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

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

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
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