Premium Dry Screw Pumps For Sale
Ever-Power Oil-Free Dry Screw Vacuum Pumps offer superior efficiency for industrial furnaces, chemical processing, and semiconductor manufacturing. Featuring the LGB-D, G/H, and Z series, our pumps deliver high vacuum performance with low maintenance. Explore our corrosion-resistant, energy-saving vacuum solutions today.
Standard Industrial Performance
Performance Parameters
| Performance Parameter | Model LGB-70X-Z | Model LGB-110A-Z | Model LGB-180A-Z | Model LGB-230A-Z | Model LGB-300-Z |
|---|---|---|---|---|---|
| Pumping Speed (50Hz) (L/s) | 70 | 110 | 180 | 230 | 300 |
| Ultimate Total Pressure (50Hz) (Pa) | 5 | 5 | 5 | 5 | 5 |
| Max. Exhaust Pressure (bar) | 1.2 | 1.2 | 1.2 | 1.2 | 1.3 |
| Motor Power (50Hz) (kW) | 5.5 | 7.5 | 15 | 18.5 | 30 |
| Speed (50Hz) (rpm) | 2900 | 2900 | 2940 | 2950 | 2950 |
| Inlet Connection (mm) | 65 | 65 | 100 | 100 | 150 |
| Outlet Connection (mm) | 40 | 50 | 65 | 65 | 100 |
| Cooling Water Flow (L/min) | 10 | 12 | 13 | 13 | 20 |
| Pressure (MPa) | 0.2~0.35 | 0.2~0.35 | 0.2~0.35 | 0.2~0.35 | 0.2~0.35 |
| Outlet Water Temp. (℃) | ≤40 | ≤40 | ≤40 | ≤40 | ≤40 |
| Connection Port (mm) | 16 | 16 | 16 | 16 | 16 |
| Noise Level (dB(A)) | ≤75 | ≤76 | ≤76 | ≤78 | ≤85 |
| Grease Inlet Side (L) | 0.2 | 0.3 | 0.3 | 0.3 | 0.5 |
| Grease Outlet Side (L) | 0.8 | 1.2 | 1.8 | 1.8 | 3.4 |
| Nitrogen System Pressure (MPa) | 0.05 | 0.05 | 0.06 | 0.06 | 0.07 |
| Flow Rate (L/min) | 25-30 | 30-35 | 35-40 | 35-40 | 40-45 |
| Weight (Incl. Exhaust Tank) (kg) | 293 | 475 | 710 | 757 | 1142 |
External Installation Dimension Table LGB-110A-Z ~ LGB-230A-Z
Model: LGB-110A-Z
| Parameter | Value | Parameter | Value | Parameter | Value |
|---|---|---|---|---|---|
| L0 | 1373 | W0 | 710 | H0 | 655 |
| L1 | 787 | W1 | 435 | H1 | 645 |
| L2 | 707 | W2 | 207 | D1 | 145 |
| L3 | 40 | W3 | 395 | D2 | 125 |
| L4 | 15 | W4 | 20 | D3 | 65 |
| L5 | 460 | W5 | 197.5 | d1 | 110 |
| L6 | 162 | W6 | 325 | d2 | 90 |
| n1-ØA | 4-Ø10 | d3 | 50 | ||
| n2-ØB | 4-Ø20 | n3-ØC | |||
| E | G1/2" | ||||
Model: LGB-180A-Z
| Parameter | Value | Parameter | Value | Parameter | Value |
|---|---|---|---|---|---|
| L0 | 1572 | W0 | 805 | H0 | 730 |
| L1 | 922 | W1 | 500 | H1 | 683 |
| L2 | 842 | W2 | 270 | D1 | 170 |
| L3 | 40 | W3 | 460 | D2 | 145 |
| L4 | 45 | W4 | 20 | D3 | 100 |
| L5 | 520 | W5 | 230 | d1 | 145 |
| L6 | 185 | W6 | 376 | d2 | 125 |
| n1-ØA | 8-Ø12 | d3 | 65 | ||
| n2-ØB | 4-Ø20 | n3-ØC | |||
| E | G3/4" | ||||
Model: LGB-230A-Z
| Parameter | Value | Parameter | Value | Parameter | Value |
|---|---|---|---|---|---|
| L0 | 1647 | W0 | 810 | H0 | 730 |
| L1 | 1002 | W1 | 500 | H1 | 683 |
| L2 | 902 | W2 | 270 | D1 | 170 |
| L3 | 50 | W3 | 460 | D2 | 145 |
| L4 | 35 | W4 | 20 | D3 | 100 |
| L5 | 595 | W5 | 230 | d1 | 145 |
| L6 | 185 | W6 | 376 | d2 | 125 |
| n1-ØA | 8-Ø12 | d3 | 65 | ||
| n2-ØB | 4-Ø20 | n3-ØC | |||
| E | G3/4" | ||||
Product Overview: Engineering Excellence
At Ever-Power, we redefine vacuum technology with our advanced series of dry screw pumps. Designed to replace outdated oil-sealed mechanical pumps, liquid ring pumps, and reciprocating systems, our pumps represent the future of clean industrial processing.
The core mechanism of our Industrial Dry Screw Vacuum Pump utilizes a pair of high-precision meshing screws. These rotors rotate synchronously at high speeds in opposite directions within a robust pump casing. Through a sophisticated design, they generate a powerful pumping action of tens or sixteen strokes per revolution.
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 contact-free design allows the pump to remove gases containing large amounts of condensable vapors, solvents, and dust without the need for internal lubrication, making it a truly High Vacuum Dry Screw Pump.
Features & Operational Advantages
Pure Oil-Free Operation
The oil-free pump chamber prevents contamination of the vacuum system. This solves critical issues such as oil emulsification, frequent working fluid changes, and frequent maintenance, significantly saving operational costs.
Environmental & Efficient
Dry operation produces no oil or fumes, conserving petroleum resources. Our Energy Efficient Dry Screw Vacuum Pump is capable of pumping large amounts of water vapor and dust. With added accessories, it can also safely pump flammable, explosive, and corrosive gases.
Versatile System Integration
Excellent ultimate vacuum load. It can be paired with a Roots pump housing to form an oil-free medium vacuum pumping system, making it an ideal Dry Screw Vacuum Pump System for diverse industrial needs.
Corrosion Resistance
With an optional anti-corrosion coating, it is particularly suitable for applications such as product distillation, drying, and degassing in Dry Screw Vacuum Pump for Chemical Processing. (Note: For corrosive conditions, please contact our company).
Vacuum Furnace Series (Z-Series)
Specifically engineered for the vacuum furnace industry, featuring specialized designs for brazing, sintering, and annealing.
Performance Parameters (Z Series)
| Model | LGB70X-Z | LGB110A-Z | LGB180A-Z | LGB230A-Z | LGB300-Z |
|---|---|---|---|---|---|
| Pumping Speed (L/s) | 70 | 110 | 180 | 230 | 300 |
| Ultimate Pressure (Pa) | 5 | ||||
| Motor Power (kW) | 5.5 | 7.5 | 15 | 18.5 | 30 |
| Weight (kg) | 293 | 475 | 710 | 757 | 1142 |
Typical Applications
Industrial Furnaces
Perfect for vacuum brazing, vacuum sintering, vacuum annealing, gas quenching, and vacuum dehydroxylation. The oil-free nature eliminates the frequent oil changes associated with slide valve pumps.
Vacuum Coating
Used in vacuum evaporation coating, magnetron sputtering, continuous film winding coating, and ion plating where a clean vacuum environment is critical.
Chemical & Pharmaceutical
Reliable performance for product distillation, drying, degassing, and material transport. We also offer a specialized Dry Screw Vacuum Pump for Semiconductor Manufacturing.
Metallurgy & Power
Special steel smelting, vacuum induction furnaces, transformer drying, and epoxy resin vacuum casting.
Why Choose Ever-Power Dry Screw Pumps?
- 1. Industry-Specific Design: Equipped with a vacuum furnace industry design, solving the cumbersome problem of frequent oil changes associated with older pumps.
- 2. Online Cleaning: Supports online cleaning without the need for disassembly, reducing downtime significantly.
- 3. Robust & Safe: Safe, reliable, robust structure with Low Maintenance Dry Screw Vacuum Pump costs.
Customer Reviews
"We switched to Ever-Power's LGB-150D for our pharmaceutical drying process. The ability to handle solvents without oil contamination has been a game-changer. Highly recommended for anyone needing a clean vacuum."
- Production Manager, BioPharma Inc.
Frequently Asked Questions (FAQ)
1. What are the main benefits of a dry screw vacuum pump over an oil-sealed pump?
The primary benefit is the "oil-free" vacuum chamber. This eliminates oil back-streaming, prevents contamination of your product, and removes the cost and hassle of frequent oil changes and disposal.
2. Can these pumps handle corrosive gases?
Yes, with the appropriate configuration. We offer anti-corrosion coatings (like Ni or PTFE) for the screws and casing, making them suitable for chemical processing. Please contact us to specify your gas composition.
3. Do you offer systems for higher vacuum requirements?
Absolutely. The dry screw pump can be paired with a Roots pump or a molecular pump to form a complete Dry Screw Vacuum Pump System for medium to high vacuum applications.
4. What is the maintenance interval for these pumps?
Dry screw pumps are low maintenance. Routine tasks involve checking cooling water and gear oil (which is separate from the pumping chamber). They do not require the frequent fluid changes of oil-sealed pumps.
5. Is the pump suitable for pumping wet vapors?
Yes, the dry screw design can handle significant amounts of condensable vapors and even dust particles without seizing, unlike piston or vane pumps.
Ready to Upgrade Your Vacuum System?
Contact our experts for a custom solution tailored to your industry.
Additional information
| edited | by hyw |
|---|
Related products
-
Permanent Magnet Frequency Conversion Roots Vacuum Pumps
-
High-Efficiency Integrated Vacuum Unit For Semiconductor Industry
-
High‑Speed Industrial Roots Vacuum Pumps
-
High-performance Roots Pump Systems With Rotary Piston Pumps
-
Advanced Oil‑Free Duplex Steel and Pure Hastelloy Series Dry Screw Pumps
-
Industrial Rotary Piston Vacuum Pumps
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
English 
Bulgarian 
Russian 
Czech 
Bosnian 
Thai 
Arabic 
Chinese 
Swahili 
Amharic 
Japanese 
Korean 
Hungarian 
Spanish 
Azerbaijani 
Greek 
Vietnamese 
Danish 
Malay 
Hebrew 
Croatian 
Bengali 
Kyrgyz 
Italian 
Polish 
French 
Kazakh 
Portuguese