|Payment Terms:||L/C,T/T,Western Union,MoneyGram|
|Supply Ability:||4000 Set/Sets per Month|
|Applicable Industries:||Hotels,Garment Shops,Building Material Shops,Manufacturing Plant,Machinery Repair Shops,Food & Beverage Factory,Farms,Restaurant,Home Use,Retail,Food Shop,Printing Shops,Construction works ,Energy & Mining,Food & Beverage Shops,Advertising Company|
|Power Source:||AC POWER|
|Place of Origin:||Jiangxi China|
|After-sales Service Provided:||Video technical support|
|Product name:||High Quality 7.5kw Water Lubrication 100% Oil Free Air Compressor|
|Motor power:||7.5Kw (10Hp)|
|Cooling method:||Air Cooling|
|Keywords:||oil free Screw Air Compressor|
|Packaging Detail:||Standard export wooden box packing suitable for long time truck loading and ocean shipping.|
|Product Name: High Quality 7.5kw Water Lubrication 100% Oil Free Air Compressor|
|Model number: ZW-7.5|
|Working Pressure: 7 - 10bar (100 - 145psi)|
|Air Delivery/capacity: 1 - 1.2m3/min|
|Motor Power: 7.5kw/10hp|
|Lubricating Water Amount: 20 L|
|Rotation Rate : 2940 rpm|
|Noise Level: 61 dBA|
|Type of Driving: Directly Driven|
|Type of Cooling: Air Cooling/Water Cooling|
|Dimension: 1135x800x1000 mm|
|Air Outlet Discharge Size: G1"|
|MODEL||MAXIMUM WORKING PRESSURE||FREE AIR DELIVERY* OF UNIT AT WORKING PRESSURE||MOTOR||NOISE LEVEL||Lubricating Water|
|Rotation Rate||AIR OUTLET DISCHARGE SIZE||WEIGHT||DIMENSIONS|
|One screw rotor and two gate rotors which are positioned at right angle to the axis constitute two compressing rooms. Therefore, the screw rotor with six grooves compresses as many as 12 times per rotation.|
|Without applying thrust load to the axis direction of the rotor, the force in the circumference direction rotates quietly with good balance. As a result, the load to the bearing is lightened, minimizing the generation of noise or vibration.|
|The gate rotors are rotated following the rotation of the screw rotor along its gear. The water film formed on the screw rotor’s gear and the free floating mechanism maintains the high efficiency for a long time (in case of water lubrication).|
|√ High Efficiency|
|Since the lubrication water is jetted in the compressing process, the compression is done smoothly under almost even temperature, realizing ideal, safe and highly efficient compression with slow rotation (in case of water lubrication).|
|Comparison||Water Lubricated oil-free single screw air compressor||Dry oil-free double screw air compressor|
|Air Discharge Temp||About 50℃||About 180-200℃|
Rotor has been used twice through one circulation,No clearance volume left
|Rotor has been used once through one circulation,Existing clearance volume|
|Air Delivery||Ideal isothemal compression,air delivery volume 5%-12% more||Energy lost due to hot air discharge|
|Effiency||Normally:5.9-6.4 m3/min||Normally:6.0-6.6 m3/min|
|Air Quality||100% oil-free||Oil in the gear,high risk of air quality|
|Air Purity||Purified by water,clean air after separation||Directly compressed then discharge,containing dust and oil stain|
|Structure Balance||Radial and axial loads cancel each other||Radial load is not been balanced|
|Noise and Vibration||Simple structure,Low vibration and less noise,Normally:60-65dB(A)||High frequency noise due to screw grinding,Normally:64-78 dB(A)|
|Durability||Rotation speed 3000r/min,theoretically zeao load,long lifetime of screw (30000h),star wheel (50000h)||Rotation speed 18000r/min,high loads on crews,short lifetime of screw(8000-18000h)|
|Installation||Only a few spare parts,canbe installed and adjusted separately||Complex con struction,needs special technical support for installation|
|Maintenance||Only replaced air filter and water filter,easy maintenance and low cost||Many spare parts and less maintenance cycle,high cost|
|Does the water corrode the air compressor system?|
|Water lubricated compressor is desirable to use pure drinking water standards parts and materials is conform to the international standard grades of 304 and 316 stainless steel, will never rust|
|Does the water affect the service life of bearings?|
|Uses high-tech nanotechnology, customized silicon carbide bearing and ceramic bearing, lubrication with water directly won't any problems|
|Will the efficiency of water lubrication oil-free compressor go down?|
Technology is the only the essence of a single screw manufacturing company in the world inherited the Germany hundred processes and technologies, so their end warranty for two years, the service life of up to ten years or more, a single screw air end efficiency does not decrease more than 5% after 6 years.
|Does the water generate scale?|
The system uses pure water which is accord with drinking water standards, water has been circulating in the system and every 200hours total, the system will automatically change the water make sure the water does not increase the calcium content and actively running a temperature not higher than 50C there is no risk of fouling.
|Is the moisture content percentage high in the compressed air system?|
|After air compression, the water content has reached saturation the water content of the compressed air only related to the temperature,there is no relationship with other the temperature of the compressed air generated by water lubrication unit is not higher than 50C, so the water-lubricated compressed air moisture than other types of compressors units.|
√ Professional online consultant to solve your question about compressor system.
√ Free site design consultant, and energy saving solution to help you save operation cost.
√ Negotiable technician available to service machinery overseas.
√ Online professional after-service until solve the problem.
√ 1 year warranty after commissioning or 16 months against shipping date, it depends on which one come firstly for the whole machine(except maintenance consumable).
√ A sufficient number of spare parts are available, make sure the good after service.