cm400 series_hammer mills

7/27/2019 CM400 Series_hammer Mills

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CM400 serieshammer mills



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Sandvik hammer mill CM420 – hammer heads



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High speedlow sensitivity

SANDVIK HAMMER MILL

Hammer mills are used for primary and secondary crushing of different

types of material in almost all industrial sectors.

FEED MATERIAL

Hard coal and lignite in coal processing and power plants (circulating

fluidized bed), coking coal for the iron and steel industry, limestone and

gypsum rock or other related soft to medium-hard minerals, as well as

various types of salt and fertilizer.

MODE OF OPERATION

The material passes through the feed opening into the striking arc of the

rotating hammers.

The hammers fling the material against the grinding ledges of the grinding

wall, from where it rebounds back against the hammers. This process is

constantly repeated and the impact of the pieces of material being crushed

against each other reduces the material even more finely. This process

ensures that the feed material is crushed to the desired product size.

The material is broken down until it can leave the curved grinding area

through the increasingly narrower gap between the grinding wall and the

rotor. To influence the product size, the circumferential speed of the rotor

and the distance between the grinding walls and the beater circle can be

varied. The rotation direction of the rotor is reversible.

SANDVIK SERVICE

Sandvik’s global network provides reliable and efficient customer sup-

port. Spare parts availability and a comprehensive range of services allow

improved productivity and maximized plant efficiency.

This concept is already implemented in the design phase of the machines.

Fast and easy replacement of components and wear parts, including the

crushing segments or picks and crushing combs, minimizes unplanned

plant downtimes.



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The precisely balanced configuration of the opposing beater arms and

beater heads ensures smooth running of the complete hammer mill without

any vibration. The rotor consists of the rotor shaft, the rotor discs, the

beater arms as well as the beater heads. The beaters are loosely suspended

between the disks by using bolted connections to the shaft. The beater

arms are made of high-quality steel and are easy to service.

The beater heads are wear parts, manufactured from alloy steel, stainless

steel or compound casting and can also be easily replaced.

Hammer mills are designed to be driven at either constant or variable rotor

speeds. Inspection flaps and hinged housing ensure easy maintenance.

ADVANTAGES

– High and constant capacity

– Low space requirement

– High machine availability

– Long lifetime

– Easy replacement of wear and spare parts

through hydraulic opening device

– Broad range of applications

– High reduction ratio

In case one side of the beater heads is worn, the rotor direction can be

reversed by switching the motor accordingly. This will increase the service

life of the beater heads and reduce downtimes during maintenance proce-

dures.

CRUSHING ACTION

– Adjusting the grinding wall to the crushing radius (gap width), the rotor

diameter, the rotor speed (m/s), and the perfect combination of these

variables are major factors in determining the reduction ratio and prod-

uct size

– The grinding wall is fittet with grinding ledges and a replaceable grate in

the lower section to reduce oversized grain

SPECIFICATION

– Feed size: up to 300 mm (12 in)

– Product size: up to <1 mm depending on type

and size of feed material

– Throughput capacity: up to 2500 mpth (2756 stph)

– Reduction ratio: 1 : 30

– Installed power: up to 1800 kW (2414 hp)

Balanced designbalanced power



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2 – hammer heads 3 – grinding walls 4 – hydraulic opening device1 – rotor

1 2

4

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M420 hammer mill

Multiple impacts with beater heads

crush material to required size



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Depending on the application, various configuration options and/or

additional structural elements can be utilized:

HAMMER MILL CM420

The reversible hammer mill CM420 makes it possible to utilize the

beater heads to their optimum by reversing the drive direction without

having to reverse the heads themselves.

– Mechanically adjustable grinding walls to compensate wear and

achieve the desired product size

– Hydraulically adjustable grinding walls for tasks that frequently

vary in relation to product quality and particle size distribution

– Housing design with pressure-shock resistance as a protective

device when processing hazardous feed materials

– Heated grinding walls (heat transfer oil) to improve material flow

when processing materials with a tendency to clog due to moisture

or other characteristics

– Replaceable grate to limit oversized grain for suitable applications

– A number of different drive concepts (v-belt drive, direct drive) are

available. The hammer mill can be driven at either constant or

variable speed

– The vibrating damping platform is another special feature of the

Sandvik hammer mill. The base frame for the typical arrangement

of the machine and crusher drive is made of sectional steel. A set

of dampers is fitted underneath the crusher base frame to ensure a

vibration-insulated arrangement of the complete unit

HAMMER MILL CM410

The CM410 range substitutes the reverse-drive feature for the ability

to handle feed material of larger sizes. By reducing the demands on

screening, or even eliminating one step in the crushing process, the

hammer mill CM410 can be a highly cost effective alternative.

Meeting allyour needs



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Technical datahammer mill v-belt/direct drive

hammer millweight 1

kgU.S. tons

max. feed size mmin

max. capacity2 mtphstph

A1

mmin

B1

mmin

C1

mmin

D1

mmin

E1

mmin

F1

mmin

CM420/08-084200

4.63

120

4.72

35

38.58

800

31.5

800

31.5

250

9.84

2000

78.74

1600

62.99

1200

47.24

CM420/08-104500

4.96

120

4.72

65

71.65

800

31.5

1000

39.37

250

9.84

2000

78.74

1700

66.93

1300

51.18

CM420/08-145200

5.73

120

4.72

120

132.28

800

31.5

1400

55.12

250

9.84

2200

86.61

2200

86.61

1300

51.18

CM420/10-10 58006.39 2509.84 7582.67 100039.37 100039.37 50019.69 2700106.30 197577.76 155061.02

CM420/10-126800

7.5

250

9.84

90

99.21

1000

39.37

1200

47.24

500

19.69

2700

106.30

2175

85.63

1650

64.96

CM420/10-147800

8.6

250

9.84

130

143.3

1000

39.37

1400

55.12

500

19.69

2850

112.20

2175

85.63

1550

61.02

CM420/12-128500

9.37

250

9.84

120

132.28

1200

47.24

1200

47.24

500

19.69

2500

98.43

2175

85.63

1700

66.93

CM420/12-149000

9.92

250

9.84

140

154.32

1200

47.24

1400

55.12

500

19.69

2500

98.43

2350

92.52

1700

66.93

CM420/12-169500

3.86

250

9.84

160

176.37

1200

47.24

1600

62.99

500

19.69

2500

98.43

2550

100.39

1700

66.93

CM420/14-1412500

13.78

250

9.84

150

165.35

1400

55.12

1400

55.12

500

19.69

3250

127.95

2650

104.33

2000

78.74

CM420/14-1815500

17.09

250

9.84

250

275.58

1400

55.12

1800

70.87

500

19.69

3200

125.98

3050

120.08

2000

78.74

CM420/14-22 1800019.84 2509.84 300330.69 140055.12 220086.61 50019.69 3250127.95 3450135.83 200078.74

CM420/14-2620500

22.6

250

9.84

400

440.92

1400

55.12

2600

102.36

500

19.69

3250

127.95

3850

151.57

2000

78.74

CM420/14-3024500

27.01

250

9.84

500

551.16

1400

55.12

3000

118.11

530

20.87

3350

131.89

4550

179.13

2000

78.74

CM420/16-1818000

19.84

250

9.84

300

330.69

1600

62.99

1800

70.87

650

25.59

3600

141.73

3050

120.08

2200

86.61

CM420/16-2220000

22.05

250

9.84

400

440.92

1600

62.99

2200

86.61

600

23.62

3600

141.73

3450

135.83

2200

86.61

CM420/16-2623000

25.35

250

9.84

500

551.16

1600

62.99

2600

102.36

600

23.62

3600

141.73

3850

151.57

2200

86.61

CM420/16-3025500

28.11

250

9.84

600

661.39

1600

62.99

3000

118.11

600

23.62

3600

141.73

4250

167.32

2200

86.61

CM420/18-2832500

35.83

250

9.84

650

716.50

1800

70.87

2800

110.24

600

23.62

3600

141.73

4250

167.32

2450

96.46

CM420/18-3237500

41.34

250

9.84

700

771.62

1800

70.87

3200

125.98

600

23.62

3600

141.73

4800

188.98

2450

96.46

CM420/18-3642500

46.85

250

9.84

750

826.73

1800

70.87

3600

141.73

600

23.62

3600

141.73

5200

204.72

2450

96.46

1 depends on scope of supply2 based on coal and

product size ≤ 10 mm/0.39 in

A

F

E

C

B

D

F

C

B

E

D



S a n d v i k i s a r e g i s t e r e d t r a d e m a r k o f t h e S a n d v i k G r o u p .

© 2

0 0 9 S a n d v i k .

S F M - B - P - C

M

P e r f o r m a n c e i s b a s e d o n i d e a l c o n d i t i o n s .

S a n d v i k r e s e r v e s t h e

r i g h t t o a m e n d s p e c i fi c a t i o n s w i t h o u t n o t i c e .

Sandvik is a high-technology engineering group with world-

leading positions in selected areas – tools for metal working,

advanced materials technology, and mining and construction.

We employ more than 50000 people and are represented in

130 countries.

Sandvik Mining and Construction represents one third of the

overall Sandvik Group and serves a broad range of customers in

construction, mineral exploration, mining and bulk materials

handling. Our construction expertise covers quarrying, tunnelling,

demolition, recycling and other civil engineering applications.

Our mining products and services support customers on the

surface and underground including coal, iron, copper and

gold mining.

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cm400 series_hammer mills

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