Technical Data Sheet of the "Jung" Grinding Machine Model HF 50

Brand : Jung
Model : HF 50
Year of construction : 1979
Mass : 1500 kg
Magnetic chuck dimensions : 600 x 200 mm
Axis travel :

• Longitudinal : 500 mm
• Transversal : 200 mm
• Vertical : 350 mm
  Installed power : 3.7 kW
  Spindle speed : Up to 2800 RPM (Adjustable)
  Machining precision : ±0.002 mm
  Cooling system : Integrated, with tank and pump for coolant
  Control type : Manual with some assisted controls

Technical Description

What is the "Jung" Grinding Machine Model HF 50?

The Jung HF 50 grinding machine is designed for finishing metal surfaces by removing material very precisely. This machine is particularly used to obtain perfectly flat and smooth surfaces, with very tight tolerances. It is used above all in industrial environments, mechanical workshops and precision departments for machining on components that require high dimensional accuracy and surface finish.

What is it for?

HF 50 grinding is used to finish hard metal surfaces, such as those of tools, molds and mechanical components. It is used to remove small quantities of material, leveling and polishing the surface of the machined piece. This machine is essential for ensuring that components have flat surfaces and high surface quality, reducing imperfections and improving dimensional accuracy.

How is it used?

1. Preparing the Machine:

   • Turn on the machine and check that the cooling system is working and the coolant level is adequate.
   • Mount the workpiece on the magnetic chuck and activate the magnet to fix it firmly.

2. Stroke Adjustment:

   • Set the longitudinal, transversal and vertical stroke based on the size of the piece and the type of machining required.
   • Adjust the spindle speed according to the material and the grinding wheel used.

3. Correction:

   • Start the spindle and begin grinding with light, progressive passes to remove material in a controlled manner.
   • Use coolant to prevent overheating of the workpiece and grinding wheel, keeping the processing temperature constant.

4. Control and Finishing:

   • Continuously monitor the quality of the ground surface, using measuring instruments such as dial gauge to ensure accuracy.
   • Once the work is completed, turn off the machine and remove the piece carefully.

Materials Used

Jung HF 50 grinding is mainly used to work on:

• Hardened Steels : Often used in tools and molds, these materials require precise grinding to maintain their mechanical properties.
• Stainless Steels : Require a high surface finish for applications requiring resistance to corrosion and wear.
• Carbide Alloys : Used in industries such as aerospace and automotive for high performance components.

Types of Grinding Machines

• Flat grinders : Designed to obtain perfectly flat surfaces, as in the case of the Jung HF 50.
• Cylindrical Grinding Machines : Used to machine external or internal cylindrical surfaces.
• Tool Grinding Machines : Specialized in the sharpening and grinding of cutting tools.
• Numerical Control Grinding Machines (CNC) : They offer maximum precision and automation, ideal for mass production.

Maintenance

1. Cleaning:

   • Clean the machine regularly, removing accumulated grinding dust and chips.
   • Check and replace the coolant periodically to avoid the accumulation of contaminants.

2. Lubrication:

   • Follow a lubrication program for guides, bearings and moving parts, using appropriate lubricants as indicated in the manual.

3. Wheel control:

   • Check the state of wear of the grinding wheel and replace it if necessary to maintain constant processing quality.
   • Balance the grinding wheel after each replacement to avoid vibrations that could compromise precision.

4. Security Verification:

   • Make sure all guards are in good condition and that safety devices, such as emergency stop buttons, work properly.

Why It Is Worth Buying a Used "Jung" HF 50 Grinding Machine

1. Reduced Costs : Purchasing a used grinding machine like the Jung HF 50 represents an opportunity for significant savings compared to purchasing a new machine, without compromising performance.

2. Brand Reliability : Jung is a brand recognized for the quality and durability of its machines, which, if well maintained, can operate effectively for decades.

3. Precision and Robustness : Although dated, the HF 50 still offers high machining precision, thanks to the solidity of the construction and the quality of the materials used.

4. Availability of Spare Parts : Despite its age, it is possible to find spare parts and assistance for this machine, thanks to the reputation and diffusion of the Jung brand.

5. Resale Value : Branded grinding machines, such as the Jung HF 50, maintain a good resale value, making them a safe investment even in the long term.

This guide will provide you with all the information you need to make the most of the Jung HF 50 grinding, ensuring precise processing and a long life of the machine.