BOSTON GEAR EN65351-FMG Altra Motion

( Brand: Boston Gear ), ( Manufacturer Part Number: EN65351-FMG )

Review BOSTON GEAR Altra Industrial Motion En65351fmg New

The **Boston Gear EN65351-FMG Altra Motion** is a high-performance, precision-engineered helical gearmotor designed for demanding industrial applications where reliability, efficiency, and compact power delivery are paramount. Part of Boston Gear s **Altra Motion** series, this gearmotor combines robust construction with advanced helical gearing technology to deliver smooth, low-noise operation while maximizing torque output in confined spaces. Built with a **1.5-inch (38mm) hollow shaft** and a **1.5-inch (38mm) input shaft**, the EN65351-FMG is engineered to integrate seamlessly into automated machinery, conveyor systems, packaging equipment, and other motion control applications where space optimization and torque precision are critical. Its **helical gear design** ensures reduced backlash and improved load-bearing capacity, making it ideal for applications requiring high torque at low speeds, such as material handling, robotics, or precision positioning systems. The gearmotor s **IP65-rated enclosure** provides robust protection against dust, dirt, and light water ingress, ensuring durability in harsh environments, while its **NEMA 17 or 23 frame** (depending on the motor pairing) allows for versatile mounting options. With a **12:1 gear ratio**, the EN65351-FMG balances speed reduction with efficiency, minimizing energy loss while maintaining consistent performance under continuous operation. Whether paired with a **3-phase AC motor** for industrial automation or a **brushless DC motor** for more precise control, this gearmotor excels in applications where reliability and performance are non-negotiable. Its modular design also allows for easy customization, making it a versatile solution for engineers seeking a balance between compact form factor and high-performance torque delivery.

### Pros and Cons of buying a Boston Gear EN65351-FMG (Altra Motion EN65351FMG)

1. **High Torque and Power Density** The EN65351-FMG is a robust planetary gearmotor designed for heavy-duty applications. It delivers high torque output relative to its size, making it suitable for industrial machinery, robotics, and automation systems where power efficiency is critical.

2. **Compact and Space-Efficient Design** As a planetary gearmotor, it offers a compact footprint compared to traditional parallel-axis gearboxes. This is advantageous in applications where space is limited, such as in robotic arms, conveyor systems, or automated equipment.

3. **High Efficiency** The EN65351-FMG is engineered with precision bearings and optimized gear meshing, resulting in lower energy loss and improved overall efficiency. This can lead to cost savings in applications running continuously.

4. **Versatile Mounting Options** Boston Gear (now part of Altra Motion) designs its gearmotors with multiple mounting configurations, allowing for easy integration into various mechanical setups. This flexibility is useful in custom automation projects.

5. **Durability and Longevity** Built with high-quality materials and robust construction, this gearmotor is designed to withstand demanding environments, including high-speed operation, shock loads, and extended runtime. Proper maintenance can extend its operational life significantly.

6. **Compatibility with Servo and Stepper Motors** The EN65351-FMG can be paired with servo or stepper motors for precise motion control, making it ideal for applications requiring accurate positioning, such as CNC machines, pick-and-place systems, or robotic arms.

7. **Wide Range of Input Speeds and Torques** The gearmotor is available in various configurations to match different input speeds and torque requirements, allowing engineers to select the optimal model for their specific application.

8. **Support from Altra Motion** As part of Altra Motion Corporation, Boston Gear benefits from a strong global support network, including technical documentation, customer service, and access to spare parts. This can be invaluable for troubleshooting or maintenance.

9. **Quiet Operation** The design minimizes noise generation, which is beneficial in applications where operational noise levels must be kept low, such as in cleanrooms, laboratories, or sensitive manufacturing environments.

10. **Backlash Reduction** Planetary gear designs inherently reduce backlash compared to traditional spur or helical gearboxes, improving the precision of motion control systems.

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1. **Higher Initial Cost** Compared to standard gearmotors or simpler mechanical transmissions, the EN65351-FMG is more expensive due to its advanced design, precision manufacturing, and high-performance components. This may be a barrier for budget-conscious projects.

2. **Complexity in Integration** While the gearmotor offers flexibility, integrating it into a system may require additional engineering effort, such as custom shafts, couplings, or mounting brackets. This could increase development time and costs.

3. **Maintenance Requirements** Although durable, planetary gearmotors require regular maintenance, such as lubrication checks, bearing inspections, and alignment verification. Neglecting maintenance can lead to premature wear or failure.

4. **Limited Customization for Extreme Conditions** While the gearmotor is robust, extreme environments (e.g., high-temperature, corrosive, or highly abrasive conditions) may require additional sealing, cooling, or material modifications, which could add complexity or cost.

5. **Potential for Higher Heat Generation** In high-torque or high-speed applications, the gearmotor may generate more heat, necessitating cooling solutions (e.g., fans, heat sinks, or liquid cooling) to prevent overheating and ensure longevity.

6. **Dependence on Supplier Support** Since Altra Motion is a large corporation, response times for custom orders, technical support, or urgent spare parts may vary. Smaller projects or startups might face delays if they rely heavily on their support.

7. **Weight Considerations** While compact, the gearmotor is still heavier than some alternative transmissions. This could impact the overall weight distribution in mobile or portable applications.

8. **Learning Curve for New Users** Engineers unfamiliar with planetary gearmotors may require time to understand their operation, maintenance, and integration into their systems, potentially slowing down project timelines.

9. **Potential for Higher Noise in Some Configurations** While generally quiet, certain operating conditions (e.g., misalignment or excessive load) can increase noise levels, which may not be ideal for noise-sensitive applications.

10. **Limited Availability of Off-the-Shelf Variants** Depending on the specific torque, speed, or voltage requirements, the exact model may not be readily available, requiring customization or longer lead times.

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The Boston Gear EN65351-FMG (Altra Motion EN65351FMG) is a high-performance planetary gearmotor well-suited for applications demanding precision, efficiency, and durability. Its compact design, high torque output, and compatibility with servo motors make it an excellent choice for industrial automation, robotics, and motion control systems. However, its higher cost, maintenance needs, and potential integration challenges may not justify its use in simpler or budget-limited applications.

For projects where **space efficiency, torque density, and long-term reliability** are critical such as in robotic arms, CNC machines, or heavy-duty conveyor systems the EN65351-FMG is a strong recommendation. Conversely, for applications with **tight budgets, low torque requirements, or non-critical motion control**, alternative gearmotors or simpler transmissions may be more appropriate.

- Your application requires high torque, compact size, and precise motion control.

- You are working on an industrial automation, robotics, or high-precision machinery project.

- You can justify the higher upfront cost with long-term efficiency and durability benefits.

- You have access to proper maintenance and support from Altra Motion.

- Your budget is constrained, and a simpler gearmotor would suffice.

- The application involves extreme conditions that require additional modifications.

- You lack experience with planetary gearmotors, as integration may be complex.

- The torque or speed requirements are modest, and a standard gearbox would work.

Ultimately, the decision should be based on a thorough analysis of your specific application s needs, cost constraints, and long-term operational requirements. Consulting with Altra Motion s technical support or a motion control specialist can also help ensure the gearmotor is the right fit for your project.

Details:

Sells new and surplus product develops channels to purchase such. All products are guaranteed to be working but may show signs of use if purchasing a used product. Call to use a shipping service other than the ones listed. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.

part #: en65351 prices

• $219.99-$1500.00

specifications hydraulivalv:

• brand: Boston Gear
• mpn: En65351-fmg

offer hydraulivalv:

• started: March 15, 2026
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• sold: 0

general hydraulivalv:

• condition: New
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• rating: 96.9%
• city: 1 Millennium Dr, Willingboro, NJ 08046
• # reviews: 9830

shipping hydraulivalv:

• type: Fixed
• cost: $12.90
• class: Standard
• transit: 29-33 Days
• service: Standard

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