If you are looking for a , reliable and excellent performing universal grinding machine Grisetti RT-A represents an excellent choice. This machine, well maintained and used mainly for occasional repairs, still offers its full potential today, making it a real bargain for those who want quality grinding at a low cost. The Grisetti , known for the precision of its machine tools, has designed this model for high-precision machining, both indoors and outdoors, making it extremely versatile.

Appearance and components

The Grisetti RT-A presents itself with a typical aesthetic of robust and well-built machine tools. The main frame is made of cast iron to reduce vibrations and increase stability during processing. The controls are ergonomically positioned for easy access, making it easy to control the various operating parameters. Even though it is a used machine, the Grisetti RT-A has been well maintained, and this is reflected in the overall appearance of the machine: smooth surfaces, working levers and knobs, and minimal visible signs of wear.

Dimensions and technical specifications

This universal grinder offers complete working capacity for both internal and external grinding . The dimensions of the work surface are generous, with a maximum grinding length of approximately 800 mm and a maximum grindable diameter of 300 mm . The workpiece head is tiltable and equipped with a quick locking system, while the tailstock ensures precise and stable positioning of the workpiece.

The power of the main motor is around 3 kW , sufficient to guarantee smooth and constant processing even on harder materials. The spindle speed is adjustable, with a range that can reach up to 3000 revolutions per minute (rpm) , allowing perfect adaptability to surface finishing needs.

Mechanical characteristics

The Grisetti RT-A is a precision grinder, perfect for high-quality work on mechanical parts requiring tight tolerances. The automatic advancement system of the carriage ensures uniform and precise movement along the X and Y axis, with a positioning accuracy of a few microns. Thanks to the ability to work both externally and internally , this machine can be used to grind shafts, bushings, bearings, gears and other mechanical components that require a perfect finish.

Usage procedure

The use of the Grisetti RT-A grinding is relatively simple and intuitive, but requires expertise in the field of precision grinding. After clamping the workpiece between the driving head and the tailstock, the operator can begin to adjust the spindle speed and cutting depth based on the type of material being machined and the desired finish. The automatic advancement system allows you to obtain extremely precise surfaces, reducing the need for manual intervention and the risk of errors.

Matching accessories

An advantage of the Grisetti RT-A is the possibility of equipping it with various accessories to expand its operational capabilities. Wheels of different sizes and materials can be combined , depending on the type of work to be carried out and the material to be ground. Furthermore, it is possible to equip the machine with thread grinding automatic measuring systems to ensure even greater precision during grinding operations.

Usage parameters and mathematical formulas

To get the best performance from the Grisetti RT-A , it is important to consider some parameters. The peripheral speed of the grinding wheel, for example, is calculated with the formula:

$$V$$

Where:

• V is the peripheral speed of the grinding wheel (m/min),
• D is the diameter of the grinding wheel (mm),
• n is the rotation speed of the grinding wheel (rpm).

Correctly setting these parameters based on the material to be processed and the type of finish required is essential to get the most out of the machine.

Workable materials

The Grisetti RT-A can grind a wide range of materials, including steel, cast iron, bronze and hard materials such as carbides and hardened steels. This versatility makes it suitable for a wide variety of applications, especially in mold making, machinery maintenance and mechanical component repair.

Maintenance

Correct maintenance is essential to prolong the operational life of the Grisetti RT-A . The machine requires regular cleaning of the contact surfaces and the work area, as well as periodic checks of the grinding wheels to check for any wear or damage. Lubrication systems must also be inspected regularly to ensure that all moving parts operate without excessive friction.

Safety and compliance with current regulations

The Grisetti RT-A , like many machine tools, may not comply with the most recent CE , especially if purchased used. However, it can easily be upgraded with the installation of appropriate protections, such as safety screens and emergency stop systems It is important to ensure that the machine is adequately protected to ensure the safety of operators.

How to evaluate if it is a good used one

Before purchasing a Grisetti RT-A , it is essential to check the general condition of the machine. Observing the wear of the moving parts, checking the precision of the movements and testing the spindle speed are all essential operations to ensure you get a good deal. Another indication of a well-maintained machine is the technical documentation and maintenance records that accompany the machine.

Sectors of use

The Grisetti RT-A is widely used in sectors such as:

• Precision mechanics,
• Mold construction,
• Mechanical repairs,
• Automotive.

Why is it worth buying a used Grisetti RT-A?

Opting for a used Grisetti RT-A represents an excellent opportunity for those looking for a quality machine without spending the price of a new one. This model, even if used, retains its value thanks to the construction solidity and precision it offers. Furthermore, with regular and careful maintenance, the Grisetti RT-A will continue to provide high performance for many years. Compared to purchasing a new machine, choosing a well-maintained used one allows you to save significantly without sacrificing quality.