Luna 20097-0404, Manual, Page: 33 / 92

32
8.3 Monthly maintenance
- Check t he tightening of the motor flywheet screws.
- Check that the blade guide bearings on the heads are perfeet running
condition.
- Check the tightening of the screws of the gearmotor, pump
and !lccident proteetlon guarding.
8.4 Six-monthly maintenance
REDUCTION UNIT
- The worm drive gear box mounted on the rnachine Is
malntenance-free guaranteed by its manufacture.
- Continuity test of the equlpotential proteclion circuit.
8.5 Oils for lubricating coolant
Considering the vast range of products on the market,the user can ehoase
the one most suited to his own requirements, using as reference the type
SHELL LUTEM OIL ECO.
THE MINIMUM PERCENTAGE OF OIL DILUTED IN WATER
IS 8-10 %
8.6 Oil disposal
The disposal of these products is controlled by strict regula tions. Please
see the chapter on ”Machine dimensins Transport- Installation in the sec-
tion on Dismantling.
8.7 Special maintenance
Special maintenance operations must be carried out by skilled personnel.
However,we advise contactin their dealer and/or importer. Also the reset
of proleelive and safety equipment and devices.of the reducer, the motor,
the motor pump and electric components is to be considered extra-
ordi nary maintenance.
9 MATERIAL CLASSIFICATION AND CHOICE
OF TOOL
Since the air is to obtain excellent cutting quality,the vari ous parameters
such as hardness of the material,shape and thickness,transverse culting
seetian of the part to be cul, selection of the type of cutting blade, culting
speed and centroi of saw frame lowering. These specifi cations must
therefore be harmoniously combined in a sin gle operating condition
according to practicalconsiderations and common sense, so as to achieve
an optimum condition rnachine when here are many variations in the job
to be performed.
The various problems thai crop up from time to time will be solved more
e asily it the operator has a good knolede of.-these specif ications.
WE THEREFORE RECOMMEND YOU TO ALWAYS USE GENUINE
SPARE BLADES THAT GUARANTEE SUPERIOR QUAL ITY AND
PERFORMANC E.
9.1 Definition of materials
The table at the foot of th page lists the characterisstics of the materials to
be cut, so as to ehoase the right toolto use..
9.2 Selecting blade
First of all the pitch of the teeth must be chosen, in the other words, the
number of teeth per inch(25.4mm) suitable for thematerial to be cul,
accordintg to these criteria:
- parts with a!hin and/or variable seetian such as profiles, pipes and
plate, need close toothing,so thai the number of teeth used simultan
eausly in cutting is from 3 to 6;
- parts with !arge t ransvarse seelians and solid seetians need
widely spaced toolhing to allow for the greater volume of the shavings
and better tooth penetration;
- parts made of soft material or plastic (light alloys, mild bronze,
teflon, wood, etc.) also require widely spaced toothing; pieces culin
bundles require combo tooth design.
9.3 Teeth pitch
As already stated,this depends on the following factiors:
- hardness of the material
- dimensions of the section
- thickness of the wall
BLADE TEETH SELECT!ONTABLE
THICKNESS MM Z CONTINUOUS
TOOTH DESIGH
Z COMBO
TOOTH DESIGN
TILL 1,5 14 10/14
FROM 1 T0 2 8 8/12
FROM 2 T0 3 6 6/10
FROM 3 T0 5 6 5/8
FROM 4 T0 6 6 4/6
MORE THAN 6 4 4/6
S = THICKNESS
TYPES OF STEEL CHARACTERISTICS
USE l
UNI
D
DIN
F
AF NOR
GB
SB
USA
AISI-SAE
Hardness
ROCKWELL
HRB
Hardness
ROCKWELL
HRB
R=N/mm2
Construction
steels
Fe360
Fe430
Fe510
St37
St44
St52
E24
E28
E36
—
43
50
—
—
—
116
148
180
67
80
88
360+480
430+560
510+660
Carbon
Steels
C20
C40
C50
C60
CK20
CK40
CK50
CK60
E24
E28
E36
060 A 20
060 A 40
—
060 A 62
1020
1040
1050
1060
198
198
202
202
93
93
93
94
540+690
700+840
760+900
830+980
Spring steels 50CrV4
60SiCr8
50CrV4
60SiCr7
50CV4
—
735 A 50
—
6150
9262
207
224
95
98
1140+1330
1220+1400
Alloyed steels
for hardening and
tempering and for
nitnding
35CrMo4
39NiCrMo4
41CrAIMo7
34CrMoO4
36CrNiMoO4
41CrAIMo7
35CD4
39NCD4
40CADG12
708 A 37
—
905 M 39
4135
9840
—
220
228
232
98
99
100
780+930
880+1080
930+1130
Alloyed
casehardening
steels
18NiCrMo7
20NiCrMo2
—
21NiCrMo2
20NCD7
20NCD2
En 325
805 H 20
4320
4315
232
224
100
98
760+1030
690+980
Alloyed for
bearings
100Cr6 100Cr6 100C6 534 A 99 52100 207 95 690+980
Tool steel 52NiCrMoKU
C100KU
X210Cr13KU
58SiMo8KU
56NiCr-
MoV7C100K
C100W1
X210Cr12
—
—
Z200C12
Y60SC7
—
Bs1
BD2-BD3
—
S-1
D6-D3
S5
244
212
252
244
102
96
103
102
800+1030
710+980
820+1060
800+1030
Stainless
Steel
X12Cr13
X5CrNi1810
X8CrNi1910
X8CrNiMo1713
4001
4301
—
4401
—
Z5CN 18.09
—
Z6CDN17.12
—
304 C 12
—
316 S 16
410
304
—
316
202
202
202
202
94
94
94
94
670+885
590+685
540+685
490+685
Copper alloys
Special brass
Bronze
Aluminium copper alloy G-Cuai11Fe4Ni4 UNI 5275
Special manganese/siliconbrass G-CuZn36Si1Pb1 UNI 5038
Manganese bronze SAE43 - SAE430
Phosphor bronze G-CuSn12 UNI7013/2a
220
140
120
100
98
77
69
56.5
620+685
375+440
320+410
265+314
Cast iron Gray pig iron
Spheroidal graphite cast iron
Malleable cast iron
212
232
222
96
100
98
245
600
420
G25
GS60
W40-05