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  3. BOSTON GEAR 51935

BOSTON GEAR 51935 Reducer

51935 Boston Gear Speed Reducer

( Brand: Boston Gear ), ( Manufacturer Part Number: 51935 ), ( Type: Speed Reducer ), ( Unit Type: Unit ), ( Horsepower: .97 Input ), ( Bore Size: 5/8 )

Review BOSTON GEAR Speed Reducer

The Boston Gear Model 51935 Reducer is a high-performance, industrial-grade gearbox designed for heavy-duty applications. This reducer features a compact, yet robust design, making it an ideal solution for various machinery and equipment.

The reducer's housing is made of cast iron, providing excellent strength and durability. It comes with a heavy-duty, 2-stage planetary gear train, which delivers a high torque output while maintaining precise speed reduction. The gearbox's input and output shafts are made of hardened steel, ensuring they can withstand the rigors of continuous use.

The Boston Gear Model 51935 Reducer is available in various ratios, ranging from 1.25:1 to 5.25:1, allowing it to accommodate a wide range of power transmission requirements. It comes with a double-sealed, greaseless bearing design, which minimizes maintenance and eliminates the need for periodic lubrication.

The gearbox's output flange is SAE 54 bolt pattern, which is a standard in various industries, and it can be easily connected to a wide range of power sources and driven equipment. The reducer also comes with a flexible coupling for smooth power transmission and shock absorption.

The Boston Gear Model 51935 Reducer is designed for operation in harsh environments, with a temperature range of -40 F to 180 F (-40 C to 82 C). It is also available with various options such as torsional dampers, brakes, and custom mounting configurations.

The reducer's high-quality construction, robust design, and versatile features make it an excellent choice for various industries, including material handling, mining, oil and gas, and power generation. It is built to deliver reliable, efficient, and long-lasting performance, reducing downtime and increasing productivity.

The Boston Gear Model 51935 Reducer is a gearbox commonly used in various industrial applications due to its robust design and high torque capacity. Here are some pros and cons that might help you make an informed decision about purchasing this reducer:

Pros:

1. High Torque Capacity: The Boston Gear Model 51935 Reducer is known for its ability to handle high torque loads, making it an ideal choice for heavy-duty industrial applications.

2. Durable Design: Its heavy-duty construction, which includes high-quality materials and precision machining, ensures long-lasting performance and reliability.

3. Versatile: This reducer can be used in various industries, including oil and gas, mining, and construction, among others.

4. Customizable: Boston Gear offers various configurations, including different input and output shaft sizes, gear ratios, and materials, to meet specific application requirements.

Cons:

1. Cost: The Boston Gear Model 51935 Reducer is a premium product, and its high-quality components and customizable features come with a correspondingly high price tag.

2. Complex Installation: Due to its size and customizability, installing this reducer can be a complex process that requires expertise and specialized tools.

3. Maintenance: The reducer's heavy-duty design and high torque capacity require regular maintenance to ensure optimal performance and prevent potential failures.

4. Noise: Depending on the application, the reducer may generate significant noise due to its high-torque operation.

In conclusion, the Boston Gear Model 51935 Reducer is a high-performance, heavy-duty gearbox suitable for industrial applications that require high torque capacity, durability, and versatility. However, it comes with a premium price tag, complex installation requirements, and regular maintenance needs.

If you have an industrial application that requires a high-torque gearbox and can afford the premium price, the Boston Gear Model 51935 Reducer is a solid choice. If your application does not require such high torque or if the cost is a concern, there may be other, more cost-effective options available. Ultimately, it's essential to carefully consider your specific application requirements and budget before making a purchase decision.

Details:

Pickup Hours. Item Specifics: BRAND Boston Gear, MANUFACTURER PART NUMBER51935, TYPE Speed Reducer, Warranting Warranty, UNIT QUANTITY1, TYPE Unit, HORSEPOWER.97 Input, BORE SIZE5/8. Distressed packaging; labels removed from box exterior. Buyers MAY NOT arrange their own shipping.

Sizes vary from brand to brand; please be familiar with the you are buying on. All dimensions are approximate.

part #: 51935 prices

  • $85.00-$333.33

specifications toolssupp:

  • brand: Boston Gear
  • mpn: 51935
  • type: Speed Reducer
  • unit type: Unit
  • horsepower: .97 Input
  • bore size: 5/8

seller toolssupp:

  • city: Kansas City, Missouri
  • # reviews: 633306
  • rating: 99.5%

offer toolssupp:

  • options: Ship-to-home
  • best offers: True
  • quantity: 1
  • started: January 21, 2026
  • availability: In Stock
  • sold: 0

general toolssupp:

  • condition: New other see details
  • Motors > Automotive Tools Supplies > Other Auto Tools Supplies

shipping toolssupp:

  • transit: 2-6 Days
  • class: Standard, Expedited
  • cost: $39.65
  • type: Calculated
  • service: UPS Ground, USPS Ground Advantage, UPS 2nd Day Air
  • carrier: UPS, USPS

returns toolssupp:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Buyer

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  • other
  • wallet: Paypal
  • credit card: Diners-club
type: speed reducer, unit type: unit, horsepower: .97 input, bore size: 5/8,
category: auto parts > tools supplies > auto tools supplies, sku: 11374287651141663,
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