NHM Series Motor | NHM2, NHM6, NHM11, NHM31 | Large Torque Hydraulic Motor

NHM Series Crankshaft Connecting Rod LSHT Hydraulic Motors

Product Overview: The NHM Series (along with YLM, NAM, and IAM series) is the industry-recognized “Power Heart” for industrial and mobile machinery drives. Utilizing the classic Crankshaft Connecting Rod architecture and flat valve distribution technology, these motors are specifically engineered to deliver stable, massive torque at low speeds. This selection spans from the compact NHM2-100 and mid-range NHM6-500/6-3000 to the heavy-duty NHM11-13 and ultra-large NHM7-5000. Renowned for their simple structure, operational reliability, and exceptional shock resistance, they are widely utilized in injection molding machines, marine winches, construction machinery, mining hoists, and heavy-duty conveyors.

Key Technical Advantages:

• Superior Starting Torque: Employs hydrostatic balance technology to minimize friction between the connecting rod and crankshaft, ensuring high mechanical efficiency even at ultra-low speeds.

• Heavy-Duty Shock Resilience: The rugged crankshaft mechanism withstands frequent reversal shocks and massive external loads, ideal for harsh working environments.

• Extensive Displacement Spectrum: Ranging from 100 cc/rev to 5000 cc/rev, offering a vast array of torque output options for various applications.

• Low-Speed Stability: Unique distribution plate design ensures precision fluid delivery, maintaining smooth operation at speeds as low as 1 rpm without “crawling.”

• Longevity & Easy Maintenance: Minimized part count and high wear resistance significantly reduce long-term operational and maintenance costs.

• Target Applications: Injection molding rotary drives, marine deck cranes, rotary drilling rigs, deck winches, and conveyor belt drives.

Detailed Models & Parameters:

• Core Series: NHM, YLM, NAM, IAM Series (Crankshaft Connecting Rod Type).

• Model Keywords: NHM2-100, NHM3-250, NHM6-500, NHM11-13, NHM6-3000, NHM7-5000.

• Technical Specs Decoding:

  • NHM2-100: 100 ml/r displacement, optimized for small, compact drive units.

  • NHM6-500 / 6-3000: Versatile frame sizes balancing speed and power requirements.

  • NHM11 / NHM31: Extra heavy-duty specifications designed for extreme power demands.

  • NHM7-5000: 5000 ml/r ultra-displacement, providing industry-leading torque output.

• Pressure Specs: Rated Pressure 16-25 MPa, with Peak Pressure reaching 31.5 MPa.