TYPE 27

27 - DEPRESSED CENTRE GRINDING WHEELS

The Type 27 grinding wheels are a very popular group of general purpose and specialized abrasive tools intended for rough grinding on various materials.

They are commonly used in building, shipbuilding, metal, foundry, engineering, chemical and other industries as well as in smaller workshops. They can be used on portable electrically or pneumatically driven portable horizontal/vertical spindle grinders.

Most frequently they are operated at angles 20-35° and 90° when required by grinding requirements.

Depending on application and grinding requirements, a wide range of the Type 27 grinding wheels is available for customer, refer to the following Table.

 

27 -D x U x H 27 -D x U x H

1. PRODUCT LINE - ECO LINE

  • ECO LINE Version
    These grinding wheels are intended for not very demanding grinding operations. Similar applications like in the case of the STANDARD version.
    They can also be used for grinding operations where the STANDARD version is too hard.

2. PRODUCT LINE - PRO LINE

  • STANDARD version
    Basic version. General purpose type.
    These grinding wheels are intended for most grinding operations on steel, cast iron, cast steel materials with large, continuous surfaces and with considerable grinding allowances.
    For grinding machines of medium/regular power and for medium operating conditions.
    They are characterized by a medium hardness grade, thus they are able to use high rates of stock re­moval and may be used for grinding of harder materials.
  • EXTRA version
    Increased hardness. Long service life
    These grinding wheels are intended for grinding on steel, cast iron, cast steel workpieces with non-conti­nuous, narrow, sharp surfaces where the operating surface of the grinding wheel is subject to aggressive counteraction of workpiece and thus causing a premature wear.For grinders of mean/standard power and for mean operating conditions.
    They can also be used on grinders with increased parameters: air-operated, turbine or electrical with a higher frequency of power supply
    They are characterized by a higher hardness than the standard versions and a longer service life
    When a high rate of stock removal causes a local overheating in the form of burns on material being ground or “loading” of active wheel surface, use the STANDARD version.
  • INOX version
    These grinding wheels are intended for grinding on stainless, acid resistant and high-alloy steels. They are able to perform so called “cool” grinding. Successfully used for grinding of carbon and alloy constructio­nal steels.
    These wheels do not contain iron, sulphur and chlorine. They don’t cause corrosion or discoloration of the material being ground.
  • ALUMINUM version
    These grinding wheels are intended for grinding on non-ferrous metals such as aluminium, bronze, brass.
  • STONE version
    These grinding wheels are intended for grinding on concrete, reinforced concrete, terrazzo, natural and arti­ficial stones, ceramics as well as hard, brittle cast iron and also for descaling and desanding of castings.

 

3 PRODUCT LINE – MASTER LINE

  • MASTER LINE version
    Special abrasive material. These grinding wheels are intended for grinding on steel, cast iron, cast steel workpieces with large sur­faces and high grinding allowances,
    They require grinding machines with high parameters, especially increased power and rigidity: pneumatic, turbine or electrical with an increased frequency of supply power,
    They are characterized by the highest metal removal rate.

It is possible to design a grinding wheel meeting individual customer’s needs.

 

TYPE - DIMENSIONS [mm]

ØD x U x ØH
CHARACTERISTICS max. permissible operating speed
[1/min]
A30QBF-80 A24QBF-80 95A30QBF-80 STANDARD 95A24QBF-80 STANDARD 95A30TBF-80 EXTRA 95A24TBF-80 EXTRA
27 - 100 x 6 x 16 15 300
27 - 115 x 6 x 22,2 x x x 13 300
27 - 115 x 8 x 22,2 x x
27 - 125 x 6 x 22,2 x x x 12 250
27 - 125 x 8 x 22,2 x x
27 - 150 x 6 x 22,2 x x x 10 200
27 - 150 x 8 x 22,2 x x
27 - 180 x 4 x 22,2 x x 8 500
27 - 180 x 6 x 22,2 x x x
27 - 180 x 8 x 22,2 x x
27 - 180 x 10 x 22,2 x x
27 - 230 x 4 x 22,2 x x 6 650
27 - 230 x 6 x 22,2 x x x
27 - 230 x 8 x 22,2 x x
27 - 230 x 10 x 22,2 x x
PRODUCT
LINE
ECO LINE PRO LINE

 

TYPE - DIMENSIONS [mm]
ØD x U x ØH
CHARACTERISTICS max. permissible operating speed
[1/min]
95A30QBF-80 INOX 50A30PBF-80 ALUMINIUM 98C30QBF-80 STONE 98C24QBF-80 STONE 55A30QBF-80 55A24QBF-80
27 - 100 x 6 x 16 15 300
27 - 115 x 6 x 22,2 x x x x 13 300
27 - 115 x 8 x 22,2 x x x x
27 - 125 x 6 x 22,2 x x x x 12 250
27 - 125 x 8 x 22,2 x x x x
27 - 150 x 6 x 22,2 x x x x 10 200
27 - 150 x 8 x 22,2 x x x x
27 - 180 x 4 x 22,2 8 500
27 - 180 x 6 x 22,2 x x x x
27 - 180 x 8 x 22,2 x x x x
27 - 180 x 10 x 22,2
27 - 230 x 4 x 22,2 6 650
27 - 230 x 6 x 22,2 x x x x
27 - 230 x 8 x 22,2 x x x x
27 - 230 x 10 x 22,2
PRODUCT LINE PRO LINE MASTER LINE

 

APPLICATION - PURPOSE A30QBF-80 A24QBF-80 95A30QBF-80 STANDARD 95A24QBF-80 STANDARD 95A30TBF-80 EXTRA

95A24TBF-80 EXTRA

steel - general purpose x x
ordinary constructional steel x x x
higher-hardness steel x x
higher-strength steel x x
tool and high-alloy steel x x
stainless and acid resistant steel
welds x x x
steel - bevelling x
steel – grinding of narrow, discontinuous areas x
steel – high power grinding machines x
cast steel x x
cast iron – general purpose x x
chilled cast iron
cast iron – descaling and desanding
ductile cast iron x x x
grey cast iron x x
aluminium and its alloys
non-ferrous metals
concrete, terazzo
stone, ceramics

 

APPLICATION - PURPOSE 95A30QBF-80 INOX 50A30PBF-80 ALUMINIUM 98C30QBF-80 STONE 98C24QBF-80 STONE 55A30QBF-80 55A24QBF-80
steel - general purpose
ordinary constructional steel
higher-hardness steel
higher-strength steel x
tool and high-alloy steel x
stainless and acid resistant steel x
welds
steel - bevelling
steel – grinding of narrow, discontinuous areas
steel – high power grinding machines x
cast steel
cast iron – general purpose
chilled cast iron x
cast iron – descaling and desanding x
ductile cast iron
grey cast iron
aluminium and its alloys x
non-ferrous metals x
concrete, terazzo x
stone, ceramics x