Switchgear Door Hinge

Model Options and Hole Configurations

The Switchgear Door Hinge comes in four variants: round hole in carbon steel, round hole in stainless steel, slotted hole in carbon steel, and slotted hole in stainless steel. The structural dimensions are identical across all four — the only difference is the shape of the mounting holes on the wing. Round holes fix the hinge in a set position once screwed down; slotted holes give some room to shift the hinge position before final tightening, which helps when fitting doors that need careful alignment against a seal or frame lip.

Choosing between round and slotted hole on this unit comes down to your installation workflow. If door position is straightforward and consistent across a production run, round holes are fine. If there's any variation in frame geometry between units or the door needs to be adjusted after initial fitting, the slotted hole version makes that process considerably less fiddly.

Structure and Dimensions

The door hinge has an overall height of 108 mm with a total body length of 125 mm. The inner span between the mounting wings is 75 mm, with a 25 mm centre section at the barrel. The barrel diameter is Φ6 mm, and the mounting wing is 140 mm tall with a 20 mm base width. Hole spacing on the wing runs at 51 mm and 25 mm centres, with 2×Φ5.5 mm fixing holes on the side profile.

The frame channel engagement on the Switchgear Door Hinge has a width of 20.5 mm (+0.4 mm tolerance) and a depth of 15 mm (-0.3 mm tolerance), with a barrel seat radius of R5.5 mm. The side profile shows a 21.5 mm total engagement height, a 13 mm inner contact depth, and a 5.5 mm lateral offset, with a 2.5 mm step at the channel entry. These dimensions define the frame channel geometry the hinge is designed to work with — worth confirming against your cabinet frame spec before ordering.

Material and Surface Treatment

The Switchgear Door Hinge is available in galvanized carbon steel and 304 stainless steel. The carbon steel version suits standard indoor enclosure environments — distribution boards, control panels, and equipment cabinets in dry or climate-controlled spaces where corrosion exposure is low. It's the more cost-effective option for high-volume cabinet builds where the installation environment is predictable.

The stainless steel door hinge is the right pick for outdoor switchgear, humid utility rooms, coastal installations, or any application where the enclosure is going to face moisture over its service life. Stainless also tends to get specified when the cabinet finish standard calls for consistent surface appearance across all hardware, since it holds its look better than galvanized steel over time in challenging conditions.

FAQ

Q1: What variants are available for the CL186? 

The CL186 comes in four variants: round hole carbon steel, round hole stainless steel, slotted hole carbon steel, and slotted hole stainless steel. All share the same body dimensions and frame channel engagement geometry.

Q2: What is the difference between the round hole and slotted hole versions? 

The round hole version fixes the hinge in a set position once screwed down. The slotted hole version allows the mounting position to be adjusted before final tightening, which is useful when door alignment needs to be fine-tuned during installation or when there is variation in frame geometry between cabinet units.

Q3: How is the CL186 installed?

The CL186 is screw-mounted. The mounting wing is fixed to the door panel using the provided holes, and the hinge body engages the cabinet frame channel. There is no welding required for this model.

Q4: What are the key dimensions of the CL186? 

The CL186 is 108 mm in overall height with a 125 mm body length and 75 mm inner span. The barrel is Φ6 mm. The mounting wing is 140 mm tall with a 20 mm base. Frame channel width is 20.5 mm (+0.4 mm) and depth is 15 mm (-0.3 mm).

Q5: What material should I choose for outdoor enclosures? 

The stainless steel version is the right choice for outdoor installations, humid environments, or anywhere corrosion resistance is a long-term requirement. The galvanized carbon steel version suits standard indoor cabinet applications.

Q6: Is the CL186 a concealed hinge? 

Yes — the CL186 Switchgear Door Hinge sits inside the cabinet frame channel when the door is closed, leaving no visible hardware on the exterior door face. The hinge body is fully recessed within the frame profile.

Q7: Can the door be removed after installation? 

Yes. The CL186 is a detachable hinge — the door can be lifted off the frame channel without tools once the hinge is disengaged. This makes it practical for cabinet assembly lines and field maintenance where periodic door removal is needed.

Q8: What cabinet types is the CL186 suitable for? 

The CL186 concealed hinge is used on switchgear cabinets, electrical distribution boxes, control cabinet doors, and industrial equipment enclosures — anywhere a detachable, concealed hinge with a clean exterior profile is the preferred specification.