Technical data T2,5

1. Tooth shear strength

specific tooth force

Rotational speed n [rpm] Ftspez [N/cm] Rotational speed n [rpm] Ftspez [N/cm]
0 9,03 2000 4,91
20 8,72 2200 4,80
40 8,48 2400 4,70
60 8,28 2600 4,65
80 8,10 2800 4,60
100 7,95 3000 4,51
200 7,39 3200 4,48
300 7,01 3400 4,43
400 6,71 3600 4,36
500 6,48 3800 4,28
600 6,28 4000 4,22
700 6,11 4500 4,15
800 5,97 5000 4,09
900 5,83 5500 3,95
1000 5,71 6000 3,82
1100 5,61 6500 3,71
1200 5,51 7000 3,60
1300 5,41 7500 3,51
1400 5,33 8000 3,42
1500 5,25 8500 3,33
1600 5,17 9000 3,26
1700 5,10 9500 3,18
1800 5,04 10000 3,05
1900 4,97

The specific tooth force Ftspez is the maximum force N a belt tooth with a width of 1 cm can transmit. This value depends on the rotational speed of the drive pulley. The calculation takes into account each identical carrying values for each meshing tooth. With more than 12 meshing teeth ze is limited to 12.

\begin{align}
F_t&= {F_{tspez} \cdot z_e \cdot b}\\
F_t& = {\text{Tangential force}}\\
F_{tspez}&= {\text{Specific tooth force in N/cm}}\\
b& = \text{Belt width in cm} \\
z_e&= \text{Number of meshing teeth}\\
z_{emax}&= 12
\end{align}

2. Tension cord strength (M) Ftzul [N] (open length)

permitted tensile force of the belt cross-section

Belt width b [mm] 8 10 20
BRECO T2,5 77 98 196

Specific elasticity Cspez [N]:

Bsp: 10[6] = 106

Belt width b [mm] 8 10 20
BRECO T2,5 1.93*10[4] 2,45*10[4] 4,90*10[4]

Belt weights [kg/m]:

Belt width b [mm] 8 10 20
BRECO T2,5 0,010 0,015 0,030

Pulley width [mm]:

Belt width b [mm] 8 10 20
BRECO T2,5 12 14 24

3. Flexibility

Minimum number of teeth, minimum diameter

 

( X ) without contraflexure

 

 

( X X ) with contraflexure

 

Belt type Number of teeth Tension roller Number of teeth Tension roller
  zmin (X) dmin [mm] (X) zmin (XX) dmin [mm] (XX)
BRECO T2,5 15 15 18 18