RE 50070/10.

05
Replaces: 01.03

Reservoir oil filler/breather

1/10

Types ELF, BF and BL

R 7802_2

Reservoir oil filler/breather

with sieve type ELF 3...

Overview of contents
Contents
Features
Ordering details
Technical data
Function, symbols, section
Characteristic curves
Unit dimensions

H_S_95

Reservoir breather
type BF 7...K...

Features
Page
1
2, 3
4
4, 5
5, 6
7 to 10

Resistant to mineral oil, fire resistant fluids

(only build sizes 5 and 7) and bio-degradable
fluids
Good retention rate at low pressure drop
Synthetic mesh filler sieve (metal mesh as standard in
build size 5, also possible for build sizes 3 and 7)
Larger filler sieve area
Build size 7 with clogging indicator
Bayonet joint between air filter and filler sieve
(build sizes 5 and 7 with screwed joint)
Air filter secured to filler sieve by means of a chain
(build sizes 3 and 4)
Build sizes 5 and 7 are fitted with replaceable elements
(see table on page 3)
Spin on filter cartridge type BL
Welded joint in type BL

Information on available spare parts:

www.boschrexroth.com/spc

2/10

Bosch Rexroth AG

Hydraulics

ELF, BF, BL

RE 50070/10.05

Ordering details
FILTER
Reservoir air breather
with filling sieve
with spin-on-cartridge

Further details in clear text

AS = 4)
SO175 = 4)

=P
=3
=4
=5
=7
= 162

Only with
ELF and BF
Only withBL

Threaded connection, only with BF

Flanged connection, only with ELF and BF
Welded connection, only with BL
Filter rating
3 m absolute
10 m absolute

SO148 = 4)

(only with ELF and BF)

= 03
= 10
=W
=K
X=

Connection sizes
Threaded
Flanged
Welded
connection (G) connection (F) connection (S)

ELFP3...
ELFP4...

ELFP5...

1; 2)
1)

BFP3...

BFP4...
BFP5...
BFP7...

Connection
sizes

G 2 1/2
G3
G2
G 1 1/2

ELFP7...

2)

G 3/4
G 3/8
G 1/2
G 1/4
G 2 1/2
G1

BLP162F...

= Available, also see pages 7 to 10

1)
2)

=1
=1

3)

=2
=3
=4
=5

5)

4)

2)

=2

3)

=2

6)

Series Nos. 0 to 9

Flange mounting with self tapping cap screws

Flange mounting to DIN 24557/T2
Weldabale joint, material: St 35
Only with ELFP 3 and 7
Suitable for use with fire resistant fluids
Build size
3
4
5
7
162

=1
=1
=2
=3
=1
=1
=1

BLP162S...

Additional details
Surge protection
Metal filter sieve
(100 mm long)
Metal filter sieve
(200 mm long)

No code =
NBR seals, filter suitable
for use with mineral oil (HL, HLP)
to DIN 51524 and fast bio-degradable
pressure fluids HETG, HEES, HEPG
to VDMA 24568
V = 5; 6)
FKM seals, filter suitable
for use with phosphate ester
(HFD-R), polyglycol (HEPG)
and synthetic ester (HE)
NBR seals, filter suitabale
W = 5; 6)
for use with oil-in-water or water-in-oil
emulsions (HFA), water glycol (HFC)
and vegetable oils (HETG)

=G
=F
=S

Clogging indicator
Without connection possbilities for clogging indicators
With pressure gauge, measuring range 1 to +0,6 bar
(only with ELF7 and BF7)
Filter type

= BF
= ELF
= BL

Filter material paper fibre

Build size 3
Build size 4
Build size 5
Build size 7
Build size 162

HFA

W
W

HFC

W
W

Suitable for use with bio-degradable fluids

Build size
3
4
5
7
162

HETG
+
+
+
+
+

HEES
+
+
+
+
+

+ Unlimited use
Not suitable
Only limited use

Preferred filter types

Filter type

Filter rating in m

Type description

Material No.

10

FILTER ELFP 3 F10W1.X/

R900011023

ELF

10

FILTER ELFP 4 F10W1.X/

R900011241

10

FILTER ELFP 5 G10W4.X/

R900005153

Further preferred types and standard components

can be found in the EPS (Standard Price List).

HFD-R

HEPG

Hydraulics Bosch Rexroth AG

RE 50070/10.05 ELF, BF, BL

3/10

Ordering details for replacement air filter elements (only possible for build sizes 5, 7 and 162)
For types ELFP 5 and BFP 5

FILTERELEMENT 0005 L
Build size 5

= 0005

Element type L

Further details in clear text

=P

Filter rating
3 m
10 m

V=

FKM seals,
filter suitable for use with
phospate ester (HFD-R),
polyglycol (HEPG)
and synthetic ester (HE)

= 003
= 010

Filter material P

=P

For types ELFP 5 and BFP 7

FILTERELEMENT 0007 L
Build size 7

= 0007

Element type L

Further details in clear text

=P

Filter rating
3 m
10 m

V=

FKM seals,
filter suitable for use with
phospate ester (HFD-R),
polyglycol (HEPG)
and synthetic ester (HE)

= 003
= 010

Filter material P

=P

Ordering details for type BL 162: FILTERELEMENT 0160 MU010P

Technical data (for applications outside these parameters, please consult us!)
General
Installation

Vertical, max. 30 from vertical

Filter cartridges and

Build sizes 3, 4, 5

filter rating

Build size 7

Paper fibre, depth filter (3, 10 m)

Impregnated paper, depth filter (3, 10 m)
Phenol resin impregnated paper, filter rating 10 m

Build size BLP 162

Weight

Build size

Type ELF

kg

0.25 0.10

Type BF

kg

0.28 0.08

Type BLP 162 S

kg

1.75

Type BLP 162 F

kg

2.10

..5-..2.X/..
2.7

..5-..3.X/.. ..5-..4.X/.. ..5-..5.X/..

3.1

2.7

2.6

2.00

7
0.38
0.40

Hydraulic
Pressure fluid

Mineral oil (HL, HLP) to DIN 51524;

Fast bio-degradable pressure fluids to VDMA 24568
(also see RE 90221); HETG (rape seed oil);
HEPG (polyglycols); HEES (synthetic ester);
Other pressure fluids on request

Pressure fluid temperature range

10 + 100

Filling sieve filter rating (only with type ELF)

500

Cleanliness class to ISO code

Maximum permissible degree of contamination

of the pressure fluid is to ISO 4406 (c) relates to
the requirements for the entire hydraulic system 1)

Pneumatic
Air flow
1)

The cleanliness class stated for the components must

be adhered too in hydraulic systems. Effective filtration
prevents faults from occurring and at the same time
increases the component service life.

See characteristic curves

For the selection of filters see catalogue sheets RE 50070,
RE 50076, RE 50081, RE 50086 and RE 50088.

4/10

Bosch Rexroth AG

Hydraulics

ELF, BF, BL

RE 50070/10.05

Function, symbol, section

The reservoir oil filler/breathers, type ELF basically comprises
of an air filter for filtering the air flowing into the reservoir and a
filler sieve for retaining coarse dirt particles while filling.

Symbol
With clogging
indicator version "K"
(only build size 7)

The reservoir breathers, types BF and BL are, however only air

filters.
Reservoir filler/breather type ELF
Reservoir filler/breathers, type ELF are combined air filters for
filtering air flowing into the fluid reservoir and filler sieves for
retaining coarse dirt particles when filling.

Type ELFP 3...

The large sieve area allows the pressure fluid to be rapidly

filled.

Types ELFP 3... and ELFP 4...

These basically comprise of filter cap (1), air filter element (2),
filler sieve (3) and security chain (4).
Air enters via holes (5) on the underside of filter cap (1). In this
way, only particles suspended in air may enter the air filter
element (2), where they are separated according to the filter
rating.

Type ELFP 5...

1.1
Type ELFP 5...
These basically comprise of an air filter housing (cover 1.1;
lower component 1.2), air filter element (2) and filler sieve
which is screwed onto the air filter (3).

1.2
2

Air enters via the ring gap (5) between cover 1.1 and the lower
component 1.2. In this way, only particles suspended in air
may enter the air filter element (2), where they are separated
according to the filter rating.

They are fitted with replaceable air filter elements (2).

Type ELFP 7...

These basically comprise of an air filter housing (cover 1.1,
lower component 1.2), air filter element (2) and filler sieve (3).
Cover (1.1) and the lower component (1.2) are made of glass
fibre reinforced plastic and connected to each other via
threads. Air enters via openings (5) on the sides of lower
component (1.2).
In this way, only particles suspended in air may enter the air
filter element (2), where they are separated according to the
filter rating.

Type ELFP 7...K...

1.1
5
1.2

They are fitted with replaceable air filter elements (2).

For the monitoring of element contamination, the filters are
available with a pressure gauge (6).

Hydraulics Bosch Rexroth AG

RE 50070/10.05 ELF, BF, BL

5/10

Function, symbol, section

Reservoir breathers BF and BL
Reservoir breathers, type BF are only designed as
air filters and are screwed directly onto the reservoir.
In principle, the function of these filters
is the same as the ELF filler/breather.
The difference is in that the filling
sieve is not included.

Type BL breathers comprise

of a mounting stud (6) which
is fitted onto the reservoir
and a filter cartridge (2). The
filter cartridge screws onto
the stud.

Build sizes 5 and 7 are

equipped with replaceable
air filter elements.

2
6

Type BLP 162 S...

Type BFP 7...K...

ELFP 3 and BFP 3

0,03
0,02
0,01

Pressure differential in bar

200

ELFP 4 and BFP 4

0,03
0,02
0,01

50

100 150 200 250

Air flow in lN/min

300

0,04
BLP 162
0,03
0,02
0,01

500

1000 1500 2000 2500 3000

Air flow in lN/min

0,04
ELFP 5 and BFP 5
0,03
0,02
0,01

400 600 800 1000 1200

Air flow in lN/min

0,04

Pressure differential in bar

Pressure differential in bar

0,04

Pressure differential in bar

Pressure differential in bar

Characteristic curves (air flow in standard litres per minute. The characteristic curves are valid for all filter ratings!)

1000 2000 3000 4000 5000 6000

Air flow in lN/min

0,04
ELFP 7 and BFP 7
0,03
0,02
0,01

400

800 1200 1600 2000 2400

Air flow in lN/min

6/10

Bosch Rexroth AG

Hydraulics

ELF, BF, BL

RE 50070/10.05

Filter design
Filter ELF and BF p = 0,01 bar

Pressure differential at the air filter

In the clean condition the pressure differential
for each build size can be determined from the
characteristic curves on page 5.

3000

5/
P 5
F
EL BFP

2000

1000

We recommend that the air filter (with clean

element) is selected using the filter selection
diagram.
Start-up - p = 0,01 bar

FP

FP

500

B
7/

EL

Air flow in lN/min

Selection criteria

BF

FP

3/

EL

100
50

FP

FP

B
4/

EL
10
Filter selection diagram, example
The filter selection diagrams are valid for the
air filter types ELF and BF, build sizes 3, 4, 5, 7
and types BLP 162 S and BLP 162 F.

The following example explains the method

of using the filter selection diagrams:
Example:

Air flow Ql
(in standard litres per minute): 300 lN/min
Filter type:
ELF-Filter

Recommended start-up-p : 0.01 bar

Determination of the build size for

Ql = 300 l/min
using the filter selection diagram:

Build size 3
Filter type:

ELFP 3-..-...

1000
Air flow in lN/min

The filter sizes are determined with the help

of the selection diagrams, using a pressure
differential of
0,01 bar.

Filter BLP 162 p = 0,01 bar

3000
2000

500

100
50

10

P
BL

16

Hydraulics Bosch Rexroth AG

RE 50070/10.05 ELF, BF, BL

7/10

Unit dimensions (dimensions in mm)

Types ELFP 3... and ELFP 4...
d2

Porting pattern ELFP 4

d4
d5

Type

ELFP 3

ELFP 4

d1

76

44

d2

83

50

d3

49

28

d4

73

41,3

d4

d5

60

30

d5

d6

M5

M5

h1

159

135

h2

96,5

81,5

h3

62,5

53,5

d6

h2

h1

h3

d6

d1

d3
Porting pattern ELFP 3
to DIN 24557/part 2

Type ELFP 5

h3

d1

h5

SW 17

h4

1
Type

ELFP 5G..2.X/..

d1

177

h1
h2

177

177

177

68

68

49,5

39,5

G 2 1/2

G3

G2

G 1 1/2

ISO 228

ISO 228

ISO 228

ISO 228

h1

345

345

345

345

h2

240

240

240

240

h3

105

105

105

105

h4

25

25

25

25

h5

90

90

90

90

90

90

90

90

d2
d3
d3

Pos. 1
Across flats
d2

ELFP 5G..3.X/... ELFP 5G..4.X/... ELFP 5G..5.X/...

The air filter element is replaceable (see ordering details on page 3).

8/10

Bosch Rexroth AG

Hydraulics

ELF, BF, BL

RE 50070/10.05

Unit dimensions (dimensions in mm)

h4

Type ELFP 7
d1
b1

h3

ELFP 7

d1

116

d2

120

d3

49

d4

73

d5

60

d6

M5

h1

181

h2

97

h3

84

h4

60

b1

44

h2

h1

Type

2 6 off slotted counter

sunk screws
M5 x 16 DIN 963
3 Optional pressure gauge
as clogging indicator,
measuring range
1 to + 0.6 bar
The air filter element
is replaceable
(see ordering details on page 3).

d3

d2

ELFP 7.....

d6

d4
d5

Porting pattern
to DIN 24557/part 2

Types BFP 3 and BFP 4

d1

Type

BFP 3G..1.X/..

h1
h2

d2

h2

Type BFP 5
d1

SW 17

76

76

44

G 3/8

G 1/2

G 1/4

ISO 228

ISO 228

ISO 228

ISO 228

d3

19

12

15

h1

79

72

76

62

h2

16

12

14

13,5

36

22

27

17

Pos. 1
Across flats

Type

BFP 5G..1.X/...

d1

177

h1

d2

d2

BFP 4G..1.X/...

76

d2

BFP 3G..3.X/...

G 3/4

d1

d3

BFP 3G..2.X/...

G 2 1/2
ISO 228

h1

102

h2

90

The air filter element is replaceable

(see ordering details on page 3).

Hydraulics Bosch Rexroth AG

RE 50070/10.05 ELF, BF, BL

Unit dimensions (dimensions in mm)

Type BFP 7
h2

d1

Type

BFP 7G..1.X/...

d1

116

b1
d2

h1

h3

1
d2

G1
ISO 228

d3

120

h1

108

h2

60

h3

18

b1

44
41

Pos. 1
Across flats

1 41 mm across flats
3 Optional pressure gauge as clogging indicator,
measuring range 1 bar to + 0.6 bar
The air filter element is replaceable
(see ordering details on page 3).

d3

BFP7.......

h3

Type BLP 162 F

h1

h2

d1

Type

BLP 162 F

d1

127

d2

83

d3

73

d4

60

d5

M5

d6

25

h1

254

h2

175

h3

90

h4

h4

d5

d3
d4

d6
d2
Porting pattern to DIN 24557/T2

4 Seal is included within

the scope of supply
The air filter element
(cartridge) is replaceable
(see ordering details
on page 3).

9/10

10/10

Bosch Rexroth AG

Hydraulics

ELF, BF, BL

RE 50070/10.05

Unit dimensions (dimensions in mm)

h3

Type BLP 162 S

d1
BLP 162 S
127

d2

43

d3

25

d4

41

h1

245

h2

175

h3

90

h4

h1

h2

Type
d1

The air filter element

(cartridge) is replaceable
(see ordering details
on page 3).

h4

d4

d3
d2

Bosch Rexroth AG
Hydraulics
Zum Eisengieer 1
97816 Lohr am Main, Germany
Telefon +49 (0) 93 52 / 18-0
Telefax +49 (0) 93 52 / 18-23 58
documentation@boschrexroth.de
www.boschrexroth.de

Bosch Rexroth Limited

Cromwell Road, St Neots,
Cambs, PE19 2ES
Tel: 0 14 80/22 32 56
Fax: 0 14 80/21 90 52
E-mail: info@boschrexroth.co.uk

This document, as well as the data, specifications and

other information set forth in it, are the exclusive property
of Bosch Rexroth AG. It may not be reproduced or given
to third parties without its consent.
The data specified above only serve to describe the
product. No statements concerning a certain condition
or suitability for a certain application can be derived from
our information. The information given does not
release the user from the obligation of own judgment and
verification. It must be remembered that our products are
subject to a natural process of wear and aging.

Hydraulics Bosch Rexroth AG

RE 50070/10.05 ELF, BF, BL

11/10

Notes

Bosch Rexroth AG
Hydraulics
Zum Eisengieer 1
97816 Lohr am Main, Germany
Telefon +49 (0) 93 52 / 18-0
Telefax +49 (0) 93 52 / 18-23 58
documentation@boschrexroth.de
www.boschrexroth.de

Bosch Rexroth Limited

Cromwell Road, St Neots,
Cambs, PE19 2ES
Tel: 0 14 80/22 32 56
Fax: 0 14 80/21 90 52
E-mail: info@boschrexroth.co.uk

This document, as well as the data, specifications and

other information set forth in it, are the exclusive property
of Bosch Rexroth AG. It may not be reproduced or given
to third parties without its consent.
The data specified above only serve to describe the
product. No statements concerning a certain condition
or suitability for a certain application can be derived from
our information. The information given does not
release the user from the obligation of own judgment and
verification. It must be remembered that our products are
subject to a natural process of wear and aging.

12/10

Bosch Rexroth AG

Hydraulics

ELF, BF, BL

RE 50070/10.05

Notes

Bosch Rexroth AG
Hydraulics
Zum Eisengieer 1
97816 Lohr am Main, Germany
Telefon +49 (0) 93 52 / 18-0
Telefax +49 (0) 93 52 / 18-23 58
documentation@boschrexroth.de
www.boschrexroth.de

Bosch Rexroth Limited

Cromwell Road, St Neots,
Cambs, PE19 2ES
Tel: 0 14 80/22 32 56
Fax: 0 14 80/21 90 52
E-mail: info@boschrexroth.co.uk

This document, as well as the data, specifications and

other information set forth in it, are the exclusive property
of Bosch Rexroth AG. It may not be reproduced or given
to third parties without its consent.
The data specified above only serve to describe the
product. No statements concerning a certain condition
or suitability for a certain application can be derived from
our information. The information given does not
release the user from the obligation of own judgment and
verification. It must be remembered that our products are
subject to a natural process of wear and aging.