Roots pump: DMBseries
DMB600 
•Features 
• lightweight
and compact design
• large evacuation speed
with small capacity motor
(energysaving)
• clean vacuum available
due to no oil used in rotor part
• no influence on evacuation
characteristics if condensing gas is inlet 
•Application to: 
• vacuum
drying that inhales large amount of condensing
gas
• large capacity tank to
be highly evacuated in short time
(space chamber, various rough evacuation, etc.)
• various vacuum furnace
systems (middle to large sized), etc. 

•Product specification 
Model 
DMB100 
DMB300 
Nominal
evacuation speed 50/60Hz m^{3}/h 
90/110 
250/300 
Allowable
pressure difference 50/60Hz kPa 
9.3/8 
9.3/8 
Final
pressure Pa 
7 X 10^{2} 
7 X 10^{2} 
Evacuation
speed of auxiliary pump L/min(m^{3}/h) 
300(18) to 600(36) 
600(36) to 1650(99) 
Rotating
speed 50/60Hz min1 
3000/3600 
3000/3600 
Driving
system 
direct
coupling to motor 
direct
coupling to motor 
Required
power kW 
200V X 3ф X 0.4kW 
200V X 3ф X 1.5kW 
Oil
volume L 
0.35 
1.0 
Cooling
water volume L/min 
1 
Aircooling 
Mass
kg 
25 
100 
Exterior
dimension drawing 
[PDF] [DXF] 
[PDF] [DXF] 

Model 
DMB600 
DMB1500 
Nominal
evacuation
speed 50/60Hz m^{3}/h 
500/600 
1350/1630 
Allowable
pressure difference 50/60Hz kPa 
9.3/8 
9.3/8 
Final
pressure Pa 
7 X 10^{2} 
7 X 10^{2} 
Evacuation
speed of auxiliary pump L/min(m^{3}/h) 
1500(90) to 3650(220) 
3650(220) to 7500(450) 
Rotating
speed 50/60Hz min1 
1500/1800 
1500/1800 
Driving
system 
direct
coupling to motor 
direct
coupling to motor 
Required
power kW 
200V X 3ф X 2.2kW 
200V X 3ф X 5.5kW 
Oil
volume L 
2.8 
4.2 
Cooling
water volume L/min 
7 
7 
Mass kg 
250 
510 
Exterior
dimension drawing 
[PDF] [DXF] 
[PDF] [DXF] 

Model 
DMB2500 
DMB6000 
Nominal
evacuation speed 50/60Hz m^{3}/h 
2070/2500 
6000 
Allowable
pressure difference 50/60Hz kPa 
6.7/5.3 
4.7 
Final
pressure
Pa 
7 X 10^{2} 
7 X 10^{2} 
Evacuation
speed of auxiliary pump L/min(m^{3}/h) 
7500(450) to 10000(600) 
10000(600) to 15000(900) 
Rotating
speed 50/60Hz min1 
1500/1800 
1200 
Driving
system 
direct
coupling to motor 
driven
by Vbelt 
Required
power kW 
200V X 3ф X 5.5kW 
200V X 3ф X 11kW 
Oil
volume L 
5.6 
2.5 
Cooling
water volume L/min 
7 
18 
Mass kg 
670 
1060 
Exterior
dimension drawing 
[PDF] [DXF] 
[PDF] [DXF] 

*As for vacuum switch, setting pressure is 2.7kPa
as standard. (option)
Unified production together with KRPseries is also available.
*As for exterior shape, specification shall be subject
to change without prior notice for improvement. 

