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BECA 571

BECA 571
beca_571_3d_v1
beca_571_3d_v2

Description

The BECA 571 profile is a high-performing, double acting compact piston seal composed of a soft rubber ring and a POM wear/back-up ring as standard.

Advantages

Good sealing effect
Excellent extrusion resistance
Excellent wear resistance
Reliable sealing for significant and sudden pressure variations

Technical data

Temperature

-30°C/+200°C

Pressure

40 MPa

Speed

0.5 m/s

Medias

Mineral hydraulic oils
Fire-resistant liquids
Biocompatible fluids
Water
Others (contact our experts)

Applications

Agriculture
Mobile machinery
Hydraulic cylinders

Materials

Profiled seal

NBR 80 Shore A
FKM 80 Shore A

Wear/back-up rings

Polyoxymethylene (POM)
Bronze-filled PTFE

Dimensions
Materials
Technical data

Dimensions

Installation drawingLogement Gorge Joint de piston - Housing Groove Gland Piston seal BECA 571

Materials

NBR 80 Shore A

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 in dynamic applications (+120°C in static applications)

FKM 80 Shore A

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

Polyoxymethylene - POM

Polyoxymethylene (POM or polyacetal) belongs to the thermoplastics, which have a number of advantages - strong mechanical resistance, good creep strength, high resistance to shocks, particularly at low temperatures, good wear resistance, good sliding coefficient, excellent machinability and good dielectric properties. The low water absorption coefficient, unlike polyamide (PA), also gives this material an excellent dimensional stability.

Chemical resistance

Aliphatic hydrocarbons (propane, butane, petroleum, diesel fuel)
Mineral oils and greases
Fire-resistant fluids (HFA, HFB and HFC)
Water

Compatibility issue Acids
Temperature range -50°C/+115°C

Bronze-filled PTFE

PTFE is a thermoplastic polymer made of tetrafluoroethylene with exceptional properties - very low friction coefficient (adhesive friction and sliding friction are almost equal), physiologically safe for temperatures up to +200°C, excellent electrical insulation properties, and excellent chemical compatibility with the majority of fluids. On the other hand, as this material is plastic and not elastic, so it cannot easily replace rubber bases.

Between 40% and 60% of bronze is added to the PTFE as a filler. This machined material has excellent wear resistance, low creep deformation and good thermal conductivity.

Technical data

Housing Groove Gland Piston Seal - BECA - 571

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
Min. chamfer
C
4.00 0.40 0.40 2.50
5.00 0.40 0.40 3.00
6.00 0.40 0.40 3.00
7.50 0.40 0.40 4.00
8.50 0.40 0.40 5.00
10.00 0.80 0.80 6.00
15.00 0.80 0.80 8.00
66 dimensions found
571.0035AK8
Standard request
35,00 27,00 31,00 34,40 - 15,50 3,20 -
571.1025AK8
Standard request
25,00 16,00 20,00 24,40 - 13,50 3,20 -
571.R025AK8
Standard request
25,00 17,00 21,00 24,40 14,00 13,50 3,20 2,10
571.3025AK8
Standard request
25,00 17,00 22,00 24,00 - 10,00 4,00 -
571.R030AK8
Standard request
30,00 22,00 26,00 29,40 19,00 13,50 3,20 2,10
571.1032AK8
Standard request
32,00 22,00 26,00 31,40 - 15,50 3,20 -
571.R032AK8
Standard request
32,00 24,00 28,00 31,40 21,00 15,50 3,20 3,10
571.3032AK8
Standard request
32,00 24,00 29,00 31,00 - 10,00 4,00 -
571.5035AK8
Standard request
35,00 25,00 29,00 34,40 - 15,50 3,20 -
571.R035AK8
Standard request
35,00 27,00 31,00 34,40 24,00 15,50 3,20 3,10
571.0036AK8
Standard request
36,00 28,00 32,00 35,40 - 15,50 3,20 -
571.1040AK8
Standard request
40,00 24,00 35,40 38,70 - 18,40 6,35 -
571.5040AK8
Standard request
40,00 26,00 36,00 39,40 - 15,50 3,20 -
571.2040AK8
Standard request
40,00 30,00 35,40 38,70 - 16,30 6,35 -
571.0040AK8
Standard request
40,00 32,00 36,00 39,40 - 15,50 3,20 -
571.R040AK8
Standard request
40,00 32,00 36,00 39,40 29,00 15,50 3,25 3,10
571.3040AK8
Standard request
40,00 32,00 37,00 39,00 - 10,00 4,00 -
571.0042AK8
Standard request
42,00 34,00 38,00 41,40 - 15,50 3,20 -
571.0045AK8
Standard request
45,00 37,00 41,00 44,40 - 15,50 3,20 -
571.R045AK8
Standard request
45,00 37,00 41,00 44,40 34,00 15,50 3,20 3,10
571.1050AK8
Standard request
50,00 34,00 45,40 48,70 - 18,40 6,35 -
571.0050AK8
Standard request
50,00 38,00 46,00 49,40 - 20,50 4,20 -
571.3050AK8
Standard request
50,00 40,00 47,00 49,00 - 12,50 4,00 -
571.1055AK8
Standard request
55,00 39,00 50,40 53,60 - 18,40 6,35 -
571.0055AK8
Standard request
55,00 43,00 51,00 54,40 - 20,50 4,20 -
571.1060AK8
Standard request
60,00 44,00 55,40 58,70 - 18,40 6,35 -
571.0060AK8
Standard request
60,00 48,00 56,00 59,40 - 20,50 4,20 -
571.1063AK8
Standard request
63,00 47,00 58,40 61,70 - 18,40 6,35 -
571.0063AK8
Standard request
63,00 51,00 59,00 62,40 - 20,50 4,20 -
571.3063AK8
Standard request
63,00 53,00 60,00 62,00 - 12,50 4,00 -
571.0065AK8
Standard request
65,00 50,00 61,00 64,40 - 18,30 4,20 -
571.1070AK8
Standard request
70,00 50,00 64,20 68,30 - 22,40 6,35 -
571.0070AK8
Standard request
70,00 58,00 66,00 69,40 - 20,50 4,20 -
571.1075AK8
Standard request
75,00 55,00 69,20 73,30 - 22,40 6,35 -
571.0075AK8
Standard request
75,00 63,00 71,00 74,40 - 20,50 4,20 -
571.1080AK8
Standard request
80,00 60,00 74,20 78,30 - 22,40 6,35 -
571.3080AK8
Standard request
80,00 65,00 76,00 78,50 - 20,00 5,00 -
571.0080AK8
Standard request
80,00 66,00 76,00 79,40 - 22,50 5,20 -
571.1085AK8
Standard request
85,00 65,00 79,20 83,30 - 22,40 6,35 -
571.0085AK8
Standard request
85,00 71,00 81,00 84,40 - 22,50 5,20 -
571.1090AK8
Standard request
90,00 70,00 84,20 88,30 - 22,40 6,35 -
571.0090AK8
Standard request
90,00 76,00 86,00 89,40 - 22,50 5,20 -
571.1095AK8
Standard request
95,00 75,00 89,20 93,30 - 22,40 6,35 -
571.1100AK8
Standard request
100,00 75,00 93,20 98,00 - 22,40 6,35 -
571.3100AK8
Standard request
100,00 85,00 96,00 98,50 - 20,00 5,00 -
571.0100AK8
Standard request
100,00 86,00 96,00 99,40 - 22,50 5,20 -
571.2100AK8
Standard request
100,00 87,00 93,80 98,50 - 14,00 6,00 -
571.2110AK8
Standard request
110,00 90,00 104,10 108,30 - 22,50 6,35 -
571.1110AK8
Standard request
110,00 90,00 104,10 108,30 - 25,30 6,35 -
571.0110AK8
Standard request
110,00 96,00 106,00 109,40 - 22,50 5,20 -
571.0115AK8
Standard request
115,00 90,00 111,00 114,40 - 22,40 5,20 -
571.0120AK8
Standard request
120,00 106,00 116,00 119,40 - 22,50 5,20 -
571.3125AK8
Standard request
125,00 105,00 120,00 123,00 - 25,00 6,30 -
571.0125AK8
Standard request
125,00 108,00 121,00 124,40 - 26,50 7,20 -
571.5130AK8
Standard request
130,00 105,00 122,60 127,50 - 25,30 9,50 -
571.3140AK8
Standard request
140,00 120,00 135,00 138,00 - 25,00 6,30 -
571.0140AK8
Standard request
140,00 123,00 136,00 139,40 - 26,50 7,20 -
571.0150AK8
Standard request
150,00 133,00 148,00 149,40 - 26,50 7,20 -
571.0160AF8
Standard request
160,00 143,00 156,00 159,40 - 26,50 7,20 -
571.0160AK8
Standard request
160,00 143,00 156,00 159,40 - 26,50 7,20 -
571.0170AK8
Standard request
170,00 153,00 166,00 169,40 - 26,50 7,20 -
571.3180AK8
Standard request
180,00 150,00 172,00 178,00 - 36,00 12,50 -
571.0180AK8
Standard request
180,00 163,00 176,00 179,50 - 26,50 7,20 -
571.0200AK8
Standard request
200,00 180,00 196,00 199,40 - 31,50 9,20 -
571.0220AK8
Standard request
220,00 200,00 216,00 219,40 - 31,50 9,20 -
571.0250AK8
Standard request
250,00 230,00 246,00 249,40 - 31,50 9,20 -