Rod U-Ring Set R16

DESCRIPTION

The Rod U-Seal set R16 has an asymmetric profile with a shortened inner lip and fabric reinforcement on the contact surface.
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APPLICATION
Iron and steel engineering
Special hydraulic cylinders.
Presses
Steel hydraulics
Scrap cutters
Injection molding machines
Industrial wehicles
Mobile hydraulics

MATERIAL

Standard material
Material Set Code SN218 SF266
Material base NBR 80 Shore A FPM 80 Shore A
Fabric Cotton Cotton
Back-up ring Acetal resine (POM) PTFE compound

Advantages of the material:
For very low temperature applications up to -60 C, or excellent medium-rubber compatybility in special applications a few materials are recommended and available on request

OPERATING CONDITIONS

Pressure, Speed
Working pressure, p 40 Mpa
Running speed v 0,5 m/s
Medium, Working Temperature
Material Set Code SN218 SF266
Hydraulic oils: HL, HLP -30.. +100 ˚C -15.. +150 ˚C
HFA, HFB fluids +5..+60 °C –
HFC fluids -30..+60 °C –
HFD fluids – -15.. +150 ˚C
Water +5..+100 °C –
Mineral greases -30..+100°C -15.. +150 ˚C

DESIGN RECOMMENDATION

Max. permissible gap dimension, emax
Max  pressure
 ØD ≤ 80 ØD > 80
16 Mpa 0,60 0,65
26 Mpa 0,50 0,55
32 Mpa 0,45 0,45
40 Mpa 0,35 0,40
Surface quality*
Surface roughness Ra Rmax
Sliding surfaces, a 0,05 .. 0,3μm ≤ 2,5 μm
Groove base, b ≤ 1,6 μm ≤ 6,3 μm
Groove flanks, d ≤ 3,0 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
Material
Order code
90
115
15
16
12.5
6.5
SF266
R16-203051
100
120
12
13
10
6
SF266
R16-203052
100
125
15
16
12.5
6.5
SF266
R16-203053
110
130
12
13
10
6
SF266
R16-203054
115
140
15
16
12.5
6.5
SF266
R16-203055
125
150
15
16
12.5
6.5
SF266
R16-203056
140
160
12
13
10
6
SF266
R16-203057
140
165
15
16
12.5
6.5
SF266
R16-203058
150
180
18
19
15
7.5
SF266
R16-203059
160
185
15
16
12.5
6.5
SF266
R16-203060
170
200
18
19
15
7.5
SF266
R16-203061
180
205
15
16
12.5
6.5
SF266
R16-203062
200
225
15
16
12.5
6.5
SF266
R16-203063
220
250
18
19
15
7.5
SF266
R16-203064
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