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Main Technical Parameters1.Petrol Engine Model： Honda GX200 Speed: ≥3600r/minPower: 4.8kW2. Grinding wheel size: φ125×65×M20 Linear speed: ≥35m/s3. Main shaft speed: 4500r/min4. Tilt angle of grinding wheel: ±90°5. Tilt angle accuracy: 0.5°,1.0°,2.0°, 3.0°,4.0°,5.0° 6....
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Main Technical Parameters1.Petrol Engine Model： Honda GX200 Speed: ≥3600r/minPower: 4.8kW2. Grinding wheel size: φ125×65×M20 Linear speed: ≥35m/s3. Main shaft speed: 4500r/min4. Tilt angle of grinding wheel: ±90°5. Tilt angle accuracy: 0.5°,1.0°,2.0°, 3.0°,4.0°,5.0° 6.Grinding wheel stroke: 45 mm7.Grinding wheel feeding accuracy: 0.01mm,0.1mm,0.15mm,0.2mm,0.25mm,0.3mm8.Distance between two profiling wheels: 1000mm9.Machine weight: 98kg10.Dimension: 1700×590×750mm
NGM-4.8 rail grinding machine (Rail Grinder) suitable to 43kg/m-75kg/m rail track welding, uneven connect, rail track fat edge, track end-face welding and repair etc .It has High work efficiency, good quality of grinding, the advantages of simple operation, convenient for move on the track and move out, which is necessary tool for railway project overhaul and emergency maintenance.
1. The machine adopts a MCU controller, which is simple to operate, digital display of feed rate and rotation angle. It has the characteristics of precise control and high grinding accuracy.2. The feed device of the machine is driven by stepping motor. It has the characteristics of digital display of feed, precise control, adjustable feed accuracy and high grinding accuracy.3. The angle control device of the machine is driven by stepping motor. It can adjust rotation precision and digital display rotation angle. It changes the previous manual rotation mode, reduces the labor intensity of workers, and improves the operation efficiency and standardized grinding.4. The whole power supply adopts lifelong maintenance-free power supply, which has the characteristics of lifelong maintenance-free. It has the characteristics of fast charging speed, high discharge capacity of large current, high efficiency of energy conversion, low loss of process, high power density, good ultra-low temperature, long cycle life and no charging memory effect etc.5. The machine has one key reset function. After grinding operation, the feeding device and rotating beams are reset to the initial state. The operation is simple and high efficiency.6. The machine can grind both sides of the rail with 90°, and the inclination angle of the grinding operation is large.7. This machine can do grinding operation in high precision and high efficiency. It has the advantages of good grinding quality, easy operation, and convenient access and so on. It is a necessary tool for railway overhaul, maintenance and emergency repair.
Specification
| item | value |
| Type | rail pad |
| Material | steel |
| Dimensions (L x W x H) (mm) | 1700 * 590 * 750mm |
| Place of Origin | China |
| Liaoning | |
| Brand Name | Tiegong |
| Warranty Period | 1 year |
| power | 4.8kw |
| speed | 4500 r/ min |
| Weight | 98kg |
| Grinding wheel specifications | φ125×65×M20 |
| Type | rail pad |
|---|---|
| Material | steel |
| Dimensions (L x W x H) (mm) | 1700 * 590 * 750mm |
| Place of Origin | China |
| Brand Name | Tiegong |
| Warranty Period | 1 year |
| power | 4.8kw |
| speed | 4500 r/ min |
| Weight | 98kg |
| Grinding wheel specifications | φ125×65×M20 |
| Main Technical Parameters1.Petrol Engine Model： Honda GX200 Speed | ≥3600r/minPower: 4.8kW2. Grinding wheel size: φ125×65×M20 Linear speed: ≥35m/s3. Main shaft speed: 4500r/min4. Tilt angle of grinding wheel: ±90°5. Tilt angle accuracy: 0.5°,1.0°,2.0°, 3.0°,4.0°,5.0° 6.Grinding wheel stroke: 45 mm7.Grinding wheel feeding accuracy: 0.01mm,0.1mm,0.15mm,0.2mm,0.25mm,0.3mm8.Distance between two profiling wheels: 1000mm9.Machine weight: 98kg10.Dimension: 1700×590×750mm |
The NGM-4.8 is a rail profile grinding machine designed for finishing and repairing welded rail joints, correcting uneven rail connections, removing fat edges, dressing track end-faces and other maintenance tasks on 43kg/m–75kg/m rail sections during overhaul and emergency repairs.
The machine is powered by a Honda GX200 petrol engine rated at 4.8 kW with an engine speed ≥3600 r/min. Fuel: regular gasoline appropriate for the Honda GX200 (follow the engine manufacturer's fuel recommendations).
Standard grinding wheel size is φ125×65×M20. Main shaft speed is 4500 r/min and the grinding wheel linear peripheral speed is ≥35 m/s. Grinding wheel stroke is 45 mm.
It is suitable for common heavy rails in the 43 kg/m to 75 kg/m range, covering typical rails used in mainline and industrial track welding and repair.
The grinding wheel tilt range is ±90°. Angle control is digital and driven by a stepping motor; available angle accuracy options include 0.5°, 1.0°, 2.0°, 3.0°, 4.0° and 5.0°.
The feed device is driven by a stepping motor with digital display. Feed accuracy options include 0.01 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm and 0.3 mm, allowing precise and repeatable material removal.
The machine uses an MCU controller that digitally displays feed rate and rotation angle. It also provides precise control of feed and angle, and includes a one‑key reset function to return feed and rotation to the initial state after grinding.
Control electronics are powered by a lifelong maintenance‑free power source (battery pack) described as having fast charging, high discharge current capacity, high energy conversion efficiency, low loss, good low-temperature performance and long cycle life. For battery specifications and charging procedure, consult the manufacturer.
Machine dimensions: 1700 × 590 × 750 mm; weight: 98 kg. It is designed for convenient movement on tracks and for quick deployment and removal. Due to its weight, use appropriate lifting/handling equipment or two trained operators for transport.
Inspect the grinding wheel before each shift for cracks, excessive wear or imbalance. Replace immediately if damaged. Replacement frequency depends on workload and material removed; keep spare wheels (φ125×65×M20) on hand. Follow wheel manufacturer safety and dressing guidelines.
Daily: check grinding wheel condition, fasteners, steering/profiling wheels and battery charge. Follow Honda GX200 engine maintenance (oil, air filter, spark plug) per engine manual. Periodically check stepping motors, electrical connections, and the MCU controller. Lubricate moving parts as recommended by the supplier.
Wear appropriate PPE (safety glasses/face shield, hearing protection, gloves and protective clothing). Ensure secure machine mounting on the rail, clear the work area of personnel, be aware of sparks and hot swarf, ventilate to avoid exhaust build-up, and use the emergency stop if abnormal operation occurs. Follow local railway safety and lockout/tagout rules.
Yes. The NGM-4.8 can grind both sides of the rail at 90° and supports large inclination angles enabled by its ±90° tilt range and digitally controlled angle adjustment.
The machine carries a 1-year warranty. For spare parts, service, calibration, or training, contact the manufacturer or authorized dealer. Keep purchase documentation and serial numbers handy when requesting support.
Contact the manufacturer or your local dealer to place an order, request a quotation, arrange delivery or schedule operator training. Ask the supplier about on-site commissioning, training options, spare parts kits and any available compliance or certification documentation.
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