ZSY Three-Stage Cylindrical Gear Reducer: Models and Specifications
H1: ZSY series three-stage gear reducer - model and parameter reference
ZSY series Lili three-stage hard tooth surface cylindrical gear reducer. It handles the high
transmission ratio and high torque end of the parallel axis gearbox series, where the two-stage
ZLY requires an oversized housing to achieve the same deceleration. This reference document
covers the ZSY model range and core parameters
H2: ZSY Gear Speed Reducer Model Range and Ratio Coverage
The ZSY series includes fourteen nominal center distances, from ZSY160 through ZSY710 (160, 180,
200, 224, 250, 280, 315, 355, 400, 450, 500, 560, 630, 710 mm). The nominal transmission ratios
run from 22.4 to 100, with standard steps including 22.4, 25, 28, 31.5, 35.5, 40, 45, 50, 56, 63, 71, 80,
90, and 100.
H2: ZSY Power Capacity by Frame Size (Representative Data)
At a nominal ratio of 22.4 and input speed of 1500 r/min, the nominal input power (P₁) scales from the smallest frame to the largest as follows:
| Frame Size | Center Distance (mm) | Nominal Input Power P₁ (kW) at i = 22.4, n₁ = 1500 r/min |
|---|---|---|
| ZSY160 | 160 | 67 |
| ZSY200 | 200 | 98 |
| ZSY250 | 250 | 182 |
| ZSY315 | 315 | 400 |
| ZSY400 | 400 | 780 |
| ZSY500 | 500 | 1,450 |
| ZSY560 | 560 | 1,865 |
H2: Working limit and physical data of ZSY hard tooth reducer
| Parameter | ZSY Series Limit |
| Number of stages | 3 |
| Max input speed (n₁) | ≤ 1500 r/min |
| Max gear peripheral velocity | ≤ 20 m/s |
| Ambient temperature | −40 °C to 45 °C (preheat oil below 0 °C) |
| Rotation | Bidirectional |
| Gear hardness | HRC 54–62 (carburized and ground) |
| Three-stage efficiency | up to 94% |
H2: Technical parameters of ZSY transmission gear reducer
Please inform us of the motor power (kW), input speed (r/min), required ratio, daily operating hours, and on-site ambient temperature. Our engineering team will return the ZSY model recommendation and conduct mechanical and thermal validation, usually within one working day.