As a German enterprise super nut manufacturer, we provide super nut custom development, customization service and factory quotation. KPMBOLT super nuts adopt forged nut body and German imported jack screws, featuring anti-fatigue and anti-loosening performance, suitable for onshore and offshore wind power equipment.
Wind power new energy is the core industry of clean energy transformation, and wind turbine equipment operates stably in complex environments such as high altitude, open fields and offshore areas. Tower flanges, main frame, blade connection parts and transmission system bearings bear long-term alternating vibration, wind impact and temperature changes, putting forward extremely high requirements for fastener fatigue resistance and anti-loosening performance. As China’s sales entity, Shanghai Kampman Transmission Machinery Co., Ltd. has long been deeply engaged in wind power transmission supporting fields and established in-depth supporting cooperation with major mainstream manufacturers, perfectly matching the working conditions of wind power reducers and transmission gearboxes, and providing professional fastening supporting solutions for core wind power transmission equipment.
Endowed with century-old German heavy-duty fastening technology, we are a professionalsuper nut manufacturer and production factory. All KPMBOLT super nuts adopt integral forged nut body and German original imported jack screws, completely eliminating hidden dangers such as screw fracture and fatigue failure under harsh working conditions. To shorten domestic delivery cycle and optimize cost, we have built precision processing bases in Nanjing and Shijiazhuang, adopting the model of “German imported core parts + domestic precision processing” to ensure German original quality, fast delivery and high cost performance.
We launch five series of multi-material super nuts to achieve full coverage of onshore and offshore wind power working conditions:
1. Onshore Wind Power General Grade: ASTM A193 B7 / 42CrMo KPMBOLT Super Nut
Suitable for conventional onshore wind tower flanges and auxiliary connections without strong corrosion. With mature technology and stable vibration resistance, it is the preferred matching solution for general onshore wind power equipment.
2. Wind Turbine Cabin High-temperature Grade: ASTM A193 B16 KPMBOLT Super Nut
Applied to cabin internal high-temperature pipelines and gearbox peripheral connections. It has excellent high-temperature creep resistance and anti-relaxation performance, maintaining stable preload for a long time and avoiding equipment vibration failure caused by high-temperature fatigue.
3. Wind Power Heavy Impact Grade: 40CrNiMo / 4340 KPMBOLT Super Nut
Specially used for wind turbine blade flanges, main frame and tower main connection flanges. The nickel-based high-toughness material resists strong wind impact and long-term alternating fatigue damage, ensuring the overall structural stability of wind turbines.
4. Medium-high Temperature Alternating Grade: ASTM A453 660B / A286 KPMBOLT Super Nut
Adapted to mountain and plateau wind farms with large temperature difference. It effectively inhibits preload attenuation under alternating temperature conditions and meets the long-term operation requirements of wind power equipment in all seasons.
5. Offshore Wind Power Corrosion Resistant Grade: Inconel 718 KPMBOLT Super Nut
Certified by NACE MR0175, this nickel alloy material resists chloride corrosion and stress cracking, adapting to offshore salt spray and high-humidity harsh environments, and solving the failure problems of offshore wind power fasteners.
All KPMBOLT super nuts adopt German pure axial preload structure, with uniform preload distribution and high locking accuracy, fundamentally resisting loosening caused by vibration and load fluctuation. The products can directly replace original wind power fasteners without on-site modification, and are easy to install in narrow high-altitude spaces.
As a professional super nut production factory, we provide exclusive super nut custom development and non-standard customization services for special wind power equipment and extreme working conditions. All products have complete traceability and full set of official test documents:
1. Original Copy – Metal Material Test Report
2. Material Re-inspection Report
3. Hardness Test Report
4. Ultrasonic Testing Report
5. Mechanical Properties Report
6. Magnetic Particle Inspection Report
7. Dimensional Inspection Record
8. Photo of the Packaging
With forged body and German imported core accessories, KPMBOLT super nuts have outstanding anti-fatigue, anti-vibration and anti-corrosion performance. The maintenance-free cycle is synchronized with the wind turbine overhaul cycle, greatly reducing high-altitude operation and maintenance costs and power generation loss. Relying on German technical advantages, dual-base production strength, and the professional market service support of Shanghai Kampman Transmission Machinery Co., Ltd., we provide safe, stable and long-term fastening guarantees for new energy wind power equipment, assisting the high-efficiency and low-carbon development of the wind power industry.
References:
[1] Wind Turbine Mechanical Fastening Technical Specification;
[2] KPMBOLT Multi-material Parts Manufacturing Inspection Plan;
[3] Research on Anti-fatigue Performance of Fasteners Under High-altitude Alternating Loads.