BECA 120VS

BECA 120VS
BECA 120VS
beca_120vs_3d_v1
beca_120vs_3d_v2

Description

The BECA 120VS profile is a rubber facial effect V'Ring composed of a conical rear face with a large body with a low radial section.

Advantages

Excellent chemical compatibility and wide temperature range, depending on the type of material chosen
Low friction
Good elasticity
Firm grip on the shaft

Technical data

Temperature

-30°C/+200°C

Speed

10 m/s

Applications

Agriculture
Automotive

Materials

NBR 60 - 70 Shore A
FKM 60 - 70 Shore A

Dimensions
Materials
Technical data

Dimensions

Installation drawingLogement Gorge V'Ring - Housing Groove V'Ring - BECA 120VS

Materials

ACM (Polyacrylate)

Polymers containing ethyl acrylate (or butyl acrylate) have a small amount of monomer, which is necessary for cross-linking; ACM is a material with better heat resistance than NBR. It is often used for automatic gearboxes.

Chemical resistance Mineral oils (motor oils, gear box oils, ATF oils)
Atmospheric and ozone agents
Compatibility issue Glycol-based brake fluids (Dot 3 & 4)
Aromatic and chlorinated hydrocarbons
Water and steam
Acids, alkalis and amines
Temperature range -25°C to + 150°C (short-term peak at +160°C)
-35°C / +150°C with particular ACMs

AEM (ethylene acrylate rubber)

As a methyl acrylate and ethylene copolymer, AEM is considered to be more resistant to heat than ACM. Its characteristics make it an intermediary between ACM and FKM.

Chemical resistance Cooling fluids
Aggressive mineral oils
Atmospheric agents
Water
Compatibility issue Aromatic solvents
Strong acids
Brake fluids
Gearbox oils
ATF oils
Temperature range - 40°C to + 150°C

CR (Polychloroprene)

This CR-based rubber is used in the refrigeration industry and for ventilation systems. This chloroprene was the first synthetic rubber to be developed and marketed.

Chemical resistance Paraffinic mineral oils
Silicone oils and greases
Water and water-based solvents for use at low temperatures
Refrigerant fluids
Ammoniac
Carbon dioxide
Atmospheric and ozone agents
Limited chemical resistance Naphthenic mineral oils
Aliphatic hydrocarbons (propane, butane, petroleum)
Glycol-based brake fluids
Compatibility issue Aromatic hydrocarbons (benzene)
Chlorinated hydrocarbons (trichlorethylene)
Polar solvents (ketone, acetone, acetic acid, ethylene-ester)
Temperature range -40°C / +100°C (short-term peak at +120°C)

EPDM (Ethylene Propylene Diene Monomer rubber)

As an Ethylene Propylene Diene Monomer copolymer, EPDM is commonly used for hot water taps, cooling systems, brake systems, dishwashers and washing machines.

Chemical resistance Hot water and steam up to +150°C
Glycol-based brake fluids (Dot 3 & 4) and silicone-based brake fluids (Dot 5)
Organic and inorganic acids
Cleaning agents, sodium and potassium alkalis
Hydraulic fluids (HFD-R)
Silicone oils and greases
Polar solvents (alcohols, ketones and esters)
Atmospheric and ozone agents
Compatibility issue Mineral oils and greases
Hydrocarbons
Low impermeability to gas
Temperature range -45°C / +150°C (short-term peak at +175°C)

FFKM (perfluorinated rubber)

FFKM has the best characteristics for resistance to high temperatures, with an excellent chemical inertia. This FKM-based rubber is very often used for high-temperature hydraulic and pneumatic systems, industrial valves, injection/fuel systems, motor seals and high-vacuum systems.

Chemical resistance Aliphatic and aromatic hydrocarbons
Polar solvents (ketones, esters and ethers)
Organic and inorganic acids
Water and steam
High-vacuum system
Compatibility issue Coolants (R11, R12, R13, R113, R114, etc.)
PFPE
Temperature range -15°C/+320°C

FKM (fluorinated rubber)

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 (short-term peak at +230°C)
-40°C / +200°C with particular FKMs

FVMQ (fluorosilicone rubber)

The FVMQ has mechanical and physical properties that are very similar to those of the VMQ. However, the FVMQ offers better resistance to fuels and mineral oils. However, resistance to hot air is not as good as that of the VMQ.

Chemical resistance Aromatic mineral oils (IRM 903 oil)
Fuels
Aromatic hydrocarbons with low molecular weights
(benzene, toluene)
Temperature range -70°C/+175°C

HNBR (Hydrogenated Nitrile Butadiene Rubber)

This HNBR-based rubber is obtained through selective hydrogenation of the NBR's butadiene groups. It is commonly used for power-assisted steering and for air conditioning.

Chemical resistance Aliphatic hydrocarbons
Mineral and vegetable oils and greases
Fire-resistant fluids (HFA, HFB and HFC)
Diluted acids, saline solutions and bases for operation at an average temperature
Water and steam up to +150°C
Atmospheric and ozone agents
Compatibility issue Chlorinated hydrocarbons
Polar solvents (ketones, esters and ethers)
Strong acids
Temperature range -30°C / +150°C (short-term peak at +160°C)
-40°C / +150°C with particular HNBRs

NBR (Nitrile Butadiene Rubber)

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 (short-term peak at +120°C)
-40°C / +100°C with particular NBRs

VMQ (silicone rubber: methyl vinyl polysiloxane)

This FVMQ-based rubber is very often used in fuel systems.

Chemical resistance Animal and vegetable oils and greases
Water for operation at an average temperature
Diluted saline solutions
Atmospheric and ozone agents
Compatibility issue Superheated steam up to +120°C
Chlorinated hydrocarbons with a low molecular weight (trichlorethylene)
Aromatic hydrocarbons (benzene, toluene)
Temperature range -60°C / +200°C (short-term peak at +230°C)

The table below gives an overview of the physical, chemical and mechanical characteristics for each of the materials.

Characteristics/Materials ACM AEM CR EPDM FFKM FKM FVMQ HNBR NBR VMQ
Abrasion resistant 2 3 2 2 4 2 4 2 2 4
Resistance to acids 4 3 2 2 1 1 3 1 3 3
Chemical resistance 4 2 2 1 1 1 1 2 2 2
Resistance to cold 4 2 2 2 3 4 2 2 2 2
Dynamic properties 3 3 3 2 3 2 4 1 2 4
Electrical properties 3 3 3 2 1 4 1 3 3 1
Flame resistant 4 4 2 4 1 1 2 4 4 3
Heat resistant 1 1 2 2 1 1 1 1 2 1
Sealing water 1 1 2 2 2 2 4 2 2 4
Oil resistant 1 3 2 4 1 1 2 1 1 2
Ozone resistant 1 1 2 1 1 1 1 2 4 1
Tearing resistant 2 3 3 1 4 3 4 2 2 4
Traction resistant 3 2 2 1 2 1 3 1 2 4
Water/vapour resistant 4 4 3 1 2 3 3 1 2 3
Resistance to atmospheric agents 1 1 1 1 1 1 1 2 3 1

1. Excellent properties 2. Good properties 3. Average properties 4. Poor properties

Chemical compatibility

A "Chemical compatibility guide" catalogue can be downloaded from the Documentation section. You can also use our online "Chemical compatibility" tool free of charge.

These two tools give you the option of measuring the behaviour of our materials that come into contact with the majority of existing fluids. The data displayed is the result of rigorous testing of the ambient temperature and in consultation with previous publications. Test results are not fully representative due to the specific features of your application. The tests performed actually do not consider additives and impurities that may exist under the actual conditions of use, nor the potential elevation of temperatures. Other parameters can also alter the behaviour of our materials, such as the hardness, persistence, abrasion, etc. We therefore recommend performing your own tests to verify the compatibility of our materials according to your specific application. Our technical team can provide you with any additional information.

Technical data

Installation Housing V'Ring - BECA 120VS

Loss of power

The sealing lip of a V'Ring exerts such a low pressure on the contact surface area that the loss of power resulting from it is also low. The variations in power loss depend on the circumferential speed as well as the diameter of the axis in rotation, as shown in the graph below. At speeds greater than 11.0 m/s, the sealing lip has a tendency to detach itself, as the centrifugal force is greater.

Frictional loss for V'Rings

Shaft design

Considering that the V'Ring is fitted and tightened by expansion on the shaft, it is driven into rotation with the shaft. The requirements of tolerances and surface conditions (Ra ≤ 3.2 µm) are relatively moderate. We recommend carefully selecting the size using the dimensional chart for applications in which power loss and V'Ring lifespan are important criteria. If the diameter of the shaft Ød1 overlaps two potential V'Ring choices, we recommend selecting the larger V'Ring. The tightness on the shaft will in fact reduce, like the contact pressure of the lip on the back.

Counter-face design

V'Ring back

Surface roughness
Roughness in Ra Circumferential speed v Media
0.40 µm - 0.80 µm > 10.0 m/s Oil, water
0.80 µm - 1.60 µm 5.0 m/s - 10.0 m/s Oil splashes, grease, water splashes
1.60 µm - 2.00 µm 1.0 m/s - 5.0 m/s Grease, dirt, water splashes
2.00 µm - 2.50 µm < 1.0 m/s Grease, dirt

The surface roughness must not have a Ra < 0.05 µm.

Flatness

The flatness of the counter-face is essential, even more so when rotation speeds are high. The maximum acceptable deviation is 0.40 mm for 100.00 mm.

Axial support

V'Ring axial support

Installing the V'Ring is recommended when the axial support is at full stop. This is also recommended for applications where tightening between the V'Ring and the shaft is relatively weak and where the circumferential speed will exceed 6.0 - 8.0 m/s.

The table below sets out the calculation method for the diameter of the support Ød2.

V'Ring profiles Diameter Ød2
BECA 120VA

Ød1 + 0.50 x C

BECA 120VE

Ød1 + 9.00 mm

BECA 120VL

Ød1 + 3.00 mm

BECA 120VS

Ød1 + 0.50 x C

40 dimensions found
120.VS005
Standard request
4,5 - 5,5 4,00 5,20 2,00 3,90 4,5 ± 0,4 d1 + 1,0 d1 + 6,0
120.VS006
Standard request
5,5 - 6,5 5,00 5,20 2,00 3,90 4,5 ± 0,4 d1 + 1,0 d1 + 6,0
120.VS007
Standard request
6,5 - 8,0 6,00 5,20 2,00 3,90 4,5 ± 0,4 d1 + 1,0 d1 + 6,0
120.VS008
Standard request
8,0 - 9,5 7,00 5,20 2,00 3,90 4,5 ± 0,4 d1 + 1,0 d1 + 6,0
120.VS010
Standard request
9,5 - 11,5 9,00 5,20 2,00 3,90 4,5 ± 0,4 d1 + 1,0 d1 + 6,0
120.VS012
Standard request
11,5 - 13,5 10,50 5,20 2,00 3,90 4,5 ± 0,4 d1 + 1,0 d1 + 6,0
120.VS014
Standard request
13,5 - 15,5 12,50 7,70 3,00 5,60 6,7 ± 0,6 d1 + 2,0 d1 + 9,0
120.VS016
Standard request
15,5 - 17,5 14,00 7,70 3,00 5,60 6,7 ± 0,6 d1 + 2,0 d1 + 9,0
120.VS018
Standard request
17,5 - 19,0 16,00 7,70 3,00 5,60 6,7 ± 0,6 d1 + 2,0 d1 + 9,0
120.VS020
Standard request
19,0 - 21,0 18,00 10,50 4,00 7,90 9,0 ± 0,8 d1 + 2,0 d1 + 12,0
120.VS022
Standard request
21,0 - 24,0 20,00 10,50 4,00 7,90 9,0 ± 0,8 d1 + 2,0 d1 + 12,0
120.VS025
Standard request
24,0 - 27,0 22,00 10,50 4,00 7,90 9,0 ± 0,8 d1 + 2,0 d1 + 12,0
120.VS028
Standard request
27,0 - 29,0 25,00 10,50 4,00 7,90 9,0 ± 0,8 d1 + 3,0 d1 + 12,0
120.VS030
Standard request
29,0 - 31,0 27,00 10,50 4,00 7,90 9,0 ± 0,8 d1 + 3,0 d1 + 12,0
120.VS032
Standard request
31,0 - 33,0 19,00 10,50 4,00 7,90 9,0 ± 0,8 d1 + 3,0 d1 + 12,0
120.VS035
Standard request
33,0 - 36,0 31,00 10,50 4,00 7,90 9,0 ± 0,8 d1 + 3,0 d1 + 12,0
120.VS038
Standard request
36,0 - 38,0 34,00 10,50 4,00 7,90 9,0 ± 0,8 d1 + 3,0 d1 + 12,0
120.VS040
Standard request
38,0 - 43,0 36,00 13,00 5,00 9,50 11,0 ± 1,0 d1 + 3,0 d1 + 15 ,0
120.VS045
Standard request
43,0 - 48,0 40,00 13,00 5,00 9,50 11,0 ± 1,0 d1 + 3,0 d1 + 15 ,0
120.VS050
Standard request
48,0 - 53,0 45,00 13,00 5,00 9,50 11,0 ± 1,0 d1 + 3,0 d1 + 15 ,0
120.VS055
Standard request
53,0 - 58,0 49,00 13,00 5,00 9,50 11,0 ± 1,0 d1 + 3,0 d1 + 15 ,0
120.VS060
Standard request
58,0 - 63,0 54,00 13,00 5,00 9,50 11,0 ± 1,0 d1 + 3,0 d1 + 15 ,0
120.VS065
Standard request
63,0 - 68,0 58,00 13,00 5,00 9,50 11,0 ± 1,0 d1 + 3,0 d1 + 15 ,0
120.VS070
Standard request
68,0 - 73,0 63,00 15,50 6,00 11,30 13,5 ± 1,2 d1 + 4,0 d1 + 18 ,0
120.VS075
Standard request
73,0 - 78,0 67,00 15,50 6,00 11,30 13,5 ± 1,2 d1 + 4,0 d1 + 18 ,0
120.VS080
Standard request
78,0 - 83,0 72,00 15,50 6,00 11,30 13,5 ± 1,2 d1 + 4,0 d1 + 18 ,0
120.VS085
Standard request
83,0 - 88,0 76,00 15,50 6,00 11,30 13,5 ± 1,2 d1 + 4,0 d1 + 18 ,0
120.VS090
Standard request
88,0 - 93,0 81,00 15,50 6,00 11,30 13,5 ± 1,2 d1 + 4,0 d1 + 18 ,0
120.VS095
Standard request
93,0 - 98,0 85,00 15,50 6,00 11,30 13,5 ± 1,2 d1 + 4,0 d1 + 18 ,0
120.VS100
Standard request
98,0 - 105,0 90,00 15,50 6,00 11,30 13,5 ± 1,2 d1 + 4,0 d1 + 18 ,0
120.VS120
Standard request
115,0 - 125,0 108,00 18,00 7,00 13,10 15,5 ± 1,5 d1 + 4,0 d1 + 21 ,0
120.VS130
Standard request
125,0 - 135,0 117,00 18,00 7,00 13,10 15,5 ± 1,5 d1 + 4,0 d1 + 21 ,0
120.VS140
Standard request
135,0 - 145,0 126,00 18,00 7,00 13,10 15,5 ± 1,5 d1 + 4,0 d1 + 21 ,0
120.VS150
Standard request
145,0 - 155,0 135,00 18,00 7,00 13,10 15,5 ± 1,5 d1 + 4,0 d1 + 21 ,0
120.VS160
Standard request
155,0 - 165,0 144,00 20,50 8,00 15,00 18,0 ± 1,8 d1 + 5,0 d1 + 24 ,0
120.VS170
Standard request
165,0 - 175,0 153,00 20,50 8,00 15,00 18,0 ± 1,8 d1 + 5,0 d1 + 24 ,0
120.VS180
Standard request
175,0 - 185,0 162,00 20,50 8,00 15,00 18,0 ± 1,8 d1 + 5,0 d1 + 24 ,0
120.VS190
Standard request
185,0 - 195,0 171,00 20,50 8,00 15,00 18,0 ± 1,8 d1 + 5,0 d1 + 24 ,0
120.VS199
Standard request
195,0 - 210,0 180,00 20,50 8,00 15,00 18,0 ± 1,8 d1 + 5,0 d1 + 24 ,0
120.VS110
Standard request
105,0 - 115,0 99,00 18,00 7,00 13,10 15,5 ± 1,5 d1 + 4,0 d1 + 21 ,0