BECA 512
BECA 512
Description
The BECA 512 profile is a high-performing, double acting compact piston seal composed of a dynamic bronze-filled PTFE friction ring, profiled pre-tightened NBR ring and two POM back-up rings.
Advantages
Low friction coefficient; no stick-slip effect
Possible increase in extrusion gaps
Excellent extrusion resistance even during pressure peaks
Excellent abrasion resistance
Assembled by deformation
Technical data
| Temperature | -30°C / +115°C depending on the material selected |
|---|---|
| Pressure | 50 MPa |
| Speed | 1.5 m/s |
| Medias | Mineral hydraulic oils |
Applications
Mobile machinery
Hydraulic cylinders
Materials
Profiled seal
NBR 80 Shore A
FKM 80 Shore A
Friction ring
Bronze-filled PTFE
Back-up rings
Polyoxymethylene (POM)
Dimensions
Materials
Technical data
Dimensions
Installation drawing
Materials
| Friction ring | Profiled seal | Contact surface area | ||||
|---|---|---|---|---|---|---|
| Code | Type of material | Colour | Code | Type of material | Service temperature | |
| DB | PTFE + 60% Bronze | Dark brown | K8 | NBR 80 Shore A | -30°C/+100°C | Steel, chrome steel, Cast iron |
| G8 | FKM 80 Shore A | -20°C / +115°C* | ||||
* Temperature limited due to the combination of polyoxymethylene (POM) back-up rings
Technical data
Extrusion gaps
| Pressure MPa |
Radial extrusion gap F/2 |
|---|---|
| 10 MPa | 0.50 |
| 25 MPa | 0.50 |
| 35 MPa | 0.40 |
| 40 MPa | 0.30 |
| 50 MPa | 0.30 |
Surface roughness
| Roughness | Dynamic surface area | Static surface area | Groove flanks |
|---|---|---|---|
| Ra | 0.05 - 0.2 µm | ≤ 1.6 µm | ≤ 3.2 µm |
| Rz | 0.4 - 1.6 µm | ≤ 6.3 µm | ≤ 10.0 µm |
| Rmax | 0.63 - 2.5 µm | ≤ 10.0 µm | ≤ 16.0 µm |
Chamfers and radius
| Radial section S |
Radius R1 |
Radius R2 |
Chamfer C |
|---|---|---|---|
| 5.00 | 0.20 | 0.70 | 2.50 |
| 7.50 | 0.20 | 1.20 | 5.00 |
| 11.50 | 0.20 | 1.80 | 8.00 |
| 14.00 | 0.20 | 2.50 | 10.00 |
43 dimensions found
|
512.040
|
40,00 | 30,00 | 8,50 | 9,00 |
|
512.045
|
45,00 | 35,00 | 8,50 | 9,00 |
|
512.050
|
50,00 | 36,00 | 8,50 | 9,00 |
|
512.S55
|
55,00 | 41,00 | 8,50 | 9,00 |
|
512.060
|
60,00 | 46,00 | 8,50 | 9,00 |
|
512.063
|
63,00 | 48,00 | 10,50 | 11,00 |
|
512.065
|
65,00 | 50,00 | 10,50 | 11,00 |
|
512.070
|
70,00 | 55,00 | 10,50 | 11,00 |
|
512.S75
|
75,00 | 60,00 | 10,50 | 11,00 |
|
512.080
|
80,00 | 65,00 | 10,50 | 11,00 |
|
512.085
|
85,00 | 70,00 | 10,50 | 11,00 |
|
512.090
|
90,00 | 75,00 | 10,50 | 11,00 |
|
512.095
|
95,00 | 80,00 | 10,50 | 11,00 |
|
512.100
|
100,00 | 85,00 | 12,00 | 12,50 |
|
512.105
|
105,00 | 90,00 | 12,00 | 12,50 |
|
512.110
|
110,00 | 95,00 | 12,00 | 12,50 |
|
512.115
|
115,00 | 100,00 | 12,00 | 12,50 |
|
512.120
|
120,00 | 105,00 | 12,00 | 12,50 |
|
512.125
|
125,00 | 102,00 | 15,50 | 16,00 |
|
512.130
|
130,00 | 107,00 | 15,50 | 16,00 |
|
512.S130
|
130,00 | 116,00 | 17,00 | 17,50 |
|
512.135
|
135,00 | 112,00 | 15,50 | 16,00 |
|
512.S140
|
140,00 | 115,00 | 15,50 | 16,00 |
|
512.140
|
140,00 | 117,00 | 15,50 | 16,00 |
|
512.150
|
150,00 | 127,00 | 15,50 | 16,00 |
|
512.S150
|
150,00 | 134,00 | 15,50 | 16,00 |
|
512.160
|
160,00 | 137,00 | 15,50 | 16,00 |
|
512.170
|
170,00 | 147,00 | 15,50 | 16,00 |
|
512.180
|
180,00 | 157,00 | 15,50 | 16,00 |
|
512.185
|
185,00 | 162,00 | 15,50 | 16,00 |
|
512.190
|
190,00 | 167,00 | 15,50 | 16,00 |
|
512.200
|
200,00 | 177,00 | 15,50 | 16,00 |
|
512.2210
|
210,00 | 187,00 | 15,50 | 16,00 |
|
512.2220
|
220,00 | 197,00 | 15,50 | 16,00 |
|
512.225
|
225,00 | 202,00 | 15,50 | 16,00 |
|
512.2230
|
230,00 | 207,00 | 15,50 | 16,00 |
|
512.2240
|
240,00 | 217,00 | 15,50 | 16,00 |
|
512.2250
|
250,00 | 222,00 | 17,00 | 17,50 |
|
512.2260
|
260,00 | 232,00 | 17,00 | 17,50 |
|
512.2270
|
270,00 | 242,00 | 17,00 | 17,50 |
|
512.280
|
280,00 | 252,00 | 17,00 | 17,50 |
|
512.2300
|
300,00 | 272,00 | 17,00 | 17,50 |
|
512.2320
|
320,00 | 292,00 | 17,00 | 17,50 |