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BECA 005 Piston

BECA 005 Piston
BECA 005
beca_005_3d_v1
beca_005_3d_v2

Description

The BECA 005 Piston profile is a machined guide ring or wear ring with a 30° angle cut as standard in a tubular material composed of a cotton weave with a superfine mesh, imbibed with phenolic resin with added lubricant. Other types of cuts can be made.

Advantages

Good dimensional stability
Good vibration absorption
Good friction characteristics
Good dry operation
Increased life span

Technical data

Temperature

-40°C/+130°C

Speed

1 m/s

Max. compression resistance

270 to 340 N/mm²
Radial loads in dynamic applications

max. 100 N/mm² at 25°C
max. 50 N/mm² > at 60°C

Applications

Hydraulic cylinders
Hydraulic excavators
Mobile machinery
Construction equipment
Presses

Materials

Phenolic resin PF

Dimensions
Installation dimensions
Materials
Design guidelines
Technical data

Dimensions

005.0080494, 005.0100694, 005.0120894, 005.0141094, 005.0151194, 005.0160115, 005.0161294, 005.0180135, 005.0181494, 005.0200155, 005.0201694, 005.0220175, 005.0221894, 005.0250205, 005.0250209, 005.0252194, 005.0270225, 005.0270229, 005.0272394, 005.0280235, 005.0280239, 005.0282494, 005.0300255, 005.0300259, 005.0302694, 005.0320275, 005.0320279, 005.0322894, 005.0330285, 005.0330289, 005.0332994, 005.0350305, 005.0350309, 005.0353194, 005.0360315, 005.0360319, 005.0363294, 005.0370325, 005.0370329, 005.0373394, 005.0380335, 005.0380339, 005.0383494, 005.0400355, 005.0400359, 005.0403694, 005.0410365, 005.0410369, 005.0413794, 005.0420375, 005.0420379, 005.0423894, 005.0450405, 005.0450409, 005.0454194, 005.0480435, 005.0480439, 005.0484494, 005.0500455, 005.0500459, 005.0504694, 005.0520475, 005.0520479, 005.0550505, 005.0550509, 005.0580535, 005.0580539, 005.0600555, 005.0600559, 005.0610565, 005.0610569, 005.0630585, 005.0630589, 005.0650605, 005.0650609, 005.0680635, 005.0680639, 005.0700655, 005.0700659, 005.0720675, 005.0720679, 005.0750705, 005.0750709, 005.0780735, 005.0780739, 005.0800755, 005.0800759, 005.0850805, 005.0850809, 005.0900855, 005.0900859, 005.0950905, 005.0950909, 005.1000955, 005.1000959, 005.1051005, 005.1051009, 005.1101055, 005.1101059, 005.1151105, 005.1151109, 005.1201155, 005.1201159, 005.1251205, 005.1251209, 005.1251202, 005.1301259, 005.1301252, 005.1351309, 005.1351302, 005.1401359, 005.1401352, 005.1451409, 005.1451402, 005.1501459, 005.1501452, 005.1551509, 005.1551502, 005.1601559, 005.1601552, 005.1651609, 005.1651602, 005.1701659, 005.1701652, 005.1751709, 005.1751702, 005.1801759, 005.1801751, 005.1801752, 005.1851809, 005.1851801, 005.1851802, 005.1901859, 005.1901851, 005.1901852, 005.1951909, 005.1951901, 005.1951902, 005.2001959, 005.2001951, 005.2001952, 005.2052009, 005.2052001, 005.2052002, 005.2102059, 005.2102051, 005.2102052, 005.2152109, 005.2152101, 005.2152102, 005.2202159, 005.2202151, 005.2202152, 005.2252209, 005.2252201, 005.2252202, 005.2302259, 005.2302251, 005.2302252, 005.2352309, 005.2352301, 005.2352302, 005.2402359, 005.2402351, 005.2402352, 005.2452409, 005.2452401, 005.2452402, 005.2502459, 005.2502451, 005.2502452, 005.2552501, 005.2552502, 005.2602551, 005.2602552, 005.2652601, 005.2652602, 005.2702651, 005.2702652, 005.2752701, 005.2752702, 005.2802751, 005.2802752, 005.2852801, 005.2852802, 005.2902851, 005.2902852, 005.2952901, 005.2952902, 005.3002951, 005.3002952, 005.3053001, 005.3053002, 005.3103051, 005.3103052, 005.3153101, 005.3153102, 005.3203151, 005.3203152, 005.3253201, 005.3253202, 005.3303251, 005.3303252, 005.3353301, 005.3353302, 005.3403351, 005.3403352, 005.3453401, 005.3453402, 005.3503451, 005.3503452, 005.3603551, 005.3603552, 005.3703651, 005.3703652, 005.3803751, 005.3803752, 005.3903851, 005.3903852, 005.4003951, 005.4003952, 005.4504451, 005.4504452, 005.5004951, 005.5004952
Installation drawingLogement Gorge Bague de guidage Porteur Segment - Housing Groove Wear ring - BECA 005 Piston

Installation dimensions

Housing Groove Wear ring Guide ring Guide seal - BECA 005 Piston

Installation dimensions

ISO 10766 Bore diameter Groove diameter Groove width Thickness
of the seal		 Gap
ØD1 H9 Ød1 h8 L1 0/+0.20 E Z +/-0.50
* 16.0 - 50.0 D1 - 3.10 4.00 1.55 1.00
* 16.0 - 125.0 D1 - 5.00 5.60 2.50 1.25
* 25.0 - 250.0 D1 - 5.00 9.70 2.50 1.25
* 80.0 - 500.0 D1 - 5.00 15.00 2.50 1.25
* 125.0 - 999.9 D1 - 5.00 25.00 2.50 1.25
* 280.0 - 999.9 D1 - 8.00 25.00 4.00 2.00

Other dimensions are possible, not taking ISO 10766 into consideration. Please contact our experts.

Materials

Phenolic resin

The BECA 005 rod and piston wear rings are made from round phenolic resin tubes. This is a laminate composed of layers of very resistant cotton fabric, which has been soaked in a phenol resin and then compressed at a high temperature. While fitting under high pressure and high temperature environments, the phenolic resin bonds the coiled layers, which become inseparable after hardening.

The phenolic resin offers increased mechanical resistance (hard and rigid) with good resistance on impact, and good resistance on bending, stripping and compression. It has good dimensional stability with a very low moisture pickup.

Design guidelines

Guide sizing

The following formulas calculate the height "H" of the piston guide holder while taking account of the gap "Z" necessary at the ends of the ring after fitting. This gap "Z" offsets the thermal expansion under the effects of temperature, and prevents intermediate pressures and drag pressures in the system.

H = (F x f) / (ØD1 x Cr)

where:

H = Min. height of guide (mm)
F = Max. radial force (N)
f = Safety coefficient (we recommend 2)
ØD1 = Bore diameter (mm)
Cr = Permissible radial load in dynamic applications (N/mm²)

Types of cuts

The wear rings are made with a 30° angle cut as standard. Other types of cuts can be made on request, as shown in the diagram below.

Types of cuts for wear rings and guide strips

Technical data

Housing Groove Wear ring Guide ring Guide seal - BECA 005 Piston

Extrusion gaps

Seal thickness
E		 Radial extrusion gap
F/2
1.55 0.50
2.50 0.90
4.00 1.50

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

Radius

Bore diameter
ØD1		 Radius
R1
≤ 250.0 0.20
> 250.0 0.40
225 dimensions found
005.3253202
Standard request
 325,00 320,00 25,00 2,50
005.3303251
Standard request
 330,00 325,00 15,00 2,50
005.3303252
Standard request
 330,00 325,00 25,00 2,50
005.3353301
Standard request
 335,00 330,00 15,00 2,50
005.3353302
Standard request
 335,00 330,00 25,00 2,50
005.3403351
Standard request
 340,00 335,00 15,00 2,50
005.3403352
Standard request
 340,00 335,00 25,00 2,50
005.3453401
Standard request
 345,00 340,00 15,00 2,50
005.3453402
Standard request
 345,00 340,00 25,00 2,50
005.3503451
Standard request
 350,00 345,00 15,00 2,50
005.3503452
Standard request
 350,00 345,00 25,00 2,50
005.3603551
Standard request
 360,00 355,00 15,00 2,50
005.3603552
Standard request
 360,00 355,00 25,00 2,50
005.3703651
Standard request
 370,00 365,00 15,00 2,50
005.3703652
Standard request
 370,00 365,00 25,00 2,50
005.3803751
Standard request
 380,00 375,00 15,00 2,50
005.3803752
Standard request
 380,00 375,00 25,00 2,50
005.3903851
Standard request
 390,00 385,00 15,00 2,50
005.3903852
Standard request
 390,00 385,00 25,00 2,50
005.4003951
Standard request
 400,00 395,00 15,00 2,50
005.4003952
Standard request
 400,00 395,00 25,00 2,50
005.4504451
Standard request
 450,00 445,00 15,00 2,50
005.4504452
Standard request
 450,00 445,00 25,00 2,50
005.5004951
Standard request
 500,00 495,00 15,00 2,50
005.5004952
Standard request
 500,00 495,00 25,00 2,50
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