BOSCH REXROTH
BFSK80-2X/H3V3-M-S-0
R928049175
Breathers & Fillers
Filling and Breather filters KAUF
BOSCH REXROTH
MATERIAL: R928049175
SUMMARY: Filling and Breather filters KAUF
Due to extremely high demand, please call 888-651-5712 for availability
In hydraulics, air exchange at the fluid tank must be ensured at all times. Depending on the machine cycles, air is sucked into the tank and pressed out again. The air contains miniature particles as well as water steam. Due to temperature variations, the exchanged air condenses and stimulates the oxidation process of the oil. This leads to corrosion resulting in damage to the fluid tank. By means of the Rexroth BFSK breathing and air bleed filter, the fluid tank can suck in and give off clean and dry air. It is intended to be directly attached to a tank. The BFSK breathing and air bleed filters basically consist of an unscrewable replacement cartridge (1) with an integrated, pleated filter element (2) and an air filter housing (3). The air filter housing (3) is filled with water-absorbing granules (WA granules) (4). Optionally, check valves (5) can be integrated. The BFSK breathing and air bleed filter is available with and without integrated check valves. The version with integrated check valves is primarily used in wind turbines. The WA granules contain red indicator beads. The water saturation is indicated by a color change from red to orange. In addition, the optionally available visual maintenance indicator provides information on the state of the filter. The maintenance indicator (7) is connected using an adapter plate (6), which is sold separately. In addition, the adapter plate makes a direct connection to the fluid tank possible.
Standard version without check valve (Figure 1):
The contaminated air is transported to the WA granules (4) via opening A, is dried there and then flows through the pleated filter element. Solid dirt particles are captured here. Via connection T, only dried and filtered air gets into the tank. Air escaping from the system in the opposite direction is dried as well.
Version with check valve (5) in BFSK (Figure 2):
Functions in the same way as the standard version; but includes check valves (5) to prevent air exchange at no-load operation.
Version with check valve in the adapter plate (6) (Figure 3):
Functions in the same way as the standard version; but the escaping air, which may be mixed with oil mist, is diverted directly from the tank upstream of the filter via connection B into the environment.
|
01 |
02 |
03 |
04 |
05 |
06 |
07 |
|||||
|
BFSK |
‒ |
2X |
/ |
H3V3 |
‒ |
M |
‒ |
‒ |
|
Series |
|||
|
01 |
Air filter with water-absorbing granules |
BFSK |
|
|
Size |
|||
|
02 |
BFSK |
25 |
|
|
40 |
|||
|
80 |
|||
|
125 |
|||
|
Component series |
|||
|
03 |
Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions) |
2X |
|
|
Filter rating in μm |
|||
|
04 |
Glass fiber material, not cleanable, 3 μm |
H3V3 |
|
|
Seal |
|||
|
05 |
NBR seals |
M |
|
|
Material |
|||
|
06 |
Plastic variant – male thread for size 25 (steel double spindle) |
0 |
|
|
Stainless steel variant – male thread for sizes 40 ... 125 |
S |
||
|
Check valve |
|||
|
07 |
without check valve (standard) |
0 |
|
|
With check valve |
cracking pressure of anti-cavitation valve 0,02 bar cracking pressure of preload valve 0,02 bar |
CV |
|
For applications outside these parameters, please consult us!
|
Hydraulic fluid |
Classification |
Suitable sealing materials |
Standards |
|
|
Mineral oil |
HLP |
NBR |
DIN 51424 |
|
|
Bio-degradable |
Insoluble in water |
HETG |
NBR |
VDMA 24568 |
|
Important information on hydraulic fluids! For more information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us! |
||||
General
|
Type |
BFSK | |||||
|
Size |
25 | 40 | 80 | 125 | ||
|
Installation position |
Vertical | |||||
|
Connection |
Standard |
G 3/8 to G 1 1/4 BSP; (ISO 228) with adapter plate: Ø58 x 2.5 (DIN 24557) | ||||
|
Operating temperature range |
°C |
0 … +85 | ||||
|
Ambient temperature range |
°C |
-40 … +85 | ||||
|
Storage conditions 1) |
°C |
+5 … +40 | ||||
|
Material |
Replacement cartridge |
Steel | ||||
|
Air filter housing |
Polymethyl methacrylate | |||||
|
Adapter plate |
Aluminum, anodized | |||||
|
visual maintenance indicator |
Housing made of colorlessly passivated sheet steel | |||||
|
Weight |
kg |
0.4 | 1.5 | 2.92 | 4.1 | |
|
Filter element |
Micro glass H3V3 2) |
µm |
3 | |||
|
Admissible pressure differential |
bar |
1 | ||||
|
Filter material (WA granules) |
Volume |
cm³ |
100 | 600 | 1000 | 2000 |
|
calculative water absorption in ml |
l |
0.028 | 0.172 | 0.288 | 0.576 | |
| 1) | max. relative air humidity 65 % |
| 2) | Single-use element on the basis of inorganic fiber |
Important information on hydraulic fluids!
For more information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us!
Hydraulic
|
Size |
25 | 40 | 80 | 125 | |
|
Operating pressure max. |
bar |
1 | |||
|
Cracking pressure of the preload valve |
bar |
0.01 | |||
|
Type of pressure measurement |
Vacuum band filters | ||||
|
Response pressure of the safety valve |
bar |
0.05 | |||
|
Hydraulic fluid |
Classification |
Suitable sealing materials |
Standards |
|
|
Mineral oil |
HLP |
NBR |
DIN 51424 |
|
|
Bio-degradable |
Insoluble in water |
HETG |
NBR |
VDMA 24568 |
|
Important information on hydraulic fluids! For more information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us! |
||||
Operating ranges of the water-absorbing vent and bleed filters in hydraulic systems
|
Type |
Max. air flow at a starting pressure differential of 0,01 bar in l/min |
|
BFSK25 |
50 |
|
BFSK40 |
120 |
|
BFSK80 |
300 |
|
BFSK125 |
300 |
|
BFSK25...CV |
25 |
|
BFSK40...CV |
80 |
|
BFSK80...CV |
160 |
|
BFSK125...CV |
110 |
|
When air humidity is very high it is recommended to select the next highest variant with the aim of achieving a longerservice life. |
|
BFSK25-2X / H3V3-M-O-O
without check valve
BFSK25-2X / H3V3-M-O-CV
with check valve
BFSK40-2X / H3V3-M-S-O
without check valve
BFSK40-2X / H3V3-M-S-CV
with check valve
BFSK80-2X / H3V3-M-S-O
without check valve
BFSK80-2X / H3V3-M-S-CV
with check valve
BFSK125-2X / H3V3-M-S-O
without check valve
BFSK125-2X / H3V3-M-S-CV
with check valve
Vent and bleed filter without valves
Vent and bleed filter with valves
Vent and bleed filter with valves, maintenance indicator and adapter plate (AP1;AP2)
Vent and bleed filter with maintenance indicator and adapter plate (APCV) with integrated valves.
Breathing and air bleed filter
Dimensions in mm
|
Type |
A |
B |
⌀C |
D |
E |
G |
SW |
|
mm |
mm |
mm |
mm |
mm |
mm |
||
| BFSK25 | 146 | 60 | 70 | 12 | ≈ 10 | G3/8 | 22 |
| BFSK40 | 281 | 121 | 97 | 23 | ≈ 10 | G3/4 | 32 |
| BFSK80 | 335 | 181 | 130 | 30 | ≈ 11 | G1 1/4 | 50 |
| BFSK125 | 495 | 231 | 130 | 27 | ≈ 11 | G1 1/4 | 50 |
Installation
The connection thread of the filter must correspond to the connection thread of the tank cap. If an adapter plate is used, the hole pattern (DIN 24557-2) of the tank cap must be compared to the dimensions from the "Dimensions" chapter prior to installation. Please remove the sealing foil (air inlet A) and the end cap of the filter connection prior to use. Screw the filter directly into the tank bore or the adapter plate respectively. When installing the filter, the required servicing height of the replacement cartridge (approx. 50 mm) must be taken into account. For service reasons, we recommend installing the filter in a standing position. All filter components must be screwed on hand-tight.
Commissioning
It is not necessary to commission the filter.
Maintenance
Exchanging the replacement cartridge
It is necessary to exchange the replacement cartridge once the red marking of the maintenance indicator has been reached. Since the ambient conditions are very different depending on the place of installation, we recommend regular exchange of the replacement cartridge according to the specific installation conditions for BFSK filters that are designed without a maintenance indicator.
Exchanging the WA granules
If the indicator beads of the WA granules change their color from red to orange, the granules must be exchanged. The material numbers of the corresponding spare parts are indicated on the name plate of the complete filter. They must correspond to the material numbers on the replacement cartridge or the refill pack.
Maintenance instructions:
Remove the complete vent and bleed filter by turning the air filter housing manually counter-clockwise. Remove the replacement cartridge by turning it counter-clockwise (hold tank port downwards). The WA granules are protected against falling out by a foam pad. In case of incorrect handling (shaking, turning upside down, ...) the granules might fall out. Remove foam pad prior to exchanging the WA granules. Dispose of the used WA granules and foam pads in accordance with environmental and applicable local requirements. Waste code: 150202 Insert new bottom foam pad, fill in fresh WA granules and insert new upper foam pad. Screw air filter housing on tank port, put new seal ring (part of spare replacement cartridge) over air filter housing, center and install replacement cartridge (hand-tight) clockwise.Do not forget to reset the visual maintenance indicator. This is done by pressing the RESET button.
Notice!
Servicing should not take place below 10 °C. Should this still be necessary, however, special care must be taken when working with the plastic housing.
Filter element
89.
Filter element
89.
Size 25 … 125 Pressure differential 1 bar Filter rating 3 µmData sheet
Spare parts & repair
Classification according to the Pressure Equipment Directive
Water-absorbing Bosch Rexroth BFSK breathing and air bleed filters according to 51456 are not classified as devices or components for the purpose of the Pressure Equipment Directive 97/23/EG (PED).
Directive 94/9/EC (ATEX)
According to the assessment of the risk of ignition, Bosch Rexroth BFSK breathing and air bleed filters must not be used in potentially explosive areas.