QYGUOMAO
Crane Reducers .
QY Type Crane and Hoist Cylindrical Gear Reducer
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.
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
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