Make shaft attachments without keyways

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Excerpt: Heavy duty models of the popular ETP Express keyless shaft bushings are now available in 20, 40 and 60-mm sizes. ETP Express shaft locking bushings provide fast and frequent mounting/dismounting capabilities with only one radial screw. This saves space in a system and provides accurate mounting …

Couplings 101

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Excerpt: Mechanical couplings connect shafts so one can transmit rotational power to the other. Shafts are never perfectly aligned so the coupling tolerates slight misalignments, but only to a degree. There are three types of misalignment. The center lines of the shafts might be parallel but offset, t …

A 3-MW drivetrain all in one package

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Excerpt: A recent wind-turbine drive combines a two-stage gearbox, coupling, and permanent-magnet generator into one compact package. One design goal for the HybridDrive from manufacturer Winergy (winergy-ag.com) is to reduce drivetrain size. A direct connection between gearbox and generator allows shortenin …

Wind turbine couplings deliver 100,000 nm, retrofit and new

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Excerpt: An ISO 9001:2008 certified manufacturing firms says of its wind turbine couplings now cover a broad range of wind turbine applications. Zero-Max Wind Turbine Couplings are available as an upgrade replacement for existing wind turbines and for OEM applications. Successfully tested under conditions si …

Wind Turbine Torque limiter by Centa

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Excerpt: CENTA produces an enhanced version of its Torque Hub, the slip clutch which offers a simple and low-cost design for torque overload generator protection. In wind power plants, electrical circuit problems are known to cause short-term torque peaks. In this event, slip clutches protect the cost …

A closer look at gearbox-to-generator couplings

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Excerpt: Wind power stations do not rest. Vibrations are pervasive. Constant alternating loads with difficult environmental conditions make metals fatigue and wear earlier than in other applications. Despite that, expectations for efficiency continuously increase. To meet such challenges, KTR Corp., Michigan …

Composite disc couplings for wind turbines

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Excerpt: Plymouth, MN - Zero-Max, Inc.announces introduction of its Composite Disc Couplings for the wind turbine industry. “These couplings withstand extreme misalignment while remaining torsionally stiff and have passed the ‘hell hole’ test at Tehachapi, California Wind Farm,” reports James Motz …

Hydraulic pitch control for wind-turbine blades

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Excerpt: Generating steady shaft speed on a wind turbine means constantly adjusting the pitch of each blade to accommodate wind variations. The blades connect to a huge hub mounted to a shaft that turns a gearbox and a generator. Best turbine efficiency calls for a continuous pitch control on the b …

Composite coupling handles high-power misalignments

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Excerpt: The Ixilflex link coupling absorbs misalignment of power transmission shafts through bushes linked to alternate flanges. The bushes are made by vulcanizing rubber to metal parts under high compression. The coupling can be run in either direction without reversing the coupling. Other features incl …