GM-4II electric rail grinder machine is mainly used for the restoration and grinding operations of welding joints, rolling burrs, rail surface repair, waveform wear, etc. during railway rail maintenance and construction.

The rail grinder machine has undergone significant improvements in structural layout, transmission mode, control mode, and other aspects. Not only has the technical performance of profiling accuracy and polishing efficiency been greatly improved, but also the intelligent control of grinding wheel feed has been achieved due to the development and application of CNC feed units.

The rail grinder machine greatly simplifies construction operations, measurements, and other operational steps. It avoids the problem of 'over-polishing' during construction. With a further optimised structural design and user-friendly layout of operational components, construction operations are now easier, simpler, faster, and more efficient.

Main Technical Parameters

Supporting power	Three phase AC motor (4kw/2900rpm)
Microcontroller operating speed	16 MIPS
LCD display resolution	128 × 64 DOTS
Timer real-time display resolution	hours, minutes, seconds
Timer cumulative display resolution	hours
Timer output resolution	year, month, day, hour, minute
External charging power supply	~ 220 V
Wheel travel	59 mm
Imitation track width	1010 mm
Imitation deflection angle	± 90 °
Grinding wheel jog feed accuracy	0.01~0.5 mm (real-time setting)
Working environment temperature	- 40 ℃~+70 ℃
Overall dimensions of the host (length x width x height)	1565 x 590 x 973 (mm)
Weight	115 kg

Machine Structure

The rail grinder machine designed with control panel, easy to see its grinding angle and time.

If want make it with a lower weight can change a lower power motor. It is popular with its convenient operation.

Lubrication And Maintenance Of The Equipment

1. After the construction of each shift, clean the exposed linkage guide bar and transmission chain of the yaw manoeuvring mechanism; the transmission screw and transmission chain of the transverse moving mechanism and other components, and add mechanical lubricant to their sliding surfaces.

2. Every 20 hours of operation of the equipment to the external lubricant cups filled with grease not less than once.

Application

1. Grinding of rail heads
The rail grinder machine is used for grinding the surface of the rail head of ordinary line rails, repairing wear, scratches, crushes and other damages, restoring the rail profile, reducing train impact and vibration, and improving the smoothness of train operation.

2. Welding and joint grinding
It is suitable for fine grinding of rail welded joints and ordinary joints, eliminating defects such as unevenness and saddle-shaped wear of welds, reducing wheel-rail impact noise, and extending the service life of rails.

3. Rail defect repair
It can precisely grind local damages such as cracks, chipping and depressions on the surface of rails, prevent defect expansion and ensure train operation safety.

4. Maintenance of urban rail transit
It is applicable to maintenance operations of urban rail transit such as subways, light rails and trams, especially suitable for enclosed or underground space operations. It is pollution-free, low-noise and meets environmental protection requirements.

5. Emergency repair operations
Lightweight and flexible, the machine can get on and off the track quickly, making it suitable for emergency repair tasks within the window period or temporarily, and improving the efficiency of emergency maintenance.