China supplier Small Portable Silent Litter Vibration Oil Free Air Compressor 0.85kw 35L Hb35 Cheap Price in China air compressor oil

Product Description

Product Description

1. The machine is light, easy to carry.
2. Without refueling in use process, low energy consumption, simple maintenance and low cost.
3. The machine little vibration, low noise
4. Compared with similar machines, the air charging time is faster and the work is reliable.
5. Suitable for food, medical treatment, woodworking decoration, scientific research institutions, and compressed gas as a power source in the field.

Product Parameters

Model HB12 HB30 HB35 HB50 HB70A HB90A HB120 HB200
Input power
0.68 0.75 0.85 1.5 1.36
Voltage (V/Hz) 220/50 220/50 220/50 220/50 220/50 220/50 220/50 220/50
Current (A) 2.8 3.0 3.8 6 6.8 9.0 13 20
Rotate speed (rpm/min) 1400 1400 1400 1400 1400 1400 1400 1400
Air Intake (L/min) 116 128 150 180 256 580 720 950
Exhaust pressure(Mpa) 0.8 0.8 0.8 0.8 0.7 0.7 0.7 0.7
Noise  (db(A)) 66 66 68 71 71 73 85 85
Volume (L) 12 30 35 50 70 90 160 200
Weight (KG) 18 23 26 39 43 69 105 150
Dimensions (CM) 53*23*55 54*30*56 64*32*61 70*30*65 70*35*70 100*35*70 120*41*75 150*45*85

Detailed Photos

Packaging & Shipping

Company Profile

Founded in 1997, our factory has become 1 of the most powerful air compressor equipment and engineering drilling equipment manufacturers in China, and is a member of the national compressor industry association, drilling machinery and pneumatic tools industry association, and a drafting unit of national standards. All the products have passed the quality system certification of ISO9001:2000 and national inspection-free products.

Its total registered capital of 245 million yuan, holding 10 subsidiaries, is a set of technology research and development, production and manufacturing, sales and service functions in 1 of the modern machinery and equipment manufacturing enterprises, the enterprise covers an area of 31000m2. The group has more than 1100 employees, including more than 100 middle and senior technical personnel. The group has established close cooperative relations with many domestic famous universities and other scientific research institutes, with strong product research and development capabilities.


Now as the main exporter of drilling rigs and air compressors equipment in China. It has exported to more 60 countries such as Southeast Asia, South America, Africa, Eastern Europe, Russia etc. Excellent quality and perfect service gain the consistent praise from customers. 


After Sales Service

1.Pre-sale service: 

Act as a good adviser and assistant of clients enable them to get  rich and generous returns on their investments . 

1.Select equipment model. 

2.Design and manufacture products  according to client’s special requirement 

3.Train technical personnel  for  clients . 

2.Services during the sale:

1.Pre-check and accept products ahead of delivery . 

2. Help clients to draft solving plans .

3.After-sale services:

 Provide considerate services to minimize clients’ worries.

1.Complete Aftersales service,professional engineers available to service machinery at home or oversea.   

2. 24 hours technical support by e-mail.

3. Call or Video service.


Q1: Are you factory or trade company?
A1: We are factory. And we have ourselves trading company.

Q2: Warranty terms of your machine?
A2: One year warranty for the machine and technical support according to your needs.

Q3: Will you provide some spare parts of the machines?
A3: Yes, of course.

Q4: What about the voltage of products??Can they be customized?
A4: Yes, of course. The voltage can be customized according to your equirement.

Q5: How long will you take to arrange production?
A5: 380V 50HZ we can delivery the goods within 7-15 days. Other electricity or other color we will delivery within 20-30 days.

Q6: Can you accept OEM orders?
A6: Yes, with professional design team, OEM orders are highly welcome.

Q7 Which trade term can you accept?
A7: Available trade terms: FOB, CIF, CFR, EXW, CPT, etc.

After-sales Service: 24 Hours Online Service
Warranty: 1 Year
Lubrication Style: Oil-free
Cooling System: Air Cooling
Structure Type: Open Type
Exhaust Pressure(MPa): 0.8

air compressor

What Are the Downsides of Using Oil-Free Air Compressors?

While oil-free air compressors offer numerous advantages, there are also some downsides to consider. Understanding these drawbacks is important when evaluating the suitability of oil-free compressors for specific applications. Here’s a detailed explanation of the downsides of using oil-free air compressors:

1. Higher Initial Cost:

Oil-free air compressors generally have a higher initial cost compared to oil-lubricated compressors. The design and technology used in oil-free compressors, such as specialized coatings, precision manufacturing, and advanced filtration systems, contribute to their higher price tag. This can be a significant factor for budget-conscious buyers or for applications where cost is a primary consideration. However, it’s important to weigh the initial cost against the long-term benefits and potential cost savings in terms of maintenance, energy efficiency, and reduced risk of oil contamination.

2. Reduced Durability:

Oil-free compressors may have slightly reduced durability compared to oil-lubricated compressors. The absence of oil for lubrication can result in increased wear on certain components, such as piston rings, valves, and bearings. However, modern advancements in materials and engineering have significantly improved the durability and lifespan of oil-free compressors. With proper maintenance and adherence to recommended operating conditions, oil-free compressors can still provide reliable performance over an extended period.

3. Higher Energy Consumption:

Oil-free air compressors typically have higher energy consumption compared to oil-lubricated compressors. The absence of oil for lubrication increases friction within the compressor, requiring more energy to overcome this resistance. However, advancements in compressor design, such as improved air ends, energy-efficient motors, and variable speed drives, have helped minimize this energy consumption gap. Additionally, the potential energy savings from eliminating the need for oil changes and reducing the risk of pressure drops due to oil contamination can offset the higher energy consumption over the compressor’s lifetime.

4. Limited Cooling Capacity:

Oil-free compressors may have limited cooling capacity compared to oil-lubricated compressors. Oil acts as a lubricant and coolant in oil-lubricated compressors, effectively dissipating heat generated during compression. In contrast, oil-free compressors rely on other cooling mechanisms, such as air or water cooling, which may have limitations in handling high heat loads. This can be a consideration for applications that require continuous or high-duty cycle operation in elevated ambient temperatures. Adequate cooling systems and proper monitoring of temperature limits are necessary to prevent overheating and ensure optimal performance of oil-free compressors.

5. Noisy Operation:

Oil-free air compressors are generally noisier compared to oil-lubricated compressors. The absence of lubricating oil can result in increased noise levels due to direct metal-to-metal contact between rotating and reciprocating parts. However, advancements in noise reduction technologies and sound insulation materials have helped mitigate this issue to some extent. Additionally, the noise level can vary between different models and brands of oil-free compressors, so it’s important to consider the specific noise requirements of the application and select a compressor that meets those criteria.

Despite these downsides, oil-free air compressors have become increasingly popular and widely used in various industries due to their advantages in providing clean, oil-free compressed air. It’s important to assess the specific requirements of the application, consider the trade-offs, and consult with compressed air experts to determine whether an oil-free compressor is the most suitable choice.

air compressor

Can Oil-Free Air Compressors Be Used in Cold Climates?

Yes, oil-free air compressors can be used in cold climates. Here’s a detailed explanation of the considerations and adaptations that may be necessary when using oil-free compressors in cold weather:

1. Cold-Start Capability:

Oil-free compressors should be designed and equipped with features that enable them to start and operate reliably in cold temperatures. This includes components such as low-temperature lubricants, preheating systems, and specialized insulation to prevent freezing or damage to critical parts.

2. Compressed Air Drying:

In cold climates, the moisture content in the compressed air can condense and freeze, leading to operational issues and potential damage to the compressed air system. It is crucial to incorporate proper compressed air drying equipment, such as refrigerated dryers or desiccant dryers, to remove moisture from the compressed air and prevent freezing within the system. This ensures the production of dry and reliable compressed air even in cold weather conditions.

3. Freeze Protection:

Special attention should be given to protecting the compressor and associated components from freezing. This may involve insulation, heat tracing, or the use of frost protection heaters in critical areas susceptible to freezing, such as air intakes, valves, filters, and condensate drains. Adequate insulation can help maintain optimal operating temperatures and prevent freezing-related issues.

4. Cold Weather Lubricants:

In extremely cold climates, it is essential to use specific lubricants that are designed to perform effectively at low temperatures. These lubricants should have low pour points and be capable of providing sufficient lubrication and protection to the compressor’s moving parts even in cold environments. Using the appropriate lubricants ensures reliable operation and prevents damage to the compressor during cold starts and operation.

5. Preventive Maintenance:

Regular preventive maintenance is crucial when using oil-free compressors in cold climates. It is essential to follow the manufacturer’s recommendations for maintenance tasks such as filter replacements, lubricant changes (if applicable), and inspection of critical components. Cold weather conditions can exacerbate wear and tear on equipment, so proper maintenance helps identify and address potential issues before they lead to operational problems.

6. Monitoring and Control:

Implementing advanced monitoring and control systems can provide real-time information about the compressor’s performance in cold climates. Monitoring parameters such as temperature, pressure, and system efficiency can help identify any deviations or potential issues caused by low temperatures. Additionally, control systems can optimize compressor operation and adjust parameters to ensure efficient performance in cold weather conditions.

It’s important to consult the manufacturer’s specifications and guidelines for the specific oil-free compressor model being used, as they may provide additional recommendations or requirements for operating the compressor in cold climates. Adhering to these guidelines and implementing appropriate adaptations will help ensure the reliable and efficient performance of oil-free air compressors in cold weather environments.

air compressor

What Is an Oil-Free Air Compressor?

An oil-free air compressor, also known as an oilless air compressor, is a type of air compressor that operates without the use of lubricating oil in the compression chamber. Unlike traditional air compressors that rely on oil for lubrication and sealing, oil-free compressors employ alternative methods to achieve compression and deliver clean, oil-free compressed air. Here’s a detailed explanation of how oil-free air compressors work and their key characteristics:

Working Principle:

Oil-free air compressors utilize various techniques to compress air without the need for oil. The most common methods include:

  • Dry Compression: In this method, the compression chamber doesn’t have any oil present. Special materials, coatings, and surface treatments are used to reduce friction and wear between the moving parts, allowing for efficient compression without oil lubrication.
  • Water or Air Cooling: Oil-free compressors often employ advanced cooling mechanisms, such as water or air cooling, to dissipate the heat generated during compression. This helps to maintain the operating temperature within acceptable limits and ensures the longevity of the compressor.
  • Piston Rings and Seals: Instead of relying on oil for lubrication and sealing, oil-free compressors use specialized piston rings, seals, or other forms of dry frictionless technology. These components provide the necessary sealing and reduce internal friction, allowing for efficient compression without the need for oil.

Characteristics of Oil-Free Air Compressors:

1. Clean and Oil-Free Air: The primary advantage of oil-free air compressors is that they deliver air that is free from oil contamination. This makes them suitable for applications where oil contamination can be detrimental, such as in the medical, pharmaceutical, food and beverage, electronics, and automotive industries.

2. Low Maintenance: Oil-free compressors typically require less maintenance compared to oil-lubricated compressors. Since there is no oil to change or monitor, maintenance tasks related to oil filtration, oil changes, and oil disposal are eliminated. This can result in cost savings and reduced downtime.

3. Compact and Lightweight: Oil-free compressors are often designed to be compact and lightweight, making them portable and easy to transport. This makes them suitable for applications where mobility is required, such as construction sites, workshops, and on-site maintenance tasks.

4. No Oil Contamination Risk: With oil-free compressors, there is no risk of oil contaminating the compressed air system. This eliminates the need for additional filtration or separation equipment to remove oil from the compressed air, simplifying the overall system design.

5. Lower Initial Cost: In general, oil-free compressors tend to have a lower initial cost compared to oil-lubricated compressors. This can be advantageous for applications with budget constraints or when the specific requirements of the application align with the capabilities of oil-free compressors.

It’s important to note that oil-free air compressors may have certain limitations compared to oil-lubricated compressors. They may have lower maximum operating pressures and higher operating temperatures. Additionally, the absence of oil lubrication may result in slightly reduced efficiency and increased wear on certain components over time.

By understanding the working principle and characteristics of oil-free air compressors, users can determine whether this type of compressor is suitable for their specific application and requirements.

China supplier Small Portable Silent Litter Vibration Oil Free Air Compressor 0.85kw 35L Hb35 Cheap Price in China   air compressor oilChina supplier Small Portable Silent Litter Vibration Oil Free Air Compressor 0.85kw 35L Hb35 Cheap Price in China   air compressor oil
editor by CX 2023-10-18

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