The NSK-680A STD Overhead Door Closer with Scissor Arm is a reliable and high-performance door control solution designed for smooth, controlled door operation in residential and commercial environments. Featuring a precision rack and pinion mechanism, it delivers effortless opening, consistent closing performance, and long-lasting durability for everyday use.
 
This overhead door closer is equipped with independently adjustable closing and latching speeds, allowing installers to fine-tune door movement according to specific requirements. Its non-handed design makes it suitable for both left- and right-oriented doors, while the standard scissor arm ensures secure and dependable operation. The closer can be mounted on the door leaf or transom, providing flexible installation options for a wide range of applications.
 
Manufactured from a high-quality aluminum alloy casting body, the NSK-680A STD is built for strength and longevity. The integrated anti-external force protection helps safeguard the door, frame, and closer from excessive impact. A built-in back check function slows the door after approximately 60° of opening, helping prevent damage caused by forceful opening.
 
Tested to EN 1154 standards and certified for 500,000 operating cycles, the NSK-680A STD delivers dependable performance in high-traffic residential and commercial environments.
 
Key Features
 
Precision rack and pinion mechanism for smooth operation
Standard scissor arm for reliable door control
Adjustable closing and latching speeds with independent controls
Easy opening action for user comfort
Non-handed design for left- and right-handed doors
Suitable for installation on the door leaf or transom
High-strength aluminum alloy body construction
Integrated back check function for enhanced door protection
EN 1154 tested for quality and reliability
Tested for 500,000 cycles for long service life
Supports doors up to 80 kg
Suitable for door widths up to 1100 mm
Premium silver finish for modern interiors