Product Overview
The NGM-4.4Ⅱ portable rail grinder is a lightweight gasoline-powered rail maintenance machine. It is specially designed for grinding aluminum thermal weld seams, removing rail burrs and repairing worn rail surfaces.
The engine and frame can be rotated by 90 degrees, enabling flexible grinding on rail top and rail side. Constructed with high-quality welded steel frame, this machine only weighs 61kg, greatly reducing operator fatigue. It supports both rough grinding and precise rail profile finishing for railway track maintenance.
Key Features & Advantages
• Lightweight 61kg compact body, easy to move on and off rails
• 90° rotatable frame, flexible grinding for rail top and rail side
• Two-stroke gasoline power, suitable for field operation without external power supply
• High grinding precision, finish weld seam and rail surface defects
• Simple structure, convenient daily maintenance and low failure rate
Application Scenarios
• Aluminum thermal weld seam grinding & leveling
• Rail edge burr removal
• Repair worn rail surface defects
• Railway daily track maintenance and track reshaping
II. Principal Technical Parameters
| Model | NGM-4.4Ⅱ |
| Engine Type | Two-stroke gasoline engine M165 |
| Rated Power | 4.9 kW |
| Spindle Speed | 3800 r/min |
| Grinding Wheel Size | Φ150 × 70 × 55 mm |
| Grinding Stroke | 45 mm |
| Applicable Rail | 43–75 kg/m steel rail |
| Machine Weight | 61kg |
Equipment Maintenance
1. Engine: Mix gasoline and two-stroke engine oil at the ratio of 25:1, follow the engine manual for regular maintenance.
2. Grinding wheel replacement: Use M20 nut grinding wheel. Tighten the wheel manually before operation.
3. Lubrication & Cleaning: Clear dust and grinding debris every week. Lubricate hinge parts and oil nozzle regularly.
packing and shipping:
FAQ:
Q1: What is the weight of NGM-4.4Ⅱ portable rail grinder?
A: Only 61kg, lightweight design for easy on-rail operation.
Q2: Can it grind rail side and rail top?
A: Yes, the frame can rotate 90 degrees to grind rail top and rail side.
Q3: What fuel mix ratio does this machine use?
A: Mix gasoline and two-stroke engine oil at 25:1.
Q4: What is the warranty?
A: 12 months warranty, spare
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