B+S RU6
Description
Additional to the machined seals StepsealR 2K and Rimseal for housings due to ISO 7425/2 (rubber energised plastic seals) the U-Cup type RU6 has been developped as an injection molded seal of polyurethane material to fit in the same ISO housings. The integrated NBR O-Ring (only available for series RU62 – RU64) improves the performance at low pressure and low temperature applications. Polyurethan (ZurconR Z04) is a proved material for U-cups due to their good mechanical properties.
Description
Additional to the machined seals Stepseal 2K and Rimseal for housings due to ISO 7425/2 (rubber energised plastic seals) the U-Cup type RU6 has been developped as an injection molded seal of polyurethane material to fit in the same ISO housings. The integrated NBR O-Ring (only available for series RU62 – RU64) improves the performance at low pressure and low temperature applications. Polyurethan (Zurcon Z04) is a proved material for U-cups due to their good mechanical properties.
Type RU6
The U-Cup type RU6 can be installed as a single seal for low to medium duty applications; for sealing systems, the U-Cup RU6 shall be installed mainly as a secondary seal together with the Turcon Stepseal 2K as primary seals.
Method of Operation
The sealing effect of the U-Cup RU6 comes from the intrinsive preload of the seal body and from the compression of the seal lip and the O-Ring during installation. In operation conditions, the radial contact forces are superimposed by the system pressure.
Due to the special design and the integrated O-Ring the RU6 U-Cups have an excellent sealing behavior with and without pressure activation. The short sealing lip gives better friction values compared to common U-Cups.
Advantages
– Very good low pressure sealability
– Simple installation
– Lower friction compared with common U-Cups
– Installation in ISO 7475/2 grooves
– Very low compression set due to O-Ring
Application Examples
- General hydraulic cylinders
- Injection molding machines
- Lift trucks
- Agricultural machines
Technical Data
Operating pressure: Max. 25 MPa (as single element)
Speed: Up to 0.5 m/s
Temperature: Use in mineral oils: -30°C to + 80°C
Media: Mineral oil-based hydraulic fluids.
Important Note:
The above data are maximum values and cannot be used at the same time. e.g. the maximum operating speed depends on material type, pressure, temperature and gap value.
Material
The thermoplastic polyurethane material ZurconR Z04 has a high abrasion resistance, a low compression set and exhibits a high resistance to clearance extrusion.
The integrated O-Ring is an NBR with 70 shore A and a very low compression set.
U-Cup: polyurethane 94 shore A
material code Z04
O-Ring: NBR 70 shore A
material code N
Set: Z04 N
Design and Installation Instructions
The different forms have different grooves, see Table.
|
Groove Diameter | Groove Width | Radius | Part No. | O-Ring Size | |||||
| dN f8/h9 | D1 H10 | L1 +0.2 | r1 | |||||||
| 12,0 | 19,5 | 3,2 | 0,5 | RU6100120 | – | |||||
| 14,0 | 21,5 | 3,2 | 0,5 | RU6100140 | – | |||||
| 16,0 | 23,5 | 3,2 | 0,5 | RU6100160 | – | |||||
| 18,0 | 25,5 | 3,2 | 0,5 | RU6100180 | – | |||||
| 20,0 | 27,5 | 3,2 | 0,5 | RU6100200 | – | |||||
| 20,0 | 31,0 | 4,2 | 0,5 | RU6200200 | 23.47 x 2.62 | |||||
| 22,0 | 29,5 | 3,2 | 0,5 | RU6100220 | – | |||||
| 22,0 | 33,0 | 4,2 | 0,5 | RU6200220 | 25.07 x 2.62 | |||||
| 25,0 | 32,5 | 3,2 | 0,5 | RU6100250 | – | |||||
| 25,0 | 36,0 | 4,2 | 0,5 | RU6200250 | 28.24 x 2.62 | |||||
| 28,0 | 39,0 | 4,2 | 0,5 | RU6200280 | 31.42 x 2.62 | |||||
| 30,0 | 41,0 | 4,2 | 0,5 | RU6200300 | 34.59 x 2.62 | |||||
| 32,0 | 43,0 | 4,2 | 0,5 | RU6200320 | 36.17 x 2.62 | |||||
| 36,0 | 47,0 | 4,2 | 0,5 | RU6200360 | 39.34 x 2.62 | |||||
| 40,0 | 51,0 | 4,2 | 0,5 | RU6200400 | 44.12 x 2.62 | |||||
| 40,0 | 55,5 | 6,3 | 0,9 | RU6300400 | 44.04 x 3.53 | |||||
| 45,0 | 56,0 | 4,2 | 0,5 | RU6200450 | 48.90 x 2.62 | |||||
| 45,0 | 60,5 | 6,3 | 0,9 | RU6300450 | 50.39 x 3.53 | |||||
| 50,0 | 61,0 | 4,2 | 0,5 | RU6200500 | 53.64 x 2.62 | |||||
| 50,0 | 65,5 | 6,3 | 0,9 | RU6300500 | 53.57 x 3.53 | |||||
| 55,0 | 66,0 | 4,2 | 0,5 | RU6200550 | 58.42 x 2.62 | |||||
| 56,0 | 67,0 | 4,2 | 0,5 | RU6200560 | 59.99 x 2.62 | |||||
| 56,0 | 71,5 | 6,3 | 0,9 | RU6300560 | 59.92 x 3.53 | |||||
| 63,0 | 74,0 | 4,2 | 0,5 | RU6200630 | 66.34 x 2.62 | |||||
| 63,0 | 78,5 | 6,3 | 0,9 | RU6300630 | 66.27 x 3.53 | |||||||||
| 70,0 | 85,5 | 6,3 | 0,9 | RU6300700 | 75.79 x 3.53 | |||||||||
| 75,0 | 86,0 | 4,2 | 0,5 | RU6200750 | 82.22 x 2.62 | |||||||||
| 75,0 | 90,5 | 6,3 | 0,9 | RU6300750 | 82.14 x 3.53 | |||||||||
| 80,0 | 95,5 | 6,3 | 0,9 | RU6300800 | 85.32 x 3.53 | |||||||||
| 90,0 | 105,5 | 6,3 | 0,9 | RU6300900 | 94.84 x 3.53 | |||||||||
| 95,0 | 110,5 | 6,3 | 0,9 | RU6300950 | 101.19 x 3.53 | |||||||||
| 100,0 | 115,5 | 6,3 | 0,9 | RU6301000 | 104.37 x 3.53 | |||||||||
| 110,0 | 125,5 | 6,3 | 0,9 | RU6301100 | 113.89 x 3.53 | |||||||||
| 125,0 | 140,5 | 6,3 | 0,9 | RU6301250 | 129.77 x 3.53 | |||||||||
| 130,0 | 145,5 | 6,3 | 0,9 | RU6301300 | 136.12 x 3.53 | |||||||||
| 140,0 | 155,5 | 6,3 | 0,9 | RU6301400 | 145.64 x 3.53 | |||||||||
| 145,0 | 160,5 | 6,3 | 0,9 | RU6301450 | 151.99 x 3.53 | |||||||||
| 150,0 | 165,5 | 6,3 | 0,9 | RU6301500 | 158.34 x 3.53 | |||||||||
| 160,0 | 175,5 | 6,3 | 0,9 | RU6301600 | 164.69 x 3.53 | |||||||||
| 160,0 | 181,0 | 8,1 | 0,9 | RU6401600 | 164.47 x 5.33 | |||||||||
| 180,0 | 195,5 | 6,3 | 0,9 | RU6301800 | 183.74 x 3.53 | |||||||||
| 180,0 | 201,0 | 8,1 | 0,9 | RU6401800 | 189.87 x 5.33 | |||||||||
| 190,0 | 205,5 | 6,3 | 0,9 | RU6301900 | 196.44 x 3.53 | |||||||||
| 200,0 | 221,0 | 8,1 | 0,9 | RU6402000 | 208.92 x 5.33 | |||||||||
| 220,0 | 241,0 | 8,1 | 0,9 | RU6102200 | 227.97 x 5.33 | |||||||||
| 250,0 | 271,0 | 8,1 | 0,9 | RU6402500 | 253.37 x 5.33 | |||||||||
| 260,0 | 281,0 | 8,1 | 0,9 | RU6402600 | 266.07 x 5.33 | |||||||||
| 350,0 | 371,0 | 8,1 | 0,9 | RU6403500 | 354.97 x 5.33 | |||||||||
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