CL201-1E Black Powder Coated Zinc Alloy 120° Wide Opening Concealed Embedded Industrial Hinge

CL201-1E is a wide-angle concealed embedded hinge manufactured from die-cast zinc alloy with matte black powder coating finish, equipped with steel pivot pin and mounting accessories for enhanced durability. Its core feature is the 120-degree maximum opening angle, wider than the standard 90° version, providing more internal access space for equipment maintenance. Adopting fully hidden embedded installation structure and 3 M5 external threaded studs for fast through-panel mounting, it is widely used in electrical control cabinets, distribution boxes, server enclosures, instrument housings and all industrial equipment requiring clean seamless appearance and wide opening access.

Complete Technical Specifications

• Model Number: CL201-1E
• Main Body Material: Die-cast Zinc Alloy
• Pivot Pin & Accessories: Steel
• Surface Finish: Black Powder Coating (Matte black powder coat)
• Maximum Opening Angle: 120° wide opening
• Overall Height: 75mm
• Overall Width: 35mm
• Mounting Configuration: 3 × M5 external threaded studs + 1 × Φ7 positioning hole
• Embedded Depth: 13.5mm
• Structure Type: Fully concealed embedded hinge with 120° angle limit

1. Fully Concealed Hidden Installation Advantage

The core feature of CL201-1E is its completely embedded structure. After installation, no hinge components are visible from the outside of the cabinet, creating a seamless, clean and premium appearance. This hidden design not only improves overall equipment aesthetics, but also enhances anti-tampering security by eliminating external prying points, and reduces dust and moisture accumulation on exposed hardware surfaces. The matte black powder coating perfectly matches most industrial cabinet color schemes for a unified professional look.

2. 120° Wide Opening Angle Design

Compared with standard 90° concealed hinges, CL201-1E features a wider 120° maximum opening angle, providing more unobstructed access to cabinet interior for wiring, component replacement, equipment debugging and routine maintenance. The built-in mechanical stop mechanism strictly restricts maximum opening at 120°, preventing over-swing that pulls internal wires, damages electrical components or scratches cabinet body.

3. Zinc Alloy + Steel Composite Construction

Die-cast zinc alloy main body delivers excellent structural strength, dimensional accuracy and impact resistance at cost-effective price point. The pivot pin and mounting accessories are made of steel for enhanced wear resistance and load capacity, ensuring smooth rotation and long service life under frequent opening and closing cycles.

4. Black Powder Coating Durable Finish

Electrostatic powder coating forms a tough, uniform matte black protective layer on zinc alloy surface, with superior adhesion, scratch resistance, corrosion resistance and weather durability compared with ordinary painting. The matte black finish resists fingerprints and minor abrasions, maintains professional appearance for long-term industrial use.

5. M5 Stud Quick Through-Panel Mounting

Three M5 external threaded studs allow fast installation by tightening nuts from the back side of the cabinet panel, no need for tapping threads on thin metal plates. The Φ7 auxiliary positioning hole ensures precise alignment during assembly, greatly improving production line installation efficiency.

Core Selling Points

1. 120° Wide Opening Access Wider than standard 90° hinges, more internal operation space for maintenance and debugging.
2. Fully Concealed Seamless Appearance No exposed hardware on cabinet exterior, premium clean look, enhanced anti-tampering security.
3. Black Powder Coated Zinc Alloy Body Matte black finish, scratch & corrosion resistant, matches industrial cabinet color schemes.
4. Steel Reinforced Pivot Pin Enhanced wear resistance and load capacity, smooth durable rotation.
5. M5 Stud Quick Mounting Fast through-panel installation with back nuts, high assembly efficiency, no tapping required.

Typical Application Scenarios

1. Low-voltage electrical distribution cabinets, PLC control boxes, inverter automation enclosures
2. Server racks, network communication cabinets, data center equipment housings
3. Industrial automation equipment control panels, machine tool operation boxes
4. Laboratory test instruments, medical device enclosures, clean room equipment
5. Indoor industrial cabinets, workshop control boxes, electrical equipment requiring wide opening access

Installation & Selection Guidelines

1. Angle Selection: Choose CL201-1E 120° version for cabinets requiring wide opening maintenance access; select CL201-1 90° version for standard electrical boxes with limited space.
2. Groove Preparation: Reserve matching embedded groove on cabinet door and frame according to hinge outline dimensions for flush installation.
3. Stud Matching: Drill 3 through holes for M5 studs and 1 Φ7 positioning hole on the cabinet panel, fasten with lock nuts from the back side for anti-loosening.
4. Load Suggestion: For wide or heavy door panels, install two CL201-1E hinges symmetrically for balanced load bearing.
5. Environment Note: Zinc alloy powder coated version is suitable for indoor and dry semi-outdoor environments; select CL201-1B SUS304 stainless steel version for outdoor, high humidity and corrosive sites.

Product Summary

CL201-1E black powder coated zinc alloy 120° concealed hinge is the wide-angle upgrade variant in the CL201 hidden hinge product line. Combining fully embedded seamless design, 120° wide opening access, durable black powder coating, steel reinforced pin and M5 stud quick mounting, it provides a cost-effective, aesthetically pleasing and functionally optimized hinging solution for industrial electrical cabinets requiring both clean appearance and wide maintenance access.

CL201-1E black powder coated zinc alloy 120 degree concealed cabinet hinge steel pin industrial hinge