Products for Wind Turbines

Modular Gearboxes

The modular gearbox platform SHIFT covers the whole wind market, from 3.000 kNm to 8.000 kNm.

Key Facts

Competitive

Shorter time-to-market at reduced development costs.

Reliable

High reliability building on ZF’s experience and innovation.

Flexible

High flexibility and turbine extended lifetime.

What can Modular Gearboxes provide?

SHIFT, ZF’s modular gearbox platform anticipates the growing number of torque segments in the wind market. The modular structure provides flexibility in turbine development and allows further optimization over the life of the turbine. The entire modular SHIFT platform is extended across torque ranges from 3.000 up to 8.000 kNm, covered by four platforms variants. Each platform variant covers a predefined market segment in terms of prevailing wind speeds, needed power ranges and capacity factors.

Details

FLEXIBILITY

SHIFT's unique modular platform structure provides greater flexibility in the development of new turbines. Modularity offers high flexibility in adapting wind turbine designs to changing market requirements and allows further optimization over the life of the turbine.

LOGISTICAL AND ECONOMICAL CONSTRAINTS

The platform designs are also driven by logistical constraints and the interchangeability of components within each SHIFT ‘xk’ platform is taken into consideration. Keeping the gear unit interfaces and outer dimensions identical across the torque range of a SHIFT ‘xk’ platform eliminates the need for major drive train/nacelle redesigns over the lifetime of the wind turbines. Using standardized building blocks inside the gearbox leverages the platform supply chain and operational synergies.

LONGER LIFETIME

SHIFT allows OEMs to optimize the gearbox to site specific loads, or even mix different platform variants within one single wind site. This means project development costs improve and the product lifetime increases.

SHIFT 7k

  • Turbine output: 5.5- 9.2 MW
  • Turbine rotor diameter: 155 - 195 m
  • Ratio: up to 200
  • T_mech: 7.000 - 8.000 kNm

*All values calculated for onshore at 80m/s tip speed; IEC 1 maximum rotor and MW output relates to 100m/s for offshore applications

SHIFT 6k

  • Turbine output: 4.5- 8.6 MW
  • Turbine rotor diameter: 150 - 190 m
  • Ratio: up to 200
  • T_mech: 5.300 - 7.300 kNm

*All values calculated for onshore at 80m/s tip speed; IEC 1 maximum rotor and MW output relates to 100m/s for offshore applications

SHIFT 4k

  • Turbine output: 3.1- 5.2 MW
  • Turbine rotor diameter: 130 - 180 m
  • Ratio: up to 175
  • T_mech: 3.500 - 5.300 kNm

*All values calculated for onshore at 80m/s tip speed; IEC 1 maximum rotor and MW output relates to 100m/s for offshore applications

SHIFT 3k

  • Turbine output: 2.7 - 4.3 MW
  • Turbine rotor diameter: 120 - 170 m
  • Ratio: up to 185
  • T_mech: 3.000 - 4.000 kNm

*All values calculated for onshore at 80m/s tip speed; IEC 1 maximum rotor and MW output relates to 100m/s for offshore applications

SHIFT

In response to today's wind market revolution, with efforts to reduce subsidy costs and spur efficient innovation into the future, ZF has developed a new kind of wind gearbox - a platform highly scalable and supporting new turbine designs that will innovate our future energy supply.

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