Hitachi SRL-5.5MB5A, SRL-7.5MB5A, SRL-11MB5A, SRL-22MB5A, SRL-3.7MB5A Specification

Low noise, low vibration & high reliability.

Great energy savings with Multi-Drive Control.

SRL-5.5MB5A

Scroll Compression Principle

High Reliability Space Saving

Multi-Drive Control

Energy Saving

1. Compressor sucks air through an air inlet located at outer scroll.

2. Compression chamber becomes smaller with the rotary movement
and trapped air is compressed.

3. Compression chamber achieves minimum volume at the centre of the
scroll and air is pumped out through the air outlet located at the centre
of scroll.

4. The suction, compression & discharging process is repeated continuously.

Compression

chamber

Suction process

Discharging process

Compression process

Intake

Air

Fixed scroll

Orbiting scroll

Outlet

SRL - 5.5MB 5 A

for ASIA/Australia
Frequency（5：50Hz）

MB type

Motor Nominal Output（kW）

Oil-free SCROLL

Model Nomenclature:

HITACHI BEBICON COMPRESSORS

Oil-free Scroll Air Compressor (2.2-22kW)

®

Innovation, Performance and Reliability

SRL-11MB5ASRL-7.5MB5A

Control Mode setting can be changed between Multi-Drive Control and Pressure Switch Control.
Under Multi-Drive Control mode, the operation of SRL heads is modified automatically, responding to the need of air.
The necessary pressure is maintained producing an optimized, energy-saving performance.

P-Mode:

Similar to conventional Pressure Switch Control, if
maximum pressure is reached, the compressor will
stop operating. When the pressure decreases to the
cut-in pressure, the compressor will restart.

Multi-Drive Mode:

The compressor is automatically controlled to maintain
the necessary operating pressure（control pressure).
Unnecessary power consumption is prevented by
avoiding reaching maximum pressure - and energy
savings are achieved.

Max. Pressure

Control Pressure

Cut-in Pressure

Time

Pressure

P-mode

Operation

Multi-Drive mode

Operation

Energy-Saving
Eect

P-mode Operation

Multi-Drive mode Operation

Space saving

Energy saving with Multi-Drive Control

Control Mode setting can be changed between Multi-Drive Control and Pressure Switch Control. Under Multi-Drive Control mode,

the operation of SRL heads is modied automatically, responding to the need of air. The necessary pressure is maintained producing

an optimized, energy-saving performance.

P-Mode:

Similar to conventional Pressure Switch Control, if

maximum pressure is reached, the compressor will

stop operating. When the pressure decreases to the

cut-in pressure, the compressor will restart.

Multi-Drive Mode:

The compressor is automatically controlled to maintain

the necessary operating pressure (control pressure).

Unnecessary power consumption is prevented by

avoiding reaching maximum pressure - and energy

savings are achieved.

Because the back and right sides are at and the exhaust extraction is from the top, it’s possible to install the compressor with

two sides close to walls. Installation space is greatly saved.

*

It is still necessary to secure space for maintenance.

Low noise, low vibration

◦

Noise level is a low 47dB［A］-as quiet as a library !（3.7kW）◦Low vibration:pencils remain standing on the top during operation.

1. Compressor sucks air through an air inlet located at
outer scroll.

2. Compression chamber becomes smaller with the
rotary movement and trapped air is compressed.

3. Compression chamber achieves minimum volume at
the center of the scroll and air is pumped out through
the air outlet located at the center of scroll.

4. The suction, compression & discharging process is
repeated continuously.

SRL - 5.5MB 5 A

for ASIA/Australia
Frequency（5：50Hz）

M type, MB type

Motor Output（kW）

Oil-free SCROLL

Model Nomenclature

Compression

chamber

Suction process

Discharging process

Compression process

Intake

Air

Fixed scroll

Orbiting scroll

Outlet

Because the back and right sides are flat and the exhaust extraction is from the top, it’s possible to install the compressor
with two sides close to walls. Installation space is greatly saved.

＊

It is still necessary to secure space for maintenance.

Control Mode setting can be changed between Multi-Drive Control and Pressure Switch Control.
Under Multi-Drive Control mode, the operation of SRL heads is modified automatically, responding to the need of air.
The necessary pressure is maintained producing an optimized, energy-saving performance.

Pressure

Easy to use

1. No need to change oil and separate the oil from drain. No need to install oil mist lter as well.*

2. Well-designed structure means easy maintenance - for the draining and cleaning of suction lters.

*

If the suction air is thought to contain oil, it is necessary to install an oil mist lter.

Hitachi Australia Pty Ltd

Level 8, 123 Epping Road, Macquarie Park NSW 2113
Locked Bag 2052, North Ryde NSW 2113
TEL: [phone] FAX: [phone]
Email: [e-mail]
Website: www.hitachi.com.au/products/business/power/atg.dhtml

For further information please contact your nearest sales representative.

Specications

Note:

1. Air capacity is converted value at its inlet condition. For guaranteed values, contact your nearest dealer or

HIT

ACHI local representative ofce.

2. Noise level is measured at 1.5m front, under full-load operation in an anechoic room. It may vary in different
operation conditions or envir

onments.

3. It is necessary to install an air receiver tank for 5.5kW and above models to reduce ON-OFF frequency.
For 2.2/3.7kW models, it is also r

ecommended to install an additional air receiver tank.

4. External dimensions indicate the package panel ONLY, NOT including protruding objects such as
discharge outlet.

5. Ambient temperatur

e must be between 0 (at which there is no freeze of drain water) and 40°C.

6. 1.0MPa model is optional for all models except for 3.7kW. Refer ( ) for corresponding data.

7. Hitachi air compressors are not designed, intended or approved for breathing air applications.

8. Motors start with full voltage and on 3 phase source.

Control

Method

Motor
Nominal
Output

Model

Compressor

Air Outlet

Air Tank Volume

External Dimensions

(WxDxH)

Weight

Noise
Level

Max Pressure

ON-OFF Control Pressure

0.8 MPa 0.85 MPa 1.0 MPa

Capacity at Maximum Pressure

kW - MPa MPa PSIG MPa PSIG MPa PSIG L/min CFM L/min CFM L/min CFM - L mm Kg dB(A)

P-Mode

2.2

3.7

SRL-2.2MB5A

SRL-3.7MB5A

0.85 (1.0)

0.85

0.85 (1.0)

0.8 (1.0)

-

-

-

-

-

-

0.65-0.85

94 -123

0.8 - 1.0

-

0.8 - 1.0

116 -145

-

116 -145

-- -

-

240

400

8.5 200

7

-

Rc 3/8 Stop

Value x 1

18

24

680 x 640 x 1,030

750 x 715 x 1,070

129

1754647

5.5

SRL-5.5MB5A

-

- 600 21 500 18

24

(Necessary for additional

air receiver talk)

184 50

Multi­Drive/

P-Mode

7.7

SRL-7.5MB5A

0.65 - 0.8 94 - 116

-

- 0.8 - 1.0

116 -145

880 31 - - 700 25

Rc3/4 x 1

-

960 x 660 x 1,190

315 (312) 57

11

SRL-11MB5A

1,260 45 - - 1,000 35

350 (344) 59

16.5

22

SRL-15MB5A

SRL-22MB5A

1,890

2520

67

89

- - 1,500

2000

53

R1 x 1

1,280 x 770 x 1,450

1,330 x 880 x 1,900

515 (506)

720 (708)6161

0.8 MPa 0.85 MPa 1.0 MPa

14

- -

70.6