Gressel JNF Keyway Milling Machine Data Sheet
General Description: The Gressel JNF keyway milling machine is a versatile and robust machine tool, primarily used for the precise machining of keyways and splines in various metal materials. It is particularly popular in industries such as mechanical manufacturing, precision engineering, and industrial maintenance.
Main Technical Features:
- Builder: Gressel
- Model: JNF
- Bench dimensions: 1000 x 270 mm
- X/Y/Z Axis Movement: 750/145/280 mm
- Spindle Rotation Speed: 180-2950 rpm
- Weight: Not specified (the machine structure suggests a significant weight, suitable for ensuring stability during processing)
- Control System: Manual or automated depending on the configuration
- Workable Materials: Steels, light alloys, ferrous and non-ferrous materials.
Main Components:
- Spindle: Capable of operating at variable speeds between 180 and 2950 rpm, allowing for both rough and fine work.
- Work Table: Generous dimensions for large pieces, with movements on the X, Y and Z axes sufficient for most typical machining operations.
- Feed System: The axes are manually controlled with the possibility of automation, ensuring precision and optimal control during the milling operation.
Optimal Usage Formulas:
- Cutting Speed (V): V=π⋅D⋅N1000V = \frac{\pi \cdot D \cdot N}{1000} V = 1000 π ⋅ D ⋅ N
- D : Tool diameter (mm)
- N : Spindle rotation speed (rpm)
- Advance per Tooth (fz): fz=FZ⋅Nfz = \frac{F}{Z \cdot N} f z = Z ⋅ N F
- F : Total feed (mm/min)
- Z : Number of teeth of the tool
Maintenance: The milling machine requires regular maintenance to ensure longevity and precision over time. Some key points include:
- Lubrication: Periodic check and replacement of the lubricating oil of the axes and spindle.
- Cleaning: Removal of chips and machining dust to prevent blockages or damage to moving components.
- Inspection: Periodic checking of bearings, guides and lead screws for wear and play.
Checking a Good Used Car:
- Condition of the Board and Modes: Make sure there are no signs of excessive wear or damage.
- Axis Accuracy: Check for excessive play or irregular movements in the X, Y, Z axes.
- Spindle Condition: Check that the spindle has no radial or axial play and that it operates without abnormal vibrations.
Application Areas: This milling machine is particularly suitable for mechanical workshops, component manufacturing companies and sectors requiring the production of grooves and keys with high precision.
Benefits of Buying Used: Buying a used milling machine like the Gressel JNF can be a good option for businesses looking to get high-quality machinery at a low price, especially when the machines are well-maintained and still perform well.
used key milling machine. Manufacturer Gressel Model jnf Bench measurements 1000x270mm movement X/Y/Z axes 750/145/280 speed 180-2950 rpm price on request.
