RailMac 20T Trolley Locomotive
The 20T Trolley Locomotive is a heavy – duty solution for industrial rail transport. Its frame, made of welded steel, is suspended by leaf springs or rubber studs on grease – bearing seats with tapered roller bearings. It features a high – reliability electronic speed controller. AC converters transform the DC from the trolley line into AC, precisely adjusting the speed of 3 – phase brushless AC motors, which range from 65 kW×2 to 110 kW×2. With pneumatic brakes, a sanding system, and spring – buffered bumpers, it ensures safety and stability. Capable of supporting track gauges of 600, 762, or 900mm, and with a maximum traction of up to 52.9 kN, it is well – suited for shunting and short – distance freight tasks in coal, metallurgy, and other industrial sectors, delivering reliable and efficient performance.
The company provides customers with comprehensive life cycle services, from design to power system supply, installation and commissioning, to after-sales service, training, and spare parts supply, as well as troubleshooting and overhaul technical support. This full range of services ensures that customer equipment maintains high reliability and long-term operating efficiency during use.
We provide full life cycle services for all customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from troubleshooting to overhaul technical support.
Advantages of 20T Trolley Locomotive
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Engineered with dual high-torque motors (65–110kW) and 550V/750V voltage systems, this locomotive delivers industry-leading traction up to 52.9 kN at speeds of 10.5–18.6 km/h, enabling efficient transport of ultra-heavy loads in mining and industrial applications.
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Features maintenance-free 3-phase AC motors (eliminating carbon brushes/quick-wear parts) with IGBT or frequency-converter speed control, reducing operational costs by 40% while enabling seamless stepless acceleration and regenerative braking capabilities.
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Constructed with a welded steel frame, tapered roller bearings, and leaf spring/rubber suspension to withstand 20-ton loads, while dual spring-buffered motor mounts and shock absorbers ensure component protection in high-impact environments.
Technical Specifications
| Train Model： |
20T Trolley Locomotive |
| Adhesive Weight: | 20 tons |
| Track Gauge: | 600,762,900 mm |
| Hourly System Traction: | 37.3~41.04 kN |
| Max. Traction: | 49~52.9 kN |
| Hourly System Speed: | 10.5~18.6 km/h |
| Supply Voltage: | 550~750 V |
| Power of Electric Motor: | 65 kW*2 or 75 kw*2 or 78 kw*2 or 85 kw*2 or 110 kw*2 |
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Train Model |
Adhesive Weight |
Track Gauge |
Hourly System Traction |
Max. Traction |
Hourly System Speed |
Supply Voltage |
Power of Electric Motor |
| 1.5T Trolley Locomotive | 1.5 tons | 600,762,900mm | 2.55~3.24kN | 3.68kN | 4.45~6.6km/h | 100~250V | 3.5kW*1 or 6.5kw*1 |
| 3T Trolley Locomotive | 3 tons | 600,762,900mm | 7.5~10.6kN | 7.36kN | 7.5~10.6km/h | 250~550V | 12kw*1 or 24kw*1 or 6.5kw*2 |
| 7T Trolley Locomotive | 7 tons | 600,762,900mm | 13.05~15.16kN | 17.2~18.2kN | 9.8~11km/h | 250~550V | 21kW*2 or 22kw*2 or 24kw*2 |
| 10T Trolley Locomotive | 10 tons | 600,762,900mm | 13.05~19.13kN | 24.5~26kN | 9.8~11km/h | 250~550V | 21kW*2 or 22kw*2 or 24kw*2 or 30kw*2 |
| 14T Trolley Locomotive | 14 tons | 600,762,900mm | 26.68~27.16kN | 34.3~36.4kN | 11.2~12.87km/h | 250~550V | 45kW*2 or 52kw*2 |
| 20T Trolley Locomotive | 20 tons | 600,762,900mm | 37.3~41.04kN | 49~52.9kN | 10.5~18.6km/h | 550~750V | 65kW*2 or 75kw*2 or 78kw*2 or 85kw*2 or 110kw*2 |
| 30T Trolley Locomotive | 30 tons | 762,900mm | 43~60kN | 72~78kN | 12.73~13.2km/h | 550V | 85kW*2 or 110kw*2 |
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General Information of RailMac 20T Trolley Locomotive |
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| Model Name | 20T Trolley Locomotive | Adhesive Weight | 20 tons |
| Track Gauge | 600, 762 or 900 mm | Hourly System Traction | 39.23, 37.3 or 40.6, 41.04 or 39.2 kN |
| Max. Traction | 49 or 52 or 52.9 kN | Hourly System Speed | 15, 14.4 or 10.5, 12.5 or 18.6 km/h |
| Min. Turning Radius | 12, 25 or30 m | Voltage | 550 or 750 V |
| Power of Electric Motor | 85 kW*2, 78 kW*2 or 65 kW*2, 75 kW*2 or 110 kW*2 | Length | 7100 or 7400 / 7500 mm |
| Width | 1600 or 1750 / 2300 mm | Height | 1900 or 3340 mm |
| Wheelbase | 2200 or 2500 / 3000 mm | Wheel Diameter | Φ840 mm |
| Height of Pantograph | 2000~3200 or 4050~4500 mm | Height of Traction | 320/430 or 430 mm |
| Speed Regulating Mode | Resistance or IGBT, AC Converter | Braking Mode | Mechanical, Electric and Air Brake |
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Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.
Engine Sale Manual
Installation Drawing
Installation Manual
Operation Manual
Parts Catalogue
