BECA 340 - 349
![BECA 340 - 349](/media/beca_340_profil__050567500_1603_25112013.gif)
![beca_340_349_3d_v1](/media/thumbnails/beca_340_349_3d_v1__073455000_1601_05062015.jpg)
![beca_340_349_3d_v2](/media/thumbnails/beca_340_349_3d_v2__029655000_1601_05062015.jpg)
Description
The BECA 340 profile is a single acting rod seal composed of a profiled, filled PTFE U-ring type seal and a V-Shaped spring that is resistant to corrosion.
Advantages
Wide temperature range and excellent chemical resistance
Low friction coefficient; no stick-slip effect
Excellent abrasion resistance
Good dimensional stability
Non-toxic material
Technical data
Temperature | -200°C/+260°C |
---|---|
Pressure | 30 MPa |
Speed | 15 m/s |
Medias | Mineral hydraulic oils |
Applications
Actuators
Brakes systems
Flight controls
Motors
Landing gear
Materials
Profiled seal
Carbon-filled PTFE
PE-UHMW
V-Shaped spring
Stainless steel
Dimensions
![Logement Gorge Joint de tige aéronautique - Housing Groove Gland aerospace rod seal BECA 340](/media/logement_gorge_joint_de_tige_aeronautique_housing_groove_gland_aerospace_rod_seal_beca_340_349__046815000_1139_29102014.gif)
Materials
Friction ring | V-Shaped spring | Contact surface area | ||||||
---|---|---|---|---|---|---|---|---|
Standard code | ISO code | Material | Colour | Characteristics | Code | Type of material | Service temperature | |
DP | P | Virgin PTFE | White | Resistance to chemical products Sealing water Dielectric Non-stick Low friction coefficient Food & Beverage |
I | X10 Cr Ni 18-8 | -200°C/+260°C | Steel Stainless steel Chrome steel Aluminium Bronze Cast iron Treated surface |
DC | C | PTFE +25% Carbon |
Grey |
Improvement
Good resistance to chemical products Efficient as part of dynamic |
||||
CG | C | PTFE + 23% Carbon + 2% Graphite |
Black | |||||
DV | V | PTFE + 25 % Glass |
Blue | Improvement
corrected with the addition of MOS2 Chemical and dielectric properties preserved Well suited to applications with rotating and simultaneous alternating movements |
Steel Chrome steel Cast iron |
|||
VM | M | PTFE + 15 % Glass + 5% MoS2 |
Grey | |||||
DX | X | GL Blue PTFE + Glass + Metal oxides |
Turquoise blue | Compression resistant Wear resistant Excellent chemical stability Good thermal conductivity |
||||
DG | G | PTFE + 15% Graphite |
Black | Improvement
Self-lubricating Thermal and electrical conductivity Low permeability Good friction coefficient Anti-static Efficient as part of dynamic dynamic applications with self-lubrication |
Steel Stainless steel Chrome steel Aluminium Bronze Cast iron Treated surface |
|||
K1 | K | PTFE + 10% Ekonol |
Light brown | Improvement
Good friction coefficient and low permeability |
||||
K2 | K | PTFE + 20% Ekonol |
Light brown | |||||
DB | B | PTFE + 60% Bronze |
Dark brown | Improvement
Electrical and thermal conductivity Does not alter metal parts Reduced resistance to certain chemical products Used for dynamic seals with a strong compression and low level of wear |
Steel Chrome steel Cast iron |
|||
B4 | B | PTFE + 40% Bronze |
Dark brown | |||||
HG | HG | UHMW-PE | White or off-white | Excellent wear resistance on contact with water and air | I | X10 Cr Ni 18-8 | -200°C/+80°C | Steel Stainless steel Chrome steel Aluminium Bronze Cast iron Treated surface |
Other grades of materials are available depending on your specificities.
Technical data
Groove widths and extrusion gaps
Series | Groove width | Extrusion gaps F |
||
---|---|---|---|---|
L1 min - max | L2 min - max | L3 min - max | ||
010 - 012 | 2.39 - 2.52 | 3.81 - 4.06 | 5.26 - 5.51 | 0.10 |
013 - 028 | 0.13 | |||
110 - 125 | 3.58 - 3.83 | 4.65 - 4.90 | 6.22 - 6.47 | 0.13 |
126 - 131 | 0.15 | |||
132 - 149 | 0.18 | |||
210 - 222 | 4.78 - 5.03 | 5.97 - 6.22 | 7.72 - 7.97 | 0.13 |
223 - 225 | 0.15 | |||
226 - 245 | 0.18 | |||
246 - 247 | 0.20 | |||
325 - 327 | 7.14 - 7.39 | 8.48 - 8.73 | 10.77 - 11.02 | 0.15 |
328 - 349 | 0.18 | |||
425 - 449 | 9.53 - 9.78 | 12.07 - 12.32 | 14.71 - 14.96 | 0.23 |
450 - 460 | 0.25 |
Tolerances on the rod diameters and groove diameters
Series | Tolerance on rod diameter Ød1 |
Tolerance on groove diameter ØD1 |
---|---|---|
010 - 012 | -0.025/0 | 0/+0.025 |
013 - 349 | -0.050/0 | 0/+0.050 |
425 - 446 | -0.076/0 | 0/+0.076 |
447 - 460 | -0.076/0 | 0/+0.100 |
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 groove dimensions
Series | Radius | Step height |
Chamfer | |
---|---|---|---|---|
R1 min - max | R2 min - max | ØD1 - ØA | C | |
010 - 028 | 0.13 - 0.26 | 0.13 - 0.38 | 0.40 | 2.00 |
110 - 149 | 0.13 - 0.26 | 0.13 - 0.38 | 0.60 | 2.50 |
210 - 222 | 0.13 - 0.26 | 0.13 - 0.38 | 0.70 | 3.00 |
223 - 247 | 0.13 - 0.26 | 0.25 - 0.64 | 0.70 | 3.50 |
325 - 349 | 0.13 - 0.26 | 0.51 - 0.89 | 0.80 | 4.00 |
425 - 460 | 0.13 - 0.26 | 0.51 - 0.89 | 0.90 | 4.50 |
340.A328
|
328 | 47,57 | 57,02 | 57,02 | 7,14 | 8,48 | 10,77 |
340.A329
|
329 | 50,75 | 60,2 | 60,20 | 7,14 | 8,48 | 10,77 |
340.A330
|
330 | 53,92 | 63,37 | 63,37 | 7,14 | 8,48 | 10,77 |
340.A331
|
331 | 57,10 | 66,55 | 66,55 | 7,14 | 8,48 | 10,77 |
340.A332
|
332 | 60,27 | 69,72 | 69,72 | 7,14 | 8,48 | 10,77 |
340.A333
|
333 | 63,45 | 72,9 | 72,90 | 7,14 | 8,48 | 10,77 |
340.A334
|
334 | 66,62 | 76,07 | 76,07 | 7,14 | 8,48 | 10,77 |
340.A335
|
335 | 69,80 | 79,25 | 79,25 | 7,14 | 8,48 | 10,77 |
340.A336
|
336 | 72,97 | 82,42 | 82,42 | 7,14 | 8,48 | 10,77 |
340.A337
|
337 | 76,12 | 85,57 | 85,57 | 7,14 | 8,48 | 10,77 |
340.A338
|
338 | 79,30 | 88,75 | 88,75 | 7,14 | 8,48 | 10,77 |
340.A339
|
339 | 82,47 | 91,92 | 91,92 | 7,14 | 8,48 | 10,77 |
340.A340
|
340 | 85,65 | 95,1 | 95,10 | 7,14 | 8,48 | 10,77 |
340.A341
|
341 | 88,82 | 98,27 | 98,27 | 7,14 | 8,48 | 10,77 |
340.A342
|
342 | 92,00 | 101,45 | 101,45 | 7,14 | 8,48 | 10,77 |
340.A343
|
343 | 95,17 | 104,62 | 104,62 | 7,14 | 8,48 | 10,77 |
340.A344
|
344 | 98,35 | 107,8 | 107,80 | 7,14 | 8,48 | 10,77 |
340.A345
|
345 | 101,52 | 110,97 | 110,97 | 7,14 | 8,48 | 10,77 |
340.A346
|
346 | 104,70 | 114,15 | 114,15 | 7,14 | 8,48 | 10,77 |
340.A347
|
347 | 107,87 | 117,32 | 117,32 | 7,14 | 8,48 | 10,77 |
340.A348
|
348 | 111,05 | 120,5 | 120,50 | 7,14 | 8,48 | 10,77 |
340.A349
|
349 | 114,22 | 123,67 | 123,67 | 7,14 | 8,48 | 10,77 |
340.A425
|
425 | 114,22 | 126,34 | 126,34 | 9,53 | 12,07 | 14,71 |
340.A426
|
426 | 117,40 | 129,51 | 129,51 | 9,53 | 12,07 | 14,71 |
340.A427
|
427 | 120,57 | 132,69 | 132,69 | 9,53 | 12,07 | 14,71 |
340.A428
|
428 | 123,75 | 135,86 | 135,86 | 9,53 | 12,07 | 14,71 |
340.A429
|
429 | 126,92 | 139,04 | 139,04 | 9,53 | 12,07 | 14,71 |
340.A430
|
430 | 130,10 | 142,21 | 142,21 | 9,53 | 12,07 | 14,71 |
340.A431
|
431 | 133,27 | 145,39 | 145,39 | 9,53 | 12,07 | 14,71 |
340.A432
|
432 | 135,45 | 148,56 | 148,56 | 9,53 | 12,07 | 14,71 |
340.A433
|
433 | 139,62 | 151,74 | 151,74 | 9,53 | 12,07 | 14,71 |
340.A434
|
434 | 142,80 | 154,91 | 154,91 | 9,53 | 12,07 | 14,71 |
340.A435
|
435 | 145,97 | 158,09 | 158,09 | 9,53 | 12,07 | 14,71 |
340.A436
|
436 | 149,15 | 161,26 | 161,26 | 9,53 | 12,07 | 14,71 |
340.A437
|
437 | 152,32 | 164,44 | 164,44 | 9,53 | 12,07 | 14,71 |
340.A438
|
438 | 158,67 | 170,79 | 170,79 | 9,53 | 12,07 | 14,71 |
340.A439
|
439 | 165,02 | 177,14 | 177,14 | 9,53 | 12,07 | 14,71 |
340.A440
|
440 | 171,37 | 183,49 | 183,49 | 9,53 | 12,07 | 14,71 |
340.A441
|
441 | 177,72 | 189,84 | 189,84 | 9,53 | 12,07 | 14,71 |
340.A442
|
442 | 184,07 | 196,19 | 196,19 | 9,53 | 12,07 | 14,71 |
340.A443
|
443 | 190,42 | 202,54 | 202,54 | 9,53 | 12,07 | 14,71 |
340.A444
|
444 | 196,77 | 208,89 | 208,89 | 9,53 | 12,07 | 14,71 |
340.A445
|
445 | 203,12 | 215,24 | 215,24 | 9,53 | 12,07 | 14,71 |
340.A446
|
446 | 215,82 | 227,94 | 227,94 | 9,53 | 12,07 | 14,71 |
340.A447
|
447 | 228,52 | 240,64 | 240,64 | 9,53 | 12,07 | 14,71 |
340.A448
|
448 | 241,22 | 253,34 | 253,34 | 9,53 | 12,07 | 14,71 |
340.A449
|
449 | 253,92 | 266,04 | 266,04 | 9,53 | 12,07 | 14,71 |
340.A450
|
450 | 266,62 | 278,74 | 278,74 | 9,53 | 12,07 | 14,71 |
340.A451
|
451 | 279,32 | 291,44 | 291,44 | 9,53 | 12,07 | 14,71 |
340.A452
|
452 | 292,02 | 304,14 | 304,14 | 9,53 | 12,07 | 14,71 |
340.A453
|
453 | 304,72 | 316,84 | 316,84 | 9,53 | 12,07 | 14,71 |
340.A454
|
454 | 317,42 | 329,54 | 329,54 | 9,53 | 12,07 | 14,71 |
340.A455
|
455 | 330,12 | 342,24 | 342,24 | 9,53 | 12,07 | 14,71 |
340.A456
|
456 | 342,82 | 354,94 | 354,94 | 9,53 | 12,07 | 14,71 |
340.A457
|
457 | 355,52 | 367,64 | 367,64 | 9,53 | 12,07 | 14,71 |
340.A458
|
458 | 368,22 | 380,34 | 380,34 | 9,53 | 12,07 | 14,71 |
340.A459
|
459 | 380,92 | 393,04 | 393,04 | 9,53 | 12,07 | 14,71 |
340.A460
|
460 | 393,62 | 405,74 | 405,74 | 9,53 | 12,07 | 14,71 |