1. Valves And Flow Controls Industrial Automation Control For Sale
  2. sku: 12058236952609604
  3. BLOWER RB70DLP

BLOWER ENGINEERING RB70DLP Lobe Displacement Rotary Shaft

Rb70dlp Blower Engineering Tri-lobe Positive Displacement Rotary 2 Inch Shaft

( Brand: Blower Engineering ), ( Manufacturer Part Number: RB70DLP ), ( Part Type: Shaft ), ( Inlet Diameter: 5 In )

Review BLOWER ENGINEERING Tri lobe Positive Displacement Rotary Inch Shaft

The **Blower Engineering RB70DLP Tri-Lobe Displacement Rotary Shaft** is a high-performance, precision-engineered component designed for demanding applications in industrial gas compression, vacuum systems, and specialized fluid handling. This robust shaft is a critical element of Blower Engineering s RB70 series of tri-lobe rotary screw compressors and vacuum pumps, where reliability, efficiency, and durability are paramount. Crafted from premium-grade materials, the shaft is machined to exacting tolerances to ensure seamless integration with the compressor s internal lobes, minimizing friction and maximizing operational longevity. Its tri-lobe design featuring three evenly spaced lobes optimizes gas displacement, reducing pulsation and improving volumetric efficiency, which is essential for maintaining consistent flow rates in both positive displacement and vacuum applications. The shaft s robust construction, often featuring hardened and ground surfaces, resists wear from abrasive gases or contaminants, making it ideal for industries such as chemical processing, pharmaceutical manufacturing, and semiconductor fabrication, where cleanliness and precision are non-negotiable. Additionally, the RB70DLP shaft is engineered to accommodate high-speed operation, ensuring smooth performance even under heavy loads, while its balanced design minimizes vibration, reducing wear on bearings and seals. Whether used in oil-free or lubricated systems, this shaft delivers exceptional performance, contributing to the overall efficiency and reliability of the compressor or vacuum pump it powers. For applications requiring superior gas handling and extended service life, the RB70DLP tri-lobe rotary shaft stands as a testament to Blower Engineering s commitment to innovation and engineering excellence.

### **Pros and Cons of buying a Blower Engineering RB70DLP Tri-Lobe Displacement Rotary Shaft**

#### **Pros:**

1. **High Efficiency and Flow Rate** The RB70DLP is designed for high-volume air movement, making it ideal for applications requiring strong suction or positive pressure, such as vacuum systems, dust collection, or HVAC blowers. Its tri-lobe rotor design ensures smooth operation and minimal pulsation, improving overall performance.

2. **Durable Construction** Built with precision-engineered components, this rotary shaft blower is designed for long-term reliability. The use of high-quality materials and tight tolerances reduces wear and extends the lifespan of the unit, especially in industrial or commercial settings.

3. **Low Noise Operation** Compared to positive displacement blowers with more aggressive designs, the tri-lobe rotor minimizes noise generation, making it suitable for environments where quiet operation is preferred.

4. **Versatile Applications** The RB70DLP can be used in a variety of industries, including:

- **Vacuum systems** (e.g., material handling, packaging)

- **HVAC and air circulation** (e.g., ventilation, exhaust systems)

- **Industrial processes** (e.g., dust extraction, pneumatic conveying)

- **Automotive and aerospace testing** (e.g., wind tunnels, pressure testing)

5. **Compact and Space-Efficient Design** Unlike reciprocating or centrifugal blowers, rotary lobe blowers are generally more compact, allowing for easier installation in tight spaces.

6. **Self-Lubricating Capability** Many models in this class are designed to operate with minimal external lubrication, reducing maintenance requirements and the risk of contamination in clean environments.

7. **Backward Unloading (Optional)** Some configurations allow for backward unloading, which can help prevent damage from reverse flow and improve safety in certain applications.

8. **Energy Efficiency Compared to Alternatives** While not as efficient as centrifugal blowers for high-pressure applications, it offers better efficiency than traditional positive displacement blowers (like Roots blowers) in medium-pressure, high-flow scenarios.

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#### **Cons:**

1. **Higher Initial Cost** Rotary lobe blowers, especially high-quality models like the RB70DLP, tend to be more expensive upfront compared to simpler centrifugal or diaphragm blowers. The precision engineering and materials contribute to this cost.

2. **Maintenance Requirements** While designed for durability, rotary lobe blowers still require periodic maintenance, including:

- **Lubrication checks** (if applicable)

- **Seal inspections** (to prevent air leakage)

- **Rotor alignment checks** (to maintain efficiency)

- **Filter replacements** (to prevent debris buildup)

Neglecting maintenance can lead to reduced performance or premature failure.

3. **Limited Pressure Capability** The RB70DLP is optimized for medium-pressure applications (typically up to 15 psi or 1 bar). For high-pressure needs (e.g., above 20 psi), other blower types (such as screw compressors or positive displacement blowers with different rotor designs) may be more suitable.

4. **Sensitivity to Contaminants** While robust, the blower is not immune to damage from abrasive particles or moisture. Proper filtration and environmental controls are necessary to prevent wear on the rotors and seals.

5. **Noise at High Speeds** While generally quieter than some alternatives, the RB70DLP may produce noticeable noise at high rotational speeds, which could be a concern in noise-sensitive applications without proper sound dampening.

6. **Limited Availability of Spare Parts** Depending on the manufacturer, finding replacement parts (e.g., seals, bearings, or rotors) may be challenging, especially for older models. Ensuring compatibility with the supplier is crucial.

7. **Not Ideal for Ultra-High Flow Rates** While capable of high flow, it may not match the extreme flow rates achievable by larger centrifugal or axial blowers in some applications.

8. **Potential for Leakage** Poorly maintained seals or misalignment can lead to air leakage, reducing efficiency and increasing operating costs.

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### **Conclusion:**

The **Blower Engineering RB70DLP Tri-Lobe Displacement Rotary Shaft** is a **high-performance, durable, and efficient** choice for applications requiring **medium-pressure, high-flow air movement** with **low noise and smooth operation**. Its **precision engineering** and **versatility** make it suitable for industrial, commercial, and specialized uses where reliability and longevity are critical.

However, its **higher cost, maintenance needs, and limitations in extreme pressure or flow scenarios** mean it may not be the best fit for **budget-conscious projects, ultra-high-pressure applications, or environments with severe contamination risks**. If your application demands **high efficiency, quiet operation, and long-term reliability** within its specified parameters, this blower is an excellent investment. For **low-cost, high-flow, or high-pressure needs**, alternative blower types (e.g., centrifugal, screw, or diaphragm blowers) may be more appropriate.

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### **Recommendation:** **Buy the RB70DLP if:**

- You need a **reliable, low-noise, medium-pressure blower** for **vacuum systems, HVAC, or industrial air circulation**.

- Your application requires **smooth, pulsation-free airflow** without excessive maintenance hassles.

- You are willing to **invest in a high-quality, long-lasting unit** that will perform consistently over many years.

- Your environment is **moderately clean**, with **minimal abrasive particles or moisture**.

**Avoid or Consider Alternatives if:**

- You require **ultra-high flow rates** (consider a larger centrifugal blower).

- Your budget is **strictly limited** (explore simpler or used blowers).

- Your application demands **extremely high pressure** (evaluate screw compressors or positive displacement blowers).

- Your workspace has **severe contamination risks** (ensure proper filtration or choose a more robust model).

- You need **immediate, low-cost availability** (check for alternative suppliers or used units).

**Final Verdict:**

For **medium-pressure, high-flow applications** where **efficiency, durability, and quiet operation** are priorities, the **RB70DLP is a strong recommendation**. However, conduct a **detailed cost-benefit analysis** and **consult with a blower specialist** to ensure it aligns perfectly with your specific requirements.

Details:

Blower, For sale is a Blower Engineering Tri-Lobe RB70DLP Positive Displacement Rotary 2 Shaft Dia. Etch Surplus Rochester, NY, Shipping: Shipping costs will depend on location. Will come as shown and with what is pictured. May show minor imperfections but nothing that will impact performance.

Item appears used and in good condition.

part #: rb70dlp price

  • $2499.99

specifications valvplu:

  • brand: Blower Engineering
  • mpn: Rb70dlp
  • part type: Shaft
  • inlet diameter: 5 In

seller valvplu:

  • rating: 100.0%
  • city: Rochester, New York
  • # reviews: 14423

offer valvplu:

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

general valvplu:

  • Pumps Pump Accessories > Vacuum Pumps > Regenerative Blowers
  • condition: Used

payments valvplu:

  • other
  • wallet: Apple-pay
  • credit card: Diners-club

returns valvplu:

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

shipping valvplu:

part type: shaft, inlet diameter: 5 in,
category: business & industrial > pumps pump accessories > vacuum pumps > regenerative blowers, sku: 12058236952609604,
Blower Engineering RB70DLP Is Similar To:
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1 offer $2499.99 USD
  • Used. Offer #1 priced at $2499.99 + $Calculated shipping estimate = $2499.99* total. May show minor imperfections but nothing that will impact performance.+$Calculated shipping

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