BECA 231/B
Description
The BECA 231/B profile is a polyurethane U-ring type single acting rod seal with asymmetrical sealing lips and a second sealing lip. It can be assembled in a groove according to standard ISO 5597.
Advantages
Optimised sealing effect at both high and low pressures
Excellent abrasion and wear resistance
Assembly by deformation in closed groove
Technical data
| Temperature | -30°C/+110°C |
|---|---|
| Pressure | 40 MPa |
| Speed | 0.5 m/s |
| Medias | Mineral hydraulic oils |
Applications
Mobile machinery
Injection presses
Machine tools
Presses
Hydraulic cylinders
Materials
PU 93 Shore A - Blue
PU 96 Shore A - Blue
High temp. PU 96 Shore A - Beige
Dimensions
Materials
PU
Polyurethane is a material that has the elastic properties of rubber. The proportion in its composition (diisocyanate, polyol, chain extender) is determined by its properties. This material is characterised by a strong mechanical resistance, good wear resistance, high elastic modulus, good flexibility and a very good ozone and oxidation resistance.
| Chemical resistance | Pure aliphatic hydrocarbons (propane, butane) Mineral oils and greases Silicone oils and greases Water up to +50°C |
|---|---|
| Compatibility issue | Ketones, esters, ethers, alcohols and glycols Hot water, steam, alkalis, amines and acids |
| Temperature range | -30°C/+90°C -30°C / +110°C with our PUHT (short term peak at 150°C) |
Technical data
Extrusion gaps
| Rod diameter Ød1 |
Radial extrusion gap F/2 |
||||
|---|---|---|---|---|---|
| ≤ 5 MPa | ≤ 10 MPa | ≤ 20 MPa | ≤ 30 MPa | ≤ 40 MPa | |
| ≤ 60 mm | 0.40 | 0.30 | 0.20 | 0.15 | 0.10 |
| > 60 mm | 0.50 | 0.40 | 0.30 | 0.20 | 0.15 |
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 |
Chamfers and radius
| Radial section S |
Radius R1 |
Radius R2 |
Chamfer C |
|---|---|---|---|
| 3.50 | 0.20 | 0.40 | 2.00 |
| 4.00 | 0.20 | 0.60 | 2.50 |
| 5.00 | 0.20 | 1.00 | 2.50 |
| 7.50 | 0.20 | 1.00 | 4.00 |
| 12.50 | 0.20 | 1.30 | 6.00 |
| 20.00 | 0.20 | 1.80 | 8.00 |
|
231.2055063
|
55,00 | 63,00 | 12,00 | 13,00 |
|
231.2060070
|
60,00 | 70,00 | 12,00 | 13,00 |
|
231.2063073
|
63,00 | 73,00 | 12,00 | 13,00 |
|
231.2063078
|
63,00 | 78,00 | 11,50 | 12,50 |
|
231.2070080
|
70,00 | 80,00 | 12,00 | 13,00 |
|
231.2075085
|
75,00 | 85,00 | 12,00 | 13,00 |
|
231.2080090
|
80,00 | 90,00 | 12,00 | 13,00 |
|
231.2090105
|
90,00 | 105,00 | 11,50 | 12,50 |
|
231.2203257
|
22,00 | 32,00 | 5,70 | 6,30 |
|
231.4513020
|
13,00 | 20,00 | 4,00 | 4,50 |
|
231.7035043
|
35,00 | 43,00 | 6,30 | 7,00 |
|
231.7035045
|
35,00 | 45,00 | 7,00 | 8,00 |
|
231.7509011
|
75,00 | 90,00 | 11,50 | 12,50 |
|
231.8020030
|
20,00 | 30,00 | 8,00 | 9,00 |
|
231.8022032
|
22,00 | 32,00 | 8,00 | 9,00 |
|
231.8025035
|
25,00 | 35,00 | 8,00 | 9,00 |
|
231.8028038
|
28,00 | 38,00 | 8,00 | 9,00 |
|
231.8030040
|
30,00 | 40,00 | 8,00 | 9,00 |
