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XW Mech PTO Air Compressor VS. Gardner Denver TR20 Oil-Free Compressor

PTO truck mounted air compressors and blowers play an important role in the heavy-duty applacations of semi trucks and trailers.…

January 22, 2026

Zac | Founder of XWMECH

Hi, I’m Zac, here to share my expertise in oil-free screw air compressors and blowers with you.

PTO truck mounted air compressors and blowers play an important role in the heavy-duty applacations of semi trucks and trailers. They are one of the key action power device for the dry bulk and construction industry because of their affection on the working efficiency and operation cost. But how to choose the best suitable PTO truck mounted air compressors and blowers to upgrade your truck business and efficiency? Today, I will introduce you two popular PTO truck mounted air compressors in the international market——WYC-37-P PTO Air Compressor & TR20 Oil-Free Compressor. Keep reading and you will be easy to make professional selection decisions based on the next six key dimensions: design philosophy, core performance, technical specifications, application scenarios, price, and maintenance. Let’s see together.

1. Design Philosophy

WYC-37-P PTO Air Compressor

XW Mech is an innovative Chinese truck mounted air compressor manufacturer. Its WYC-37-P PTO driven air compressor focus on truck lightweighting and development of upgraded air supply systems. It is suitable for powder transportation, dry bulk unloading, and high-frequency air source requirements with low to medium loads.

Key design objectives include:

  • Oil-free screw structure, ensuring 100% clean air delivery
  • Direct PTO drive, eliminating the need for separate power units
  • Structural and material optimization, achieving overall weight reduction
  • Compact size, reducing installation area and saving more working space

TR20 Oil-Free Compressor

The Gardner Denver TR20 oil-free compressor is well-known and represents a more industrial-grade approach to truck mounted screw compressors. TR20 oil-free compressor is engineered to deliver high airflow, stable pressure, and long-term durability, even in demanding conditions.

Key design objectives include:

  • Drive shaft, providing maximum flexibility for direct PTO propshaft positioning when on restricted chassis installations
  • Coated steel screw rotors, allowing for maximum strength and corrosion resistance
  • Torque limiting coupling, protecting the gearbox PTO from overloading and any potential damage
  • Low profile inlet flange, reducing the installation envelope
  • Outlet flanges positioned on both sides, providing increased mounting flexibility

2. Features & Performance

Although the WYC-37-P screw compressor and TR20 oil-free air compressor both adopt oil-free technology and power take off (PTO) driven method, their performance and characteristics reflect different operational priorities.

WYC-37-P PTO Air Compressor

The XW Mech WYC-37-P PTO-driven air compressor is usually chosen by customers who run low to medium-intensity unloading operations. The WYC-37-P provides ample airflow and pressure for most powdered material conveying applications, such as cement, fly ash, lime, and similar dry bulk materials. Its performance is carefully balanced to meet efficient unloading needs while minimizing energy loss, mechanical stress, and fuel consumption. So it is particularly suitable for fleets requiring frequent but relatively short unloading cycles. Furthermore, its weight of only 130kg, which is ligher than the traditional air compressor and helps improve payload capacity and overall vehicle efficiency.

TR20 Oil-Free Compressor

In contrast, the Gardner Denver TR20 oil-free compressor is more popular among those who requiring higher airflow and more demanding duty cycles. The TR20 oil-free compressor offers higher airflow and a wider operating range, making it suitable for denser materials or longer conveying distances. Even during prolonged unloading operations, the TR20 oil-free compressor maintains stable pressure output and performs well reducing the risk of performance degradation.

3. Technical Specifications

WYC-37-P PTO Air Compressor

WYC-37-P PTO Air Compressor
Speed 950rpm 1200rpm 1500rpm 1800rpm
Pressure 2.0 bar
Discharge Temperature 170℃ 172℃ 173℃ 182℃
Flow m³/hr 660 854 1060 1265
Power kW 38.7 47.3 58.3 69.9
Max Inhalation Temperature 50℃ 50℃ 50℃ 50℃
Pressure 2.5 bar
Discharge Temperature 200℃ 201℃ 207℃ 222℃
Flow m³/hr 609 804 1029 1220
Power kW 44.7 54.5 66.8 79.8
Max Inhalation Temperature 42℃ 45℃ 47℃ 47℃

TR20 Oil-Free Compressor

TR20 oil-free compressor is an ideal for installation on a variety of 6×2 and 6×4 chassis trucks. The TR20 oil-free compressor generates high airflow at pressures up to 2.2 bar, with a maximum airflow of 1,060 cubic meters per hour. So TR20 oil-free compressor provides a versatile performance range suitable for a wide range of dry bulk applications.

Comparison

Parameter XW Mech WYC-37-P Gardner Denver TR20
Compressor type Oil-free screw Oil-free screw
Drive method PTO-driven PTO-driven
Airflow output Medium to high High
Pressure range Optimized for standard unloading Wider operating range
Air quality Oil-free Oil-free
Weight Light Heavier
Continuous operation Suitable for standard duty cycles Excellent for long, continuous cycles
Cooling system Integrated, vehicle-oriented Industrial-grade cooling

4. Applications

WYC-37-P PTO Air Compressor

The WYC-37-P PTO screw truck mounted air compressor is best suited for powder tanker fleets that prioritize lightweight construction, cost efficiency, and straightforward maintenance. This oil free screw compressor is suited to the following oil-free applications:

  • Dry bulk: discharging your bulk materials at optimum rates
  • Animal feed: discharging your animal feed in the safetest way
  • Chemical bulk: tailoring for the challenges of the chemical transportation
  • Construction bulk: providing solutions for construction materials from powers to large aggregates

TR20 Oil-Free Compressor

The TR20 oil-free compressor is more suitable for operations that demand high unloading capacity, longer continuous operation, or maximum system robustness. It can be installed inside the chassis of the latest generation of Euro 6 Tractor Units. With a displacement rate of up to 1,060 m³/hr, the TR20 is sized to discharge all products from cement to plastic pellets. Its typical applications include cement, bulk food powders, animal feed, mineral powders, chemical powders, and other dry bulk materials where oil-free air is required but extreme airflow is not necessary.

5. Cost & Price

From a cost perspective, the TR20 oil-free compressor and WYC-37-P PTO compressor are positioned differently in the market. Their price ranges reflect their respective target markets and value propositions. Users can make the appropriate choice based on their financial budget, usage intensity, and long-term operational strategy.

WYC-37-P PTO Air Compressor

The XW Mech WYC-37-P PTO driven air compressor is more competitively priced, typically ranging from $4,500 to $7,000. It is not only more affordable in terms of initial purchase cost, but its simple and efficient design, relatively lightweight construction, and lower spare parts and daily maintenance costs also keep ongoing operating costs low. This cost-effectiveness helps users recoup their investment faster and is undoubtedly more attractive to budget-conscious projects, those requiring flexible deployment, or operators expanding their fleet and focusing on cost control.

TR20 Oil-Free Compressor

The TR20 oil-free compressor pricetypically starts at $7,000 for the basic model. With higher-end configurations, the TR20 oil-free compressor price will be significantly higher. But the higher investment means you will gain robust industrial-grade construction, long maintenance intervals, high reliability, and strong global brand service and support network. In conclusion, the TR20 oil-free compressor is an ideal solution for users with high usage intensity, demanding operating conditions, or those highly sensitive to operational continuity.

6. Maintenance

WYC-37-P PTO Air Compressor and TR20 Oil-Free Compressor both adopt advanced oil-free screw technology, significantly reducing the risk of lubricating oil contamination and eliminating the daily maintenance costs. However, their specific maintenance strategies differ significantly to meet varying user preferences and needs.

WYC-37-P PTO Air Compressor

The WYC-37-P PTO oil-free compressor is ideal for users who prioritize ease of maintenance. Its clear structural layout and easily accessible key components make installation and removal straightforward. This makes routine inspections, cleaning, and part replacement more convenient for users. It is particularly suitable for users with in-house maintenance teams who value flexible maintenance options.

TR20 Oil-Free Compressor

Maintenance of the TR20 oil-free compressor is more specialized and requires meticulous planning. The TR20 oil-free compressor typically requires maintenance by trained technicians following standardized procedures. Furthermore, it is best to use original manufacturer-certified parts when replacing wear parts. Although maintaining the TR20 oil-free compressor requires more resources, it has a longer maintenance cycle and demonstrates exceptional durability and stability under continuous high-load operation. Therefore, the TR20 oil-free compressor is more suitable for professional industrial environments that require long-term reliable operation.

Conclusion

In summary, the XW Mech WYC-37-P oil-free compressor and the Gardner Denver TR20 oil-free compressor represent two different yet equally efficient PTO-driven compressor solutions. The main difference between them is not which compressor performs better, but rather in which applications each can achieve maximum efficiency and lowest operating costs.

The XW Mech WYC-37-P PTO air compressor focuses on lightweight design, high integration, and cost-effectiveness. So it is an ideal choice for modern powder tanker fleets seeking practical performance and a quick return on investment. On the other hand, the Gardner Denver TR20 oil-free compressor emphasizes industrial-grade reliability, high airflow, and long-term operational stability. It is more suitable for users with higher performance requirements.

The final choice depends on your vehicle design strategy, unloading intensity, budget, and long-term operational goals. If you are unsure which option is best, please leave us a message. XW Mech will provide a personalized professional air compressor solution based on your specific needs.

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