BECA 472
Description
The BECA 472 profile is a rubber double acting wiper seal on a metal cage.
Advantages
Tight and precise fitting in the housing
Good wiping effect, both internally and externally
Technical data
| Temperature | -30°C/+200°C |
|---|---|
| Speed | 1 m/s |
| Medias | Mineral hydraulic oils |
Applications
Agriculture
Mobile machinery
Material handling - Lifting
Hydraulic cylinders
Materials
Profiled seal
NBR 90 Shore A
FKM 90 Shore A
Metal cage
Steel
Dimensions
Materials
Metal cage
The table below shows the materials that we can offer for metal cages and springs.
| Application | Material | Standard | Characteristics |
|---|---|---|---|
| Metal cage | Non-alloy standard steel | AISI 1010 (DIN 1624) |
Cold rolled steel |
| Metal cage | Nickel chrome steel | AISI 304 (DIN 1.4301 - V2A) |
Standard stainless steel |
NBR
Nitrile rubber (NBR) is the general term for acrylonitrile-butadiene copolymer. The ACN content can vary between 18% and 50%. While the acrylonitrile content is important, the resistance to oil and fuel is more so. Conversely, the elasticity and compression set are not as good. The NBR has good mechanical properties and good wear resistance. However, its resistance to atmospheric agents and the ozone is relatively low.
| Chemical resistance | Aliphatic hydrocarbons (propane, butane, petroleum, diesel fuel) Mineral oils and greases Fire-resistant fluids (HFA, HFB and HFC) Diluted acids, low-temperature alkaline and saline solutions Water (up to +100°C max) |
|---|---|
| Compatibility issue | Fuels with high aromatic content Aromatic hydrocarbons (benzene) Chlorinated hydrocarbons (trichlorethylene) Polar solvents (ketone, acetone, acetic acid, ethylene-ester) Strong acids Glycol-based brake fluids Atmospheric and ozone agents |
| Temperature range | -30°C/+100°C -40°C / +100°C with our low-temperature NBR |
FKM
Depending on their structure and fluorine content, the chemical resistance and resistance to the cold in fluororubbers can vary. This FKM-based rubber is very often used for high-temperature hydraulics and pneumatics, for industrial valves, injection/fuel systems, motor seals and high-vacuum systems.
| Chemical resistance | Mineral oils and greases, ASTM n°1, IRM 902 and IRM 903 oils. Fire-resistant liquids (HFD) Silicone oils and greases Mineral and vegetable oils and greases Aliphatic hydrocarbons (propane, butane, petroleum) Aromatic hydrocarbons (benzene, toluene) Chlorinated hydrocarbons (trichlorethylene) Fuel (including high alcohol content) Atmospheric and ozone agents |
|---|---|
| Compatibility issue | Glycol-based brake fluids Ammonia gas Organic acids with a low molecular weight (formic and acetic acids) |
| Temperature range | -20°C/+200°C -40°C / +200°C with our FKM GLT on request |
Technical data
Surface roughness
| Roughness | Dynamic surface area | Static surface area | Groove flanks |
|---|---|---|---|
| Ra | 0.1 - 0.4 µm | ≤ 1.6 µm | ≤ 3.2 µm |
| Rz | 0.63 - 2.5 µm | ≤ 6.3 µm | ≤ 10.0 µm |
| Rmax | 1.0 - 4.0 µm | ≤ 10.0 µm | ≤ 16.0 µm |
Chamfer
The chamfer length as well as the chamfer angle are determined by the rod seal.
|
472.1501701
|
150,00 | 170,00 | 10,00 | 14,00 |
|
472.1551751
|
155,00 | 175,00 | 10,00 | 14,00 |
|
472.1601801
|
160,00 | 180,00 | 10,00 | 14,00 |
|
472.1701901
|
170,00 | 190,00 | 10,00 | 14,00 |
|
472.1802001
|
180,00 | 200,00 | 10,00 | 14,00 |
|
472.1802051
|
180,00 | 205,00 | 12,00 | 17,00 |
|
472.1902151
|
190,00 | 215,00 | 12,00 | 17,00 |
|
472.2002251
|
200,00 | 225,00 | 12,00 | 17,00 |
|
472.2102351
|
210,00 | 235,00 | 12,00 | 17,00 |
|
472.2202451
|
220,00 | 245,00 | 12,00 | 17,00 |
|
472.2252387
|
225,00 | 238,00 | 7,00 | 9,50 |
|
472.2302551
|
230,00 | 255,00 | 12,00 | 17,00 |
|
472.2402651
|
240,00 | 265,00 | 12,00 | 17,00 |
|
472.2502751
|
250,00 | 275,00 | 12,00 | 17,00 |
