Address:20 Meters North of the Intersection of Shanhai Avenue and Liuhui Avenue, Changyuan City, Xinxiang, Henan Province
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Gearbox
Introduction
Main parameters
| Series | QY160-QY710 |
| Speed Ratio | I=16-400 |
Complies with JB/T10816-2007 and JB/T10817-2007 standards for hard-tooth-surface reducers for cranes.
The series includes QYS-type (three-point support) and QYD-type (base-mounted) hard-tooth-surface reducers for cranes.
Available in three-stage, four-stage, and combined three/four-stage configurations.
Supports flexible installation: vertical, horizontal, or even at deflected angles.
Welded housing construction.

Purui reducer gearbox is the core transmission solution in the field of lifting equipment. It is specially designed for bridge/gantry cranes, port machinery, and metallurgical equipment. It integrates German FLENDER technical standards and has passed ISO 9001 and CE certification.
parameter
| Parameter | Scope |
| Rated output torque | 12,000–200,000 N·m |
| Transmission ratio (i) | 10–450 |
| Center distance (a) | 160–800mm |
| Matching motor power | 15–630 kW |
| Mechanical efficiency | ≥96% % |
| Working temperature | -25℃ ~ +50℃ |
| Protection level | IP55 |
| Explosion-proof certification | Ex d IIC T4 |
| Vibration standards | ISO 10816-3 Class B |
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