Industrial Titanium Dry Screw Vacuum Pumps
Discover Ever-Power’s LGB-D Series: The ultimate Oil‑Free Dry Screw Vacuum Pump for industrial applications. Featuring robust corrosion resistance, energy efficiency, and high vacuum capabilities for chemical, pharmaceutical, and semiconductor processing. Get a quote for our sustainable vacuum solutions today.
The next generation of High Vacuum Dry Screw Pump technology. Engineered for zero contamination, superior chemical resistance, and maximum energy efficiency in the most demanding industrial environments.
Product Overview: The Oil-Free Revolution
In the evolving landscape of industrial manufacturing, the demand for clean, consistent, and environmentally friendly vacuum generation is paramount. Ever-Power presents the LGB-D Series, a premier Oil‑Free Dry Screw Vacuum Pump designed to replace traditional oil-sealed mechanical pumps, liquid ring vacuum pumps, and reciprocating systems.
Working Principle:
The core technology utilizes a pair of variable pitch meshing screws that rotate synchronously at high speeds in opposite directions within a precision-machined pump casing. This action generates a powerful pumping mechanism of tens or sixteen strokes per rotation. Crucially, the two screws undergo precise dynamic balancing and are supported by heavy-duty bearings installed externally to the pumping chamber.
A calculated, minute clearance exists between the screws and the casing, ensuring no metal-to-metal contact. This design allows the Industrial Dry Screw Vacuum Pump to remove gases containing large amounts of condensable vapors, solvents, and dust without the need for sealing fluids that degrade or contaminate the process.
Technical Performance Specifications
Review the specifications below to select the ideal High Performance Dry Screw Vacuum Pumps for your facility.
| Model | Unit | LGB-70D | LGB-110D | LGB-150D | LGB-180D | LGB-200D |
|---|---|---|---|---|---|---|
| Pumping Speed (50Hz) | L/s | 70 | 110 | 150 | 180 | 200 |
| m³/h | 250 | 400 | 540 | 650 | 720 | |
| Ultimate Pressure | Pa | 50 | 50 | 50 | 50 | 50 |
| Max Discharge Pressure | bar | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 |
| Motor Power (50Hz) | Kw | 7.5 | 11 | 18.5 | 18.5 | 18.5 |
| Speed (50Hz) | rpm | 2940 | 2940 | 2940 | 2940 | 2940 |
| Inlet Diameter | mm | 65 | 65 | 100 | 100 | 100 |
| Outlet Diameter | mm | 65 | 65 | 80 | 80 | 80 |
| Cooling Water Flow | L/min | ≥13 | ||||
| Cooling Water Pressure | Mpa | 0.2 ~ 0.35 | ||||
| Noise | dB(A) | 75 | 78 | 80 | 80 | 80 |
| Weight (Incl. Silencer) | kg | 475 | 570 | 865 | 880 | 900 |
Key Features & Advanced Engineering
Zero Contamination (Oil-Free)
The Oil-free pump chamber prevents contamination of the vacuum system. This is a critical requirement for a Dry Screw Vacuum Pump for Semiconductor Manufacturing or pharmaceutical lines where purity is non-negotiable.
Environmental & Cost Efficiency
Solves common issues like oil emulsification and frequent working fluid changes. By eliminating oil disposal costs, this Energy Efficient Dry Screw Vacuum Pump offers a lower total cost of ownership compared to oil-sealed pumps.
Versatile Gas Handling
Capable of pumping large amounts of water vapor and dust. With optional accessories and coatings, it functions as a robust Dry Screw Vacuum Pump for Chemical Processing, handling flammable, explosive, and corrosive gases safely.
System Scalability
While excellent for medium vacuum, it can be paired with a Roots pump housing to form an Oil-free medium vacuum pumping system, or a molecular pump for high vacuum applications, creating a complete Dry Screw Vacuum Pump System.
Optional Advanced Material Configurations
For extreme corrosive environments, we offer premium material upgrades similar to high-grade titanium series standards:
- Corrosion Resistance Options: TA2/TA10 grade material options or specialized coatings (Ni/PTFE) for screws and casings to resist aggressive chemical attack.
- Complex Scenario Readiness: Suitable for multiple scenarios, effectively handling complex working conditions involving acid vapors or solvent recovery.
- Skid-Mounted Solutions: Complete Dry Screw Vacuum Pump Solution for Research & R&D or production, configured with necessary piping, instrumentation, and control systems.
- Advanced Cooling: Patented internal cooling structure designs available for temperature-sensitive processes.
Typical Industrial Applications
Industrial Furnaces & Metallurgy
Essential for vacuum brazing, vacuum sintering, vacuum annealing, and gas quenching. In metallurgy, it is used for special steel smelting, vacuum desulfurization, and degassing.
Vacuum Coating
Provides the clean environment needed for vacuum evaporation coating, magnetron sputtering, continuous film winding coating, and ion plating.
Chemical & Pharmaceutical
Ideal Dry Screw Vacuum Pump for Freeze Drying Applications, product distillation, degassing, and material transport. The ability to recover solvents makes it a sustainable choice.
Electrical & Drying
Used in transformer drying, epoxy resin vacuum casting, and capacitor oil immersion. Also utilized for wood drying and vegetable freeze-drying operations.
Installation Dimensions (LGB-D Series)
External Dimensions (mm)
| Model | L0 | L1 | L2 | L3 | L4 | L5 | L6 | W0 | W1 | W2 | W3 | W4 | W5 | W6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LGB-70D | 1630 | 790 | 690 | 50 | 5 | 340 | 420 | 910 | 570 | 130 | 520 | 25 | 260 | 385 |
| LGB-110D | 1852 | 910 | 810 | 50 | 5 | 460 | 420 | 910 | 570 | 130 | 520 | 25 | 260 | 385 |
| LGB-150D | 1955 | 1020 | 920 | 50 | 35 | 520 | 433 | 1050 | 700 | 130 | 650 | 25 | 325 | 450 |
| LGB-180D | 1955 | 1020 | 920 | 50 | 35 | 520 | 433 | 1050 | 700 | 130 | 650 | 25 | 325 | 450 |
| LGB-200D | 1955 | 1020 | 920 | 50 | 35 | 520 | 433 | 1050 | 700 | 130 | 650 | 25 | 325 | 450 |
Mounting & Connection Dimensions (mm)
| Model | H0 | H1 | H2 | D1 | D2 | D3 | d1 | d2 | d6 | n1-φA | n2-φB | n3-φC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LGB-70D | 790 | 280 | 870 | 185 | 145 | 65 | 185 | 145 | 65 | 4-φ18 | 4-φ18 | 4-φ20 |
| LGB-110D | 790 | 280 | 870 | 185 | 145 | 65 | 185 | 145 | 65 | 4-φ18 | 4-φ18 | 4-φ20 |
| LGB-150D | 945 | 367 | 980 | 220 | 180 | 100 | 200 | 160 | 80 | 8-φ18 | 8-φ18 | 4-φ20 |
| LGB-180D | 945 | 367 | 980 | 220 | 180 | 100 | 200 | 160 | 80 | 8-φ18 | 8-φ18 | 4-φ20 |
| LGB-200D | 945 | 367 | 980 | 220 | 180 | 100 | 200 | 160 | 80 | 8-φ18 | 8-φ18 | 4-φ20 |
How to Select Your Dry Screw Vacuum Pump
Choosing the right pump ensures longevity and efficiency. Consider the following:
- Gas Composition: If the gas is corrosive (acidic/alkaline), inform us immediately so we can recommend the appropriate anti-corrosion coating (e.g., Nickel, PTFE) or material grade.
- Solvent Recovery: For applications requiring the recovery of valuable solvents, a Dry Screw Vacuum Pump System is far superior to liquid ring pumps as it avoids contamination of the solvent with seal fluid.
- Pumping Speed Requirement: Calculate your chamber volume and desired cycle time. Our LGB-D series ranges from 70 L/s to 200 L/s.
- Vacuum Level: For high vacuum needs (<1 Pa), consider using the LGB screw pump as a backing pump for a Roots booster in a Dry Screw Vacuum Booster Pump System.
Voice of the Customer
"We switched from oil-sealed pumps to the Ever-Power LGB-150D for our pharmaceutical drying process. The elimination of oil back-streaming has significantly improved our product purity, and the maintenance costs have dropped by 40%."
— Production Manager, BioPharma Solutions Inc.
"Excellent Industrial Vacuum Solutions Dry Screw Vacuum Pumps. We use them in our vacuum coating line. The pump handles the dust load surprisingly well, and the service from Ever-Power regarding the spare parts and accessories has been top-notch."
— Plant Engineer, Advanced Coatings Ltd.
Frequently Asked Questions (FAQ)
1. What is the difference between a dry screw pump and a claw pump?
While both are dry pumps, screw pumps use two meshing screws that allow for a continuous, straight gas path. This makes Dry Screw Vacuum Pumps better suited for handling dust and condensable vapors compared to claw pumps, which have a more complex gas path where particulates can get trapped.
2. Do I need to flush the pump after usage?
If you are pumping corrosive gases or vapors that might crystallize upon cooling, it is highly recommended to purge the pump with nitrogen or dry air for 15-20 minutes before shutting it down. This clears the pump chamber and extends the life of your Low Maintenance Dry Screw Vacuum Pump.
3. Can the LGB series be used for pumping explosive gases?
Standard models are not explosion-proof. However, we can customize the unit with explosion-proof motors and specific mechanical seals to meet ATEX or local safety standards for pumping flammable gases. Please contact us for these specific requirements.
4. What kind of cooling does this pump require?
The LGB-D series utilizes water cooling to manage the heat generated by compression. The required flow rate is generally ≥13 L/min depending on the model. We also offer Air or Water‑Cooled Dry Screw Vacuum Pumps designs upon request for specific installation environments.
5. How often do I need to change the gear oil?
Since the oil is only in the gear box and not exposed to the process gas, it lasts much longer than in oil-sealed pumps. Typically, we recommend checking the oil level weekly and changing the gear oil every 3,000 to 5,000 running hours, depending on the operating load.
Ready to Upgrade Your Vacuum System?
Get in touch with Ever-Power for a customized Dry Screw Vacuum Pump Solution tailored to your industry needs.
Additional information
| edited | by hyw |
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Product Quick Detail:
- Standard and non-standard available
- With high quality and competitive price
- Prompt delivery
- Packing as per customer’s demand.
We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.
Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.
Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port
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