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GBT 850

Automatic grinding machine with double grinding wheel to grind the sides of the teeth of carbide tipped circular saw blades from ø100 to ø850 mm.

AUTOMATIC SIDE GRINDING MACHINE OF CARBIDE-TIPPED CIRCULAR SAW BLADES FROM ø100 TO ø850 MM DIAMETER.

GBT850DUO

HIGHLIGHTS

  • Any tooth pitch is possible
  • Integrated refrigeration equipment
  • Robust and very simple design that allows continuous use of the machine without breakdowns
  • Easy to use
  • Very compact machine with a wide range of disc diameters: from 100 to 850 mm.

ELITE GBT 850. THE CONCEPT.

Introducing ELITE GBT 850

The ELITE model GBT 850 is our 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 850. HOW IT WORKS

Very simple programming through a guided menu or entering grinding data.

Automatic work by means of 4 CNC axes:

  • X: Sharpening path
  • Y1: Tangential angle of wheel No. 1
  • Y2: Tangential angle of wheel No. 2
  • A: Tooth pitch

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.

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.

Control Panel

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

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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

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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 850. 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 (two 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 850. SPECIFICATIONS

TECHNICAL DATAGBT 850
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 8mm.
Tooth pitchFrom 1 to 125 mm.
Grinding wheel diameterø100 mm. (2 units)
Grinding wheel hole diameterø20 mm.
AutomationUsing 4 CNC axes (X, Y1, Y2, A)
Manual axlesB, Z
Saw holdingBy pneumatic clamping
Motor wheel0.75 kW x 2 units
Grinding wheel speedAdjustable from 5000 to 9000 RPM
Machine dimensions1650 x 1200 x 1900mm.
Machine weight740 Kg.
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 REQUIREMENTS

A 6 bar air connection is required. Connection voltage: 220/400V 2Ph 50/60Hz
Required connection power: 2.5 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.pdf


VIEW USER MANUAL


COMPLETE SOLUTION FOR THE REPAIR OF CIRCULAR SAWS

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Together with the tungsten carbide plate welder ELITE model SOLDAmaq 1200, you can carry out the complete repair of your circular saws in three steps:

  • Desoldering of damaged teeth in the welder SOLDAmaq 1200
  • Welding of the new carbide plates in the welder SOLDAmaq 1200
  • Grinding of the side flanks on the GBT 850

And we already have the saw repaired!


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 670Chipbreaker slotsNoNoNo
MVB 650NoHollow faceNoNo
GBT 851NoNoNoYes both sides at same time
GBT 850NoNoNoYes both sides at same time
GBT 750NoNoNoYes: One side at a time