NBZD250-71-1 Planetary Reducer: Key Specs & Applications

1. Key Technical Parameters

• Frame Size (250): Corresponds to an approximate center distance of 250mm. The housing dimensions and load-bearing capacity are standardized for this frame size. It is typically matched with motors in the 15–45 kW power range (please refer to the specific manufacturer's catalog for exact ratings, as slight variations may exist between different brands).
• Gear Ratio (71): Features a high reduction ratio design. For instance, with a standard input speed of 1500 r/min, the output speed is reduced to approximately 21 r/min (1500 ÷ 71 ≈ 21). This makes it highly suitable for low-speed, high-torque applications, such as conveyor belt drives and mixing equipment.
• Power & Efficiency: As a two-stage planetary reducer (NBD/NBZD series), it achieves a transmission efficiency of up to 96%, making it ideal for medium-to-high power applications.

2. Typical Application Scenarios

• Heavy-Duty Industrial Equipment:
  • Ideal for sectors requiring high torque and reliable transmission, such as hoisting and transportation, construction machinery, and metallurgy/mining operations.
  • Suitable for machinery demanding stable speed reduction, including plastic/rubber extruders and mixing plants.
• Precision Transmission Systems:
  • Applicable in CNC machine tools, robotic joints, and other scenarios requiring high transmission accuracy (typically used in conjunction with servo systems).
• Special Operating Environments:
  • For high-temperature or outdoor operations, it is essential to ensure optimal lubrication (e.g., circulating oil cooling systems) and superior sealing performance to guarantee reliable operation.