S1J-50YE2
Hoprio/OEM
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| Item No. | S1J-50YE2 | Voltage | 220-240V |
| Frequency | 50-60Hz | Rated Power | 1050W |
| Max. Power | 1400W | No-load Speed | 26000r/min (Adjustable speed optional) |
Size | ∅50mm | Weight | 1.3KGS |

HOPRIO S1J-50YE2 Brushless Die Grinder with Drill Chuck is a high-performance rotary tool engineered for professionals who demand speed, precision, and endurance. Powered by an advanced AC brushless motor and intelligent controller, this die grinder delivers consistent power, maintenance-free operation, and exceptional longevity—setting a new standard in the industry.
At the heart of the S1J-50YE2 lies a high-efficiency brushless motor that eliminates traditional wearing components such as carbon brushes, commutators, and field coils. This design breakthrough offers:
- Zero Maintenance: No carbon brushes to replace—reduces downtime and after-sales service costs.
- Extended Service Life: Engineered to withstand demanding work environments without performance degradation.
- High Power Output: 1050W rated power with a maximum output of 1400W, delivering robust performance for continuous industrial use.
- Variable Speed Capability: No-load speed up to 26,000 r/min with optional speed adjustment, allowing precise control for different materials and applications.
HOPRIO Intelligent Controller
HOPRIO AC BRUSHLESS MOTOR
Unlike standard die grinders, the S1J-50YE2 comes equipped with a precision drill chuck, transforming it into a multifunctional tool capable of both grinding and light drilling tasks. This feature expands its utility across workshops, production lines, and on-site maintenance operations—reducing the need for multiple tools and improving workflow efficiency.
drill-chuck
multiple grinding head
One of the standout advantages of the HOPRIO brushless die grinder is its exceptional compatibility with various power sources:
- Engine Generator Ready: Operates efficiently even with generators lacking built-in inverters, making it ideal for remote job sites, outdoor construction, and areas with unstable grid power.
- Voltage Fluctuation Tolerance: Performance remains stable despite voltage variations, ensuring consistent speed and torque under challenging power conditions.
User protection is integrated into every aspect of the tool's design:
- Anti-Restart Protection: Prevents the motor from automatically restarting after a power interruption or restoration, significantly reducing the risk of accidental startup and enhancing operator safety.
- Soft Start Function: Gradual speed ramp-up minimizes mechanical shock and allows for precise tool engagement.
- Overload and Overheat Protection: Built-in safeguards automatically adjust or halt operation when abnormal conditions are detected, protecting both the user and the tool.
Weighing only 1.3 kg with a slim Ø50mm body, the S1J-50YE2 is designed for fatigue-free operation during extended use. Its compact form factor allows easy access to confined spaces, while the integrated drill chuck adds functionality without compromising balance or handling.
- Metalworking: Deburring, edge breaking, surface finishing, and weld preparation
- Mold & Die Making: Detailed grinding and polishing of complex cavities
- Automotive Repair: Porting, gasket surface preparation, and light drilling
- General Fabrication: Grinding, sanding, and drilling in tight or awkward spaces
- DIY & Professional Workshops: Versatile tool for daily maintenance and custom projects
HOPRIO S1J-50YE2 Brushless Die Grinder with Drill Chuck is more than just a rotary tool—it is a complete precision solution. By combining brushless motor efficiency, drill chuck versatility, generator compatibility, and advanced safety features, it delivers a level of performance and reliability that traditional die grinders cannot match.
Whether you are a mold maker, automotive technician, fabricator, or maintenance professional, this tool empowers you to work faster, longer, and with greater precision—wherever the job takes you.