CL201-2 Nanometer Painted Zinc Alloy 90° Compact Concealed Embedded Industrial Hinge

CL201-2 is the compact size variant of CL201 series concealed embedded hinges, manufactured from die-cast zinc alloy with nanometer painting finish, equipped with steel pivot pin and mounting accessories for enhanced durability. It features built-in 90-degree fixed opening stop, fully hidden embedded installation structure, and 3 M4 external threaded studs for fast through-panel mounting. The more compact size and smaller M4 studs make it ideal for small electrical boxes, instrument enclosures, mini control panels and compact equipment requiring clean seamless appearance.

Complete Technical Specifications

• Model Number: CL201-2
• Main Body Material: Die-cast Zinc Alloy
• Pivot Pin & Accessories: Steel
• Surface Finish: Nanometer Painting (Smooth matte finish)
• Fixed Opening Angle: 90° mechanical stop
• Overall Height: 75mm
• Overall Width: 32mm
• Mounting Configuration: 3 × M4 external threaded studs + 1 × Φ5 positioning hole
• Embedded Depth: 13.5mm
• Structure Type: Compact fully concealed embedded hinge with 90° angle limit

1. Fully Concealed Hidden Installation Advantage

The core feature of CL201-2 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 nanometer painted finish delivers a smooth, uniform appearance that matches most industrial cabinet color schemes.

2. Compact Size for Small Cabinets

Compared with CL201-1 standard size (M5 studs, 35.2mm width), CL201-2 features a more compact profile with smaller M4 studs and 32mm width, specially designed for smaller door panels and limited installation space. It provides the same reliable concealed hinge function in a smaller footprint, perfect for instrument boxes, junction boxes, control panels and compact equipment enclosures where space is at a premium.

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. Nanometer Painting Durable Finish

Nanometer painting technology forms a uniform, smooth protective layer on zinc alloy surface, with good adhesion, scratch resistance and corrosion resistance for indoor industrial environments. The finish maintains consistent appearance and color stability for long-term use.

5. M4 Stud Quick Through-Panel Mounting

Three M4 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 Φ5 auxiliary positioning hole ensures precise alignment during assembly, greatly improving production line installation efficiency.

Core Selling Points

1. Compact Space-Saving Size Smaller profile with M4 studs, ideal for compact cabinets and limited installation space.
2. Fully Concealed Seamless Appearance No exposed hardware on cabinet exterior, premium clean look, enhanced anti-tampering security.
3. Nanometer Painted Zinc Alloy Body Smooth uniform finish, good scratch & corrosion resistance for indoor use.
4. Steel Reinforced Pivot Pin Enhanced wear resistance and load capacity, smooth durable rotation.
5. M4 Stud Quick Mounting Fast through-panel installation with back nuts, high assembly efficiency, no tapping required.

Typical Application Scenarios

1. Small electrical junction boxes, mini PLC control boxes, compact sensor enclosures
2. Instrument test housings, portable detection devices, desktop equipment panels
3. Small communication terminal boxes, indoor wall-mounted wiring boxes
4. Laboratory mini instrument covers, medical small device access panels
5. Compact automation module cabinets, small machine tool operation boxes

Installation & Selection Guidelines

1. Size Selection: Choose CL201-2 compact version for small cabinets with limited space; select CL201-1 standard size (M5 studs) for medium and large cabinets requiring higher load capacity.
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 M4 studs and 1 Φ5 positioning hole on the cabinet panel, fasten with lock nuts from the back side for anti-loosening.
4. Load Suggestion: For wider or slightly heavier door panels, install two CL201-2 hinges symmetrically for balanced load bearing.
5. Environment Note: Zinc alloy nanometer painted version is suitable for indoor dry environments; select CL201-1B SUS304 stainless steel version for outdoor, high humidity and corrosive sites.

Product Summary

CL201-2 nanometer painted zinc alloy compact concealed hinge is the small-size variant in the CL201 hidden hinge product line. Combining fully embedded seamless design, 90° safety angle limit, compact M4 stud mounting and steel reinforced pin, it provides a space-saving, cost-effective hidden installation solution for small electrical boxes, instrument enclosures and compact equipment cabinets, completing the CL201 series product matrix together with standard size and stainless steel versions.

CL201-2 nanometer painted zinc alloy 90 degree compact concealed cabinet hinge steel pin industrial hinge