USED ​​JUNKER EXTERNAL GRINDING MACHINE

Description

Detailed Technical Data Sheet for Used CNC Grinding Machine - Brand Junker Model BUAJ 30 CNC

General Overview

The Junker BUAJ 30 CNC grinder is a high-precision machine tool designed for the external machining of mechanical components. Manufactured in 1995, this machine represents an excellent combination of robustness, precision, and automation. It is equipped with a Fanuc 0-GC control system, renowned for its reliability and versatility, making it an ideal choice for machine shops requiring precision grinding of cylindrical components.

Technical Specifications

Brand: Junker
Model: BUAJ 30 CNC
Year of Construction: 1995
Serial Number: 352
Control System: Fanuc 0-GC
Table Dimensions: 1380 x 160 mm
Grinding Wheel Dimensions: 400 x 63 x 127 mm
Machine Weight: 2800 kg
Power supply: 380 V three-phase
Spindle Speed: Variable, adjusted via CNC control to suit different materials and operations.
Race of the Aces:
- X-axis (diameter): Up to 300 mm
- Z-axis (length): Up to 1000 mm
Cooling System: Included, with closed circuit for water cooling of the grinding wheels and the workpiece, essential for maintaining precision during grinding operations.

Main Components

Grinding Wheel Spindle: The grinding wheel spindle is designed to accommodate large grinding wheels, up to 400 mm in diameter. It is powered by a powerful motor and regulated by the CNC system, ensuring high precision.
Worktable: The table has a surface area of 1380 x 160 mm, providing a large work area for grinding large workpieces. Table movement is controlled by the CNC system, allowing for precise and repeatable workpiece positioning.
Control System: The Fanuc 0-GC is a highly reliable CNC control system with a user-friendly interface that allows you to program complex grinding operations with high precision.
Cooling System: The machine is equipped with a water recirculation cooling system to prevent overheating during processing, thus maintaining the dimensional stability of the workpiece and extending the service life of the abrasive wheels.

Mechanical Features

Precision: The Junker BUAJ 30 CNC grinder is designed for high precision thanks to the Fanuc CNC system and linear guides on which the axes move. It can machine cylindrical parts with tight tolerances, ideal for high-precision components.
Rigidity and Stability: The machine's cast iron structure ensures high rigidity, minimizing vibrations during operation and ensuring an excellent surface finish.
Versatility: Capable of working a wide range of materials, including hardened steels, cast iron, and light alloys, thanks to the fine adjustment of the grinding wheel rotation speed and the adaptation of the grinding process via the CNC control.

Workable Materials

The machine is ideal for grinding:

High-strength steels
Alloy steels and stainless steels
Cast iron
Light alloys (aluminium and its alloys)
Hard materials such as cemented carbides

Maintenance

Cleaning and Lubrication: It is essential to keep the guides clean and lubricate the ball screws regularly to ensure smooth and precise movement of the axes.
Checking the Grinding Wheels: Grinding wheels must be checked regularly to avoid imbalances that could compromise the grinding quality. Periodic dressing of the grinding wheel is also recommended.
Cooling System: Check the level and quality of the coolant, replacing it according to the manufacturer's instructions to prevent overheating and premature wear of the grinding wheels.

Used Appraisal

To correctly evaluate the quality of a used grinder such as the Junker BUAJ 30 CNC, we recommend:

Check the Fanuc 0-GC control system: Make sure it is fully operational and up to date.
Inspect the condition of the guides and ball screws: These components should be in excellent condition, with no signs of wear or excessive play.
Test machine accuracy: Request an operational test to evaluate the machine's ability to maintain specified tolerances.
Cooling system condition: Check that there are no leaks and that the system is functioning properly.

Sectors of Use

The Junker BUAJ 30 CNC is mainly used in:

Automotive : For grinding components such as camshafts, crankshafts and other critical parts.
Aerospace Industry : For the production of components requiring high precision and quality surface finishes.
Toolmaking : In the production of cutting tools and machine parts that require very close tolerances.
General mechanical engineering : For the machining of cylindrical parts and precision mechanical components.

Why is it better to buy it used?

Purchasing a used grinder like the Junker BUAJ 30 CNC can be extremely advantageous, especially considering the high cost of new machines in this category. The solid construction and quality of the components ensure a long service life, even for used machines. Furthermore, the Fanuc control system is widely used and easy to maintain, reducing long-term operating costs.

Conclusion

The Junker BUAJ 30 CNC is a high-precision external grinder, ideal for companies requiring a reliable and versatile machine for machining mechanical components. Even in its used condition, if properly maintained, this machine can offer excellent performance, representing a smart investment for those seeking quality at an affordable price.

FOR SALE USED GRINDING MACHINE. CNC EXTERNAL GRINDING MACHINE BRAND JUNKER MODEL BUAJ 30 CNC YEAR OF CONSTRUCTION 1995 SERIAL NUMBER 352 CONTROL SYSTEM FANUC 0-GC. TABLE 1380X160 GRINDING WHEEL DIMENSIONS 400X63X127MM MACHINE WEIGHT 2800KG.