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 |
Starters type DLA
Düsterloh Fluidtechnik |
|
Displace- |
Starting |
Admissible |
Pmax and n=2000 |
Connec- |
Weight |
|
Power |
Air-con- |
|||||||
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- |
Starting |
Admissible |
Pmax and |
Connec- |
Weight |
|
Power |
Air-con- |
||||||
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- |
Torque |
speed rpm |
Operating |
Power |
Air-con- |
|||
starting |
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- |
Torque |
speed rpm |
Operating |
Power |
Air-con- |
|||
starting |
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
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
Axdial piston motors with wobble plate
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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