KPXW Trackless Electric Flat Car for Heavy Loads
Product Introduction
The KPXW Series Trackless Electric Flat Car (also known as KPW Trackless Flat Car) is designed with a rated load capacity of 5 to 50 tons, available in models KPXW-5 through KPXW-50. It is a widely used material transport solution for cross-bay movement in workshops. Powered by a battery pack and driven by an electric motor, this trackless flat car operates freely without the need for rails, enabling 360° in-situ rotation and exceptional maneuverability. Equipped with safety warning and anti-collision detection devices, it can also be fitted with a PLC Control System for fully automatic operation. Compared to rail-bound flat cars, the trackless design eliminates dependence on tracks, making material transport across factory floors and workshops faster and more convenient while saving time and infrastructure costs.
Product Specifications
- Product Name: KPXW Series Trackless Electric Flat Car
- Also Known As: Trackless Self-Propelled Flat Car / Trackless Transfer Cart / Trackless Flatbed Cart
- Model: KPXW-5 to KPXW-50 (7 specifications available)
- Rated Load Capacity: 5–50t
- Power Supply: Battery pack
- Drive System: Geared Motor Unit (All-in-One)
- Steering System: Mechanical, continuous steering while moving
- Operation Mode: Wired + Wireless remote control
- Category: Ground conveying machinery
- Place of Origin: Changyuan, Xinxiang, Henan
- Customization: Non-standard customization available
- Production Lead Time: 10–20 days
- Supply Coverage: Nationwide
- Delivery Method: Self-pickup or logistics shipping
Product Features
Trackless Free Movement: No rails required — powered by battery and driven by motor, it moves freely on any level concrete or steel plate floor with 360° in-situ rotation.
Safety Protection: Equipped with a Radar Ranging anti-collision system (3m to 0.3m detection range with automatic stop), and an audible and visual alarm device that triggers automatic stopping when obstacles are detected.
Smart Charging: Comes with a fully automatic intelligent charger; the battery is maintenance-free. The entire 5t–50t series supports both onboard and standalone charging options.
PLC Automation: Optional PLC Control System enables fully automatic operation, with automatic scheduling synchronized to production line rhythm.
Versatile Expansion: Optional add-ons include positioning devices, clamping mechanisms, lift platforms, turn signals, work lights, battery level indicators, and more.
Fuel-Free, Zero Emissions: Purely electric drive with no fuel required — ideal for indoor workshop environments with strict environmental requirements.
Working Principle
The KPXW Trackless Electric Flat Car is powered by a battery pack that supplies electricity through the electrical control module to the Geared Motor Unit (All-in-One) — an integrated motor, gearbox, and brake — which drives the wheels for forward and reverse movement. The steering system uses a mechanical steering mechanism that allows continuous turning while moving, with a minimum turning radius approximately equal to the wheelbase plus 1mm. The chassis is a welded steel plate beam structure that carries the load. The control system includes dual operation modes: wired pendant and wireless remote control. Radar Ranging anti-collision (deceleration begins at 3m, emergency stop at 0.3m) and an audible and visual alarm device ensure operational safety. A fully automatic intelligent charger manages the charging process automatically.
Product Structure
The KPXW Trackless Electric Flat Car consists of the following core components:
Chassis (Welded Steel Plate Beam Structure): The load-bearing main body, with steel plate thickness of 8–16mm.
Battery Pack: D-series traction batteries, 24–36 cells, maintenance-free.
Geared Motor Unit (All-in-One): Integrated gear motor driving the wheels.
Steering System: Mechanical steering with 360° in-situ rotation capability.
Control System: Wired + wireless remote control, PLC optional.
Safety System: Radar Ranging anti-collision, audible and visual alarm, electromagnetic braking.
Charging System: Fully automatic intelligent charger, available in onboard or standalone configurations.
Product Images
Technical Parameters
| Model | KPXW-5 | KPXW-10 | KPXW-15 | KPXW-20 | KPXW-30 | KPXW-40 | KPXW-50 |
|---|---|---|---|---|---|---|---|
| Rated Load Capacity(t) | 5 | 10 | 15 | 20 | 30 | 40 | 50 |
| Max.impact load(t) | 7.5 | 15 | 22.5 | 30 | 45 | 60 | 75 |
| Frame Structure | Steel Plate Welding Girder-Type Structure | ||||||
| Steel Plate Thickness(mm) | 8 | 10 | 12 | 14 | 14 | 16 | 16 |
| Total Vehicle Weight(t) | 4.3 | 5.3 | 6.6 | 7.9 | 8.8 | 10 | 10.5 |
| Overall Dimensions (mm) | 3000×2000 | 3600×2000 | 4000×2200 | 4500×2200 | 5000×2200 | 5500×2300 | 6000×2300 |
| overall height(mm) | 450 | 530 | 600 | 600 | 650 | 700 | 700 |
| Wheelbase(mm) | 2500 | 3100 | 3400 | 3900 | 4300 | 4800 | 5200 |
| motor power(kW) | 3.5 | 5 | 6 | 7 | 10 | 12 | 15 |
| Wheel Diameter(mm) | Φ300(4pcs) | Φ350(4pcs) | Φ400(4pcs) | Φ400(6pcs) | Φ500(6pcs) | ||
| travel speed(m/min) | 0~15 | 0~12 | |||||
| Turning Radius(mm) | 2501 | 3101 | 3401 | 3901 | 4301 | 4801 | 5201 |
| Floor Requirement Concrete Floor Steel Plate | |||||||
| Braking Method | Electromagnetic Brake | ||||||
| Operation Mode | Wired + Wireless remote control | ||||||
| Battery Model | D-250×24pcs | D-330×24pcs | D-400×24pcs | D-440×24pcs | D-250×36pcs | D-330×36pcs | D-440×36pcs |
| Charger Installation | On-Board Type | Split Type | |||||
| Safety Protection Radar Ranging Anti-Collision (3~0.3m Auto-Stop) + Audible and Visual Alarm + Electromagnetic Brake | |||||||
| Battery Maintenance | Maintenance-Free Battery | ||||||
| Body Color | Yellow + Warning Signs | ||||||
The table above lists the technical specifications for all 7 models in the KPXW series of trackless electric flat cars, covering KPXW-5 through KPXW-50. All models feature a mechanical steering mechanism, enabling 360° in-place rotation and continuous turning while driving. Ground clearance is 50mm, the steering mechanism is mechanical, and the wheels are made of ZG55 cast steel with polyurethane coating. For high-resolution technical specifications, please contact our customer service team.
Application Scenarios
The KPXW trackless electric flat car is widely used in:
Inter-workshop cross-transfer: Material transport between multiple workshops without the need for rail installation, offering maximum flexibility.
Heavy component handling: Short-distance transport of heavy goods such as molds, castings, and steel coils.
Assembly lines: Automated material delivery between workstations, either integrated with AGV systems or operated manually.
Warehouse stacking: Free movement on warehouse floors, working in tandem with forklifts for loading and unloading.
Docks and ports: Short-distance cargo transfer with no site restrictions thanks to trackless operation.
Automated production lines: Can be equipped with PLC for fully automatic operation and integration into smart manufacturing systems.
Selection Guide
KPXW-5~10t: Ideal for light-to-medium component transport within workshops. Compact design with agile turning. Reference price: RMB 50,000–100,000.
KPXW-15~20t: The mid-range workhorse, suited for mold and heavy component transport. Reference price: RMB 100,000–180,000.
KPXW-30~40t: Heavy-duty cross-transfer with reinforced chassis, designed for the steel and shipbuilding industries. Reference price: RMB 180,000–300,000.
KPXW-50t: The largest model, built for large castings, forgings, and steel coil transport. Reference price: RMB 300,000–450,000.
KPXW vs. KPD vs. KPX
KPXW (this model): Trackless electric flat car powered by batteries. No rail required — free 360° movement. Ideal for flexible cross-workshop and multi-station transport.
KPD: Low-voltage rail-powered electric flat car. Requires rail installation and is powered through the rail. Best suited for fixed-route, high-frequency transport.
KPX: Battery-powered rail-guided electric flat car. Battery-powered but travels on rails, combining the benefits of battery supply with rail guidance.
Selection advice: Choose KPXW (trackless) for flexible cross-workshop transport, KPD (rail-powered) for fixed-route high-frequency operations, and KPX when rails exist but short off-rail movement is occasionally needed.
Operating Instructions
Pre-operation checks: Verify battery charge level, tire pressure, tightness of all fasteners, and proper functioning of safety devices.
Start-up and driving: Use the wired pendant or wireless remote control to operate forward, reverse, and steering. Maintain low speed when turning.
Charging: Use the fully automatic smart charger. The battery is maintenance-free — recharge promptly when the charge drops below 20%.
Safe operation: No personnel are allowed in front of the car while it is moving. The radar anti-collision system automatically stops the car when obstacles are detected.
Maintenance: Periodically inspect the gear motor lubricating oil, wheel wear, battery connection cables, and bearing lubrication.
Why Choose Kelude Heavy Industry
Trackless Freedom, Flexible Efficiency: The KPXW trackless electric flat car breaks free from rail constraints with 360° in-place rotation — cross-workshop transport without any infrastructure investment.
Safety and Intelligence: Triple protection with radar ranging anti-collision, audible and visual alarm, and electromagnetic braking. Optional PLC fully automatic control balances safety with productivity.
Turnkey Service: Full life-cycle support from design & manufacturing to after-sales maintenance, with immediate phone response.
Service & Support
Kelude Heavy Industry provides full life-cycle service for the KPXW trackless electric flat car. For technical specifications of additional models and quotation estimates, please call 13903802779 or contact our online customer service — we respond within 24 hours.
FAQ
Q: What is the difference between the KPXW trackless flat car and the KPD rail-powered flat car?
A: The KPXW trackless flat car is battery-powered and requires no rails, allowing free movement with 360° in-place rotation. The KPD low-voltage rail flat car requires rail installation and draws power from the rail. The KPXW is ideal for flexible cross-workshop transport, while the KPD suits fixed-route, high-frequency operations. Trackless cars have lower infrastructure costs but a higher unit price than rail-powered cars.
Q: What are the floor requirements for the KPXW trackless electric flat car?
A: Models from 5t to 30t are suitable for concrete floors; 40t and 50t models require steel plate floors (higher load-bearing capacity). The floor must be level with a slope of ≤3°. Uneven surfaces can be compensated by the mechanical automatic leveling system.
Q: Which manufacturing standards does the KPXW trackless flat car comply with?
A: Design & Manufacturing complies with the industry standard JB/T 6127 "Electric Flat Car", the electrical system meets the requirements of GB/T 5226.1 "Mechanical Electrical Safety", the battery complies with GB/T 7403.1, and the safety devices comply with TSG Q7014 regulations.
Q: How long does the KPXW trackless flat car battery last? How long does it take to fully charge?
A: The D-series traction battery provides 8–12 hours of continuous operation on a full charge (depending on load capacity and usage frequency), and the fully automatic smart charger takes approximately 6–8 hours for a full charge. The battery is maintenance-free with a service life of 2–3 years.
