Belt's
Designation

Full Belt Tensile Strength

Maximum
Recommended
Working Tension

Nominal Carcass Thickness

Nominal Carcass Weight

Maximum belt width
(mm) for adequate
load support bulk
density (t/m3)

Minimum belt
width (mm) for
adequate
troughing

Type

Rating

Kn/m

Vulcanised splice

Mechanical fasteners Kn/m

(mm)

Kg / cm / mtr

Upto 1.0

Upto 1.5

Upto 2.5

20 Deg. Idlers

30 deg idlers

45 deg ilders

General duty

200/2 250/2 315/2 315/3 400/2 400/3 500/3 630/3

200
250
315
315
400
400
500
630

20
25
31
31
40
40
50
63

20
25
31
31
40
40
*
*

2.4
2.5
2.7
3.2
2.8
3.4
3.4
3.5

0.022 0.023 0.024 0.025 0.025 0.027 0.030 0.031

650 650 900 1000 1000 1200 1200 1200

500 600 650 800 800 900 900 1000

- -
- -
500 650 650 650 650
800

300 300 300 400 400 500 500 500

400 400 400 500 500 500 500 500

500 500 500 500 500 500 500 500

Heavy duty

200/2 250/2 315/2 315/3 400/2 400/3 400/4 500/3 500/4 630/3 630/4 800/4 1000/4 1000/5 1250/4 1250/5

200
250
315
315
400
400
400
500
500
630
630
800
1000
1000
1250
1250

20
25
31
31
40
40
44
50
55
63
70
90
110
110
140
140

20
25
31
31
40
40
40
*
*
*
*
*
*
*
*
*

2.8
3.0
3.1
3.6
3.2
3.6
4.5
3.7
4.5
3.9
5.0
5.4
5.8
6.6
6.5
7.1

0.026 0.028 0.029 0.030 0.030 0.032 0.044 0.034 0.046 0.036 0.049 0.051 0.054 0.066 0.062 0.080

800 800 1000 1200 1200 1200 1200 1400 1400 1600 1600 1600 1600 1600 1600 1600

650 650 800 1000 1000 1000 1000 1000 1200 1400 1600 1600 1600 1600 1600 1600

500 500 650 800 800 800 800 800 900 1200 1400 1600 1600 1600 1600 1600

400 400 400 500 500 500 500 500 500 650 650 650 800 800 800 900

400 400 500 500 500 500 500 500 650 800 800 900 900 900 900 900

500 500 500 500 500 650 650 650 650 800 900 900 1000 1000 1000 1000

Extra heavy duty

400/4 500/4 630/4 800/4 800/5 1000/4 1000/5 1250/4 1250/5 1400/4 1400/5 1600/4 1600/5

400
500
630
800
800
1000
1000
1250
1250
1400
1400
1600
1600

44
55
70
90
90
110
110
140
140
145
155
180
180

*
*
*
*
*
*
*
*
*
*
*
*
*

4.8
4.8
5.6
6.0
6.5
6.2
7.0
6.8
7.5
7.2
8.2
7.4
8.8

0.058 0.060 0.063 0.065 0.063 0.068 0.075 0.076 0.089 0.077 0.089 0.081 0.100

1200 1400 1400 1400 1600 1600 1600 1600 1600 1600 1600 1600 1600

1000 1000 1000 1200 1400 1400 1600 1600 1600 1600 1600 1600 1600

800 900 900 900 1200 1200 1400 1600 1400 1600 1600 1600 1600

500 500 500 500 600 600 750 750 800 750 800 800 800

500 500 500 500 650 750 900 800 900 800 900 900 900

500 500 500 650 800 900 1000 900 1000 1000 1200 1000 1200

Technical Data

Maximum allowable working tension

kN/m/ply

NB cotton fabric range

Approx. Thickness per ply (mm)

Approx. Weight kg/cm/ply/mtr.

Mechanical fasteners

Vulcanised splice

Screw take up

Gravity take up

Screw take up

Gravity take up

28 oz
32 oz
34 oz
36 oz
42 oz
48 oz

1.25
1.40
1.30
1.50
1.85
2.00

0.012
0.013
0.016
0.016
0.019
0.020

4.4
5.3
5.3
5.6
7.0
8.7

4.7
5.6
5.6
6.5
7.6
9.6

4.7
5.6
5.6
6.5
7.6
9.6

5.3
6.1
6.1
7.0
8.0
10.5