Material
|
Material
|
|
Polyurethane HPU82 shore
|
|
Polyurethane HPU95A
|
Introduction
K839 is a standard dust wiper. It is used for rod seals. K839 is simple dust seal with sealing system. It is including 2 lips in order to exclude dust and moisture from entering into cylinder and collect passing fluid from rod seal.
K839 is a double-acting wiper manufactured from tough, wear resistant polyurethane (HPU). Its robust outer wiper lip excludes contaminants from the hydraulic system, and the internal wiper lip collects fluids that bypass the primary rod seal, to give dry rod performance.
The K839 profile can be used as a heavy to light duty wiper. When used in high pressure applications in conjunction with the proper KOLBEN rod seals, the K839 compliments the sealing system by providing an additional beveled sealing lip, yielding excellent film-breaking and the driest rod sealing available. These dual acting features also enable it to be used by itself in low pressure applications as both the rod seal and the wiper. Knife-trimmed sealing lips ensure the best possible film breaking.
The wiper is precision moulded in high performance polyurethane – HPU for maximum wear resistance, and is designed to exclude dirt and moisture from entering the cylinder and to collect traces of fluid passing the rod seal.
|
Material
|
Power-transmission fluid
|
Temperature ⁰C
|
Speed
|
Pressure
|
Max. Gap F
|
|
Polyurethane
HPU95
Or HPU82
|
Mineral Oil
|
-45 - +110
|
≤ 1,0m/s
|
|
F ≤ 0,6 mm
|
|
HFC Water Glycol
|
-30 - +60
|
|
|
F ≤ 0,5 mm
|
|
HFA 5/95 Water base fluid, Water
|
+5 - +60
|
|
|
F ≤ 0,4 mm
|
|
|
|
|
|
Chamfers & Rad (mm)
|
|
Tolerance
|
Surface Finishing
|
|
S ≤
|
4
|
5
|
7.5
|
10
|
12.5
|
15
|
20
|
|
Rod
|
Piston
|
µm Ra (for rod only) µm Rt
|
|
C ≥
|
3
|
3.5
|
5
|
6.5
|
7
|
8
|
10
|
ø d
|
f9
|
js11
|
0,1-0,4
|
≤ 4
|
|
r1 ≤
|
0.2
|
0.4
|
0.8
|
0.8
|
1.2
|
1.6
|
1.6
|
ø D
|
Js11
|
H9
|
≤ 1,6
|
≤ 10
|
|
r2 ≤
|
0.4
|
0.8
|
1.2
|
1.2
|
1.6
|
2.4
|
2.4
|
L
|
+0,25 0
|
+0,25 0
|
≤ 3,2
|
≤ 16
|
|
NAME
|
MODEL
|
MATERIAL
|
d(f8)
|
D(H10)
|
D1(H11)
|
h(-0/+0.2)
|
H
|
|
K839
|
K839 14*22*4.8/7
|
PU
|
14
|
22
|
17
|
4.8
|
7
|
|
K839
|
K839 18*26*4.8/7
|
PU
|
18
|
26
|
21
|
4.8
|
7
|
|
K839
|
K839 20*28*4.8/7
|
PU
|
20
|
28
|
23
|
4.8
|
7
|
|
K839
|
K839 22.4*30.4*4.8/7
|
PU
|
22.4
|
30.4
|
25.4
|
4.8
|
7
|
|
K839
|
K839 25*33*4.8/7
|
PU
|
25
|
33
|
28
|
4.8
|
7
|
|
K839
|
K839 28*36*4.8/7
|
PU
|
25
|
36
|
28
|
4.8
|
7
|
|
K839
|
K839 30*38*5.8/8
|
PU
|
28
|
38
|
31
|
5.8
|
8
|
|
K839
|
K839 31.5*39.5*5.8/8
|
PU
|
31.5
|
39.5
|
34.5
|
5.8
|
8
|
|
K839
|
K839 32*40*5.8/8
|
PU
|
32
|
40
|
35
|
5.8
|
8
|
|
K839
|
K839 35*43*5.8/8
|
PU
|
35
|
43
|
38
|
5.8
|
8
|
|
K839
|
K839 35.5*43.5*5.8/8
|
PU
|
35.5
|
43.5
|
38.5
|
5.8
|
8
|
|
K839
|
K839 38*46*5.8/8
|
PU
|
38
|
46
|
41
|
5.8
|
8
|
|
K839
|
K839 40*48*5.8/8
|
PU
|
40
|
48
|
43
|
5.8
|
8
|
|
K839
|
K839 45*53*5.8/8
|
PU
|
45
|
53
|
48
|
5.8
|
8
|
|
K839
|
K839 50*58*5.8/8
|
PU
|
50
|
58
|
53
|
5.8
|
8
|
|
K839
|
K839 53*61*5.8/8
|
PU
|
53
|
61
|
56
|
5.8
|
8
|
|
K839
|
K839 55*63*5.8/8
|
PU
|
55
|
63
|
58
|
5.8
|
8
|
|
K839
|
K839 56*64*5.8/8
|
PU
|
56
|
64
|
59
|
5.8
|
8
|
|
K839
|
K839 60*68*5.8/8
|
PU
|
60
|
68
|
63
|
5.8
|
8
|
|
K839
|
K839 63*71*5.8/8
|
PU
|
63
|
71
|
66
|
5.8
|
8
|
|
K839
|
K839 65*73*5.8/8
|
PU
|
65
|
73
|
68
|
5.8
|
8
|
|
K839
|
K839 70*80*6.8/10
|
PU
|
70
|
80
|
73
|
6.8
|
10
|
|
K839
|
K839 75*85*6.8/10
|
PU
|
75
|
85
|
78
|
6.8
|
10
|
|
K839
|
K839 80*90*6.8/10
|
PU
|
80
|
90
|
83
|
6.8
|
10
|
|
K839
|
K839 85*95*6.8/10
|
PU
|
85
|
95
|
88
|
6.8
|
10
|
|
K839
|
K839 90*100*6.8/10
|
PU
|
90
|
100
|
93
|
6.8
|
10
|
|
K839
|
K839 95*105*6.8/10
|
PU
|
95
|
105
|
98
|
6.8
|
10
|
|
K839
|
K839 100*110*6.8/10
|
PU
|
100
|
110
|
103
|
6.8
|
10
|
|
K839
|
K839 110*125*8.5/13
|
PU
|
110
|
125
|
113
|
8.5
|
13
|
|
K839
|
K839 112*122*6.8/10
|
PU
|
112
|
122
|
115
|
6.8
|
10
|
|
K839
|
K839 120*130*6.8/10
|
PU
|
120
|
130
|
123
|
6.8
|
10
|
|
K839
|
K839 125*138*7.8/11
|
PU
|
125
|
138
|
128
|
7.8
|
11
|
|
K839
|
K839 130*143*7.8/11
|
PU
|
130
|
143
|
133
|
7.8
|
11
|
|
K839
|
K839 136*149*7.8/11
|
PU
|
136
|
149
|
139
|
7.8
|
11
|
|
K839
|
K839 140*153*7.8/11
|
PU
|
140
|
153
|
143
|
7.8
|
11
|
|
K839
|
K839 145*158*7.8/11
|
PU
|
145
|
158
|
148
|
7.8
|
11
|
|
K839
|
K839 150*163*7.8/11
|
PU
|
150
|
163
|
153
|
7.8
|
11
|
|
K839
|
K839 160*174*7.8/11
|
PU
|
160
|
174
|
163
|
7.8
|
11
|