BECA 513

BECA 513
beca_513_3d_v1
beca_513_3d_v2

Description

The BECA 513 profile is a high-performing, double acting compact piston seal composed of a dynamic polyurethane friction ring, profiled pre-tightened NBR ring and two POM back-up rings.

Advantages

Very good sealing effect
Possible increase in extrusion gaps
Excellent extrusion resistance even during pressure peaks
Excellent abrasion resistance
Assembled by deformation

Technical data

Temperature

-30°C/+100°C

Pressure

40 MPa

Speed

0.5 m/s

Medias

Mineral hydraulic oils

Applications


Mobile machinery
Hydraulic cylinders

Materials

Profiled seal

NBR 80 Shore A

Friction ring

PU 93 Shore A - Blue
PU 96 Shore A - Blue
High temp. PU 96 Shore A - Beige

Back-up rings

Polyoxymethylene (POM)

Dimensions
Materials
Technical data

Dimensions

Installation drawingLogement Gorge Joint de piston - Housing Groove Gland Piston seal BECA 513

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)

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

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

Technical data

Housing Groove Gland Piston Seal - BECA - 513

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

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
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
37 dimensions found
513.050
Standard request
50,00 36,00 8,50 9,00
513.060
Standard request
60,00 46,00 8,50 9,00
513.063
Standard request
63,00 48,00 10,50 11,00
513.065
Standard request
65,00 50,00 10,50 11,00
513.070
Standard request
70,00 55,00 10,50 11,00
513.075
Standard request
75,00 60,00 10,50 11,00
513.080
Standard request
80,00 65,00 10,50 11,00
513.085
Standard request
85,00 70,00 10,50 11,00
513.090
Standard request
90,00 75,00 10,50 11,00
513.095
Standard request
95,00 80,00 10,50 11,00
513.100
Standard request
100,00 85,00 12,00 12,50
513.105
Standard request
105,00 90,00 12,00 12,50
513.110
Standard request
110,00 95,00 12,00 12,50
513.115
Standard request
115,00 100,00 12,00 12,50
513.120
Standard request
120,00 105,00 12,00 12,50
513.125
Standard request
125,00 102,00 15,50 16,00
513.130
Standard request
130,00 107,00 15,50 16,00
513.135
Standard request
135,00 112,00 15,50 16,00
513.140
Standard request
140,00 117,00 15,50 16,00
513.150
Standard request
150,00 127,00 15,50 16,00
513.160
Standard request
160,00 137,00 15,50 16,00
513.170
Standard request
170,00 147,00 15,50 16,00
513.180
Standard request
180,00 157,00 15,50 16,00
513.185
Standard request
185,00 162,00 15,50 16,00
513.190
Standard request
190,00 167,00 15,50 16,00
513.200
Standard request
200,00 177,00 15,50 16,00
513.210
Standard request
210,00 187,00 15,50 16,00
513.220
Standard request
220,00 197,00 15,50 16,00
513.225
Standard request
225,00 202,00 15,50 16,00
513.230
Standard request
230,00 207,00 15,50 16,00
513.240
Standard request
240,00 217,00 15,50 16,00
513.250
Standard request
250,00 222,00 17,00 17,50
513.260
Standard request
260,00 232,00 17,00 17,50
513.270
Standard request
270,00 242,00 17,00 17,50
513.280
Standard request
280,00 252,00 17,00 17,50
513.300
Standard request
300,00 272,00 17,00 17,50
513.320
Standard request
320,00 292,00 17,00 17,50