Useful Conveyor Data

SECTION 1 - MECHANICAL CONVEYING EQUIPMENT

INDEX

STANDARD NO.

CM/0900/

BB1

Maximum belt speeds

 

BB2

Maximum lump size

 

BC1

Conveyor chutes

BC2

Discharge chute openings

BC3

Chute discharge opening

BC4

Langlaagte chute

BC5

Adjustable discharge opening

BC6

Flop gate

BC7

Chute liner materials

BC8

Skirtboard details

BC9

Bifurcated head chute

 

BF1

Fabric belt types

BF2

Fabric belt strength

BF3

Fabric belt width / troughing angles / piles

BF4

Fabric belt pulley diameters

BF5

Fabric belt tension

BF6

Fabric belt impact index

BF7

Fabric belt top cover gauge

BF8

Fabric belt carcass mass

BF9

Fabric belt take-up travel

 

BI1

Idler spacing

BI2

Idler transition distance

BI3

Stringer centres

 

BS1

Steel belt tension

BS2

Steel belt pulley diameters

BS3

Steel belt mass

BS4

Steel belt number of cables

BS5

Steel belt splicing length

BS6

Steel belt cover selection

 

CA1

Curved belt geometry, set-out points

CA2

Inclined belt set-out points

CA3

Change of incline per idler

 

CB1

Conveyor Bearing Centres

CB2

Plummer block selection chart

CB4

Belt rating chart

 

CC1

Areas and capacities - troughed belts

CC1A

Capacities comparison tables - troughed belts

CC2

Area and capacities - flat belts

CC2A

Capacity comparison tables - flat belts

CC5

Chute inspection door

 

CI1

Conveyor idlers

 

CS3

Scraper inspection doors

 

CT1

Trajectories

 

LA1

Ringfeder locking assemblies

 

MC1

Material characteristics

 

PB1

Plummer blocks - SN, SNA, SD series

PB/1

Plummer blocks - SDX series

PB1A

Plummer blocks seals, etc.

PB1B

Plummer blocks protective collars

PB1C

Plummer blocks seals, collar reference chart

PB2

Plummer blocks soleplates

PB3

Plummer blocks selection chart

PB4

Plummer blocks mounting

 

SB1

Shoulder bolts - sliding joints

 

TW1

Pigtail (trip wires)

Max. Belt Speed (m/s)

Following tables indicate the recommended maximum belt speeds for different belt widths, material classifications (table 1) and for different conveyor applications (table 2).

Table 1

Belt Width
(mm)

Material

Free Flowing 
(Grain, etc.)

Run of 
Mine

Abrasive Coarse, 
Lumpy

 Fine 

300

2,5

1,5

1,5

2,0

450

2,5

1,5

1,5

2,5

500

3,0

1,5

1,8

2,0

600

3,0

1,8

2,0

2,5

750

3,6

1,8

2,2

3,0

900

4,0

1,8

2,2

3,0

1050

4,0

2,0

2,5

3,5

1200

4,5

2,0

2,5

3,5

1350

4,5

2,0

2,5

3,5

1500

5,0

2,3

3,0

4,0

1800

5,0

2,3

3,0

4,0

2100

5,0

2,6

3,5

4,5

2400

5,0

2,6

3,5

4,5

Table 2

Material

 Belt Speed  
(m/s)

 Packages

0,3 - 1,0

 Wood & Pulp

1,5 - 2,0

 Feeders

0,3 - 0,7

 Portable Conveyors

1,3 - 2,1

 Snaking Conveyors

1,8 - 2,5

 Shuttles

1,8 - 2,5

 Trippers

2,0 - 3,0

 Wheel Excavators

2,0 - 3,0

 Picking Belts

0,3 - 0,5

 Belts Unloading by Ploughs

0,5 - 1,0

 Underground Conveyors

1,3 - 2,5

 Primary Crusher Discharge Conveyors 

2,0 - 2,5

 Belt Feeders

0,5 - 1,0

 Filter Discharge Conveyors

0,5 - 1,0

Max. Lump Size

Table indicates the maximum recommended lump sizes for different belt widths, based on material size-distribution.

 

Belt Width 
(mm)

Lump Size (mm)

Uniform

Mixed with 
90% Fines

300

50

100

450

75

125

500

100

150

600

125

200

750

150

250

900

175

300

1000

200

350

1200

250

400

1350

275

450

1500

300

500

1800

350

600

2100

400

700

2400

500

800

Chute Dimensions

Table indicates the dimensions of discharge chutes' opening for different belt widths

 

 

BELT WIDTH (mm)
                     

Standard Opening

600

750

900

1050

1200

1350

1500

1800

2100

--

Large Opening

--

600

750

900

1050

1200

1350

1500

1800

2100

Chute Opening Area (F) (m2) 

 0,162 

 0,248 

 0,365 

 0,504 

 0,666 

 0,851 

 1,058 

 1,458 

 2,011 

 2,664 

 

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FABRIC BELTING
MASS AND THICKNESS OF CARCASS ONLY

No. of Plies

Mass Thickness

Belt Class

200

250

315

400

500

630

800

1000

1250

1600

2000

2500

2

All - kg/m2
Nylon - mm
E.P. - kg/m2
- mm

3,3
2,8
3,4
2,4

3,8
3,3
3,6
2,8

4,8
4,3
5,3
4,0

4,9
4,6
5,4
4,0

6,3
5,6
6,2
4,9

6,3
5,6
6,9
5,2

-
-
8,1
5,9

-
-
9,8
6,5

-
-
-
-

-
-
-
-

-
-
-
-

-
-
-
-

3

All - kg/m2
Nylon - mm
E.P. - kg/m2
- mm

4,4
4,0
4,4
3,0

4,4
4,0
4,4
3,0

5,4
4,0
4,4
3,0

5,0
4,6
4,7
3,6

5,0
4,6
5,7
3,9

5,5
5,4
7,0
5,4

7,6
7,7
7,8
5,9

7,6
7,7
7,8
5,9

-
-
10,2
7,3

-
-
12,1
7,6

-
-
-
-

-
-
-
-

4

All - kg/m2
Nylon - mm
E.P. - kg/m2
- mm

 

 

6,2
5,5
6,1
4,6

6,2
5,5
6,1
4,6

7,0
6,3
6,5
5,2

7,0
6,3
7,9
5,6

7,1
6,1
7,2
5,9

10,3
9,9
7,6
6,8

10,3
9,9
8,6
7,4

-
-
12,4
10,4

-
-
14,9
10,8

-
-
-
-

5

All - kg/m2
Nylon - mm
E.P. - kg/m2
- mm

 

 

 

8,0
7,0
7,9
6,0

8,0
7,0
7,9
6,0

8,9
8,0
8,4
6,7

8,9
8,0
8,2
6,6

9,0
7,6
9,1
7,4

13,1
12,0
9,6
8,4

13,1
12,0
10,9
9,1

-
-
15,8
12,8

-
-
19,0
13,5

6

All - kg/m2
Nylon - mm
E.P. - kg/m2
- mm

 

 

 

 

9,8
8,4
9,6
7,4

9,8
8,4
9,6
7,4

10,9
9,7
10,2
8,2

10,6
9,0
10,7
7,0

10,6
9,0
11,7
10,0

15,8
14,2
13,2
10,9

15,8
14,2
13,2
10,9

-
-
19,2
14,3

????????????????????????????????

 

Table recommends take-up travel distance for Plylon fabric belts as a percentage of pulley center distance.

PLYLON
FABRIC

TYPE OF
TAKE-UP

FASTENED SPLICE

VULCANISED SPLICE

100% of 
Rated tension

75% or less of
Rated Tension

100% of
Rated Tension

75% or less of
Rated Tension

All Nylon

Screw
Auto

1,5%
2,0%

1,0%
1,5%

4,0%
2,5% + 0,6m

3,0%
2,5% + 0,6m

E.P.

Screw
Auto

1,5%
1,0%

1,0%
1,0%

4,0%
1,5% + 0,6m

3,0%*
1,5% + 0,6m

Note:-
'*' Only short endless feeder belts and the like would normally be vulcanised on conveyors with screw take-up. 

Idler Spacing

Table indicates typical troughing idler spacing / pitch for various material bulk densities and belt widths

BELT WIDTH W (mm)

BULK DENSITY (tons/m3.)

Under 0,8

0,8 to 1,6

Over 1,6

600
750
900
1050

1,70
1,59
1,51
1,44

1,43
1,32
1,23
1,17

1,27
1,15
1,07
1,01

1200
1350
1500
1800
2100

1,40
1,35
1,31
1,24
1,19

1,12
1,08
0,04
0,98
0,93

0,97
0,93
0,90
0,84
0,80

Transition Lengths

Table 1 indicates the recommended transition distance for half-troughed conveyor applications.
Table 2 indicates the recommended transition distance for full-troughed conveyor applications.
Table 3 indicates the number and location transition idlers.

Table 1 - Transition distance for half-trough depth.

 

TROUGH ANGLE (deg.)

PERCENTAGE OF RATED TENSION

FABRIC BELTS

STEEL CABLE BELTS

20

MORE THAN 90
60 to 90
LESS THAN 60

0,9w
0,8w
0,6w

2,0w
1,6w
1,0w

35

MORE THAN 90
60 to 90
LESS THAN 60

1,6w
1,2w
0,9w

3,4w
2,6w
1,8w

45

MORE THAN 90
60 to 90
LESS THAN 60

2,0w
1,6w
1,2w

4,0w
3,2w
2,2w

Note:-
All conveyors using troughing idlers with angles greater than 20 adjacent to terminal pulleys shall have transition idlers between the given terminal pulley and the nearest standard idler.

Table 2 - Transition distance for full-trough depth.

TROUGH ANGLE (deg.)

PERCENTAGE OF RATED TENSION

FABRIC BELTS

STEEL CABLE BELTS

20

MORE THAN 90
60 to 90
LESS THAN 60

1,8w
1,6w
1,2w

4,0w
3,2w
2,0w

35

MORE THAN 90
60 to 90
LESS THAN 60

3,2w
2,4w
1,8w

6,8w
5,2w
3,6w

45

MORE THAN 90
60 to 90
LESS THAN 60

4,0w
3,2w
2,4w

8,0w
6,4w
4,4w

Note:-
All conveyors using troughing idlers with angles greater than 20 adjacent to terminal pulleys shall have transition idlers between the given terminal pulley and the nearest standard idler.

Table 3 - Number and Location of transition idlers

NUMBER OF TRANSITION IDLERS

FIRST

SECOND

THIRD

FOURTH

1

0,33Y

 

 

 

2

0,17Y

0,50Y

3

0,10Y

0,30Y

0,60Y

4

0,07Y

0,20Y

0,40Y

0,67Y

Stringer Widths

Table indicates standard stringer widths for different belt widths.

 

BELT WIDTH 
(mm)

PULLEY FACE 
WIDTH 
(mm)

STRINGER BOLT HOLE 
CENTRE DISTANSES

STANDARD 
RANGE 
(mm)

WIDE 
RANGE 
(mm)

300

400

 

 

400

500

634

-

450

550

686

-

500

600

736

-

600

700

838

965

750

900

990

1118

900

1050

1144

1270

1050

1200

1296

1422

1200

1350

1448

1575

1350

1500

1600

1727

1500

1700

1752

1880

1650

1850

1904

2030

1800

2000

2058

2184

2100

2300

2362

2489

2400

2600

 

 

NOTE: This table agrees with the provisions of SABS 1313-1980 with respect to "standard" range centres only.
"Wide range" centres are not mentioned in this specification.