The Overhead Door Closer NSK-680 STD with Scissor Arm is a durable and high-performance solution designed for medium-duty door applications. Built with a precision rack and pinion mechanism, it ensures smooth, reliable operation and easy opening action for everyday use in residential and commercial environments.
 
This model features adjustable closing and latching speeds with two independent control ranges, allowing precise customization based on door size and usage. Its non-handed design makes it suitable for both left- and right-oriented doors, providing flexibility in installation. Engineered to meet EN 1154 standards and tested for 500,000 cycles, it guarantees long-term reliability and consistent performance.
 
Constructed from high-quality aluminum alloy with a built-in anti-external force protection system, this door closer enhances durability while protecting the door, frame, and hardware. The integrated back check function adds an extra layer of safety by controlling the opening speed and preventing damage caused by sudden impact.
 
Finished in a sleek silver coating, the NSK-680 STD complements modern architectural hardware while delivering dependable performance across a wide range of applications.
 
Key Features:
 
Overhead door closer with standard scissor arm
Reliable rack and pinion mechanism for smooth operation
Adjustable closing and latching speeds (dual control ranges)
Easy opening action for user convenience
Non-handed design for left and right door installations
Back check function to prevent sudden door impact
Durable aluminum alloy body construction
EN 1154 certified performance
Tested for 500,000 cycles for long-lasting reliability
Supports doors up to 80 kg
Suitable for door widths up to 1100 mm
Door opening angle up to 105°
Modern silver finish
 
Applications
 
Ideal for residential homes, offices, retail spaces, and commercial buildings where controlled door closing, durability, and safety are essential. Suitable for installation on door leaf or transom, offering flexible mounting options.