Studi Kasus Audit Maintenance Belt Conveyor dan Whell loader Di Pabrik Kertas (Pulp) PT TOBA PULP LESTARI Tbk.

LAMPIRAN 1
Harga Koefisien gesek μ dan ���
Type of pulley
and
atmospheric
condition

180°

� �� for wrap angles �, deg and radians
210°

240°

300°

360°

400°

480°

3,14

3,66

4,19

5,24

6,28

7,0

8,38

Friction
factor μ

Cast iron of
steel pulley and

very humid
(wet)
atsmosphere,
dirty

0,1

1,37

1,44

1,52

1,69

1,87

2,02

2,32

Wood or rubber
lagged pulley
and humid
atmosphere,
dirty

0,15

1,60

1,73

1,87

2,19

2,57

2,87

3,51

Cast iron or
steel pulley and
humid
atmosphere,
dusty

0,20

1,87

2,08

2,31

2,85

3,51

4,04

5,34

Cast iron or
steel pulley dry
atmosphere;
dusty

0,30

2,56

3,00

3,52

4,81

6,59

8,17

12,35

Wood lagged
pulley and dry
atmosphere ;
dusty

0,35

3,00

3,61

4,33

6,25

9,02

11,62

18,78

Rubber lagged
pulley and dry
atmosphere;
dusty

0,45

3,15

4,33

5,34

8,12

12,35

16,41

28,56

Universitas Sumatera Utara

LAMPIRAN II
Karakteristik Material Angkut
SR
No

Material

Average
Bulk Density
(t=1000kg)

Lb/ft t/m3

Angle
of
surcharge
(deg)

Mak Rec
Conveyor
slope
(deg)

Abrasiveness

.......

1

Acid phospate

60

0,98

10

13

A2

2

Alum

50

0,80

25

22

A1

3
4
5
6
7

55
54
50
45
50

0,90
0,90
0,80
0,70
0,80

10
20
10
25
10

12
17
10
23
10

A3
-

8
9
10
11
12
13
14
15
16
17
18
19
20

Alumina
Alumina Sulphate
Ammonium chloride
Ammonium Nirate
Ammonium
Sulphate,granular
Asbestos one or rook
Asbestos, shred
Ashes, coal, dry
Ashes, coal, wet
Ashes, fly
Ashes, gas product, wet
Asphall
Bagasse
Bark, wood, reluse
Barley
Baryles, powdered
Bauxite, ground, dry
Bauxite, mine run

80
23
37
47
45
75
82
8
15
38
130
88
85

1,30
0,37
0,60
0,75
0,70
1,20
1,30
0,13
0,24
0,60
2,10
1,10
1,36

20
30
25
25
30
30
30
30
30
10
10
20
20

18
30
23
25
23
28
30
30
27
12
15
18
17

A1
A3
A1
A1
A3
A3
A1
A2
A1
A2
-

21

Bauxite, crushed, 3inch

80

1,30

20

20

A3

Universitas Sumatera Utara