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The IDS Series is an oil-free dry screw vacuum platform for demanding industrial processes where cleanliness, reliability, energy efficiency and continuous-duty performance matter.
Available as the IDS 850 and IDS 1100, the range provides pumping speeds up to 1030 m³/h and ultimate vacuum down to 0.003 mbar.
The Elmo Rietschle IDS is an oil-free dry screw vacuum pump designed for process-critical industrial applications. The IDS 850 provides up to 810 m³/h pumping speed, while the variable-speed IDS 1100 provides up to 1030 m³/h and an ultimate vacuum of 0.003 mbar.
Industrial vacuum systems are often sized around peak conditions, accumulated safety margins or production requirements that no longer represent the way the plant actually operates.
The result can be excess installed capacity and unnecessary energy consumption. The correct approach is to determine the vacuum level, pumping speed and duty cycle that the process genuinely requires, then select and control the vacuum equipment around that requirement.
Industrial process gases do not always remain clean. Vapours can condense or form solids, deposits can build up inside mechanisms, and conventional unloading valves can become unreliable.
Elmo Rietschle addresses this with a valve-free compression design intended to improve stable operation in demanding process environments.
The IDS is an oil-free dry screw vacuum pump developed for process-critical applications where clean operation, uptime, operating cost and long-term reliability are important.
Because the compression chamber operates without oil, the IDS is suitable for applications where oil contamination of the process must be avoided.
Elmo Rietschle combines precision-machined screw geometry, controlled internal temperatures, robust shaft support and air- or water-cooled motor options within the IDS platform.
The IDS combines oil-free dry screw technology with features designed around efficiency, continuous duty and demanding process conditions.
No oil is used in the compression chamber, supporting clean process-vacuum applications.
The compression design eliminates the conventional unloading valve and the associated risk of deposit-related problems.
The IDS is designed with process vapours and condensation in mind.
The pump is engineered for industrial environments where process contamination may be present.
Advanced screw geometry provides high pumping speed and deep ultimate vacuum across a broad operating range.
IDS is designed for integration into industrial process equipment and engineered OEM vacuum systems.
The IDS uses several engineering features aimed at maintaining efficient and predictable performance during continuous industrial duty.
Precision-machined screw geometry supports high pumping speed and deep ultimate vacuum across a wide operating range.
The IDS 1100 uses variable-speed drive technology to match pump speed to demand. Elmo Rietschle states this can reduce energy consumption by up to 50%.
Optimised screw pitch reduces internal heat, helping component life and supporting reliable continuous operation.
Shaft-support bearings at both ends provide robust support during sustained industrial operation.
Both IDS models are available with air- or water-cooled motor configurations. The standard configuration is water cooled.
The complete package is engineered for continuous industrial operation and predictable process behaviour.
The IDS 850 is a fixed-speed model with a maximum pumping speed of 810 m³/h. The IDS 1100 is variable speed, reaches 1030 m³/h and provides a deeper ultimate vacuum of 0.003 mbar.
| Specification | IDS 850 | IDS 1100 |
|---|---|---|
| Maximum pumping speed | 810 m³/h | 1030 m³/h |
| Maximum pumping speed | 476 ft³/min | 606 ft³/min |
| Ultimate vacuum | 0.03 mbar | 0.003 mbar |
| Motor power | 18.5 kW | 18.5 / 22 kW |
| Maximum rotational speed | 3000 rpm | 3600 rpm |
| Motor type | Fixed speed | Variable speed |
| Motor cooling | Air / Water | Air / Water |
| Dimensions | 1700 × 650 × 750 mm | 1700 × 650 × 750 mm |
| Weight | 909 kg | 909 kg |
| Inlet | ISO100 | ISO100 |
| Outlet | ISO65 | ISO65 |
| Cooling water flow | 15–20 L/min | 15–20 L/min |
| Cooling water temperature | 5–35°C | 5–35°C |
| Noise | 80 ±3 dB(A) | 80 ±3 dB(A) |
| Ambient temperature | 5–46°C | 5–46°C |
| Maximum exhaust back pressure | 200 mbar(g) | 200 mbar(g) |
Elmo Rietschle identifies glass coating, food and beverage, electronics, coating, materials processing and engineered OEM systems as key application areas for the IDS.
Both the IDS 850 and IDS 1100 have overall dimensions of 1700 × 650 × 750 mm and a published weight of 909 kg.
Both models use an ISO100 inlet and ISO65 outlet. Air- and water-cooled motor configurations are available, allowing the pump to be integrated around the requirements of the installation.
CompreVac can review the complete system including vacuum demand, piping, cooling, process conditions and control strategy before equipment selection.
Vacuum pump selection should start with the process rather than simply comparing maximum pump capacities.
Required vacuum level, gas load, operating cycle, vapour content, contamination, cooling conditions and daily operating hours all affect the correct equipment choice.
CompreVac can evaluate those conditions and determine whether the IDS 850, IDS 1100 or another vacuum technology is the appropriate solution.
Answers to common technical questions about the IDS 850 and IDS 1100 oil-free dry screw vacuum pumps.
The IDS Series is a range of oil-free dry screw vacuum pumps designed for process-critical industrial applications. The range consists of the IDS 850 and IDS 1100.
Yes. The IDS uses oil-free dry screw technology, so no oil is used in the compression chamber. This makes it suitable for clean process-vacuum applications where oil contamination needs to be avoided.
The IDS 850 is a fixed-speed 18.5 kW model with a maximum pumping speed of 810 m³/h and ultimate vacuum of 0.03 mbar. The IDS 1100 is variable speed, provides up to 1030 m³/h, reaches 0.003 mbar ultimate vacuum and is available with an 18.5 kW or 22 kW motor.
Elmo Rietschle states that variable-speed drive technology can match pump speed to process demand and reduce energy consumption by up to 50%. Actual savings depend on the application, operating conditions and existing vacuum system.
The IDS 850 has a published ultimate vacuum of 0.03 mbar. The IDS 1100 reaches a deeper published ultimate vacuum of 0.003 mbar.
The IDS 850 provides a maximum pumping speed of 810 m³/h or 476 ft³/min. The IDS 1100 provides up to 1030 m³/h or 606 ft³/min.
Industrial gases can contain vapours, solids and deposits that can affect conventional unloading valves. The IDS uses a valve-free compression design to remove this potential source of process-related reliability problems.
The IDS brochure specifically identifies anti-condensation design and dust tolerance as features intended for demanding real-world industrial processes. Final suitability should always be confirmed for the specific gas and process conditions.
Both IDS models are available with air- or water-cooled motor configurations. Elmo Rietschle lists water cooling as the standard configuration, with air cooling available on request.
Published IDS applications include architectural and automotive glass coating, PVD and sputter coating, load-lock chambers, freeze drying, beverage bottle filling, drying and process vacuum, electronics manufacturing, metallurgy, materials processing and engineered OEM vacuum systems.
Both the IDS 850 and IDS 1100 are listed at 1700 × 650 × 750 mm and 909 kg.
The Elmo Rietschle IDS Dry Screw Vacuum Pump brochure can be downloaded directly from CompreVac using the brochure button on this page.
CompreVac can review your required vacuum level, pumping speed, process gas, contamination, operating cycle and cooling conditions before recommending equipment.
Operating Principle
In S-Series screw vacuum pumps compression is achieved by internal volume contraction. A screw vacuum pump consists of two screws, one with a right-hand thread and the other with a left-hand thread. Both screws turn in the compression housing without friction with very tight clearances. They are synchronised via a precision gear methodology.
The compression housing and the special shape of the screws form the compression chambers. Due to the opposite rotation of both screws the chamber connected with the suction port is enlarged and the gas is transported into the compression chamber. Then the chamber moves axially from the suction side to the pressure side (arrow). During this transportation the mass of the gas in the chamber increases.On the pressure side the chamber is moved against the axial housing wall and the volume is reduced until the front surface of the screw opens the pressure channel and the pre-compressed gas is discharged through the pressure connection. Cooling is achieved using a water cooled outer chamber. For some pump sizes additional cooling gas can be introduced into the pump.
Please contact CompreVac for application assistance with vacuum pumps and associated equipment.
