NXG-4 Rail Grinder

NXG-4 Rail Grinder Introduction

Main Technical Parameters of NXG-4 Rail Grinder

AGICO supplies various models of railroad rail grinding machines, also known as rail grinders, it can be classified into internal combustion type and electric type by the power difference. NXG-4 rail grinder belongs to the internal combustion type, it is a small type rail grinding machine for rust removal works, it can be used with single machine for one rail grinding, or added with a conncection bar, you can group 2 NXG-4 rail grinders for rail grinding at both sides at the same time. Our rail grinding machines are suitable for all types of railroad tracks and has been exported to Asian areas, African countries and European countries.

Engine Model	GXV160
Rated Power	4.0 kW
Rated Speed	3600 r/min
Grinding Wheel Type	Steel Wire Brush
Grinding Wheel Speed	3600 r/min
Total Machine Weight	43 kg

NXG-4 Rail Grinder Details

Operation and Maintenance Tips for NXG-4 Rail Grinder

5 Necessary Safety Measures Before Operation

1. 1. Add gasoline and engine oil according to the engine manual. The oil level must be appropriate; excessive or insufficient oil may cause starting difficulties or engine seizure.
2. 2. The Grinder for Rust Removal shall be operated by one person only.
3. 3. Operators must wear appropriate personal protective equipment, such as safety goggles and gloves.
4. 4. If grinding sparks may fall on or near flammable materials, protective measures must be taken in advance.
5. 5. Turning the feed handwheel clockwise lowers the steel wire brush or grinding wheel; turning it counterclockwise raises it.

6 Tips for Prevention of Operational Accidents

1. 1. The engine must be stopped before replacing the steel wire brush or grinding wheel.
2. 2. Damaged steel wire brushes or grinding wheels must not be used.
3. 3. After replacement, perform no-load test running for at least 30 seconds. During testing, other personnel must stay away from the operation area.
4. 4. Regularly measure grinding wheel wear and check whether the steel wire brush and fastening nuts are loose.
5. 5. The safety protective cover must be firmly installed at all times.
6. 6. Steel wire brushes and grinding wheels shall be stored in a dry environment.

Operating NXG-4 Rail Grinder Step by Step

1. 1. Place the rail grinder onto the rail and move it along the rail using the traveling wheels.
2. 2. Start the engine:
   • Pull the throttle lever fully downward to open the choke (starting position);
   • After the engine starts, lift the throttle lever slightly upward to reach full-speed operation;
   • Lifting the lever further upward reduces engine speed;
   • The topmost position of the lever is the engine stop position.
3. 3. During grinding, rotate the feed handwheel to adjust the feed rate according to actual conditions. The feed rate must not be excessive. Hold the handle firmly and push the machine forward slowly to complete the grinding operation.
4. 4. After rail grinding is completed, rotate the feed handwheel counterclockwise to lift the grinding wheel, then move the throttle lever upward to stop the engine.
5. 5. Bearings of the main shaft and traveling wheels shall be lubricated with grease regularly.

Troubleshooting Info

Fault	Possible Cause	Corrective Action
Engine fails to start	No fuel or insufficient engine oil	Refill gasoline and engine oil to proper levels
Engine runs but grinding wheel does not rotate	Synchronous belt loose or damaged	Adjust belt tension or replace belt
Abnormal vibration during operation	Grinding wheel or steel wire brush damaged or improperly installed	Stop the machine and replace or reinstall the grinding wheel
Poor rust removal performance	Insufficient feed or excessive wheel wear	Adjust feed handwheel or replace grinding wheel
Grinding wheel overheating	Excessive feed rate	Reduce feed rate and operate smoothly

Precautions