QYQY Type Crane and Hoist Cylindrical Gear Reducer
Crane Reducers GUOMAO QY
QY are crane gear reducers with hardened and ground teeth, designed for frequent reversing and heavy duty cycles. Two structural lines: QY…S with three-point suspension (allows horizontal, vertical and inclined mounting) and QY…D on a base frame. Three- and four-stage versions plus the combined QY34. 15 sizes by centre distance 160–800 mm, rated low-speed shaft torque 2.8–355 kN·m, ratios 16–90 and 100–400. Gears are carburised, quenched and NILES-ground; per-stage efficiency 0.98. They replace the ZQ, QJ and ZSC reducers.
Specifications
- Types
- QY3S/QY3D (3 stages), QY4S/QY4D (4 stages), QY34S/QY34D (combined)
- Sizes
- centre distance 160–800 mm (15)
- Ratios
- 16–90 (three-stage), 100–400 (four-stage)
- Rated low-speed shaft torque
- 2.8–355 kN·m
- Permissible input power (duty M5)
- 1.1–3,510 kW at 600–1,500 rpm
- Stage efficiency
- 0.98
- Low-speed shaft
- cylindrical with key (P), involute spline (H), gear coupling end (C, sizes 180–560 mm)
- Operating conditions
- gear pitch-line speed up to 20 m/s, input up to 1,500 rpm, −40…+45 °C, reversible
Applications
- Hoisting mechanisms of overhead and gantry cranes
- Travel drives of cranes and trolleys
- Slewing and luffing mechanisms of port cranes
- Winches and mine hoisting installations
- Drives of metallurgical and stockyard reclaimers
We will select the right size for your task and prepare a quotation under a direct SDS contract.
