Milling machine operation skills and precautions

Milling machines（motor grader caterpillar) are key equipment used in road construction for milling and removing old road surfaces (such as asphalt and concrete). Their operation requires professional skills and strict safety awareness.

Las fresadoras son equipos clave que se utilizan en la construcción de carreteras para fresar y eliminar superficies de carreteras viejas (como asfalto y hormigón). Su manejo requiere habilidades profesionales y un estricto conocimiento de seguridad.

The following are the operating tips and precautions of the milling machine:
1. Preparation before operation**/Preparación antes de la operación**
(1). **Equipment inspection**/**Inspección del equipo**
- The milling drum operating handle should be in the neutral position
-The hydraulic cylinder operating handle and conveyor belt switch should be in the neutral position.
-The milling drum safety cover should be well installed, complete and effective.
- Check whether the fuel, hydraulic oil and coolant are sufficient and ensure there are no leaks.
- Check the integrity and wear of the cutter (milling teeth), and replace damaged or blunt cutters in time.
- Check that the transmission system, belts, chains and other components are not loose or abnormal.
- Test whether the instrument panel, lights and alarm devices are working properly.
(2) **Working Condition Assessment**/**Evaluación de las condiciones de trabajo**
- Survey the work area and mark obstacles such as underground pipelines and manhole covers to avoid accidental injuries.
- Adjust the milling depth according to the road material (asphalt/concrete) and thickness (usually no more than 2/3 of the tool length).
- Clear away road debris (such as stones, metal fragments) to prevent tool damage.
(3) **Safety protection**/**Protección de seguridad**
- Operators are required to wear safety helmets, reflective vests, non-slip shoes, goggles and earplugs.
- Set up warning signs and fences to ensure that there are no unauthorized persons in the work area.

2. Operation skills**/Habilidades operativas**
(1). **Startup and preheating**/**Arranque y precalentamiento**
- After starting the engine, run it at idle speed for 3-5 minutes, and then start working after the hydraulic oil temperature rises to the normal range (about 40°C).
Before milling operation, when engaging the milling gear, it should be quickly pushed up when the engine is idling, and slowly moved in slow gear or slowly lowered to the milling depth when parking. During the milling process, it can only move forward in low gear. Milling operation can only be carried out when the engine is at maximum throttle.
(2). **Control the milling depth**/**Controlar la profundidad de fresado**
The asphalt pavement that needs to be milled must be free of metal or cement. During operation, pay attention to whether all indicator lights and instruments are normal at any time.
- **Shallow milling** (0-5cm): used for roughening the road surface or treating minor damages, maintaining a constant speed.
- **Deep milling** (more than 5cm): Milling in layers to avoid over-depth milling at a single time, which may cause equipment overload or tool breakage.
(3). **Travel speed matches rotor speed**/**La velocidad de desplazamiento coincide con la velocidad del rotor**
- Adjust the walking speed according to the hardness and depth of the material. On hard surfaces, the speed needs to be reduced (usually 1-5 m/min).
- Keep the rotor speed stable (about 200-300 rpm for asphalt pavement, and lower for concrete).
It is strictly forbidden to change gears during driving operation. The machine must be stopped when changing gears, and the speed control handle cannot be placed in the center position. When the milling machine is operating, the operator is strictly prohibited from leaving the post without permission, otherwise the milling drum must be lifted. If an emergency requires stopping, the emergency stop button can be used. The ignition switch should be used for normal shutdown.
(4). **Milling direction and flatness**/**Dirección de fresado y planitud**
- Work in a straight line, avoid sharp turns or snaking, and ensure a smooth milling surface.
- The overlap width of the milling is about 10-15cm to prevent missed milling or step marks.
(5). **Closing Process**/**Proceso de cierre**
- Raise the rotor slowly at the end of milling to avoid mechanical shock caused by sudden stop.
- Clean up waste materials promptly to prevent accumulation that may affect equipment heat dissipation or secondary construction.
3. Safety precautions**/Precauciones de seguridad**
(1) **Personnel safety**/**Seguridad del personal**
-Operators should be trained and qualified before taking up their posts.
- Operators should follow the instructions for use.
- It is strictly forbidden to get close to the milling rotor area when the equipment is running to prevent splashing objects from injuring people.
- When the equipment is moved, there must be someone to direct it and pay attention to blind spots (which can be assisted by cameras or observers).
(2) **Equipment protection**/**Protección del equipo**
- If you encounter abnormal vibration, abnormal noise or high temperature during the milling process, stop the machine immediately and check.
- Avoid contact between the cutter and hard objects such as steel bars and manhole covers to prevent tooth breakage or rotor deformation.

(3) **Environmental risks**/**Riesgos ambientales**
- When working on rainy days or wet roads, the machine must be non-slip and the electrical system must be waterproof.
- When the milling dust is large, turn on the water spray dust reduction device to reduce environmental pollution.
4. Maintenance**/Mantenimiento**
(1). **Daily maintenance**/ **Mantenimiento diario**
- Clean the rotor, belt and radiator of residual materials after operation to prevent blockage.
- Check the tool wear and replace the new cutter head according to the "symmetrical replacement" principle to keep the rotor balanced.
-After the operation is completed, the milling machine should be parked in a flat and safe place, the milling gear should be disengaged, and the engine should be stopped.
-After operation, the safety cover of the milling machine should be opened for cleaning and maintenance.
(2). **Regular maintenance**/**Mantenimiento regular**
- Replace the oil filter every 50 hours and check the cleanliness of the hydraulic oil every 100 hours.
- Add grease to bearings, chains and other parts every quarter to prevent rust.
(3). **Long-term parking**/**Parking de larga duración**
- Empty the fuel tank, disconnect the batteries, and cover the equipment from the sun and rain.
5. Common Problem Solving**
- **Frequent tool damage**: Check if there are any hidden hard objects on the road surface, adjust the milling depth or reduce the speed.
- **Uneven milling surface**: Calibrate the rotor level and check whether the hydraulic system pressure is stable.
- **Equipment deviation**: Check whether the tire pressure is consistent, or adjust the track tension.

grader machine price/motor graders for sale/used motor graders for sale/caterpillar grader/second hand graders for sale
**Summarize**:
Milling machine operation needs to take into account both efficiency and safety. Mastering parameter adjustment and emergency handling capabilities is the key. Regular training and standardized operating procedures can significantly reduce the risk of accidents and extend the life of the equipment.

El funcionamiento de la fresadora debe tener en cuenta tanto la eficiencia como la seguridad, siendo clave la competencia en el ajuste de parámetros y en la capacidad de manejo de emergencias. La capacitación regular y los procedimientos operativos estandarizados pueden reducir significativamente el riesgo de accidentes y prolongar la vida útil del equipo.

After understanding the operation skills and precautions of Milling machine, do you have a further understanding of your own Milling machine? Friends who are interested in purchasing can take a look at our related products.

Click here to visit our web.

You can also contact us directly and we will provide you with the most suitable products according to your needs.