Buffer Seal Set R34

DESCRIPTION

Buffer seal R34 is two-piece rod seal set consisting of profile ring made of polyurethane and an back-up ring. This seal is always used as primary rod seal in a sealing systems together with u-ring. Space between primary and secondary seal is without pressure.

APPLICATION
Specially as part of sealing system, buffer seal
Standard cylinders
Mobile hydraulics
Machine tools
Injection molding machines
Earth moving equipment
Agricultural machinery

MATERIAL

Standard material
Material Code SU512
Material Base Polyurethane 94 Shore A
Color Dark blue
Back-up ring material Polyacetal resine (POM)

OPERATING CONDITIONS

Pressure, Speed
Working pressure, P 40 MPa
Running speed, v 0,5 m/s

Medium, Working Temperature
Material Code SU512
Hydraulic oils: HL, HLP -30.. +110 ˚C
HFA, HFB fluids +5 … +60 oC
HFC fluids -30 … +40 °C
Water +5 … +50 oC
Mineral greases -30 … +110 °C

DESIGN RECOMMENDATION

Max. permissible gap dimension, emax
Max pressure
 L=6,3 L=8,1
16 Mpa 0,50 0,60
26 Mpa 0,40 0,50
32 Mpa 0,35 0,40
40 Mpa 0,30 0,40
Surface quality*
Surface roughness Ra Rmax
Sliding surfaces 0.05 .. 0,3μm ≤ 2,5 μm
Groove base ≤ 1.6 μm ≤ 6.3 μm
Groove flanks ≤ 3 μm ≤ 15 μm

*Contact area Mr = 50% to 90% at cutting depth c=Rz/2 and reference line Cref=0%

Ød
ØD
H
L
S
Material
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Ød
ØD
H
L
S
C
R1
Material
Order code
40
55.1
5.9
6.3
7.55
5.5
1.2
SU512
R34-209041
50
65.1
5.9
6.3
7.55
5.5
1.2
SU512
R34-209042
55
70.1
5.9
6.3
7.55
5.5
1.2
SU512
R34-209043
56
71.1
5.9
6.3
7.55
5.5
1.2
SU512
R34-209044
60
75.1
5.9
6.3
7.55
5.5
1.2
SU512
R34-209045
63
78.1
5.9
6.3
7.55
5.5
1.2
SU512
R34-209046
70
85.1
5.9
6.3
7.55
6
1.2
SU512
R34-209041
75
90.1
5.9
6.3
7.55
6
1.2
SU512
R34-209048
80
95.1
5.9
6.3
7.55
6
1.2
SU512
R34-209049
85
100.1
5.9
6.3
7.55
6
1.2
SU512
R34-209050
90
105.1
5.9
6.3
7.55
6
1.2
SU512
R34-209051
95
110.1
5.9
6.3
7.55
6
1.2
SU512
R34-209052
100
115.1
5.9
6.3
7.55
6
1.2
SU512
R34-209053
105
120.1
5.9
6.3
7.55
6
1.2
SU512
R34-209054
110
125.1
5.9
6.3
7.55
6
1.2
SU512
R34-209055
115
130.1
5.9
6.3
7.55
6
1.2
SU512
R34-209056
120
135.1
5.9
6.3
7.55
6
1.2
SU512
R34-209057
125
140.1
5.9
6.3
7.55
6
1.2
SU512
R34-209058
130
145.1
5.9
6.3
7.55
6
1.2
SU512
R34-209059
140
155.1
5.9
6.3
7.55
6
1.2
SU512
R34-209060
150
165.1
5.9
6.3
7.55
6
1.2
SU512
R34-209061
160
175.1
5.9
6.3
7.55
6
1.2
SU512
R34-209062
170
185.1
5.9
6.3
7.55
6
1.2
SU512
R34-209063
180
195.1
5.9
6.3
7.55
6
1.2
SU512
R34-209064
200
220.5
7.6
8.1
10.25
7.50
2
SU512
R34-209065