CL115-2 Black Powder Coated Steel Oil Damping Strap Hinge

CL115-2 Black Powder Coated Steel Oil Damping Triangular Strap Hinge

CL115-2 damping strap hinge is a heavy-duty industrial buffer hinge made of thick carbon steel with matte black electrostatic powder coating. It adopts a triangular extended force arm structure with built-in damping oil inside the hinge barrel, realizing slow, silent and cushioned closing to avoid slamming impact. Equipped with six 90-degree countersunk mounting holes of Φ8.5, it achieves flush screw installation, widely applied to electrical control cabinets, test equipment enclosures, automation machine protective doors and indoor industrial boxes.

Detailed Technical Parameters

• Model Number: CL115-2
• Raw Material: High-strength Carbon Steel
• Surface Treatment: Black Electrostatic Powder Coating
• Core Function: Built-in Damping Oil for Buffer Slow Closing
• Mounting Holes: 6 pcs, Φ8.5 with Φ13.5×90° countersunk sink
• Plate Thickness: 3mm
• Total Length: 133.5mm (39.5mm + 94mm)
• Structure Type: Triangular Long Arm Strap Hinge

The 3mm thick cold-rolled steel plate provides excellent rigidity and anti-deformation performance, bearing medium and heavy cabinet doors stably during long-term frequent opening and closing. Black powder coating forms a compact protective layer on the steel surface, effectively preventing oxidation, rust and surface scratches, greatly extending the service life in dry indoor workshop environments. All six mounting holes are processed with standard 90-degree countersunk chamfer, allowing screws to be fully embedded without protruding, keeping the cabinet panel surface flat and neat, and avoiding scratch hazards during operation. The internal damping oil core eliminates sharp slamming noise, protects cabinet shell, lockset and internal electrical components from collision damage.

Core Product Competitive Advantages

1. Built-In Oil Damping Buffer Closing Function The biggest highlight of CL115-2 is the integrated damping oil cylinder inside the hinge shaft. The door will slowly fall down instead of closing sharply, reducing impact force, lowering noise, and protecting expensive instruments, circuit boards and switches inside the equipment cabinet.
2. Anti-Rust Black Powder Coating Finish Compared with bare steel, powder spraying has stronger adhesion and weather resistance, resistant to fingerprints, abrasion and slight moisture corrosion, with uniform matte black appearance that matches most industrial equipment shell styles.
3. Six-Point Countersunk Flush Installation 6 evenly distributed countersunk holes disperse stress thoroughly, improve overall installation firmness, and the sunk screw design maintains the integrity and aesthetics of the equipment outer casing, which is a standard requirement for high-end automation cabinets.
4. Triangular Long Arm Force-Bearing Design Extended triangular arm lengthens the force arm distance, optimizes torque distribution, reduces fatigue wear of the hinge pin, and keeps rotation stable and smooth even under continuous daily use.
5. Cost-Effective Carbon Steel Structure Carbon steel material balances load capacity and procurement cost, more economical than stainless steel versions for dry indoor non-corrosive working conditions, helping clients control overall hardware procurement budget.

Main Application Industry Scenarios

1. Industrial PLC control cabinets, frequency converter boxes, electrical distribution enclosures and automation equipment housings
2. Laboratory testing instruments, precision inspection equipment, measuring devices and test bench protective covers
3. CNC machine tool safety guard doors, mechanical equipment side panels and production line protective casings
4. Office heavy-duty metal cabinets, server auxiliary boxes and electrical equipment waterproof indoor enclosures
5. Medical indoor equipment casings, analytical instruments and low-corrosion laboratory equipment doors

Installation & Selection Guidelines

1. Match M8 countersunk flat head screws for Φ8.5 holes to complete fully flush installation on the cabinet panel.
2. This steel powder coated model is suitable for dry indoor environments only; for coastal, humid, salt fog or chemical workshops, select the CL115-1 stainless steel polished anti-corrosion version.
3. Do not disassemble the hinge barrel randomly to prevent damping oil leakage and loss of buffer function.
4. Regularly check screw tightness to avoid loosening caused by equipment long-term vibration, ensuring stable damping effect.

Product Summary

In conclusion, CL115-2 black powder coated steel damping strap hinge solves the pain point of violent slamming and component damage of ordinary cabinet hinges with its built-in oil buffer core. With solid carbon steel body, scratch-resistant black powder coating, triangular high-load structure and six-point countersunk hidden installation, it becomes a cost-effective standardized buffer hinge solution for indoor industrial equipment and electrical enclosure manufacturers.