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  • November 05, 2026

ZLY Cylindrical Gear Reducer Input Power Table: A Complete Sizing Guide

H1: ZLY Transmission Input Power Meter: Engineer's Complete Selection Guide

When specifying heavy-duty transmission solutions, ZLY cylindrical gear reducers are the

 preferred choice for two-stage industrial applications.

ZLY gear reducer for 1500 rpm motor.

H2: How to Read the ZLY Nominal Input Power Chart

The provided table maps Nominal Input Power (kW) across three key variables:

  1. Nominal Ratio (i): From 6.3 to 20 (representing the speed reduction).

  2. Input Speed (n1): 1500, 1000, and 750 r/min (corresponding to common 4-pole, 6-pole, and 8-pole motors).

  3. Frame Size (规格): From ZLY112 up to ZLY710.

ZLY cylindrical gear reducer Real Data Examples from the Chart:

  • High-Speed, Low-Ratio: For a ratio of 6.3 running at 1500 r/min, the smallest frame (ZLY112) handles 37.4 kW, while the largest (ZLY710) scales up to a massive 6229 kW.

  • Torque Multiplication: Notice how lower speeds increase torque capacity. At a ratio of 7.1 and 1500 r/min, the ZLY112 is rated at 34 kW (Output speed: 210 r/min).

  • Ratio Impact: For the ZLY280 frame at 1500 r/min, increasing the ratio from 6.3 to 20 drops the allowed power from 578 kW down to 142 kW, as internal gear stresses increase.

H2: Mechanical vs. Thermal Power Limits

The chart above shows mechanical power limits—the point at which gears or bearings might fail. However, continuous operation at these maximums can cause overheating.

If your ZLY reducer operates in high ambient temperatures or continuous duty cycles, you must verify the Thermal Power (Pt). If the heat generation exceeds the cooling capacity, you may need to add a cooling fan, cooling coil, or select a larger frame size.

H2: Get an Accurate ZLY Gearbox Quote Today

Navigating the ZLY input power chart is just the first step. To ensure a perfect retrofit or new installation, our engineers offer free sizing verification.

Send us your requirements and get a response within 24 hours:

  1. Motor power (kW) and Input speed (r/min)

  2. Required Output speed or Ratio (i)

  3. Daily operating hours and Load type (Uniform/Shock)

  4. Mounting position (I to IX)

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