BECA 560

BECA 560
beca_560_3d_v1
beca_560_3d_v2

Description

The BECA 560 profile is a high-performing, double acting compact piston seal composed of a profiled rubber ring and two POM back-up rings as standard.

Advantages

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

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

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 560

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 - 560

Extrusion gaps

Pressure
MPa
Radial extrusion gap
F/2
25 MPa 0.30
35 MPa 0.20
40 MPa 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
Chamfer
C
8.00 0.20 5.00
10.00 0.30 6.00

13 dimensions found
560.1040AK8
Standard request
40,00 24,00 18,00 18,40
560.1050AK8
Standard request
50,00 34,00 18,00 18,40
560.1055AK8
Standard request
55,00 39,00 18,00 18,40
560.1060AK8
Standard request
60,00 44,00 18,00 18,40
560.1070AK8
Standard request
70,00 50,00 22,00 22,40
560.1080AK8
Standard request
80,00 60,00 22,00 22,40
560.1090AK8
Standard request
90,00 70,00 22,00 22,40
560.1095AK8
Standard request
95,00 75,00 22,00 22,30
560.1100AK8
Standard request
100,00 75,00 22,00 22,40
560.1110AK8
Standard request
110,00 90,00 22,00 22,40
560.1115AK8
Standard request
115,00 90,00 22,00 22,30
560.1120AK8
Standard request
120,00 95,00 22,00 22,40
560.1130AK8
Standard request
130,00 105,00 25,00 25,30