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D?sterloh Fluidtechnik

Düsterloh Fluidtechnik  Pneumatic motors

 

Type series PMW160 – PMW530
Pneumatic motors with exhaust air throttle
Vg = 160 cm³/rev - 530 cm³/rev

 

Type series DMO
Toothed wheel motorsPneumatic motors with speed limiter
Vg = 883 cm³/rev - 2394 cm³/rev

 

Type series DMO Gear motors
Pneumatic motors with speed limiter and gear-box
Vg = 1695 cm³/rev - 6585 cm³/rev

 

Accessories
For a wide range of uses for pneumatic motors.

some examples

 

Ball cock

In the event of longer periods of standstill, the closed ball cock prevents leak losses to the following components and at the motor's control slide. It allows servicing to be carried out on the motor and the upstream components.

 

Socket dirt trap

To protect the valve units from soiling
Thread connection G1, G1½, G2
Housing made of nickel-plated brass
Stainless steel strainer
Mesh width 0.25 mm

 

Oiler

The oiler is mounted in the pneumatic pipe and supplies the working air with an oil mist for lubrication and avoidance of corrosion of the control slide, the rotors and bearings.

 

Exhaust throttle and sound absorbers

The exhaust throttle can be used to throttle the exhaust air flow from the pneumatic motor, to reduce and adjust the motor speed.

The sound absorber with axial air outlet combines the requirements:

-          high blow-off quantity

-          short ventilation time

-          high sound absorption

It reduces the sound pressure level by approx. 10 to 15 dba

 

Maintenance unit

Comprises a humidity separator, pressure-reducing valve and oiler, and is situated between the ball cock and motor inlet.

The water separator in the water level indicator filters humidity out of the air in order to prevent icing up after air expansion in the motor casing and at the air outlet during permanent operation.

The working pressure, which should be as constant as possible, is set at the pressure-reducing valve. The oiler with oil level indicator supplies the working air with an oil mist for lubrication and avoidance of corrosion of the control slide, the rotors and bearings.

 

Spring pressure disc brake

The standstill holding brake keeps the drive in position under load with a pressure-less pneumatic motor.

It is opened pneumatically through a valve (4 bar) and closed using spring force when the pneumatic pressure is switched off.

 

 

 

Coupling

A pneumatic coupling is used e.g. with emergency drives which are not designed to run all the time. In an emergency, the coupling is switched automatically and the pneumatic motor takes over the drive through the non-positive connected coupling. The coupling is opened using spring force and becomes non-positive under pneumatic pressure which is tapped from the measuring connections of the pneumatic motor.

As soon as the pneumatic motor delivers its torque, the coupling switches.

 

Planetary gears

Standard planetary gears can be connected downstream from the pneumatic motor. In terms of design, these coaxial gears are much smaller than the pneumatic motor and have very tight gear stages.

1-stage i= 3.08 - 7.25

2-stage i= 10.04 - 50.30

3-stage i= 60.00 - 320.00

 

 

Bevel helical gear

Bevel helical gears have an outlet offset by 90° to the pneumatic motor. With the outlet shaft either on the right, left or on both sides. Since the outlet is at a right angle, the pneumatic motor is at a right angle to the drive axis, whereby the design length (coaxial) is shortened.

Bevel helical gears have to be attached to the frame like the pneumatic motor for reasons of weight.

i= 4.4 - 730

 

 

Pneumatic switch cabinet

For applications with the pneumatic toothed wheel motors type DMO..., we have complete pneumatic control units available which are designed according to your requirements.

 

For example a pneumatic switch cabinet for an emergency function, to automatically put a furnace into the safety range through the pneumatic toothed wheel motor in the event of a main drive failing. All switching functions are available redundant to guarantee safety if a valve fails.

The final safety function is emergency manual operation which is also available.

 
 

 

 

Düsterloh Fluidtechnik Pneumatic Starters

Main features of the Düsterloh-Starters

• Power-range of the starters between 4,7 kW and 70 kW
• For diesel-engines up to 8500 kW (double-start up to 17000 kW)
• Each start is a successful start
• Torques between 31 Nm and 510 Nm
• By needs of higher start-power the starters are working parallel
• Low air consumption between 5,6 and 62 m3 per minute
• Electrical or pneumatic remote control and/or manual respectively emergency operation
• Due to SAE J 542 C standard flanges the pneumatic starters can be exchanged with
  electrical starters
• Slow-Turn-facilities for draining cubic capacities under pressure for getting exact
  piston-position at inspections
• Air- and gas-operation
• Experience shows high life spans also under extreme climatical conditions, like in
  the tropics, the arctic, desert areas or in the off-shore field
• Independant from electrical energy-systems
• No oiler needed
• Maintenance-free
• Explosion-secure

 

Starters type DLA

Düsterloh Fluidtechnik



Type

Displace-
ment.
Vg

Starting
Torque
at Pmax

Admissible
Pressure
Pmax

Pmax and n=2000
 min-1

Connec-
tion

Weight

Power

Air-con-
sumption

cc/rev

Nm

bar

kW

Nm³/min

Inch

kg

 

Düsterloh Fluidtechnik

DLA 2,5

500

53

8

8

9,7

G 1

20,5

Düsterloh Fluidtechnik

DLA 2,5V

710

80

8

13

13,5

G 1

21

 

Starters type PS

Düsterloh Fluidtechnik

Displace-
ment
Vg

Starting
Torque
at Pmax

Admissible
Pressure
Pmax

Pmax and
n=2000 min-1
(* n=2500 min-1)

Connec-
tion

Weight

Power

Air-con-
sumption

cc/rev

Nm

bar

kW

Nm³/min

Inch

kg

 

Düsterloh Fluidtechnik

PS 500

500

53

8

8

9,7

G 1

24,5

Düsterloh Fluidtechnik

PS 710

710

80

8

13

13,5

G 1

25,5

Düsterloh Fluidtechnik

PS 850 HY

850

190

15

25 *

31 *

G 1 1/2

34

Düsterloh Fluidtechnik

PS 1250 HY

1250

285

15

38 *

40 *

G 1 1/2

36

Düsterloh Fluidtechnik

PS 2360 HY

2360

510

15

70

62

G 2

52

 

Motor type PMW

Düsterloh Fluidtechnik

Dis-
place-
ment

Torque
6 bar,
nominal  rpm

speed rpm

Operating
Pressure

Power
6 bar
nominal
Pressure

Air-con-
sumption
6 bar
nom.press

starting
min-max

nominal

nominal pressure

max.

perm

max.

 

cc/rev

Nm

Nm

min-1

min-1

bar

bar

kW

m³/min

 

Düsterloh Fluidtechnik

PMW 160

160

10-15

9,0

3000

5000

6

10

2,8

3,9

Düsterloh Fluidtechnik

PMW 250

250

16-24

15,0

3000

5000

6

10

4,7

6,0

Düsterloh Fluidtechnik

PMW 400

400

23-34

21,0

3000

5000

6

10

6,6

8,4

Düsterloh Fluidtechnik

PMW 530

530

30-43

27,0

3000

5000

6

10

8,5

12

 

Motor type DMO

Düsterloh Fluidtechnik

Dis-
place-
ment

Torque
6 bar,
nominal  rpm

speed rpm

Operating
Pressure

Power
6 bar
nominal
Pressure

Air-con-
sumption
6 bar
nom.press

starting
min-max

nominal

nominal pressure

max.

perm

max.

cc/rev

Nm

Nm

min-1

min-1

bar

bar

kW

m³/min

 

Düsterloh Fluidtechnik

DMO 8

883

62-71

57

1500

3000

6

8

9

11

Düsterloh Fluidtechnik

DMO 15

1431

115-131

105

1500

3000

6

8

16,5

18

Düsterloh Fluidtechnik

DMO 20

2394

181-207

165

1500

3000

6

8

26

27

Düsterloh Fluidtechnik

DMO 35

3826

315-357

286

1500

3000

6

8

45

45

Düsterloh Fluidtechnik

DMO 56

6116

462-527

420

1500

3000

6

8

66

66

 

Düsterloh Fluidtechnik Hydraulic motors 

 

Type series AE3 – AE45

Axial piston motors with swashplate
Vg = 2,86 cm³/rev - 45,0 cm³/rev

 

Type series KM11 - KM110

Radial piston motors with polygon ring and gap ring control
Vg = 11,1 cm³/rev - 109,5 cm³/rev

 

Type series RM80N - RM250N

Radial piston motors with polygon ring and clearance adjusting control
Vg = 80,4 cm³/rev - 251,3 cm³/rev

 

Type series RM250X - RM900X

Radial piston motors in piston/connecting-rod-design
Vg = 255 cm³/rev - 904 cm³/rev

 

Type series RM1000X - RM5000X

Radial piston motors in piston/connecting-rod-design
Vg = 1047 cm³/rev - 5278 cm³/rev

 

High precision motors RMHP90 - RMHP110

Radial piston motors with polygon ring and gap ring control

 

High precision motors AEHP40

Axdial piston motors with wobble plate

 

Gears + brakes

Single and multiple-stage coaxial and angular gears for increasing torque, as well as spring pressure disc brakes for holding static loads.

 

Flow distributors Type series RM22 - RM1250X

Arrangement of several coupled radial piston motors for the precise distribution of the hydraulic oil flow.

 

 

Accessories

For use in a wide range of application variants with hydraulic motors.

some examples

 

Oil surge tank with oil level control

Coaxial or angular gears have to be completely filled with oil when installed vertically.

During the filling process, an air bubble can form in the upper part on the level of the shaft seal, this air bubble has to be eliminated to prevent insufficient lubrication taking place. Since the oil volume increases as temperature increases, a surge tank with oil level control and ventilation filter has to be installed as a compensation measure. This prevents damaging excess pressure inside the gear.

 

 

Torque fittings

Slip-on gear mechanisms are attached to the drive shaft using shrink discs. They are not flanged on rigidly, rather supported "softly" with the aid of torque fittings. This means that no angular offset can occur, which leads to additional bending torque and an increased load on the gear mechanism. The attachment point of the torque support should be able to move freely in the longitudinal direction of the shaft. In the tangential direction, cushioning elements are provided to reduce the impact load.

 

Shrink discs

Shrink discs are removable shaft to collar connections. They are used with gear motors of the slip-on type. They are resistant to dirt, have no moving parts and are thus not subject to any wear. They offer the advantage of absolute freedom from play, particularly in the case of reversing operation.

 

Pressure protection with directly actuated pressure control valves

Two separately adjustable pressure control valves for both direction of rotations protect the drive from excess load. Two return valves 0.2 bar are used to feed the occurring leak back in again externally to prevent motor cavitation.

 

Pressure protection with directly actuated pressure control valves and valve connection

With this block design, directional control valves, proportional or servo valves with connection according to DIN24340 form A6 or A10 are screwed directly to the motor. Favourable control or regulating behaviour is achieved thanks to the small volume of oil enclosed. A connection plate with two different hole patterns makes it possible to attach valves for motor control or regulation and brake control. Two separately adjustable pressure control valves protect the drive from excess load.

 

Rotary encoders

Incremental rotary encoders, rotary pulse encoders or absolute rotary encoders are terms used to describe sensors used for recording changes in position, which can be both rotary angle and direction of rotation. Incremental rotary encoders have a material measure with a repeating, periodic count track. The measurement is based on determination of direction and a count.

The rotary encoders are usually attached to the measuring shaft side of the hydro motor using a mounting dome and an elastic coupling. There are rotary encoders in slip-on versions available for particularly tight spaces, with a kind of compact-design torque support.

 

Also other accessories

Back cover  59.750410.01

 

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