RHJC is a premier ISO9001, ISO14001, CE, and RoHS certified micromotor manufacturer operating from a 4,000+ sqm state-of-the-art facility. We specialize in engineering high-speed, low-vibration electric micromotor systems for global distributors, OEM brand owners, and industrial workshops across dental laboratory, precision jewelry finishing, and professional nail care industries.
By manufacturing core internal components in-house, RHJC delivers South Korean-level precision, superior heat dissipation, and long service life at direct factory wholesale value. Our full-line supply catalog spans high-efficiency brushless systems (up to 60,000 RPM, 9.2 N.cm torque), portable rechargeable units with 15+ hour battery life, and upgraded carbon brush workhorses with LCD digital displays (including the Renhe 505D, 119, and 315 series). We support low MOQs, flexible OEM/ODM customization, mixed-batch ordering, and full spare-parts availability.
Note: The table below outlines our core brushless, portable, and brushed product series. Please browse the product list above and click on any product card to view full details, or contact our team to request our complete product catalog and B2B price sheet.
| Series / Model | Max. Speed | Motor Type | Power / Torque | Power Source | Primary B2B Application & Feature |
| PRIME SENSE A9 (New) | 55,000 RPM | Brushless | 240W / 8.5 N.cm | AC Desktop | Wireless Bluetooth pedal & low-speed high torque starting at 500 RPM |
| Prime 926 | 60,000 RPM | Brushless | 250W / 9.2 N.cm | AC Desktop | Heavy-duty zirconia cutting & gold/silver alloy polishing |
| Prime SENSE A6 55K | 55,000 RPM | Brushless | 230W / 8.0 N.cm | AC Desktop | 3-speed adjustment mode for precision micro-engraving & carving |
| PRIME 1210N | 35,000 RPM | Brushless | High-Torque | 2600mAh Battery | Portable unit with 15+ hour operation & 3-hour fast charge for mobile work |
| Renhe 505D-45K | 45,000 RPM | Carbon Brush | 90W / 4.2 N.cm | AC Desktop | LCD speed display, ceramic bearings (1.5x lifespan) & heavy-duty handle |
| Renhe 505D-38K | 38,000 RPM | Carbon Brush | 80W / 3.2 N.cm | AC Desktop | Large LCD screen, self-diagnosis display & ceramic bearing precision |
| Renhe 119 / 315 | 35,000 RPM | Carbon Brush | 65W / 3.0 N.cm | AC Desktop | Classic, cost-effective entry-level unit for multi-workstation setup |
Q1: How do portable rechargeable models like the PRIME 1210N compare to AC desktop brushless systems for continuous daily operation?
A: Desktop brushless units (like the Prime 926 and SENSE A9) offer higher power outputs (up to 250W) for continuous heavy-duty industrial cutting and grinding. Portable models like the PRIME 1210N utilize high-efficiency brushless motors with 15+ hours of battery run time, making them ideal for mobile salons, flexible workstations, or on-site processing where portability is essential.
Q2: What options do you provide for OEM/ODM private labeling and custom brand manufacturing?
A: As a direct source factory with independent R&D and 100% in-house component production, we support tailored OEM/ODM solutions. We offer custom housing colors, private logo printing, specialized RPM tuning, and custom packaging designed to build your exclusive brand line.
Q3: How does RHJC ensure product quality and long-term spare parts supply?
A: Every unit undergoes 100% multi-stage aging and torque stability testing before shipment. All products are backed by a 1-year factory warranty, and we maintain a complete, ready-to-ship inventory of exact-match replacement parts (bearings, ceramic components, carbon brushes, and control boards) for international after-sales support.
Contact the RHJC sales team today to request a custom wholesale quote, request an OEM sample, or download our complete product catalog.
