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Nantong Boliu Electromechanical Technology Co., Ltd. is a company specializing in the R&D and manufacturing of lithium-powered gardening tools and handheld equipment. We maintain integrated operations covering design, injection molding, battery integration, assembly, and testing. As a famous China 21V 4815 Brushless Motor 350 Torque Electric Wrench Factory and 21V 4815 Brushless Motor 350 Torque Electric Wrench Manufacturers, our product range includes mini chainsaws, pruning shears, lawn mowers, hedge trimmers, and other categories. The company provides OEM/ODM services for well-known e-commerce brands globally, with products exported to markets in Europe, North America, Southeast Asia, and beyond.
We take responsibility for every product we manufacture. Our dedicated quality control team, comprising senior engineers and skilled technicians, operates advanced testing facilities. Each tool undergoes rigorous evaluation across multiple aspects to ensure safety, durability, and battery lifespan meet stringent quality standards, delivering reliable performance you can trust.
We believe that every tool is a synergy between engineering and user experience. Guided by the principles of performance-driven design, and user-focused innovation, we continuously optimize structure, upgrade key components, and ensure reliable performance in real-world scenarios.
BL-B4 Brushless Lithium Battery Wrench: High-Torque Solution for Heavy-Duty Fastening
The BL-B4 Brushless Lithium Battery Wrench is a professional-grade tool engineered for demanding bolt tightening and loosening tasks. It features a 4815 brushless motor, ensuring efficient power delivery, minimal wear, and long-term reliability.
Performance Metrics: Boasting a maximum torque of 350N, a no-load speed of 2200r/min, and an impact frequency range of 0-1800/3200 times per minute, it handles heavy-duty applications like automotive repair, construction, and industrial assembly with ease. It operates at 21V, providing consistent lithium-powered performance for uninterrupted workflow.
Design & Usability: Its ergonomic grip and balanced weight distribution reduce user fatigue during prolonged use. The brushless technology not only enhances power efficiency but also eliminates the need for regular brush replacement, making it a low-maintenance choice for professionals.
Whether you’re tackling large machinery bolts or structural fasteners, the BL-B4 Brushless Lithium Battery Wrench delivers the torque, speed, and durability required for high-performance fastening. Its robust construction and advanced motor technology make it an indispensable tool for any heavy-duty project.
