Gamesa > gBOX4.5

gBOX 4.5

The 4.5MW gBOX4.5 platform proves we have the knowledge, experience, and resources to develop gearboxes that optimize the torque to mass ratio. By means of its innovative modular design and technology, maximum reliability and compliance with the most demanding standards are ensured.

Cost-efficient performance

Design and validation concepts applied to the gBOX4.5 development, only comparable to those used in demanding industries, such as aerospace, enable us to assure gearbox reliability from the first day in operation.

The main features of the gBOX4.5 platform are:

2-stage (plus a high-speed module) compact drivetrain with main shaft transmitting bending
moments to the main frame
all gears1 made from high grade alloy steels
structural castings made from high quality spheroidal graphite iron
lubrication by splash and electrical pump injection – oil bath ensures all gears, bearings & splines are lubricated during grid loss conditions

The gBOX4.5 platform, nowadays used in the Gamesa G128 Class IIA, G132 Classes III/S wind
turbines, provides clear evidence of the platform’s reliability, ease of assembly and operation, and
state-of-the-art technologies becoming reality.

General Details

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gBOX

– 4.5i38

Rated power

[kW] 4500

Ratio

– 37.88:1

Input torque

[kNm] 3926

Input speed

[rpm] 11.83

Oil type

– ISO VG 320

Oil fill quantity²

[litre] 700

Dry mass³

[kg] 35096

Overall dimensions⁴

[mm] 2540/2985

Bearing arrangement

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Low-speed shaft & intermediate-speed planet shaft

Two rows of integrated tapered (or cylindrical) roller bearings in O-configuration

Intermediate-speed shaft

Deep groove ball bearing

High-speed shaft

Two tapered roller bearings in O-configuration

37604494 / 33389620

info@el-batawi.com

6 El Sad El Aly Street – Dokki