V-Seal Set R02
DESCRIPTION (1) – Pressure ring is a base ring that hold the V-rings in set and with them provide effective sealing. Pressure ring is manufactured in fabric impregnated with rubber (2) – V-Ring is manufactured in fabric impregnated with rubber (3) – Two V-rings are made in rubber for higher sealing efficiency (4) – Support ring are made in rubber reinforced fabric or in polyacetal resine – POM. In the packaging set Support ring distribute axial force energizing each individual component and pressed them into positive contact with the rod and gland surfaces and provides the sealing leverage V-Seal Set R02 is reliable even under exstreme operating conditions and has excellent behavior in harsh conditions. R02 has exceptional wear
Chevron seal set R02 for sealing piston rods. Set includes seven pieces (n=7): Support ring, two Rubber rings, three Roof-shaped rubber-fabric reinforced rings and Pressure ring
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resistance and due to pre- load adjustment capability has long service life.
APPLICATION
Mining equipment
Injection molding machines
Presses
Escavator cylinders
Steel mill cylinders
Water hydraulics
Scrap cutters
Marine hydraulics
| MATERIAL | ||
|---|---|---|
| Material Set Code | SN107 | SF105 |
| Rubber | NBR | FPM |
| Fabric | Cotton | Cotton |
Alternate materials:
For very low temperature applications up to -60 C, or excellent oils-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 | SN107 | SF105 |
| Hydraulic oils: HL, HLP | ‘-30.. +100 ˚C | ‘-15.. +150 ˚C |
| HFA, HFB fluids | ‘+5..+60 °C | ‘+5..+60 °C |
| HFC fluids | ‘-30..+60 °C | ‘-15.. +60 ˚C |
| HFD fluids | – | ‘-15.. +150 ˚C |
| Water | ‘+5..+100 °C | ‘+5..+ 80 ˚C |
| Mineral greases | ‘-30..+100°C | ‘-15.. +150 ˚C |
| Tolerances | ||
|---|---|---|
| Ød | Clearance fit, emax | ØD |
| … 80 | H9/f8 | H11 |
| > 80 … 120 | H8/f8 | H11 |
| > 120 … 500 | H8/f7 | H11 |
| > 500 … 630 | H8/f7 | H10 |
| > 630 … 800 | H8/f7 | H10 |
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*Contact area Mr = 50% to 90% at cutting depth c=Rz/2 and reference line Cref=0% Adjustable housings have the advantage of allowing adjustments of the axial force applied to the seal set. After a long period of operation and the occurrence of seal wear, this type of housing allows tightening of the seal and prolonging its service life. For adjustable housings, it is recommended to extend the installation site by 2.5% and the possibility of subsequent adjustment of 7.5% from the “L” dimension, by installing a washer.
Surface quality*
Surface roughness
Ra
Rmax
Sliding surfaces, a
0,05 to 0,3μm
≤ 2,5 μm
Groove base, b
≤ 1,6 μm
≤ 6,3 μm
Groove flanks, d
≤ 3,0 μm
≤ 15 μm
Chamfer, f
≤ 4,0 μm
≤ 16 μm
Gland length, L