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LCN 4510-7361 Smoothee® Series Surface-Mounted Hydraulic Door Closer for Commercial Applications
The LCN 4510-7361 Smoothee Series hydraulic door closer is purpose-built for demanding commercial and institutional high-traffic interior environments. Engineered with a robust cast iron body and forged steel arms, it delivers precise door control, meeting ANSI/BHMA A156.4 Grade 1 standards with an impressive 10 million cycle endurance.
Quick Answer
The LCN 4510-7361 excels in high-traffic commercial settings, offering unparalleled durability and precise hydraulic door control with its 10 million cycle rating and adjustable power.
✓ANSI/BHMA A156.4 Grade 1 Certified for superior performance and durability in commercial applications.
✓Tested to 10,000,000 cycles, ensuring exceptional longevity in heavy-use interior environments.
✓Adjustable power size 1-6 for adaptable closing force across various door widths up to 1524mm.
✓Incorporates adjustable back-check, closing, and latching speeds for precise and customizable door control.
✓Robust cast iron body and forged steel extra-duty arm construction with security cover for enhanced vandal resistance and extended service life.
The LCN 4510-7361 Smoothee Series door closer is an exceptionally durable and precisely controllable hydraulic solution, ideally suited for high-traffic commercial and institutional interior doors where ANSI/BHMA A156.4 Grade 1 performance and longevity are paramount, albeit without fire-rating capabilities.
✓ Who Should Buy
- •Facilities managers of schools, hospitals, offices, and other high-traffic commercial buildings.
- •Architects and specifiers requiring heavy-duty, adjustable, and reliable door control for interior openings.
- •Building owners seeking long-term durability and reduced maintenance for frequently used doors.
- •Accessibility consultants ensuring ADA or BAA compliance with adjustable opening forces.
✕ Who Should Avoid
- •Applications requiring fire-rated door closers for fire barrier openings.
- •Exterior door installations, as this unit is specified for interior use.
- •Low-traffic residential or light commercial applications where a less robust and less costly closer would suffice.
Product Overview
The LCN 4510-7361 Smoothee Series hydraulic door closer is a heavy-duty, surface-mounted solution meticulously engineered for the demanding conditions of commercial and institutional interior doors. Manufactured in the USA, this closer is designed to handle high-traffic environments, providing robust and reliable door control. Its construction features a durable cast iron body and a forged steel extra-duty arm, both designed for longevity and enhanced security with an accompanying security cover. The body and arm finishes are available in powder coat or optional plated finishes for aesthetic and protective versatility. The 4510-7361 offers versatile functionality with its field-adjustable power size, ranging from 1 to 6, accommodating door widths up to approximately 1524mm. Precision hydraulic valves allow for independent adjustment of both closing and latching speeds, ensuring controlled door movement and secure closure without slamming. An essential integrated back-check feature provides hydraulic resistance against abusive door openings, protecting the door and frame from damage. This closer is ANSI/BHMA A156.4 Grade 1 certified, signifying its adherence to the highest industry standards for performance and durability, underscored by an impressive 10,000,000-cycle test rating. It is also UL Listed and designed to meet ADA or BAA requirements where applicable. While specifically designed for interior wood or metal doors and not fire-rated, its superior build quality and adjustable controls make it an optimal choice for applications requiring consistent, heavy-duty door operation and controlled access.
| Brand | lcn |
| Model Name | N/A |
| Category | Door Closer |
| Closer Type | Hydraulic |
| Series | 4510 Smoothee |
| Model Year | 2018-2026 |
| Country Of Origin | N/A |
| Intended Use | Commercial / Institutional High Traffic |
| Suitable For | Interior Doors |
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Engineering Analysis
The LCN 4510-7361 Smoothee Series door closer represents a pinnacle of hydraulic engineering for demanding door control applications. Its core mechanism features a precision-machined, cast iron cylinder housing a high-performance hydraulic fluid system. This sealed system, coupled with robust adjustable valves, allows for granular control over three critical phases of door operation: closing speed, latching speed, and back-check intensity. The adjustable closing speed valve permits precise regulation of the door's travel from its maximum opening angle of 140 degrees down to approximately 15 degrees from the frame. This prevents uncontrolled swinging and ensures a smooth, quiet closure. The independent latching speed valve then dictates the final 10-15 degrees of door travel, providing sufficient force to overcome latch resistance without slamming, crucial for secure closure in high-traffic environments. Crucially, the integrated adjustable back-check function engages when the door is aggressively opened, creating hydraulic resistance that protects the door, frame, and hardware from potential damage due to forceful impacts. This feature significantly extends the lifespan of the entire door assembly. Compliance with ANSI/BHMA A156.4 Grade 1 is a testament to the 4510-7361's engineered durability and operational excellence. This rigorous standard mandates superior performance characteristics, including consistent closing force, controlled operation, and resistance to wear. The closer's exceptional 10,000,000-cycle test rating further validates its long-term reliability and low maintenance requirements in severe service conditions. While the LCN 4510-7361 is not designated as fire-rated, its robust construction, featuring a heavy-duty cast iron body and forged steel extra-duty arm with a security cover, ensures continuous, precise door control essential for maintaining security and operational efficiency in non-fire barrier interior openings. The handed design and adjustable power size range from 1 to 6 allow for optimal customization to varying door widths (up to ~1524mm) and operational requirements, ensuring ADA or BAA compliance where applicable by managing opening forces effectively.
Technical Support & FAQs
Engineering Analysis
The LCN 4510-7361 Smoothee Series door closer represents a pinnacle of hydraulic engineering for demanding door control applications. Its core mechanism features a precision-machined, cast iron cylinder housing a high-performance hydraulic fluid system. This sealed system, coupled with robust adjustable valves, allows for granular control over three critical phases of door operation: closing speed, latching speed, and back-check intensity. The adjustable closing speed valve permits precise regulation of the door's travel from its maximum opening angle of 140 degrees down to approximately 15 degrees from the frame. This prevents uncontrolled swinging and ensures a smooth, quiet closure. The independent latching speed valve then dictates the final 10-15 degrees of door travel, providing sufficient force to overcome latch resistance without slamming, crucial for secure closure in high-traffic environments. Crucially, the integrated adjustable back-check function engages when the door is aggressively opened, creating hydraulic resistance that protects the door, frame, and hardware from potential damage due to forceful impacts. This feature significantly extends the lifespan of the entire door assembly. Compliance with ANSI/BHMA A156.4 Grade 1 is a testament to the 4510-7361's engineered durability and operational excellence. This rigorous standard mandates superior performance characteristics, including consistent closing force, controlled operation, and resistance to wear. The closer's exceptional 10,000,000-cycle test rating further validates its long-term reliability and low maintenance requirements in severe service conditions. While the LCN 4510-7361 is not designated as fire-rated, its robust construction, featuring a heavy-duty cast iron body and forged steel extra-duty arm with a security cover, ensures continuous, precise door control essential for maintaining security and operational efficiency in non-fire barrier interior openings. The handed design and adjustable power size range from 1 to 6 allow for optimal customization to varying door widths (up to ~1524mm) and operational requirements, ensuring ADA or BAA compliance where applicable by managing opening forces effectively.