LIFE FIT Alpha Series Seated Leg Curl (LF-1919)

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