+49 (0) 271 / 60 - 0
+49 (0) 271 / 60 - 200Lapping 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
