Centre Axle Trailer

Centre Axle Trailers (CATs) are specialized for short-to-medium-haul urban/rural logistics, characterized by their axle(s) positioned near the trailer's center of gravity and articulated tow-bar connection to light/medium-duty trucks. They excel in maneuverability (small turning radius) and flexibility, ideal for distribution of consumer goods, fresh produce, and light construction materials. Below are detailed general specifications, categorized by application type.

1. Core Classification by Application Type

2. Universal Basic Specifications

2.1 Axle Configuration & Load Capacity

2.2 Overall Dimensions (Compliant with Global Standards)

All dimensions adhere to GB 1589-2016 (China) and ECE R110 (EU) to ensure road compliance:

2.3 Frame Material & Structure

Main Frame Material:

Light-duty (10–12 tons): Q345B high-strength carbon steel (main beam section: 250×150×8×10 mm).

Medium-duty (15–20 tons): Q690 ultra-high-strength steel (main beam section: 300×180×10×12 mm).

Surface Treatment:

Shot blasting (rust removal, Sa2.5 grade) + electrostatic epoxy painting (2 layers, total thickness ≥80 μm) – resists corrosion from rain, road salt, and dust for 8+ years.

Optional galvanized coating (Zn ≥100 μm) for refrigerated models (to withstand humid environments).

3. Type-Specific Detailed Specifications

3.1 Stake-side Centre Axle Trailer

Stake Structure:

Material: 40×40×3 mm angle steel (foldable stakes) or 50×50×4 mm square steel (fixed stakes).

Quantity: 4–6 stakes per side; height 1.2–1.5 m (adjustable via bolted connections).

Loading Aids:

Optional side ramps (length 2.0–2.5 m, load capacity 3 tons/each) for small equipment (e.g., hand trucks).

8–10 D-type cargo rings (5-ton tensile strength) on frame edges for securing cargo with ropes.

3.2 Box-type Centre Axle Trailer

Box Structure:

Material: Outer layer (1.5 mm cold-rolled steel) + inner layer (1.2 mm galvanized steel) + middle layer (50 mm EPS foam insulation – for basic moisture protection).

Door Configuration: Rear double swing doors (width 2.4 m, height 2.2 m) + optional side sliding door (width 1.8 m) for side loading.

Interior Features:

Optional adjustable partition boards (3–4 pieces) to separate different cargo types; anti-slip rubber floor mats (2 mm thick) to prevent carton sliding.

3.3 Refrigerated Centre Axle Trailer

Insulated Box:

Material: Outer layer (2.0 mm fiberglass-reinforced plastic, FRP) + inner layer (1.5 mm stainless steel) + middle layer (80–100 mm polyurethane foam – thermal conductivity ≤0.022 W/(m·K)).

Refrigeration Unit: Independent diesel-powered unit (cooling capacity 8–12 kW) or electric unit (for urban areas with noise restrictions); temperature control range: -25°C ~ +10°C.

Temperature Monitoring:

Built-in temperature sensor (accuracy ±0.5°C) with digital display on the trailer's front panel; optional GPS integration for remote temperature tracking.

3.4 Dump Centre Axle Trailer

Tipping System:

Power Source: Tractor PTO (540 rpm) or independent 12V hydraulic pump (for small trucks without PTO).

Tipping Direction: Rear tipping (standard) or side tipping (optional); max tipping angle: 45° (rear) / 35° (side).

Lifting Time: 15–20 seconds (from horizontal to max angle); lowering time: 10–15 seconds.

Floor Material:

8–10 mm thick manganese steel (65Mn) – wear-resistant for gravel/construction waste; smooth surface to reduce cargo residue.

4. Safety & Tow System

4.1 Braking & Stability

Braking System:

Main Brakes: Pneumatic drum brakes (drum diameter 350–400 mm) – standard for all models; optional disc brakes (400 mm diameter) for refrigerated models (better heat dissipation).

Safety Features: ABS (Anti-lock Braking System, ECE R13-compliant) + EBD (Electronic Brakeforce Distribution) – shortens braking distance by 15% vs. non-ABS trailers.

Tow Connection:

Tow Bar: 50×80 mm rectangular steel (length 1.2–1.5 m); articulated joint with 360° rotation – improves maneuverability on uneven roads.

Hitch Type: 50 mm standard ball hitch (compatible with most light/medium-duty trucks); optional 70 mm heavy-duty hitch for 2-axle models.

4.2 Tire & Wheel

Tire Specification:

1-Axle Models: 7.50R16 radial tires (load index 126/124 – max load 3,000 kg/tire); 2 tires + 1 spare.

2-Axle Models: 8.25R16 radial tires (load index 130/128 – max load 3,550 kg/tire); 4 tires + 1 spare.

Wheel Rim: 16×5.5 inches steel rim (anti-corrosion spray coating); optional aluminum alloy rims (reduces unsprung weight by 15%).

5. Compliance & Certification

International Standards:

ISO 3874 (road safety for commercial vehicles), ISO 1496-1 (general cargo container compatibility – for box-type models).

Regional Standards:

China: GB 1589-2016 (vehicle dimensions/load limits), GB 7258 (braking safety).

EU: ECE R13 (braking systems), ECE R28 (vehicle weight limits).

US: FMVSS 121 (braking), FMVSS 108 (lighting and reflective devices).

Special Certifications:

Refrigerated models: ISO 8048 (thermal performance testing), HACCP (for food transport).

Dump models: GB/T 18576 (dump trailer safety requirements).

6. Optional Configurations

Operational Aids:

GPS tracking system (with real-time location, speed, and cargo status monitoring).

Rearview cameras (with night vision) and reverse sensors – reduces collision risk during urban parking.

Comfort Upgrades:

Electric landing legs (12V, 5-ton capacity) – replaces manual cranking for easier hitch connection.

Toolbox (mounted on frame side) – stores maintenance tools and spare parts.

Notes

Truck Compatibility: Ensure the tractor's towing capacity matches the trailer's rated payload (e.g., 10-ton trailer requires a truck with ≥12-ton towing capacity).

Maintenance: Check brake pads every 10,000 km; replace hydraulic oil (for dump/refrigerated models) every 2,000 working hours.

Load Distribution: Avoid overloading the front/rear of the trailer – keep cargo centered over the axle(s) to maintain stability.

The Centre Axle Trailer (Box-type, Model: CAT-B180) is a versatile medium-duty solution engineered for short-to-medium-haul urban logistics-specializing in transporting moisture-sensitive and high-value cargo like home appliances (refrigerators, washing machines), dry food (grains, snacks), and electronics (laptops, smartphones). It features a 2-axle configuration, 18-ton rated payload, and an enclosed rigid box with IP65 dustproof/waterproof performance, plus a centre-axle design that delivers a 7.2-meter turning radius (30% smaller than same-length semi-trailers)-ideal for navigating narrow city streets, residential areas, and supermarket loading docks. Compliant with global standards (GB 1589-2016, ECE R13, ISO 3874), it pairs seamlessly with 160–220 HP light/medium-duty trucks (Foton Ollin, JMC Kaiyun, Isuzu ELF) via a 50mm standard ball hitch. This trailer balances durability, loading efficiency, and maneuverability-perfect for logistics firms, 商超 chains (supermarket chains), and appliance distributors aiming to optimize last-mile and regional delivery cycles.

Product Content Introduction

Centre Axle Trailer (Box-type, Model: CAT-B180) adopts a high-strength, lightweight frame and enclosed box structure to protect cargo and maximize payload. Its main frame uses Q690 ultra-high-strength steel (300×180×10×12 mm main longitudinal beams) with 12 crossbeams (160×100×8 mm rectangular tubes) welded at 600mm intervals-ensuring even weight distribution across the 18-ton payload while resisting bending under concentrated loads (e.g., a 500L refrigerator). The enclosed box features a 3-layer composite structure: outer 1.5mm cold-rolled steel (anti-impact), inner 1.2mm galvanized steel (rust-resistant), and middle 50mm EPS foam (moisture insulation)-achieving IP65 dustproof/waterproof rating to shield cargo from rain, dust, and road spray. The frame and box undergo shot blasting (Sa2.5-grade rust removal) + double-layer electrostatic epoxy painting (80μm thickness), maintaining corrosion resistance for 8+ years in urban and suburban environments.

Centre Axle Trailer (Box-type, Model: CAT-B180) is equipped with a robust 2-axle system and suspension for stable medium-duty transport. The axles are SAF M-series medium-duty units (shaft diameter 90mm, forged 20CrMnTi alloy steel) with a 4.5-meter wheelbase (axle to tow hitch)-distributing the 18-ton payload to ≤9 tons per axle (complying with China's ≤10 tons/axle and EU's ≤9 tons/axle urban transport limits). It uses reinforced leaf spring suspension (10 leaves per axle, 60Si2Mn steel) that absorbs vibrations from potholed city roads, reducing damage to fragile cargo like glass-fronted refrigerators. The trailer is fitted with 4×8.25R16 radial tires (load index 130/128, max load 3,550kg/tire) with deep 16mm treads-enhancing traction on wet asphalt and ensuring a 100,000km service life before tire replacement.

Centre Axle Trailer (Box-type, Model: CAT-B180) prioritizes loading efficiency with flexible door configurations and interior optimization. The rear features double swing doors (2.4m width × 2.2m height) with hydraulic door stays-holding doors open at 90° or 180° for easy forklift access, eliminating the need for manual door support. An optional side sliding door (1.8m width × 2.2m height) is available for curbside loading (e.g., at supermarket back entrances where rear access is limited). The box interior is equipped with 4 adjustable partition boards (1.2m height, 5mm thick plywood) that split the 8.5m (length) × 2.55m (width) × 2.4m (height) space into 2–4 compartments-preventing cargo shifting during transport (critical for stacked cartons of snacks). Anti-slip rubber mats (2mm thick, 1m×2m size) line the floor, increasing friction by 40% to avoid appliance sliding during sharp turns.

Centre Axle Trailer (Box-type, Model: CAT-B180) integrates advanced safety systems for urban road reliability. It uses 400mm diameter pneumatic drum brakes (with automatic slack adjusters) paired with ECE R13-certified ABS and EBD (Electronic Brakeforce Distribution)-reducing emergency braking distance by 18% vs. non-ABS trailers, a key safety feature for busy city streets with frequent stop-and-go traffic. A spring-loaded mechanical parking brake acts on both axles, securing the trailer firmly when parked on 10° slopes (e.g., hilly residential areas) during loading. The tow bar (50×80mm rectangular steel, 1.4m length) features a 360° articulated joint with a safety lock pin-preventing disconnection during rough road conditions and allowing smooth steering when navigating tight alleys (turning radius as small as 7.2m).

Centre Axle Trailer (Box-type, Model: CAT-B180) meets global compliance standards to enable cross-market sales and operation. It adheres to China's GB 1589-2016 (total length 8.5m, total width 2.55m, total height 2.8m-within urban transport size limits), EU ECE R13 (braking performance) and ECE R28 (weight limits), and US FMVSS 108 (lighting requirements). The box has passed rain testing (IP65: 100L/min water spray for 30 minutes with no interior leakage) and static load testing (22 tons for 4 hours with no frame deformation)-test reports are provided in English, Spanish, and Mandarin to simplify customs clearance for export clients. For coastal regions (e.g., Southeast Asia), an optional galvanized box (Zn coating ≥100μm) is offered to enhance resistance to saltwater corrosion.

Centre Axle Trailer (Box-type, Model: CAT-B180) offers practical optional upgrades to match client-specific needs. For temperature-sensitive cargo (e.g., powdered milk), a 12V electric ventilation fan (200m³/h airflow) can be installed on the box roof-reducing interior humidity by 30% to prevent moisture damage. A GPS tracking system (with real-time location, speed, and door open/close status monitoring) is available for fleet management, allowing logistics firms to track deliveries and prevent cargo theft. Electric landing legs (12V, 5-ton capacity) replace manual cranking, cutting hitch connection time by 50% (ideal for drivers making multiple daily deliveries). A side-mounted toolbox (600mm×400mm×500mm) stores maintenance tools (wrenches, tire pressure gauges) and spare parts (brake pads, fuses) for on-road repairs.

Centre Axle Trailer (Box-type, Model: CAT-B180) provides comprehensive after-sales support to minimize downtime for clients. The manufacturer offers a 2-year warranty for the frame and axles, plus free replacement of wear parts (brake pads, door hinges, rubber mats) within 6 months. On-site training is provided for drivers and maintenance teams-covering hitch connection, brake adjustment, and partition board installation. For urgent issues (e.g., hydraulic door failure), 24/7 technical support is available via phone and email, with replacement parts shipped within 48 hours to major cities globally. This support ensures the trailer maintains high operational availability (≥95%) for time-sensitive urban delivery tasks (e.g., supermarket daily restocks).

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