Friction-Fit Mounting Overview
The Knuffi Edge Protection Type B profile (Article Number 11011 / PB-11011) features an integrated mechanical clamp-on channel designed for fast, tool-free installation directly onto exposed industrial edges. Unlike surface-mounted or self-adhesive bumper guards, Type B secures onto structural edges entirely through precision friction fit. The internal channel is molded to an 8 mm (0.31 in) opening width and a 19 mm (0.75 in) channel depth, matching the exact dimensional tolerances of standard 8 mm sheet metal plates, I-beam flanges, and fabricated steel framework.
Because the profile relies on direct friction and material tension from its flexible polyurethane (PUR) core rather than chemical adhesives, installation requires no cure time, priming agents, or specialized clamping hardware. The unit can be placed into service immediately upon attachment across indoor and outdoor operating environments.
Substrate Preparation and Compatibility Verification
Prior to mounting the 1-metre Knuffi Type B guard, inspect the contact flange or sheet edge to confirm dimensional and surface compatibility:
- Flange Thickness: Verify that the target substrate has a nominal thickness of 8 mm (0.31 in). The internal channel relies on compressive force against the steel or sheet metal edge to maintain grip under vibration and light contact.
- Flange Depth Clearance: Ensure there is at least 19 mm (0.75 in) of clear edge depth for the channel to fully seat against the root of the profile.
- Surface Condition: Ensure the target edge is ungreased, clean, and free of heavy loose rust, excess burrs, or oil films that could reduce mechanical friction.
- Target Profiles: Suitable substrates include structural steel girders, I-beam flanges, T-sections, mezzanine deck edging, machinery panels, and warehouse rack upright ends.
Step-by-Step Attachment Procedure
Fitting the Knuffi Type B 40 mm circular bumper guard is completed manually through a progressive push-fit technique:
- Step 1 — Channel Alignment: Position one end of the 1 m profile over the lead edge of the 8 mm metal flange, aligning the 8 mm x 19 mm channel slot directly over the substrate.
- Step 2 — Initial Seating: Firmly press the starting section of the profile onto the edge until the metal reaches the full 19 mm base depth of the channel.
- Step 3 — Progressive Engagement: Working continuously along the 1-metre length, apply steady manual downward pressure to seat the entire strip uniformly onto the flange. Avoid twisting the profile during engagement to keep the yellow and black hazard striping aligned straight.
- Step 4 — Final Inspection: Visually inspect the profile along its entire run to verify that the channel is fully seated to its complete 19 mm depth without gaps or pinched lip sections.
Cutting and Custom Sizing on Site
When protecting shorter edge runs, corner intersections, or machinery borders, Knuffi Type B can be sized accurately at the workstation or installation site:
- Tooling: Use a standard utility knife, box cutter, or heavy-duty sharp workshop blade.
- Measurement: Measure the exact length of the structural flange. Mark the cut line on the outer abrasion-resistant polyurethane film.
- Cutting Action: Make a square, perpendicular cut straight through the 40 mm diameter circular PUR foam core and the counter-printed outer foil. The homogeneous CFC-free PUR foam cuts cleanly without fraying, tearing, or shedding fibers.
- Miter Joints: For 90-degree corner framing around steel plate corners or window openings, 45-degree miter cuts can be made manually with a guided blade.
Temperature and Environmental Considerations
Knuffi Type B edge guards are engineered for broad environmental resilience, operating across a temperature range of -40 °C to +100 °C (-40 °F to 212 °F). While the flexible PUR foam remains elastic across this spectrum, performing installation at moderate ambient temperatures allows the 8 mm channel lips to open and seat over steel edges with minimal effort.
Repositioning, Maintenance, and Removal
Because the Type B guard utilizes an adhesive-free mechanical grip, it can be easily removed, repositioned, or transferred to alternate machinery and structural locations without leaving adhesive residue or requiring solvent cleanup. Maintenance involves wiping the weather- and UV-resistant counter-printed polyurethane surface with standard mild industrial detergents or water.