CL203-4L & CL203-4R SUS304 Stainless Steel Mini 180° Lift-Off Detachable Industrial Hinges

CL203-4 is a compact small-sized lift-off split hinge made of SUS304 stainless steel, divided into left-handed CL203-4L and right-handed CL203-4R for directional installation. It adopts vertical split pin tool-free quick disassembly design, supports 180° full flat opening, and reserves 4 M4 through mounting holes. Two surface treatments are optional: matte black powder coating and magnetic polishing natural stainless steel finish. Outstanding rust and corrosion resistance makes it ideal for humid, outdoor, chemical and marine environment equipment enclosures.

Full Technical Parameters

• Model: CL203-4L (Left Hinge), CL203-4R (Right Hinge)
• Material: Carbon Steel / SUS304 Stainless Steel (304 stainless steel is the premium version)
• Surface Finishes (2 Options):
  1. Black electrostatic powder coating
  2. Magnetic polishing (brushed stainless steel silver finish)
• Max Opening Angle: 180°
• Overall Dimensions: Total width 20.5mm, height 25.5mm, thickness 10mm
• Mounting Specification: 4 × M4 mounting holes (4-M4)
• Structure: L/R paired vertical lift-off detachable hinge, mini compact lightweight version

1. Core Upgrade: SUS304 Stainless Steel Anti-Corrosion Material

Different from zinc alloy CL203-1~3 series, CL203-4 upgrades to SUS304 stainless steel substrate:

• Excellent oxidation resistance, rust-proof and acid-alkali corrosion resistance;
• Adapt to wet workshops, coastal salt fog environment, food equipment, water treatment cabinets and outdoor electrical boxes;
• Higher mechanical strength, wear resistance and service life than zinc alloy.

2. Independent Left & Right Directional Pairing

Clearly marked L/R on the hinge base to distinguish opening direction, avoid reverse installation failure. Small mini outline occupies little installation space, perfect for thin cabinet doors, small control boxes, instrument panels and electrical junction boxes with limited mounting area.

3. Tool-Free Lift-Off Quick Detach Function

Split central pivot structure allows directly lifting the door upward to separate two hinge halves without any tools. Greatly simplifies door removal, equipment internal inspection, wiring maintenance and component replacement work.

4. Dual Optional Surface Finishes

1. Black Powder Coating Version: Matte black industrial appearance, scratch resistant, dustproof, low-key for standard automation cabinets;
2. Magnetic Polishing Stainless Steel Version: Natural silver brushed texture, retains full anti-rust performance, higher grade for medical, food and sanitary machinery.

5. 4×M4 Four-Point Stable Mounting

Four M4 standard mounting holes realize four-point stress dispersion, effectively prevent small thin doors from sagging or hinge loosening after long-term frequent opening and closing. Standard M4 screws are easy for customers to purchase and assemble.

6. 180° Full Opening for Unobstructed Operation

180-degree maximum rotation angle flips the door flat against the cabinet side wall, completely exposing internal circuit and components for convenient troubleshooting and wiring modification.

Core Selling Points

1. SUS304 Stainless Steel Rust-Proof Body Superior corrosion resistance for damp, coastal and harsh working environments.
2. Mini Compact L/R Directional Design Small footprint, CL203-4L left / CL203-4R right marked for error-free installation.
3. Two Interchangeable Surface Finishes Black powder coat or polished stainless steel to match different cabinet appearance requirements.
4. 4×M4 Four-Point Fixed Mounting Uniform force bearing, stable connection for thin lightweight equipment doors.
5. Tool-Free Lift-Off Disassembly + 180° Full Opening Efficient maintenance and fully accessible internal cabinet space.

Application Scenarios

1. Outdoor electrical control boxes, marine equipment cabinets, coastal salt-fog environment enclosures
2. Food processing machinery, medical devices, laboratory analytical instruments and sanitary equipment
3. Small PLC junction boxes, instrument panels, automation thin door control cabinets
4. Water treatment equipment, chemical low-corrosion workshop protective boxes
5. Mini industrial equipment casings with limited installation space

Installation & Selection Notes

1. Direction Selection Rule: CL203-4L for left-swing doors, CL203-4R for right-swing doors;
2. Material Choice: Select SUS304 stainless steel for humid/outdoor/corrosive sites, carbon steel for dry indoor low-cost projects;
3. Finish Selection: Black powder coat for general industrial use, magnetic polishing for hygiene and high-grade equipment;
4. Load Limit: Designed for lightweight small cabinet doors, install two hinges symmetrically for longer panels;
5. Maintenance: Regularly add anti-rust lubricant to the pivot to keep smooth lifting and rotation.

Product Summary

CL203-4L/4R is the anti-corrosion mini stainless steel supplement of the CL203 lift-off hinge family. Adopting SUS304 stainless steel substrate, dual surface options, compact L/R split structure and 4-M4 mounting holes, it fills the demand for small-size, rust-resistant detachable hinges, being the optimal hardware solution for outdoor, coastal, food and medical industrial enclosures.

CL203-4L CL203-4R SUS304 stainless steel lift off hinge black powder coat magnetic polishing 4-M4 holes 180 degree L/R detachable hinge