PW420~PW440 (i:67-940) 4 stage PW Planetary Winch Gearbox

Model and specification

PW420,PW422,PW424,PW425,PW426,PW427,PW428,PW429,PW430,PW431,PW432,PW432,PW433,PW434,PW435,PW436,PW437,PW438,PW439,PW440

Features

◆ Highly modular design.

◆ Compact structure, small size and light weight.
◆ Wide range of transmission ratio, high efficiency, stable operation and low noise.
◆ Several planet wheels transmit load at the same time, so that power is shunted, to realize the composition and decomposition of the motion.
◆ Can be installed directly inside the drum, save space, especially in the case of narrow space, it is a more economical solution.
◆ Housing and planet carrier are designed through computer simulated deformation and stress analysis.

Product design
◆ Planetary transmission stages:2 stages, 3stages or 4 stages.
◆ Input modes: PW with electric motor input and hydraulic motor input, when hydraulic motor is input, the gearbox comes with hydraulic release—spring brake multi-plate parking brake system.

Product form
Planetary pair transmission stages: 2, 3 or 4.
Input form: the product is equipped with two modular input systems: motor and hydraulic motor. When the hydraulic motor is input, the reducer is equipped with hydraulic release - spring brake multi-plate parking brake system
Product features
PW planetary concealed winch gear box is the ideal driving device of winch mechanism. Compact structure, can be directly installed inside the drum, saving space, especially in the case of small space, it is a more economical solution. Proven quality and performance in demanding working conditions and environments.
The sun gear and planetary gear are carburized and hardened with high-quality alloy steel, the inner gear ring is hardened with high-quality alloy steel, and all gears are ground.
The connecting flanges of the planet carrier and the inner gear ring are made of nodular cast iron, and are optimally designed through computer simulation deformation and stress analysis.
All bearings shall be of well-known brands, with high bearing capacity of bearing system and large safety margin.
Radial skeleton oil seal and V-shaped seal are adopted for input and output, with higher safety and longer service life in complex and severe working environment.
Highly modular design makes batch production more economical and improves supply speed effectively.
Two-stage, three-stage and four-stage planetary gear transmission design, wide speed ratio coverage.
Low operation noise, high transmission efficiency and long service life.
Simple installation and convenient maintenance.
Main application host
Winch ● Capitan ● Tower crane ● Roof crane ● Crane ● Bridge refining crane ● Crawler crane ● True crane ● Offshore platform
Technical parameter
Frame No.:
PW220~PW232 PW320~PW332 PW420~PW440
Output torque: 11 kN. m~1500 kN. m
Reduction ratio: 13~940
Single rope tension: 69 kN~1950 kN

2 stage planetary gearbox
Output torques: 11.6 to 155 KN.m
Rope load: 67 to 408KN
Ratio from i=13 to 28
Gearbox mounted inside winch drum.
Input and output in opposite sense of rotation

3 stage planetary gearbox
Output torques: 25 to 236 KN.m
Rope load: 1 16 to 566 KN
Ratio from i=45 to 141
Gearbox mounted inside winch drum.
Input and output in opposite sense of rotation

4 stage planetary gearbox
Output torques: 47 to 1500 KN.m
Rope load: 180 to 1950 KN
Ratio from i=167 to 940
Gearbox mounted inside winch drum.
Input and output in opposite sense of rotation

Operating Instructions for PW Planetary Concealed Winch Gearbox

PW-CE Certificate