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dBm22h Diamond Core Drill Motor / Machine with 2200W Power. 2200W High Power: Input power 2200W with output 1500W for efficient drilling. 3-Speed Gearbox: Oil bath gearbox with 580/1400/2800 RPM speeds. Customizable Design: Supports OEM/ODM and customization from samples or designs. Safety Features: Includes PRCD safety, soft start, and overload protection. Durable Construction: Magnesium alloy shell with antivibration handles. Wide Application: Max drilling diameter 250mm for concrete and stone. Flexible Operation: Suitable for rig-mounted or free-hand wet/dry drilling. Professional Support: 24-hour response and factory inspection welcome.