XL BRECOFLEX® polyurethane timing belt

Version:

  • Standard, single-sided
  • 1/5" = 5,08 mm
  • Preferred belt widths: 6.35, 7.94, 9.53, 12.7, 19.1, 25.4 mm
  • In-between widths, larger widths and other dimensions are possible on request

Available endless lengths:

  • For standard delivery lengths refer to table
  • Further lengths on request

Please consider our warranty.

standard storage goods
Length Teeth
[mm]
CAD 152,4 30 CAD
CAD 177,8 35 CAD
CAD 203,2 40 CAD
CAD 228,6 45 CAD
CAD 254 50 CAD
CAD 279,4 55 CAD
CAD 304,8 60 CAD
CAD 330,2 65 CAD
CAD 355,6 70 CAD
CAD 381 75 CAD
CAD 406,4 80 CAD
CAD 431,8 85 CAD
CAD 457,2 90 CAD
CAD 482,6 95 CAD
CAD 508 100 CAD
CAD 533,4 105 CAD
CAD 558,8 110 CAD
CAD 584,2 115 CAD
CAD 609,6 120 CAD
CAD 635 125 CAD
CAD 660,4 130 CAD

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 24,400 1,973 0,000 2000 13,910 1,125 2,360
20 23,800 1,922 0,040 2200 13,600 1,100 2,530
40 23,200 1,879 0,079 2400 13,310 1,076 2,710
60 22,800 1,842 0,116 2600 13,050 1,055 2,870
80 22,400 1,809 0,152 2800 12,800 1,035 3,060
100 22,000 1,780 0,186 3000 12,570 1,017 3,190
200 20,600 1,667 0,349 3200 12,360 0,999 3,350
300 19,630 1,587 0,498 3400 12,160 0,983 3,500
400 18,860 1,525 0,639 3600 11,960 0,967 3,650
500 18,230 1,474 0,772 3800 11,780 0,953 3,790
600 17,700 1,431 0,899 4000 11,610 0,939 3,930
700 17,240 1,394 1,022 4500 11,210 0,907 4,270
800 16,830 1,361 1,140 5000 10,860 0,878 4,600
900 16,470 1,332 1,255 5500 10,540 0,852 4,910
1000 16,140 1,305 1,367 6000 10,240 0,828 5,200
1100 15,840 1,281 1,475 6500 9,970 0,806 5,490
1200 15,570 1,259 1,582 7000 9,720 0,786 5,760
1300 15,310 1,238 1,685 7500 9,490 0,767 6,020
1400 15,070 1,219 1,787 8000 9,270 0,749 6,280
1500 14,850 1,201 1,886 8500 9,060 0,732 6,520
1600 14,640 1,184 1,984 9000 8,860 0,717 6,760
1700 14,450 1,168 2,080 9500 8,680 0,702 6,980
1800 14,260 1,153 2,170 10000 8,510 0,688 7,200
1900 14,080 1,139 2,270

Rotational speeds over 10000 rpm and/or belt speeds over 80 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] 6,35 7,94 9,53 12,7 19,1 25,4
BRECOFLEX XL 180 240 300 420 690 930

3. Belt weights [kg/m]

Belt width b [mm] 6,35 7,94 9,53 12,7 19,1 25,4
BRECOFLEX XL 0,016 0,020 0,024 0,030 0,380 0,061

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 XL 10 30 15 30

XL BRECOFLEX® Polyurethan-Zahnriemen