Overview
TW‑Series bolt tensioners are specially engineered hydraulic bolt tensioning tools for wind turbine bolt tightening operations, widely applied for on‑shore and offshore wind farm bolt assembly, maintenance and overhaul.
Working at max operating pressure 1500 bar, this series covers bolt sizes M30‑M64, load capacity from 465 kN up to 2221 kN, with 8‑10 mm working stroke. The double‑stage cylinder design delivers longer stretching length, making it ideal for high‑precision bolt pre‑loading on wind turbine towers, flanges and hub connections.
The tensioner can be matched with our HEP‑series ultra‑high‑pressure electric pumps or HAP‑series ultra‑high‑pressure air pumps to meet different site power‑supply conditions, whether in wind‑turbine tower cabins, remote wind‑field sites or offshore platforms.
Key Features
Compact & Light‑weight Structure Light‑weight and compact overall design enables operation inside narrow and confined spaces inside wind turbine nacelles and tower flanges, easy for technicians to handle and install.
Excellent Anti‑corrosion Performance High‑strength special steel body with advanced surface treatment. Great rust‑proof and corrosion‑resistant performance, well‑adapted to harsh outdoor, coastal and offshore wind‑farm working environments.
Double‑stage Cylinder Design Adopts double‑stage cylinder structure to increase bolt stretching length, which improves working efficiency for long‑bolt tensioning requirements of wind power equipment.
Automatic Retraction Mechanism Built‑in automatic retraction mechanism for heavy‑duty cycles. After tensioning completes, the piston retracts automatically, simplifying repetitive bolt‑tensioning work and lowering operator workload.
Wide Compatibility for Power Units Rated working pressure 1500 bar, compatible with ultra‑high‑pressure manual pumps, pneumatic air pumps and electric hydraulic pumps. Users can select the matching power source according to actual site conditions.
Note: This product runs under ultra‑high‑pressure conditions. Please only use hoses and fittings specified for 1500 bar service. Refer to our hydraulic components catalogue for matching hose and connector options.
Application Scenarios
On‑shore wind turbine tower flange bolt tensioning
Off‑shore wind power unit maintenance and bolt overhaul
Wind turbine hub and blade connection bolt pre‑loading
Heavy‑duty high‑strength bolt tightening for energy and petrochemical projects
Why Choose Our TW‑Series Bolt Tensioners for Wind Power
Wind turbine bolt connection directly determines equipment safety and service life. Uneven bolt pre‑load will cause flange leakage, vibration and even safety hazards. Hydraulic bolt tensioning provides uniform, accurate bolt stretching force, avoiding torque‑related friction errors.
Our TW‑series wind turbine bolt tensioners are developed targeting wind‑power industry working conditions. Compact size suits narrow nacelle space; anti‑corrosion material copes with coastal salt‑fog environment. Multiple power‑unit options help customers solve various on‑site power‑supply limitations.
We provide complete supporting accessories including high‑pressure hoses, connectors and pumps. Custom service is available for special bolt‑size requirements. All products are strictly tested before delivery to guarantee stable and reliable performance for your wind‑farm projects.
If you have technical questions or want to get quotation and catalog, please feel free to contact our engineering sales team.
