Jingkun 450 Heavy-Duty Floor Grinder – Wide Planetary Disc, Universal Voltage, Rock-Solid Performance
Looking to combine efficiency, flatness and operator comfort in concrete grinding? The Jingkun 450 Grinder redefines professional standards with a 450mm ultra-wide grinding width, a 4kW motor, and a 5.5kW vector variable frequency drive.
💪 Powerful Core with Variable Speed
Driven by a 4kW high-efficiency motor and a 5.5kW high-performance vector VFD, it delivers smooth, surge-free power. Whether removing old epoxy, levelling concrete or polishing stone, it provides stable high torque. Stepless speed control lets you switch effortlessly between coarse and fine grinding, while the soft-start feature protects your power supply.
🔄 Planetary Disc Design – Uniform Grinding, Zero Dead Spots
The heavy-duty planetary grinding disc, with perfectly synchronised rotation and revolution, ensures an even, fine scratch pattern across the entire 450mm grinding area – eliminating missed patches and wave marks. Wider coverage per pass dramatically shortens project time and cuts labour costs.
✋ Ergonomic Handle – Easy Operation, Even During Long Hours
Purpose-built for intensive work, the ergonomic horizontal handle offers vibration-dampening, non-slip grip and balanced two-hand force distribution. It effectively reduces fatigue over extended operation. Precise control response keeps the machine steady and smooth when moving forward, turning, or working along edges and details.
⚡ Universal Voltage – One Machine, Any Job Site
Break free from power supply limitations. The unique power compatibility solution supports common 220V/240V single-phase residential power, connects seamlessly to 380V three-phase industrial power, and allows flexible three-phase wiring. From home basements and retail renovations to large factory and warehouse floors – it’s ready to work on arrival. No more voltage mismatch headaches.
🧱 213 kg Robust Build – Flatter, More Stable Grinding
With a total machine weight of 213 kg and a rigid frame structure, it delivers excellent self-weight grinding pressure. The solid mass effectively suppresses vibration, keeping the grinding disc in constant, even contact with the floor for superior flatness and consistent efficiency. Tough and durable, it’s your reliable productivity partner.
Jingkun 450 – Achieve every perfect floor with wide coverage, powerful drive, and intelligent control.
In my experience working with various concrete floor grinders, the Jingkun 450 stands out due to its balance of power, precision, and operator comfort. The 450mm wide planetary disc significantly reduces the time spent grinding large surface areas by ensuring even coverage without missed spots or wave marks. This is a game-changer for contractors looking to optimize efficiency and reduce labor costs. The step-less speed control is another major advantage, allowing easy switching between coarse removal and fine polishing. I've found that this flexibility helps prevent damage to delicate surfaces while maintaining productivity. The soft-start feature also protects the power supply, a thoughtful addition that minimizes electrical issues on site. One of the most noticeable benefits during extended use is the ergonomic handle design. The vibration-dampening, non-slip grip combined with balanced force distribution really reduces operator fatigue, which is crucial in long shifts. Precise control response makes it easier to maneuver around edges and detailed areas, improving the overall finish quality. Additionally, the universal voltage compatibility is extremely convenient. Whether working in a residential setting with common 220V/240V power or a large industrial facility with 380V three-phase power, the machine adapts seamlessly without the need for additional converters or modifications. This flexibility saves time and reduces logistical headaches. The 213 kg robust build also contributes to consistent grinding flatness by applying effective self-weight pressure and suppressing vibrations. This ensures steady contact between the disc and the floor, resulting in a smooth, professional finish every time. For those who prioritize durability and reliability, the Jingkun 450 is a solid investment. Overall, from my perspective as someone who has tested multiple floor grinders, this machine combines powerful performance with user-friendly features tailored for heavy-duty applications. Whether you're removing old epoxy coatings, leveling concrete, or polishing stone surfaces, the Jingkun 450 offers excellent versatility and dependability that will help achieve perfect floors efficiently.
