8
FluidConnectors
Parker Hannifin Corporation
Tube Fittings Division
Columbus, OH
Bulletin 4390-974250
Cut 250 Saw Use and Maintenance Manual
12
8.4 — Six-monthly maintenance
• Change the oil in the reduction unit using oil type GEARCO
85W-140 by NATIONAL CHEMSERACH or MOBIL
GLYCOLE 30 or KLUBER SINTHESO 460 EP or an equiva-
lent oil, proceed as follows:
• Remove the connecting plug
from the electric box and
un-screw the head moving
lever.
• Drain the old oil from the cap
at the side (1).
• Pour in new oil up to the
mark (1), through the lever
fixing hole, keeping the head
in a horizontal position (2).
• Reassemble all the parts.
• Check continuity of the equi-
potential protection circuit.
8.5 — Oils for lubricating coolant
Considering the vast range of products on the market, the
user can choose 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 — Special maintenance
Special maintenance operations can be carried out by skilled
personnel, or contact Parker TFD or distribution personnel.
9
Material Classifiation and
Choice of Tool
Since the aim is to obtain excellent cutting quality, the various
parameters such as
hardness of the material, shape and thick-
ness, transverse cutting section
of the part to be cut,
choice of
the type of cutting blade, cutting speed
and
control of head
descent
, must be suitably combined.These specifications must
therefore be combined in a single operating condition accord-
ing to practical considerations and common sense, so as to
achieve optimum conditions.
We therefore advise you always to choose original spare
blades that guarantee superior quality and performance.
9.1 — Definition of materials
The following table lists the characteristics of the materials to
be cut.
TYPES OF STEEL CHARACTERISTICS
USE
I
UNI
D
DIN
F
AF NOR
GB
SB
USA
AISI-SAE
Hardness
BRINELL
HB
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
XC20
XC42H1
----
XC55
060 A 20
060 A 40
----
060 A 62
1020
1040
1050
1060
198
198
202
202
93
93
94
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
nitriding
35CrMo4
39NiCrMo4
41CrAlMo7
34CrMo4
36CrNiMo4
41CrAlMo7
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
Steel for
bearings
100Cr6 100Cr6 100C6 534 A 99 52100 207 95 690÷980
Tool steel
52NiCrMoKU
C100KU
X210Cr13KU
58SiMo8KU
56NiCrMoV7
C100W1
X210Cr12
----
----
----
Z200C12
Y60SC7
----
BS 1
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
----
Z5CN18.09
----
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-CuAl11Fe4Ni4 UNI 5275
Special manganese/silicon brass G-CuZn36Si1Pb1 UNI5038
Manganese bronze SAE43 - SAE430
Phosphor bronze G-CuSn12 UNI 7013/2a
220
140
120
100
98
77
69
56,5
620÷685
375÷440
320÷410
265÷314
Cast iron
Gray pig iron G25
Spheroidal graphite cast iron GS600
Malleable cast iron W40-05
212
232
222
96
100
98
245
600
420
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