Technical data AT20, SFAT20

Belt width b [cm]

\begin{align}
b& = {F_U \over {z_e \cdot F_{Uspez}}} && F_U [N] \\
b& = {100 \cdot M \over {z_1 \cdot z_e \cdot M_{spez}}} && M [Nm]\\
b& = {1000 \cdot P \over {z_1 \cdot z_e  \cdot P_{spez}}} && P [kW]
\end{align}

Load bearing characteristics of the drive

when belt width [cm] is

\begin{align}
F_{U}& = {F_{Uspez} \cdot z_e \cdot b} &&[N]\\
M& = {{M_{spez} \cdot z_1 \cdot z_e \cdot b} \over {100}} &&[Nm]\\
P& = {{P_{spez} \cdot z_1 \cdot z_e \cdot b} \over {1000}} &&[kW]
\end{align}

Number of teeth in mesh

\begin{align}
 z_{e max}& = {12}\\
 z_e& = {{{z_1} \over {180}} \cdot \arccos{{t \cdot (z_2 - z_1)} \over {2\pi \cdot a}}}\\
 \end{align}

 

1. Tooth shear strength

specific belt tooth strength

Rotational speed n [rpm] Fuspez [N/cm] Mspez [Ncm/cm] Pspez [W/cm] Rotational speed n [rpm] Fuspez [N/cm] Mspez [Ncm/cm] Pspez [W/cm]
0 175,00 55,732 0,000 1600 88,26 28,110 47,095
20 171,73 54,692 1,145 1700 85,96 27,374 48,729
40 168,69 53,724 2,250 1800 83,76 26,676 50,279
60 165,85 52,818 3,318 1900 81,67 26,010 51,748
80 163,17 51,966 4,353 2000 79,68 25,375 53,142
100 160,66 51,164 5,357 2200 75,94 24,185 55,713
200 149,85 47,723 9,994 2400 72,49 23,087 58,021
300 141,18 44,961 14,124 2600 69,30 22,070 60,085
400 133,94 42,655 17,866 2800 66,32 21,121 61,925
500 127,72 40,674 21,295 3000 63,53 20,232 63,556
600 122,27 38,939 24,464 3200 60,90 19,396 64,992
700 117,42 37,395 27,410 3400 58,43 18,607 66,245
800 113,05 36,004 30,160 3600 56,08 17,860 67,327
900 109,08 34,738 32,737 3800 53,85 17,151 68,245
1000 105,43 33,577 35,159 4000 51,73 16,476 69,010
1100 102,07 32,505 37,440 4500 46,84 14,918 70,294
1200 98,94 31,509 39,592 5000 42,44 13,516 70,764
1300 96,02 30,579 41,626 5500 38,44 12,241 70,498
1400 93,28 29,707 43,549 6000 34,77 11,072 69,565
1500 90,70 28,885 45,370 6500 31,38 9,994 68,020

Rotational speeds over 6500 rpm and/or belt speeds over 40 m/s are in need of a special drive design. Please request for our advice.

2. Tension cord strength [N]

permitted tensile force of the belt Fzul

Belt width b [mm] 32 50 75 100 150
BRECOFLEX AT20 / AT20-E 6000 10000 15600 21200 32400
BRECOFLEX AT20 VA-tension member 4800 8000 12480 16960 25920
BRECOFLEX SFAT20 - 10000 15600 21200 -
BRECOFLEX SFAT20 VA-tension member - 8000 12480 16960 -

3. Belt weights [kg/m]

Belt width b [mm] 32 50 75 100 150
BRECOFLEX AT20 0,307 0,480 0,720 0,960 1,423
BRECOFLEX AT20-DL 0,365 0,570 0,855 1,140 -
BRECOFLEX AT20-T 0,372 0,588 0,888 1,187 -
BRECOFLEX SFAT20 - 0,480 0,720 0,960 -

4. Flexibility

Minimum numbers of teeth, minimum diameter

( X ) without contraflexure

( X X ) with contraflexure

Belt type Number of teeth zmin ( X ) Tension roller dmin [mm] ( X ) Number of teeth zmin ( X X ) Tension roller dmin [mm] ( X X )
BRECOFLEX AT20 18 120 25 180
BRECOFLEX AT20-DL 25 180 25 180
BRECOFLEX AT20-T 25 120 25 180
BRECOFLEX AT20-E 15 100 22 150
BRECOFLEX AT20-VA 32 200 40 300
BRECOFLEX AT20-DL-VA 60 380 40 300
BRECOFLEX AT20-T-VA 32 200 60 380
BRECOFLEX SFAT20 18 120 25 180
BRECOFLEX SFAT20-E 15 100 22 150
BRECOFLEX SFAT20-VA 32 200 40 300