FULLY AUTOMATIC CNC-CONTROLLED MACHINE WITH DOUBLE GRINDING WHEEL FOR SIDES GRINDING OF CARBIDE-TIPPED CIRCULAR SAW BLADES UP TO ø33,4".
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 axis for automatic work programmable from the control panel
- Automatic measuring system for the grinding wheels wear as well as the circular saw position
- Very compact machine with a wide range of disc diameters: from ø3,93" to 33,4".
ELITE GBT 851. THE CONCEPT.
The ELITE model GBT 851 is our most advanced automatic CNC sides grinding machine for circular saws with tungsten carbide teeth from ø100 to ø850 mm. It is similar to the GBT 850 but with 1 more CNC axis and automatic measuring systems which allows the machine to be fully automatic in each adjustment of the tooth geometry, counting a total of 5 CNC axis.
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 sides to manufacture carbide circular saws or repair recently welded teeth when replacing them.
ELITE GBT 851. HOW IT WORKS
Very simple programming through a guided menu or entering grinding data.
Fully automatic operation using 5 CNC axis:
- A: Tooth pitch
- X: Sharpening path
- Y1: Left tooth side angle of wheel No. 1
- Y2: Right tooth side angle of wheel No. 2
- Z: Tooth cutting angle
Fully enclosed enclosure 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 ø100 to ø850 mm, for grinding the sides of scoring saws of 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 machine 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.
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 grinding wheels (2 units).
- Lighting of the work area using LED lamp.
- Device for sharpening saws of equal diameters.
- Machine with complete enclosure.
- Prepared for connection to a single or a centralized filtration system.
ELITE GBT 851. SPECIFICATIONS
| TECHNICAL DATA | GBT 851 |
|---|---|
| Saw blade outside diameter | From ø4" to 33,5" |
| Saw blade hole diameter | From ø0,39" |
| Saw blade thickness | Up to 0,31" |
| Tooth pitch | Up to 4,92" |
| Tooth pitch | From 0,039" to 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 | ø3,9" |
| Diameter of grinding wheel hole | ø7,87" |
| Machine Dimensions | 1650 x 1200 x 1900 mm |
| Machine Weight | 750 kg |
| SIDES GRINDING | |
| Grinding Travel | Up to 1,57" |
| 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 pneumatic air connection required.
Connection voltage: 230-240V 2Ph, 50/60Hz
Required connection power: 2.8 kW
RECOMMENDED OPTIONAL ACCESSORIES
- Saw blade holders for circular saws with external ø7.8"–17.7", ø15,7"–25,5", and ø23,6"–33,4".
- Centering rings for circular saws with bore hole in different sizes.
- Reinforced saw holder device
- Mist extraction equipment.
- Equipment for oil operation.
- Filtration system: ELITE FILTRAmaq UNO, SOLO, or PRO models. Filtration up to 2 µm. Recommended for improved sharpening quality.
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MACHINES COMPARISONS AT A GLANCE
| MODEL | TOP GRINDING | FACE GRINDING | BACK OFF GRINDING | SIDES GRINDING | AUTOMATIC MEASUREMENT |
|---|---|---|---|---|---|
| AVB 851 | All tooth shapes | All tooth shapes | No | No | Yes |
| AVB 850 | All tooth shapes | All tooth shapes | No | No | No |
| AVB 750 | All tooth shapes | All tooth shapes | No | No | No |
| SVG 850 | All tooth shapes | Flat teeth | No | No | No |
| SVG 750 | All tooth shapes | Flat teeth | No | No | No |
| MVB 850 | Flat teeth | Flat teeth | Yes | No | No |
| MVB 750 | No | No | Yes | No | No |
| MVB 670 | Chipbreaker slots | No | No | No | No |
| MVB 650 | No | Hollow face | No | No | No |
| GBT 851 | No | No | No | Yes both sides at same time | Yes |
| GBT 850 | No | No | No | Yes both sides at same time | No |
| GBT 750 | No | No | No | Yes: One side at a time | No |