W4 Features & Benefits

Planetary Gear Units

1. Fitness for use
Hansen W4 Feature:	Your benefit:
Combination of planetary and helical gear stages Tailor-made design	Compact design, minimum weight Perfect match with application

2. Power and Reliability
Hansen W4 Feature:	Your benefit:
Combination of planetary and helical gear stages Optimum dimensioning of bearings and shafts Continuous oil circulation through the bearings	Excellent strenght, torque capacity, surface durability and low noise performance Ensured required bearing life under specified loads Long, trouble-free working life

3. Installation
Hansen W4 Feature:	Your benefit:
Torque arm or torque reaction plate Hollow input shaft with shrink disc	Ideal load transmission to nacelle structure Reliable and easy to install connection with

4. Spare Parts, Service & Maintenance
Hansen W4 Feature:	Your benefit:
Large inspection cover & option to disassemble gear unit in the nacelle Critical spare parts available on short notice	Easy maintenance and inspection on-site Short repair times