BOSTON GEAR F718-20-B5-G Worm Reducer T267747

( Brand: Boston Gear ), ( Manufacturer Part Number: F718-20-B5-G ), ( Part Type: Reducer )

Review BOSTON GEAR Worm Speed Reducer

The **Boston Gear F718-20-B5-G Worm Reducer (Part #T267747)** is a robust and precision-engineered power transmission component designed to deliver reliable, high-torque reduction in a compact, space-efficient housing. Part of Boston Gear s renowned **F Series** line, this unit combines a **right-hand, single-reduction worm gear design** with a **20-inch center distance** and a **5:1 gear ratio**, making it ideal for applications requiring smooth, low-speed operation with high starting torque. The **B5 housing**, constructed from durable cast iron, ensures exceptional strength and resistance to wear, while its **flanged mounting configuration** allows for versatile installation in tight or confined spaces. The worm gear itself is crafted from hardened steel, paired with a bronze worm wheel to minimize friction, reduce noise, and extend operational longevity, even under heavy loads or continuous duty cycles. This reducer features a **T267747 shaft configuration**, which includes a **1-inch diameter input shaft** with a **keyed spline** for secure coupling to motors or drives, and a **1-inch diameter output shaft** with a **keyed bore** for direct attachment to driven equipment. The unit s **self-locking capability** thanks to the inherent friction of the worm gear mechanism prevents back-driving, making it well-suited for applications where holding torque is critical, such as conveyor systems, material handling, or industrial automation. With its **IP54 protection rating**, the F718-20-B5-G is built to withstand moderate environmental contaminants, ensuring dependable performance in factory, warehouse, or outdoor settings where dust and moisture may be present. Whether integrated into a conveyor belt system, packaging machinery, or heavy-duty lifting equipment, this worm reducer delivers efficient power transmission with minimal maintenance, making it a cost-effective solution for demanding industrial applications.

### **Boston Gear F718-20-B5-G Worm Reducer (T267747) Pros and Cons**

1. **High Torque Capacity** The worm gear design provides strong torque multiplication, making it suitable for heavy-duty applications such as conveyors, mixers, and industrial machinery.

2. **Compact and Space-Efficient** Worm gear reducers are generally more compact than other types (e.g., helical or planetary), allowing for easier installation in tight spaces.

3. **Quiet Operation** Worm gears operate smoothly with minimal noise, which is beneficial in applications requiring low vibration and quiet performance.

4. **Self-Locking Mechanism** The design prevents backdriving, meaning the output shaft cannot rotate the input shaft without external force, which is useful for holding loads in place.

5. **Durable Construction** Boston Gear is known for robust manufacturing, with high-quality materials and precision machining, ensuring longevity in demanding environments.

6. **Wide Range of Applications** Suitable for conveyor systems, packaging equipment, material handling, and other industrial machinery where speed reduction and torque amplification are needed.

7. **Easy Maintenance** Some models allow for straightforward lubrication and inspection, reducing downtime for upkeep.

8. **Compatibility with Motors** Works well with standard electric motors, making integration straightforward in motor-driven systems.

1. **Lower Efficiency** Worm gear reducers typically have lower efficiency (around 70-90%) compared to helical or planetary reducers (often 95% or higher), leading to more heat generation and energy loss.

2. **Limited Speed Reduction Range** While effective for moderate reductions, they may not be ideal for very high speed reductions (e.g., ratios beyond 100:1) where other reducers (e.g., planetary) perform better.

3. **Heat Generation** Due to sliding contact between worm and gear, friction can generate heat, requiring adequate cooling or lubrication in continuous operation.

4. **Higher Initial Cost** Compared to simpler gearboxes, worm reducers can be more expensive upfront, especially from reputable brands like Boston Gear.

5. **Sensitivity to Lubrication** Poor lubrication can lead to premature wear, so regular maintenance is necessary to prevent failure.

6. **Limited Backlash Adjustment** Unlike some other reducers, worm gear backlash is not easily adjustable, which may affect precision in certain applications.

7. **Not Ideal for Reversible Applications** The self-locking feature makes it unsuitable for systems requiring frequent bidirectional motion.

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### **Conclusion**

The **Boston Gear F718-20-B5-G worm reducer** is a reliable choice for applications requiring high torque, compact design, and self-locking capabilities. It excels in industrial settings where space is limited and backdriving must be prevented, such as conveyors, mixers, or material handling equipment. However, its lower efficiency, heat generation, and higher cost compared to alternatives like helical or planetary reducers must be considered. If energy efficiency and high-speed reduction are priorities, other gear types may be more suitable. For applications where torque, compactness, and self-locking are critical, this reducer remains a strong option with proper maintenance.

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### **Recommendation**

- Your application requires high torque and a self-locking mechanism (e.g., holding a load stationary).

- Space constraints make a compact design essential.

- Noise reduction is important, and the application does not demand extremely high efficiency.

- You can accommodate regular lubrication and maintenance to mitigate heat and wear.

- Energy efficiency is a top priority, and lower heat generation is critical.

- You need very high-speed reductions or reversible motion.

- Your budget allows for a more efficient but slightly larger gearbox.

For most **industrial conveyor, packaging, or material handling applications**, the **F718-20-B5-G** is a solid, durable choice from a trusted manufacturer. Ensure proper sizing, lubrication, and installation to maximize its lifespan and performance.

Details:

Extra Information:: The Boston Gear F718-20-B5-G is a high-durability, cast-iron 700 Series Worm Speed Reducer. We proudly sell hard-to-find parts, components, and machines to makers manufacturers. 30 Day Warranty. Rush Orders Ship Same Day.

Open to Making Bulk Deals. Glad you stopped by. In the industrial world, 700 Series is widely considered gold standard for right-angle drives due to its rugged construction and ease of maintenance.

part #: f71820b5 prices

• $390.00-$711.99

specifications oelemot:

• brand: Boston Gear
• mpn: F718-20-b5-g
• part type: Reducer

shipping oelemot:

• cost: $30.89
• class: Standard, Expedited, One-day
• transit: 4-8 Days
• carrier: UPS
• service: UPS Ground, UPS 2nd Day Air, UPS Next Day Air
• type: Calculated

payments oelemot:

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

general oelemot:

• Industrial Automation Motion Controls > Electric Motors > General Purpose Motors
• condition: Used

seller oelemot:

• rating: 99.7%
• city: El Paso, Texas
• # reviews: 21223

returns oelemot:

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

offer oelemot:

• quantity: 1
• sold: 0
• availability: In Stock
• started: February 23, 2026
• best offers: True
• options: Ship-to-home

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