Introduction
Door closers are mechanical devices that automatically close doors after they’ve been opened, controlling speed, latching and preventing slam-through damage. They play key roles in fire protection, security, accessibility and energy efficiency—properly installed closers can reduce heating and cooling losses by up to 15% through reliable door sealing.
Selection Criteria
Choosing the right door closer requires assessing:
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Door weight, size and material (wood, metal, glass)
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Mounting location: surface (door/frame) or concealed (jamb, transom, floor)
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Traffic frequency and EN power size (1–7) for duty cycle and closing force
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Aesthetic requirements and hardware visibility
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Fire-rating compliance (BS EN 1154 classification, CE marking, intumescent protection)
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Functional features: adjustable sweep/latch speed, backcheck, delayed-action, hold-open
1. Surface-Mounted Regular-Arm (Scissor-Arm) Door Closer
Construction: hydraulic cylinder driving a rack-and-pinion piston, linked to a “Z-shaped” scissor arm on the pull side. Technical specs:
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EN power sizes 1–4 (test door up to 80 kg at 1100 mm)
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Dual valves for sweep and latch adjustment
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Grade 1–3 durability (500 000+ cycles for high-traffic)
Advantages:
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Cost-effective, easy retrofit
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Stable closing force
Limitations:
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Visible hardware, less aesthetic
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Requires full frame clearance
Applications: offices, residential entrances.
2. Surface-Mounted Parallel-Arm Door Closer
Mechanism: hydraulic body mounts on push side, with two arms sitting flat in parallel to door surface when closed. Technical specs:
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EN sizes 2–4; typical test door up to 80 kg at 1100 mm
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Parallel linkage reduces projection by ~20 mm
Advantages:
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Low-profile, cleaner appearance
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Stable closing, protects hardware from tampering
Limitations:
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Reduced mechanical advantage—unsuitable for very heavy doors
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Slightly higher opening force
Applications: commercial lobbies, schools, hospitals.
3. Surface-Mounted Slide-Arm (Slide-Track) Door Closer
Design: cam and track mechanism replaces standard arms; a sliding rail mounted to frame or door interfaces with a cam on the hydraulic body. Technical specs:
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EN sizes 2–3 (up to 60 kg test door)
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Integrated dual-valve adjustment
Advantages:
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Gentle opening force—ADA-friendly
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Medium aesthetic impact
Limitations:
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Lower load capacity
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Track can accumulate debris
Applications: care homes, classrooms, light-traffic interior doors.
4. Surface-Mounted Cam-Action Door Closer
Features: internal cam replaces rack-and-pinion for exceptionally smooth operation; often rated for EN sizes 3–5 (60–100 kg test door). Technical specs:
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High-cycle durability (>1 000 000 operations)
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Fine-tune valves for sweep, latch and backcheck
Advantages:
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Precision control, ultra-smooth
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Suitable for heavy-use areas
Limitations:
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Premium cost
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Visible exposed body
Applications: upscale hospitality, healthcare corridors.
5. Concealed Overhead (Transom-Mounted) Door Closer
Installation: hidden in the transom or head frame, linking to an arm assembly only revealed when the door opens. Technical specs:
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EN sizes 2–5 (60–100 kg test door)
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Optional hold-open and backcheck
Advantages:
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Fully concealed—preserves architectural integrity
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Protected from vandalism
Limitations:
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Complex frame modification and precise alignment
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Higher material and labor costs
Applications: luxury retail, galleries, executive suites.
6. Concealed Jamb-Mounted Door Closer
Design: hydraulic or spring-based mechanism mortised into the door’s hinge jamb; connects to pivot via internal rod. Technical specs:
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EN sizes 1–3 (20–60 kg test door)
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Compatible with fire-rated assemblies when intumescent seal kits are used
Advantages:
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Invisible hardware—ideal for boutique interiors
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Tamper-resistant
Limitations:
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Only for light to medium doors
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Requires precise milling of frame
Applications: high-end residential, boutique offices.
7. Floor-Spring (Concealed Pivot) Door Closer
Construction: hydraulic unit recessed under the floor slab, with pivot plates in the door bottom and head. Technical specs:
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EN sizes 4–7 (80–160 kg test door)
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Single or double-action swing
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Optional adjustable backcheck, hold-open
Advantages:
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Supports very heavy doors and glass storefronts
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Two-way swing capability
Limitations:
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High-cost installation; slab modification
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Maintenance access under floor
Applications: heavy glass entrances, revolving doors, high-traffic public halls.
8. Hydraulic Door Closer
Overview: umbrella term for closers using viscous fluid to modulate closing; includes many surface-mount types (arm, slide, cam). Technical specs:
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Adjustable via sweep and latch valves
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Available EN sizes 1–7; fire-rated variants with CE marking
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Durability grades 1–4 based on BS EN 1154: test cycles, corrosion resistance
Applications: versatile across residential, commercial, fire-rated doors.
9. Pneumatic Door Closer
Mechanism: spring loaded in an air-filled cylinder; door movement compresses air to resist swing. Technical specs:
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EN sizes 1–2 (light interior doors)
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No hydraulic fluid—temperature-sensitivity can affect performance
Advantages:
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Low cost (USD 30–100)
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Quiet, minimal maintenance
Limitations:
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Limited cycle life (5 000–10 000 cycles)
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Unsuitable for heavy or high-traffic doors
Applications: bedroom doors, light interior office partitions.
10. Electromechanical / Electromagnetic Hold-Open Door Closer
Combination: hydraulic or spring closer paired with an electromagnetic hold-open that engages while powered. Technical specs:
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EN sizes 3–6 (60–120 kg test door)
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Releases automatically on power failure or fire alarm, integrating with building safety systems
Advantages:
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Meets fire egress requirements; holds open for accessibility
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Centralized control via fire panel
Limitations:
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Requires electrical wiring and emergency power integration
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Higher initial hardware and installation cost
Applications: hospital corridors, fire exits, secure laboratories.
Comparative Overview
Type | Mounting | EN Size Range | Visibility | Key Features |
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Regular-Arm (Scissor) | Surface (pull side) | 1–4 | High | Economical; easy fit |
Parallel-Arm | Surface (push side) | 2–4 | Medium | Low-profile; moderate force |
Slide-Arm (Slide-Track) | Surface | 2–3 | Medium | ADA-friendly; cam action |
Cam-Action | Surface | 3–5 | Medium | Smooth precision; high cycle life |
Concealed Overhead (Transom) | Frame (transom) | 2–5 | Low | Hidden; vandal-proof |
Concealed Jamb | Frame (jamb) | 1–3 | Low | Invisible; tamper-proof |
Floor-Spring (Pivot) | Floor | 4–7 | Low | Heavy-duty; double-action |
Hydraulic | Surface/frame/floor | 1–7 | Varies | Fluid-damped; fire-rated options |
Pneumatic | Surface/frame | 1–2 | Medium | Air-resisted; low cost |
Electromechanical / Mag. Hold-Open | Surface + wiring | 3–6 | Medium | Fire-linked hold-open; integrated control |
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Follow manufacturer’s template for accurate drill-point layout.
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Adjust sweep and latch valves per door weight and closing speed requirements.
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Inspect every 6–12 months: torque fasteners, check fluid leaks, clean tracks, lubricate pivots.
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For fire doors, use closers certified under BS EN 1154 (size ≥3) and intumescent accessories.
Future Trends & Considerations
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IoT-enabled closers with cloud-based diagnostics for predictive maintenance
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Low-viscosity, eco-friendly hydraulic fluids to reduce environmental impact
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Integration with access control and building-management systems for centralized operation
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Advanced materials (composite arms, self-lubricating bushings) to extend product life
Selecting the optimal door closer demands matching mechanical specifications with user-experience, architectural, and regulatory requirements. By understanding the ten principal types—and their technical nuances—you’ll ensure safety, performance and aesthetic harmony in any setting.
QTE Technologies offers a wide range of door closers from trusted brands at competitive prices. We are a global MRO provider serving customers in over 180 countries. Established in 2010, we supply over 1 million products across every industry and technology. Additionally, you can reach us anytime via 24×7 chat support, phone, WhatsApp or email. Discover what our valued customers have to say about our services on our dedicated review page.
Post Author By QTE Technologies Editorial Staff (with a solid background in both technical and creative writing - accumulated 15+ years of experience).