Lapping tools



GP supplies ready-to-use machine tools

We supply lapping wheels, lapping segments, and dressing rings made of cast iron for all standard types of machines by familiar manufacturers, finished and ready for mounting.

We are able to optimise the following parameters according to your technical specifications:

  • quality of the cast material
  • inside and outside diameters of the wheel
  • thickness of the wheel
  • lapping media and fastening holes
  • individual lapping disk grooves in arrangement and profile.

GP supplies lapping tools for the following purposes

  • Pump making
  • Fittings production
  • Machine construction
  • Automobile construction
  • Electrical engineering and electronics
  • Roller bearing manufacturing
  • Wafer production
  • Machine knife manufacturing
  • Ceramic engineering

Dimensions:

From 300 mm to 2.000 mm diameter finished and ready for mounting.

Flat lapping

Hard metal, steel, magnetic materials, non-ferrous heavy metal, ceramics, semiconductor materials, and various sealing materials are lapped using lapping disks in the following chill-cast qualities:

 

Comparable new designation:

GGK-F

(EN-GJL-HB 175)

GGK-FP

(EN-GJL-HB 235)

GGK-P

(EN-GJL-HB 255)

GGGK 40

(EN-GJL-400-15)

GGGK 60

(EN-GJL-600-3)

Lapping balls

In this connection, GP manufactures the following chill-cast qualities

 

Comparable new designation:

GGK-F

(EN-GJL-HB 175)

to

 

GGK-P

(EN-GJL-HB 255)

and

 

GGK-40

(EN-GJS-400-15)

Qualities and specifications for lapping wheels

(Recommended values)

CGK with Lamellar Graphite

 

 

 

Quality

GGK-F

GGK-FP

GGK-P

Structure

ferritic

ferritic/pearlitic

perdominantly pearlitic

Brinell hardness(HB)

140 to 180

160 to 220

180 to 260

 

 

 

 

Comparable quality DIN 1691

GG-170 HB

GG-240 HB

GG-260 HB

Comparable quality EN 1561

EN-GJL-HB175

EN-GJL-HB235

EN-GJL-HB255

GGGK with Nodular Graphite

 

 

 

Quality

GGGK 40

GGGK 50

GGGK 60

Structure

ferritic

ferritic/pearlitic

predominantly pearlitic

Brinell hardness (HB)

140 to 180

170 to 240

210 to 300

Tensile strenght (N/mm²)¹

400 min.

500 min.

600 min.

Elongation to fracture(%) ¹

18 min.

5 min.

1 min.

Tensile yield strength at 0,2% (N/mm²)¹

250 min

320 min

380 min

 

 

 

 

Comparable quality DIN 1693

GGG 40

GGG 50

GGG 60

Comparable quality EN 1563

EN-GJS-400-18

EN-GJS-500-7

EN-GJS-600-3

1) Values are for separately case sample rod