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GBT 851

Fully automatic machine with double grinding wheel to grind the sides of the teeth on circular saws with carbide teeth from ø100 to ø850 mm. With 6 CNC axes for complete automatic flank machining in one cycle

FULLY AUTOMATIC MACHINE WITH DOUBLE GRINDING WHEEL FOR REPARING OR MANUFACTURING CARBIDE-TIPPED CIRCULAR SAW BLADES FROM ø100 TO ø850 MM.

COMPLETELY AUTOMATIC WITH 6 CNC AXIS

GBT850DUO

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
  • 6 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 fully automatic dual-side grinding machine for circular saw blades from ø100 to ø850 mm. diameter.

It allow for precise and rapid grinding of tooth flanks to manufacture carbide-tipped circular saw blades or for tip replacements.

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 6 CNC axes:

  • A: Tooth pitch
  • B: Cutting angle
  • 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

Panel%20control

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.

Integrated refrigeration equipment

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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

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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. Cabina%20mecanica
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ELITE GBT 851. EQUIPMENT INCLUDED

  • Saw holder for saws with a diameter of 100 to 210 mm.
  • Saw holder for saws with a diameter of 210 to 850 mm.
  • Centering ring: ø30 mm.
  • 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.
  • Small mist extractor.
  • Machine closed by enclosure.
  • Prepared for connection to a machine filtration system or a centralized filtration system.

ELITE GBT 851. SPECIFICATIONS

TECHNICAL DATAGBT 851
Saw blade diameterFrom ø100 to ø850 mm. (4" to 33,5")
Saw blade hole diameterFrom ø10 mm.
Saw tooth thicknessUp to 14mm.
Saw body thicknessUp to 8 mm.
Tooth pitchUp to 125 mm (4,92"). CNC controlled.
FLANK GRINDING
Grinding pathUp to 40 mm. (1,57")
Rake angleFrom -15º to +30º
Radial cutting angleFrom -5º to +6º
Tangential cutting angleFrom 0º to 8º
REFRIGERATION EQUIPMENT
Tank capacity220 liters
Coolant flow rateUp to 40 liters/minute
TECHNICAL DATA
AutomationUsing 6 CNC axes (A, B, X, Y1, Y2, Z)
Saw blade clampingBy pneumatic piston
Motor wheel0,75 kW (each unit)
Grinding wheel speedAdjustable from 5000 to 9000 RPM
Diameter of grinding wheelø100 mm.
Diameter of grinding wheel holeø20 mm.
Machine dimensions1650 x 1200 x 1900mm.
Machine weight840 Kg.

TECHNICAL REQUIREMENTS

6 bar air connection required. Connection voltage: 230-240V 2Ph, 50/60Hz Required connection power: 2.8 kW


For better sharpening quality, it is recommended to equip the machine with the filtration system ELITE FILTRAmaq UNO. Filtration down to 2 µm.
FILTRAmaq%20UNO


DOWNLOAD LEAFLET

GBT 850-ES_EN web.pdf


MACHINES COMPARISONS AT A GLANCE

MODELTOP GRINDINGFACE GRINDINGBACK OFF GRINDINGSIDES GRINDING
AVB 850All tooth shapesAll tooth shapesNoNo
AVB 750All tooth shapesAll tooth shapesNoNo
SVG 850All tooth shapesFlat teethNoNo
SVG 750All tooth shapesFlat teethNoNo
MVB 850Flat teethFlat teethYesNo
MVB 750NoNoYesNo
MVB 650NoHollow faceNoNo
GBT 851NoNoNoYes both sides at same time
GBT 850NoNoNoYes both sides at same time
GBT 750NoNoNoYes: One side at a time