LUFKIN GEAR REDUCER MODEL NM800C RATIO 3.77 TO 1 INPUT 4450 RPM 568 HP

LUFKIN GEAR REDUCER

MODEL NM800C SER # 8075

RATIO 3.77 TO 1 INPUT 4450 RPM 568 HP

SERVICE FACTOR 2.46

SERVICE RATING 230 HP

The Lufkin Model NM800C parallel shaft gear reducer is a rugged, heavy-duty industrial gearbox engineered for high-speed applications like centrifugal compressors, pumps, and blowers. Operating at an input speed of 4,450 RPM while transmitting 568 HP pushes this specific setup into high-speed fluid-film bearing configurations typically backed by custom engineering.

Based on your specified gear ratio of 3.77 to 1, your final output speed calculates to exactly 1,180.37 RPM.

• Operational & Calculations Breakdow
• Input Parameters: 568 HP @ 4,450 RPM
• Output Speed: 1,180.4 RPM (Input RPM ÷ 3.77 Ratio)
• Output Torque: Approximately 30,300 lb-in (2,525 lb-ft) transmitted to the driven equipment.
• Application Environment: Given the 4,450 RPM input speed, this NM800C framework is likely operating under Baker Hughes Lufkin High-Speed Parallel-Shaft Standards, which implement proprietary fluid-film/journal bearings and specialized pressure lubrication loops rather than standard low-speed anti-friction bearings.
  

Understanding the 'NM' Model Code Lufkin utilizes specific naming nomenclatures for its industrial gear divisions:

• "N" indicates a standard parallel-shaft configuration with single or double helical gearing.
• "M" specifies a modified or medium-speed / marine configuration, built to handle the higher pitch-line velocities associated with a 4,450 RPM input.
• "800" refers to the physical center distance (size) of the gearing framework.
• "C" represents the generation or casing revision series.
  

The Lufkin Model NM800C gear reducer is a durable, refurbished industrial unit designed for high-speed applications. It features a gear ratio of 3.77:1, supporting an input speed of 4,450 RPM and delivering up to 568 HP. This parallel shaft gear reducer is suitable for driving high-power machinery such as compressors, pumps, and blowers, making it an essential component in demanding industrial settings. The NM800C model employs a robust design with specialized fluid-film bearings, which are preferable for high-speed operations. With an output speed of approximately 1,180 RPM, it handles substantial output torque, enhancing performance reliability. This gear reducer is also engineered to operate under heavy loads efficiently, thanks to a service factor of 2.46 and a service rating of 230 HP, ensuring it meets rigorous industrial standards. This gear reducer model is part of Lufkin's specialized series, with designations indicating its tailored configurations. Its compact design and efficient construction make it an ideal choice for businesses requiring high-capacity, reliable gear reduction solutions. Whether replacing or upgrading, the Lufkin NM800C provides a dependable solution for various industrial applications.