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BECA 512

BECA 512
beca_512_3d_v1
beca_512_3d_v2

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
Glycol/oil emulsions
Water/oil

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 drawingLogement Gorge Joint de piston - Housing Groove Gland Piston seal BECA 512

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

Housing Groove Gland Piston Seal - BECA - 512

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
Standard request
40,00 30,00 8,50 9,00
512.045
Standard request
45,00 35,00 8,50 9,00
512.050
Standard request
50,00 36,00 8,50 9,00
512.S55
Standard request
55,00 41,00 8,50 9,00
512.060
Standard request
60,00 46,00 8,50 9,00
512.063
Standard request
63,00 48,00 10,50 11,00
512.065
Standard request
65,00 50,00 10,50 11,00
512.070
Standard request
70,00 55,00 10,50 11,00
512.S75
Standard request
75,00 60,00 10,50 11,00
512.080
Standard request
80,00 65,00 10,50 11,00
512.085
Standard request
85,00 70,00 10,50 11,00
512.090
Standard request
90,00 75,00 10,50 11,00
512.095
Standard request
95,00 80,00 10,50 11,00
512.100
Standard request
100,00 85,00 12,00 12,50
512.105
Standard request
105,00 90,00 12,00 12,50
512.110
Standard request
110,00 95,00 12,00 12,50
512.115
Standard request
115,00 100,00 12,00 12,50
512.120
Standard request
120,00 105,00 12,00 12,50
512.125
Standard request
125,00 102,00 15,50 16,00
512.130
Standard request
130,00 107,00 15,50 16,00
512.S130
Standard request
130,00 116,00 17,00 17,50
512.135
Standard request
135,00 112,00 15,50 16,00
512.S140
Standard request
140,00 115,00 15,50 16,00
512.140
Standard request
140,00 117,00 15,50 16,00
512.150
Standard request
150,00 127,00 15,50 16,00
512.S150
Standard request
150,00 134,00 15,50 16,00
512.160
Standard request
160,00 137,00 15,50 16,00
512.170
Standard request
170,00 147,00 15,50 16,00
512.180
Standard request
180,00 157,00 15,50 16,00
512.185
Standard request
185,00 162,00 15,50 16,00
512.190
Standard request
190,00 167,00 15,50 16,00
512.200
Standard request
200,00 177,00 15,50 16,00
512.2210
Standard request
210,00 187,00 15,50 16,00
512.2220
Standard request
220,00 197,00 15,50 16,00
512.225
Standard request
225,00 202,00 15,50 16,00
512.2230
Standard request
230,00 207,00 15,50 16,00
512.2240
Standard request
240,00 217,00 15,50 16,00
512.2250
Standard request
250,00 222,00 17,00 17,50
512.2260
Standard request
260,00 232,00 17,00 17,50
512.2270
Standard request
270,00 242,00 17,00 17,50
512.280
Standard request
280,00 252,00 17,00 17,50
512.2300
Standard request
300,00 272,00 17,00 17,50
512.2320
Standard request
320,00 292,00 17,00 17,50