CL253-5 150×32mm Steel White Zinc Plated 180° Long Continuous Piano Hinge

Full Technical Specifications

Model Number: CL253-5
Overall Dimensions: 150mm length × 32mm total width (10mm per leaf + barrel) × 1.5mm leaf thickness
Maximum Opening Angle: 180°
Material: Solid steel (hinge body and pivot pin)
Surface Finish: White zinc plating (rust-proof, wear-resistant, clean industrial appearance)
Pivot Pin Diameter: Φ3.5mm
Mounting Holes: 6 pieces Φ6 through holes (3 per leaf), 60mm spacing between hole groups
Side Profile: 1.5mm leaf thickness
Core Features: Long continuous piano hinge design, distributed load support, white zinc plated steel, pre-drilled mounting holes, 180° full opening

Core Product Features & Advantages

1 Long Continuous Piano Hinge Design for Distributed Load Support

The continuous 150mm length distributes the door load evenly along the entire hinge, eliminating concentrated stress points and providing exceptional support and stability for long, wide or heavy cabinet doors. This design prevents door sagging and deformation over long-term use, ensuring consistent smooth operation and proper door alignment throughout the service life.

2 Solid Steel Construction with White Zinc Plating

The entire hinge, including both the body and pivot pin, is fabricated from robust solid steel for excellent structural rigidity and load-bearing capacity. The uniform white zinc plating forms a protective layer that effectively resists oxidation, rust and surface abrasion, providing reliable performance in standard indoor industrial environments while maintaining a clean and professional appearance.

3 Pre-Drilled 6×Φ6 Mounting Holes for Quick Installation

The 6 pre-drilled Φ6 mounting holes (3 per leaf, 60mm spacing) allow for quick and straightforward installation with M6 screws, eliminating the need for on-site drilling and ensuring consistent hole alignment. The evenly spaced holes provide secure fixation along the full hinge length, resisting loosening from vibration and mechanical impact.

4 180° Full Flat Opening Angle

The 180-degree maximum opening angle enables the cabinet door to lay completely flat, eliminating operational blind zones and providing full unobstructed access for internal wiring, component replacement, equipment inspection and routine maintenance work.

5 Φ3.5 Precision Pivot Pin for Smooth Continuous Rotation

The Φ3.5 precision-machined pivot pin runs continuously along the full hinge length, ensuring tight clearance, low-friction rotation and consistent smooth operation across the entire door span. The continuous pin design eliminates the wobble and misalignment common with multi-point discrete hinges on long doors.

6 Slim 1.5mm Profile for Standard Cabinet Configurations

With a slim 1.5mm leaf thickness and 32mm overall width, this hinge fits neatly within standard cabinet door-frame configurations. The compact profile minimizes the gap between door and frame while providing sufficient structural strength for medium to heavy-duty applications.

Application Fields

Electrical control cabinets, low-voltage distribution boxes, frequency converter enclosures and PLC equipment housings with long doors
CNC machine tool safety guards, automation equipment protective doors and industrial machinery access panels
Communication equipment cabinets, server racks and signal transfer enclosures requiring full-length door support
Sheet metal tool cabinets, industrial console doors, workbench cabinets and storage enclosures
Test bench cabinets, laboratory equipment enclosures and environmental monitoring control boxes
Aluminum profile industrial frames, mechanical equipment maintenance hatches and large test fixtures
Furniture manufacturing, display cases, kiosk enclosures and point-of-sale equipment
High-volume electrical cabinet manufacturing projects requiring cost-effective reliable continuous hinge solutions
Applications where door sagging and load distribution are critical concerns

Installation & Maintenance Guidelines

Step-by-Step Installation Procedures

Determine the installation position along the cabinet door edge according to the dimension drawing
Mark and drill 3×Φ6 through holes at 60mm spacing on both the cabinet frame and door panel (matching the pre-drilled hinge holes)
Align the hinge halves against the mounting surfaces, ensuring the full 150mm length is properly positioned along the door edge
Fasten with M6 screws through all 6 pre-drilled holes (3 per leaf)
Test the 180° opening movement for smooth continuous rotation along the full hinge length
Verify that the door opens and closes evenly without binding or sagging at any point along the hinge
Adjust the hinge position slightly if needed to achieve proper door alignment and consistent gap spacing

Installation Quantity Recommendation

For standard cabinet doors: Install 1 continuous piano hinge along the full door edge
For extra-long or very heavy doors (over 1500mm height): Install 2 hinges end-to-end or combine with additional discrete hinges for enhanced support

Maintenance Instructions

Suitable for indoor dry environments; not recommended for long-term outdoor exposure, high-humidity areas, coastal salt spray or severe chemical vapor conditions
Wipe the white zinc plated surface periodically with a soft dry cloth to remove dust, grease and moisture
Apply a small amount of dry lubricant along the Φ3.5 continuous pivot pin every six months to maintain smooth and quiet rotation along the full length
Check all 6 mounting screw tightness quarterly to prevent loosening from vibration
Inspect the white zinc plating annually for chips or scratches; touch up with zinc-rich paint if necessary to maintain rust protection
Inspect the continuous pin and barrel assembly annually for any signs of wear, bending or binding along the length

Product Summary

CL253-5 is a 150×32mm long continuous piano hinge manufactured from solid steel with white zinc plating on both the body and pivot pin. Its distributed load support design, robust steel construction, pre-drilled 6×Φ6 mounting holes, Φ3.5 continuous precision pivot pin, slim 1.5mm profile and 180° full opening angle make it a cost-effective and reliable hardware solution for electrical cabinets, machinery enclosures, industrial console doors, communication equipment and various applications requiring full-length door support, smooth continuous operation and resistance to door sagging.

CL253-5 steel white zinc plated long continuous piano hinge 180 degree 6-Φ6 mounting holes 150x32mm Φ3.5 pin industrial cabinet equipment hinge