Designation of manual turning cartridges Bison-bial
3 - spiral self-centering;
4 - with independent movement of the cams.
The second number identifies the cam type and body material.
For spiral chucks:
2 - 3-cam / cast iron body;
5 - 3-cam / steel body;
6 - 4-cam / cast iron body;
7 - 4-cam / steel body;
8 - 6-cam / steel body / cast iron body;
9 - collet chucks.
For chucks with independent jaw movement and combination chucks:
3 - chucks with independent movement of the jaws:
5 - 3-cam / cast iron body;
6 - 4-cam / cast iron body;
7 - 3-cam / steel body;
8 - 4-cam / steel body.
The third number indicates the type of cartridge fit:
0 - cylindrical fit through the adapter flange - DIN 6350;
1 - tapered fit type A - DIN 55026;
3 - conical fit type C for swivel washer - DIN 55027;
4 - conical fit type D - DIN 55029 (Camlock);
5 - L-type fit - long cone (L0, L00, L1, L2);
6 - fit with adjustment (precision);
7 - cylindrical fit with frontal mounting - DIN6350;
8 - threaded connection - DIN 800.
The fourth digit is the cam type.
For spiral chucks:
4 - solid cams;
5 - prefabricated cams.
For chucks with independent jaw movement:
4 - solid cams / cast iron body;
5 - prefabricated cams / cast iron body;
6 - solid cams / steel body;
7 - prefabricated cams / steel body.
After four digits, there is an indication of the diameter of the chuck and, if it has a tapered fit, the size of the cone is indicated.
Example: cartridge 3534-315-8
3 - spiral self-centering chuck;
5 - 3-cam in a steel case;
3 - tapered fit according to DIN 55027 for a swivel washer;
4 - chuck with one-piece hardened jaws;
315 - cartridge diameter 315mm;
8 - the size of the connecting cone.
Bison-bial also makes "CT" type lathe chucks. These cartridges comply with GOST 2675-80 and come in 3 accuracy classes: A - extra high, B - high and P - increased.
Example: CTOO-250 F6 B chuck means that it is a self-centering 3-jaw steel chuck with an outer diameter of 250 mm, swivel washer mount on a spindle with a No. 6 taper of accuracy class B.
When creating the article, the Bison-bial product catalog was used.