion. This ensures consistent torque application throughout the extended arc curl motion and maintains targeted hamstring engagement without excessive hip shift.
User Positioning Stability
The machine integrates multiple adjustment controls:
Adjustable thigh pad (pop-pin system)
Adjustable back pad with angle control
Adjustable lower-leg roller for starting position
These elements maintain thigh fixation, proper pivot alignment, and user stability essential for accurate knee-flexion mechanics.
Construction & Engineering
Frame Architecture
The LF-1919 uses a multi-profile CR steel structure manufactured with precision welds:
Flat Oval Tube: 100u00d750mm, 2.5mm
Flat Oval Tube: 120u00d750mm, 2.5mm
Round Tubes: u00d860mm and u00d850mm, 2.5mm
This configuration improves torsional resistance, reduces flex under load, and supports long-term structural integrity in high-volume installations.
Selectorized Weight System
The 100kg stack operates on chrome-polished dual guide rods, providing controlled travel and reducing vibration under repeated use.
Pulley & Cable Assembly
Reinforced nylon pulleys with sealed bearings
6mm internally lubricated high-tensile cable
These components ensure low-friction operation and reduce maintenance frequency compared to standard assemblies.
Base & Structural Stability
The welded base frame with rubberized foot pads provides rigid ground contact and minimizes lateral displacement during operation.
Upholstery & Ergonomics
High-density foam upholstery with contoured shaping supports the user through the full ROM. The thigh pad, back pad, and roller interface maintain consistent contact pressure and reduce unwanted movement.
Side handles allow users to stabilize their upper body during higher-load sets.
Safety & Certification
ISO 20957 Certified
The LF-1919 conforms to ISO 20957 standards for stationary training equipment, covering structural stability, safety mechanisms, and operating reliability.
Protective Shroud & Mechanical Safety
The perforated steel shroud shields the weight stack, reducing exposure to moving parts and increasing safety.
Service & Warranty
Imported and serviced by Ananta Fitness Equipment Pvt. Ltd.
5-Year Structural Warranty
1-Year Warranty on Cables, Pulleys & Stack
1-Year Free Service including 4 scheduled technician visits
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