1. Main purpose: 
honing of working surface of bush sleeves, pulleys of cilinders and bushings of internal-combustion engines (ICE), diesel and starting engines and also other details of machines and mechanisms. 

1 - diamond-bearing layer; 2 - body.

This tool is produced in a kind of pulley-sticks based on high-modulus metallopolymer connection of grades BC12, BC13 and low-modulus antifriction self-lubricated polymer connection of grade B2-04.

2. Typosizes 

Sizes of pulley-stick
Typosizes of pulley-stick ABBH	Length, L	Width, M	Height, H	Wigth of one stick, B	Height of diamond bearing layer, S	Radius of convexity, R	Quantity of sticks in a pulley, n, pieces
50 x 4	50	96	4	4	2	10	24
80 x 4	80	96	4	4	2	10	24
80 x 5	80	90	4	5	2	16	18
80 x 6	80	120	4	6	2	16	20
100 x 8	100	96	4	8	2	30	12
125 x 8	125	96	6	8	3	30	12
125 x 12	125	72	6	12	3	50	6
150 x 12	150	72	6	12	3	50	6
150 x 16	150	96	6	16	3	75	6

It is possible to agree with user producing of pulley-sticks of other typosizes and with another quantity of sticks in a pulley. Stick body is made of tough-elastic metallopolymer composite providing necessary bearing hardness for diamond layer. Pulley can be cut on separate sticks.

3. Advantages: 

• possibility of stable providing of heeded macrogeometry, roughness of surface Ra=0,8...0,9 mkm and depth of lines ("pockets" for oil) Rt=10...15 mkm, which is up to the technical requirements;

• increasing of productivity of machining to 30‰;

• firmness of sticks on polymer base in 80-150 times higher than in analogues in the same quality of honing.