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Flexsteel® Standard Specifications
Belt Tension Rating
Minimum Ultimate
Tension
Operating Tension
Cable Diameter
(Nominal)
Cable Pitch
(Approximate)
Belt Modulus
Imperial
PIW
PIW
in.
in.
PIW
ST800
4568
685
0.142
0.688
329,000
ST1000
5710
856
0.142
0.547
411,000
ST1250
7138
1070
0.173
0.639
514,000
ST1600
9137
1370
0.173
0.498
658,000
ST2000
11,421
1712
0.173
0.398
822,000
ST2500
14,276
2140
0.205
0.428
1,027,000
ST3150
17,988
2697
0.260
0.492
1,294,000
ST3500
19,987
2997
0.315
0.655
1,438,000
ST4000
22,842
3425
0.362
0.753
1,644,000
ST4500
25,697
3853
0.394
0.806
1,849,000
ST5000
28,552
4281
0.433
0.820
2,055,000
ST5400
30,836
4623
0.433
0.764
2,219,000
ST6000
34,263
5137
0.488
0.850
2,466,000
ST6500
37,118
5565
0.488
0.790
2,671,000
ST7000
39,973
5993
0.488
0.738
2,877,000
ST7500
42,828
6421
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3,082,000
ST8000
45683
6849
3,288,000
ST8500
48,539
7277
3,493,000
ST9000
51,394
7705
3,699,000
ST9500
54,249
8133
3,904,000
ST10000
57,104
8561
4,109,000
Metric
kN/m
kN/m
mm
mm
kN/m
ST800
800
120
3.6
17.5
58,000
ST1000
1000
150
3.6
13.9
72,000
ST1250
1250
187
4.4
16.2
90,000
ST1600
1600
240
4.4
12.7
115000
ST2000
2000
300
4.4
10.2
144,000
ST2500
2500
375
5.2
10.9
180,000
ST3150
3150
472
6.6
12.5
227,000
ST3500
3500
525
8.0
16.6
252,000
ST4000
4000
600
9.2
19.1
288,000
ST4500
4500
675
10.0
20.5
324,000
ST5000
5000
750
11.0
20.8
360,000
ST5400
5400
810
11.0
19.4
389,000
ST6000
6000
900
12.4
21.6
432,000
ST6500
6500
975
12.4
20.1
468,000
ST7000
7000
1049
12.4
18.8
504,000
ST7500
7500
1124
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540,000
ST8000
8000
1199
576,000
ST8500
8500
1274
612,000
ST9000
9000
1349
648,000
ST9500
9500
1424
684,000
ST10000
10,000
1499
720,000
Tension ratings are available in addition to those shown above. Other cable diameters may be substituted according to individual requirements. Operating tensions are based on a 6.67:1
safety factor. Cable pitch based on 48 in. (1220mm) wide belts.
Flexsteel
®
Belts
2015 Heavyweight Conveyor Belts
Flexsteel®