Overview
The Heavy-Duty Flip-Up Countertop Flap Stay Lift Damper Mechanism is an architectural-grade hydraulic pass-through hardware solution engineered for commercial bar service counters, restaurant pass-through counters, reception desks, and residential kitchen island access flaps. Fabricated from solid heavy-gauge cold-rolled carbon steel and precision zinc alloy with an integrated high-force hydraulic damping piston, this heavy-duty mechanism counterbalances heavy wooden and solid-surface countertop flaps. It provides effortless, assisted opening, a secure 95° hold-open position that never blocks walkthrough access, and controlled, soft-close descent to eliminate countertop slamming and pinched fingers.

Key Features

• Assisted Lift & Effortless Opening: Internal heavy-duty spring and hydraulic tension mechanism counterbalances countertop weight, allowing staff and homeowners to lift heavy pass-through flaps with minimal effort.
• Full-Range Hydraulic Soft-Close Buffering: Built-in hydraulic cylinder cushions descent from wide angles down to the final few degrees, preventing loud slamming, edge chipping, and accidental finger pinches.
• Stable 95° Hold-Open Positioning: Flap securely locks at a 95° vertical angle, keeping the passage aisle completely open and barrier-free during high-traffic service hours.
• Heavy-Gauge Cold-Rolled Steel Construction: Reinforced carbon steel housing and articulated chrome-plated steel pivot linkage withstand rigorous daily commercial cycles without sagging or deforming.
• Compact Low-Profile Surface Mount: Slim architectural casing (finished in Dark Bronze / Coffee Brown) mounts flush against the inner cabinet side or wall face, protected by a sleek snap-on decorative cover.
• Adjustable Support Strength: Features an integrated tension adjustment screw to fine-tune torque and damping resistance to the specific weight and length of the countertop flap.

Technical Specifications

• Product Type: Flip-Up Countertop Flap Stay Lift Damper (Bar Counter Lift Mechanism)
• Materials: Heavy-Duty Cold-Rolled Carbon Steel, Precision Die-Cast Zinc Alloy, High-Tension Alloy Springs, ABS Protective Casing
• Finish / Color: Architectural Dark Bronze / Coffee Brown Cover with Mirror-Polished Chrome Pivot Arm
• Opening Angle: 95° Hold-Open Position
• Damping Action: Hydraulic Soft-Close Buffer (active throughout closing stroke)
• Applicable Countertop Flap Specifications:
  • Applicable Flap Length (Projection): 500 mm – 900 mm (19.7" – 35.4")
  • Applicable Flap Width: 400 mm – 800 mm (15.7" – 31.5")
  • Applicable Countertop Thickness: 18 mm – 35 mm (3/4" – 1-3/8") solid wood, plywood, or engineered stone
  • Load Capacity: Supports flap weights from 5 kg up to 15 kg (11 lbs – 33 lbs) per mechanism (can be paired for extra-wide/heavy counters)
• Mechanism Dimensions:
  • Main Damper Housing: 180 mm (L) x 80 mm (W) x 35 mm (D)
  • Top Flap Mounting Bracket: 160 mm (L) x 50 mm (W)
• Applications: Restaurant and bar service pass-throughs, hotel reception desks, bank teller counters, kitchen island lift-up gates, and retail cashier access flaps

Wholesale & OEM Capabilities

• Direct Factory Supply: Precision manufactured by Ningbo Dimon for commercial fixture builders, millwork contractors, and architectural hardware distributors.
• OEM Customization: Custom cover colors (Matte Black, Stainless Silver, Pure White), custom spring Newton ratings for extra-heavy stone counters, and private-label packaging.
• Export Packaging: Packed individually with mounting hardware and illustrated installation templates in protective inner cartons; 10 to 20 sets per master export carton suited for containerized ocean shipping.