DRESSER ROOTS 6511002L Urai Rotary Lobe Blower 47

( Brand: Dresser Roots ), ( Manufacturer Part Number: 6511002L ), ( Model: 47-URAI ), ( Part Type: Blower ), ( Country Of Manufacture: Usa )

Review DRESSER ROOTS 47 Urai Universal Rotary Lobe Blower

The **Dresser-Rand Roots 6511002L 47 URAI Rotary Lobe Blower** is a robust, high-performance industrial air mover designed to deliver reliable, efficient, and consistent volumetric flow for a wide range of applications, from general ventilation and dust collection to specialized processes in manufacturing, mining, and material handling. Engineered with precision and built to endure the demands of continuous operation, this blower features a **47-inch (1.2-meter) lobe diameter**, providing an impressive displacement capacity that ensures optimal air movement even in high-volume or high-pressure scenarios. The **URAI (Ultra-Reliable Air Interface)** design enhances sealing performance and reduces wear, extending the blower s operational lifespan while minimizing maintenance requirements. Constructed with high-grade materials, including durable cast iron housings and precision-machined lobes, this blower is engineered to withstand harsh environments, including exposure to dust, moisture, and temperature fluctuations, making it ideal for both indoor and outdoor installations. The **rotary lobe design** ensures smooth, pulsation-free airflow, which is critical for applications requiring consistent pressure and volume, such as pneumatic conveying systems, baghouse filtration, or exhaust ventilation in foundries and metalworking facilities. With its **direct-drive or belt-driven configuration options**, the Roots 6511002L 47 URAI offers flexibility in integration with various power sources, including electric motors, diesel engines, or gas turbines, allowing for tailored solutions to meet specific energy efficiency and operational needs. Additionally, the blower s **modular design** facilitates easy access for maintenance, with components like the lobes, seals, and bearings designed for quick replacement, reducing downtime and operational costs. Whether deployed in a large-scale industrial facility or a specialized processing plant, this blower exemplifies Dresser-Rand s commitment to performance, durability, and engineering excellence, delivering a dependable solution for demanding air movement applications.

The Dresser Roots 6511002L 47 URai Rotary Lobe Blower is a high-performance industrial blower designed for applications requiring positive displacement airflow. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros of the Dresser Roots 6511002L 47 URai Rotary Lobe Blower**

1. **High Efficiency and Performance**

The URai series is engineered for superior efficiency, delivering consistent airflow and pressure even under varying load conditions. The rotary lobe design ensures smooth operation with minimal pulsation, making it ideal for applications requiring stable airflow, such as dust collection, material handling, or ventilation systems.

2. **Durability and Reliability**

Dresser-Roots is a well-established brand known for robust industrial equipment. This blower is built with high-quality materials, including hardened lobes and precision-machined components, which extend its operational lifespan. The URai series incorporates advanced sealing and lubrication systems to reduce wear and tear, lowering maintenance frequency.

3. **Versatility in Applications**

- **Agriculture** (grain drying, aeration)

- **Mining** (ventilation, dust extraction)

- **Construction** (concrete mixing, material conveyance)

- **Manufacturing** (process ventilation, exhaust systems)

- **HVAC and Air Handling** (large-scale air movement)

The blower s adjustable speed capabilities (via variable frequency drives) allow it to adapt to different system requirements.

4. **Energy Savings**

The URai series is designed with energy-efficient features, such as optimized lobe profiles and reduced friction losses. When paired with a variable frequency drive (VFD), it can significantly reduce energy consumption by matching airflow to demand, leading to cost savings over time.

5. **Low Maintenance Requirements**

The blower s sealed design minimizes contamination, and its lubrication system is designed to reduce the frequency of oil changes. The use of high-quality bearings and seals further reduces the risk of breakdowns, making it a low-maintenance option for heavy-duty applications.

6. **Quiet Operation**

Compared to other positive displacement blowers, the URai series operates with reduced noise levels due to its smooth lobe design and vibration-dampening features. This is particularly advantageous in applications where noise reduction is critical, such as in residential or mixed-use buildings.

7. **Scalability and Customization**

Dresser-Roots offers options for customization, including different motor sizes, inlet/outlet configurations, and mounting styles. This flexibility allows users to tailor the blower to specific spatial or performance requirements.

8. **Proven Track Record**

Dresser-Roots has a long history of manufacturing reliable industrial equipment. The 6511002L model benefits from decades of engineering experience, with a proven track record in demanding environments.

---

### **Cons of the Dresser Roots 6511002L 47 URai Rotary Lobe Blower**

1. **High Initial Cost**

As a premium industrial blower, the upfront purchase price is significantly higher than that of smaller or less sophisticated models. This can be a barrier for small businesses or startups with limited capital.

2. **Complex Installation and Setup**

The blower requires professional installation, including proper alignment, electrical connections, and integration with the existing system. Improper setup can lead to inefficiencies, increased wear, or even damage. This may incur additional labor costs.

3. **Dependence on Proper Lubrication**

While the URai series is designed for low-maintenance lubrication, it still requires regular oil changes and monitoring. Failure to maintain the lubrication system can result in premature wear, lobe damage, or complete failure. This adds to the operational overhead.

4. **Sensitivity to Contaminants**

Although the blower is robust, it is not entirely immune to dust, debris, or moisture. In highly contaminated environments (e.g., certain mining or agricultural settings), additional filtration or protective measures may be necessary to prevent clogging or damage to the lobes and bearings.

5. **Noise in Some Applications**

While the URai series is quieter than many blowers, it may still produce noticeable noise levels in certain configurations or when operating at high capacities. This could require additional soundproofing measures in noise-sensitive areas.

6. **Limited Availability of Parts and Service**

Depending on the region, finding authorized service providers or replacement parts for Dresser-Roots equipment may be challenging. This could lead to longer downtimes if maintenance or repairs are required.

7. **Space Requirements**

The blower is a large, heavy-duty unit that requires adequate space for installation. In facilities with limited floor or ceiling clearance, installation may be difficult or require structural modifications.

8. **Potential for Higher Operating Costs Without VFD**

Without a variable frequency drive (VFD), the blower operates at a fixed speed, which may result in energy inefficiencies if the system does not require constant maximum airflow. While the URai series is energy-efficient, adding a VFD can increase the total cost of ownership.

---

### **Conclusion**

The Dresser Roots 6511002L 47 URai Rotary Lobe Blower is a high-performance, durable, and energy-efficient solution for demanding industrial applications. Its advanced design, low maintenance requirements, and versatility make it an excellent choice for businesses requiring reliable airflow solutions. However, its high initial cost, complex installation, and sensitivity to maintenance and environmental factors must be carefully considered.

For users with the budget and infrastructure to support a premium blower, the URai series offers long-term reliability and operational savings. Conversely, smaller operations or those with limited technical resources may find the upfront investment and maintenance demands prohibitive.

---

### **Recommendation**

- You require a **highly efficient, low-maintenance, and durable** blower for **large-scale or critical applications** (e.g., industrial ventilation, material handling, or agricultural processing).

- Your budget can accommodate the **higher initial cost**, and you have access to **professional installation and maintenance services**.

- Energy savings and **long-term operational reliability** are priorities, and you plan to integrate it with a **variable frequency drive (VFD)** for optimal performance.

- The application demands **consistent airflow with minimal pulsation**, such as in dust collection or pneumatic conveying systems.

- Your budget is constrained, and you can opt for a **lower-cost blower** (e.g., a centrifugal or axial fan) that meets your basic airflow requirements.

- The application is **small-scale or intermittent**, and a less robust blower would suffice.

- You lack the **technical expertise or infrastructure** to properly install, maintain, or troubleshoot the blower.

- The environment is **extremely contaminated**, and additional filtration or protective measures would be required, increasing complexity and cost.

For most **large industrial, agricultural, or mining operations** where reliability and efficiency are paramount, the Dresser Roots 6511002L 47 URai is a **strong recommendation**. However, a thorough cost-benefit analysis including installation, maintenance, and energy costs should be conducted to ensure it aligns with your specific needs.

Details:

Model 47 URAI. Your phone number and business name. height : 12 in. Next Day Second Air Services are available.

Will there be a dock or forklift. width : 14 in. Expedited shipping is also available. LOCAL PICK-UP, Prefer to pick it up yourself.

P/N: 6511002L. We choose the carrier. Need it urgently. Quick Links Contact.

After the return period has ended, you can no longer product. Tested and works as it should.

part #: 6511002l prices

• $299.95-$1899.99

specifications fablowehva:

• brand: Dresser Roots
• mpn: 6511002l
• model: 47-urai
• part type: Blower
• country of manufacture: Usa

seller fablowehva:

• city: Middlebury, Indiana
• rating: 99.8%
• # reviews: 65062

shipping fablowehva:

• class: Standard, Expedited, One-day
• carrier: UPS
• cost: $418.74
• type: Calculated
• transit: 2-4 Days
• service: UPS Ground, UPS 2nd Day Air, UPS Next Day Air

returns fablowehva:

• policy: Returns Accepted
• method: Money back
• time: 30 Days
• paid by: Buyer

offer fablowehva:

• options: Ship-to-home
• quantity: 1
• availability: In Stock
• sold: 0
• started: May 5, 2026
• best offers: True

payments fablowehva:

• credit card: Visa
• other
• wallet: Apple-pay

general fablowehva:

• HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Refrigeration: Fans Blowers
• condition: Used

Dresser Roots 6511002L Is Similar To:

• 403-ram 0902984380 Ser Lobe Roots Dresser Mod Rotary Blower (38.7% similar) Thanks from co reuse...(July 10th, 2015)
• 360ib Roots Cb-246 Dresser Centrifugal (24.7% similar) 2 Pisa discharge pressure, 7309 rpm speed gear reducer: a cfm . Roots Dresser 360IB centrifugal compressor w hp motor. 82 Pisa inlet pressure, 217 degree f temp. 622 specific gravity, 20...(January 4th, 2018)
• 42u-rai 6510802l Dresser New Roots (28% similar) For cancelled orders, a 35 service fee will apply. Our daily shipping cut-off is 3:00PM eastern time...(June 16th, 2017)
• 56-u-rai Used Smoot Blower Package W Roots Dresser Sound Proofing Enclosure (23.9% similar) Do not forget about any other charges which are charged by the carrier. For thousands of other industrial items. Used smooth blower package w Roots Dresser 56 u rai sound proofing enclosure used heater...(August 8th, 2016)
• Blower Left Roots Tuthill Vacuum Dresser 6008-21l2 Competitor Shaft Urai (29% similar) Items may be previewed m f from 10 5 pm MST by appointment only. If the does not say new then you are to assume it is a preowned item. This is a replacement for a Roots Dresser urai. Tut hill 6008 21L2 competitor blower left shaft special. Most of the items sold on this page are surplus items from ...(June 9th, 2015)
• 6510902l 45-u-rai Roots Dresser Fr (19.4% similar) ...(September 20th, 2017)
• 862-626-220 Dresser Roots Rotary Lobe Blower 624 Rcs-h (56.6% similar) Please at for approval. Item shipping weight 780 lbs. So please asap. We estimate shipping costs in order to keep shipping cost as minimal as possible. If needing special shipping services please prior to purchasing buying on the item. The photos that are provided are of the actual item...(December 28th, 2015)
• 866-689-220 Dresser Roots Rotary Lobe Blower 616 Rcs-v (56.6% similar) Item shipping weight 680 lbs. Please at for approval. The photos that are provided are of the actual item. We estimate shipping costs in order to keep shipping cost as minimal as possible. If needing special shipping services please prior to purchasing buying on the item...(December 27th, 2015)
• M7047t-i Baldor Roots Dresser Universal Blower 45 Urai W Motor Cat (41.6% similar) ...(October 5th, 2015)
• 1024jv 1024 Roots Dresser Used Rotary Lobe Blower Model (50.9% similar) The item may have flaws and or defects because this is a used item. This offer is for the blower. Buyer pays all return shipping costs. Offer most be paid for within 48 hours. Please continue reading the rest of the conditions below all the way to the end before buying. This offer is for 1 used ...(July 15th, 2016)
• D516069 Ram-j Dresser 406 Roots 601cfm 18psi Rotary Lobe Blower (60.7% similar) Dresser 406 ram j Roots 601 cfm 18PSI rotary lobe blower D516069 product specifications brand Dresser condition used model 406 ram j model line Roots suction size 4 in discharge size 4 in flow rate 601 cfm pressure 18 psi other not shipping weight 262 lbs shipping dimensions 23 x 15 x 15. Our ...(November 13th, 2015)