FULLY AUTOMATIC CNC-CONTROLLED MACHINE FOR SIDE GRINDING WITH DOUBLE WHEEL ON CARBIDE-TIPPED CIRCULAR SAW BLADES FROM ø100 TO ø850 MM. WITH 5 CNC AXIS
HIGHLIGHTS
- EASY TO USE: Control panel with 10,1" color LCD screen and on-screen guided instructions
- LOW MAINTENANCE: Hydraulic free for trouble free maintenance
- 5 CNC axes for automatic work programmable from the control panel
- Completely automatic sides grinding of circular saw blades with carbide tip
- Very compact machine with a wide range of disc diameters: from 100 to 850 mm.
ELITE GBT 851. THE CONCEPT.
The ELITE model GBT 851 is our CNC automatic side grinding machine for circular saws with tungsten carbide teeth from ø100 to ø850 mm. diameter. It is similar to the GBT 850 but with 1 more CNC axes that allow the machine to be fully automatic in each adjustment of the tooth geometry, counting a total of 5 CNC axes.
This version is equipped with a double grinding wheel and its CNC operation with a 10.1" color LCD screen allows precise and fast sharpening of the tooth flanks to manufacture carbide circular saws or repair recently welded teeth when replacing teeth.
It is designed to be automatic without unnecessary additional costs. No complicated extra that can easily break or are expensive to repair.
ELITE GBT 851. HOW IT WORKS
Very simple programming through a guided menu or entering grinding data.
Fully automatic operation using 5 CNC axes:
- A: Tooth pitch
- X: Sharpening path
- Y1: Left tangential angle of wheel No. 1
- Y2: Right tangential angle of wheel No. 2
- Z: Lateral angle
Fully enclosed cabin for silent operation with a very fast door opening system that guarantees quick mounting of the saw blade and access door for maintenance.
Saw diameter from 100 to 850 mm, for grinding the flanks of scoring discs or portable machines as well as sawmill saws.
Tooth pitch programmable from the control panel.
Easy to use control panel
The control panel incorporates a color touch screen. This screen has been designed with a fast and easy-to-use interface that makes it very user-friendly. It is also possible to create or edit a program while the machines is running.
The machine includes a LED cabin light as standard.
Tooth pitch programmable through the software on the control panel.
The color touch screen control panel allows creation or editing of a program while the machine is working on another program. Among the programmable values are:
- Tooth angle programming: The grinding wheel axis will automatically move to the value entered in the program.
- Sharpening path
- Sharpening load
- Sharpening speed
- Tooth pitch
- Indexing movement of the tooth feeding pawl
- Number of teeth
- Broken teeth
Grinding wheel rotation speed variable from 5.000 to 9.000 RPM
The direct grinding wheel spindles are adjustable between 5,000 to 9,000 RPM for optimal sharpening quality with minimal grinding wheel wear.
The spindles are driven by a frequency inverter, so you can adjust the grinding wheel speed to the optimal value as well as reduce energy consumption.
Saw diameter
Saw diameter from ø100 mm. up to ø850mm. diameter to grind the flanks of scoring discs or portable machines as well as sawmill saws.
Allows indexing of any type of tooth pitch.
Integrated refrigeration equipment
Machine operates with water-soluble coolant or grinding oil for better sharpening quality and longer grinding wheel life.
Integrated coolant system with 220-liter tank and removable grates for easy cleaning.
Easy access and maintenance
At the back of the machine we find the electrical panel at the bottom and the mechanical system at the top, both protected by their corresponding easy-access panel, which also reduces the total space needed for the machine.
ELITE GBT 851. EQUIPMENT INCLUDED
- Grinding wheel holder for sharpening wheels (2 units).
- 3 mm. feed pawl.
- Lighting of the work area using LED lamp.
- Device for sharpening saws of equal diameters.
- Machine closed by enclosure.
- Prepared for connection to a machine filtration system or a centralized filtration system.
ELITE GBT 851. SPECIFICATIONS
| TECHNICAL DATA | GBT 851 |
|---|---|
| Saw blade diameter | From ø100 to ø850 mm (4" to 33.5") |
| Saw blade bore diameter | From ø10 mm |
| Saw tooth thickness | Up to 14 mm |
| Saw body thickness | Up to 8 mm |
| Tooth pitch | From 1 to 125 mm (4.92"). CNC Controlled |
| Automation | Using 5 CNC axes (A, X, Y1, Y2, Z) |
| Saw blade clamping | By Pneumatic Piston |
| Grinding Wheel Motor | 0.75 kW (each unit) |
| Grinding Wheel Speed | Adjustable from 5000 to 9000 RPM |
| Grinding Wheel Diameter | ø100 mm |
| Diameter of grinding wheel hole | ø20 mm |
| Machine Dimensions | 1650 x 1200 x 1900 mm |
| Machine Weight | 840 kg |
| FLANK GRINDING | |
| Grinding Travel | Up to 40 mm |
| Rake Angle | -15° to +30° |
| Angle Radial cutting | From -5º to +6º |
| Tangential cutting angle | From 0º to 8º |
| COOLING EQUIPMENT | |
| Tank capacity | 220 liters |
| Coolant flow rate | Up to 40 liters/minute |
TECHNICAL REQUIREMENTS
6 bar air connection required.
Connection voltage: 230-240V 2Ph, 50/60Hz
Required connection power: 2.8 kW
RECOMMENDED OPTIONAL ACCESSORIES
Saw holders for incisors and for discs, and centering rings in various sizes
For better sharpening quality, it is recommended to equip the machine with the filtration system ELITE FILTRAmaq UNO. Filtration down to 2 µm.
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MACHINES COMPARISONS AT A GLANCE
| MODEL | TOP GRINDING | FACE GRINDING | BACK OFF GRINDING | SIDES GRINDING |
|---|---|---|---|---|
| AVB 850 | All tooth shapes | All tooth shapes | No | No |
| AVB 750 | All tooth shapes | All tooth shapes | No | No |
| SVG 850 | All tooth shapes | Flat teeth | No | No |
| SVG 750 | All tooth shapes | Flat teeth | No | No |
| MVB 850 | Flat teeth | Flat teeth | Yes | No |
| MVB 750 | No | No | Yes | No |
| MVB 670 | Chipbreaker slots | No | No | No |
| MVB 650 | No | Hollow face | No | No |
| GBT 851 | No | No | No | Yes both sides at same time |
| GBT 850 | No | No | No | Yes both sides at same time |
| GBT 750 | No | No | No | Yes: One side at a time |