Dimensional deviation (unit: mm)
Shape | Schematic | Size(mm) | |
Axial | Vertical | ||
Block | ![]() |
30<W<100;15<L<80;20<H<60 100≤W≤240;30<L<240;30<H<60 240<W<300;40<L<120;30<H<60 |
|
Disk | ![]() |
6≤D<8;20<H<32 8≤D<9.5;20<H<36 9.5≤D<32;20<H<44 32≤D<250;22<H<60 |
8≤D<17;20<H<32 17≤D<90;22<H<60 |
Ring | ![]() |
18≤D<32;20<H<35 32≤D<250;20<H<45 |
20≤D≤60 8≤(D-d)/2<15 25≤H≤40 |
Arc | ![]() |
25≤W≤55; 15≤T≤40; 25≤H≤55; |
25≤W≤75 25≤T≤50 25≤H≤100 |
Dimensional deviation (unit: mm)
Size | Allowable deviation of sintered surface | Allowable deviation of working surface | ||||
Perpendicular to the pressing direction | Direction of suppression | Flat grinding | Internal and external round grinding | Wire cutting | slice | |
≤10 | ±0.25 | ±0.30 | ±0.04 | ±0.05 | ±0.06 | ±0.05 |
10~20 | ±0.40 | ±0.45 | ±0.05 | ±0.05 | ±0.08 | ±0.08 |
20~50 | ±0.60 | ±0.70 | ±0.06 | ±0.05 | ±0.10 | ±0.10 |
50~80 | ±1.00 | ±1.10 | ±0.08 | ±0.05 | ±0.10 | ±0.10 |
80~150 | ±1.00 | ±1.10 | ±1.15 | ±0.15 |
Shape deviation (unit: mm)
Variation type | Variation type | Basic size(mm) | Deviation | |
Parallelism | Working surface room | One-half of the tolerance value | ||
Verticality | Between sintered surfaces | Random | 90°±1° | |
Between machined surface and sintered surface | 90°±1° | |||
Working surface room | 90°±0.15° | |||
Concentricity | Between sintered surfaces | Outer diameter | ≤14 | ±0.35mm |
14~24 | ±0.60mm | |||
24~40 | ±0.80mm | |||
40~60 | ±1.100mm | |||
60~80 | ±1.150mm |
Jinlun Magnet specialized in the research and development, production, and sales of high-performance rare-earth permanent magnet materials.
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