[Demo machine available for rental] The drilling angle is freely adjustable at 360 degrees! A lightweight and sturdy engine rock drill.
The MM-78 is a portable rock drilling machine that does not require power sources or equipment such as compressors. Since it is a gasoline-powered portable rock drill, no additional equipment is necessary. It is lightweight and durable due to the use of special magnesium alloys and other special alloys. Additionally, the use of a diaphragm-type carburetor increases rotational stability, allowing for a drilling angle that is freely adjustable up to 360 degrees. 【Features】 ■ No need for power sources or equipment such as compressors ■ Gasoline-powered ■ Use of special magnesium alloys and other special alloys ■ Equipped with a diaphragm-type carburetor *For more details, please refer to the PDF document or feel free to contact us.
Inquire About This Product
basic information
【Specifications (Excerpt)】 ■Dimensions (mm): 596×260×240 ■Weight (kg): 15 ■Fuel tank capacity (L): 1.1 ■Fuel mixing ratio: 12 (gasoline): 1 (oil), up to 15:1 ■Drilling angle: 360 degrees ■Ignition method: Flywheel magneto ■Cooling method: Forced air cooling ■Starting method: Recoil starter ■Engine ・Total displacement: 54cc + 21cc = 75cc ・Revolutions: 2800–3200rpm ■Compressor ・Type: Reciprocating piston type ・Discharge volume: 21cc ■Hammer piston dimensions (L) ・Diameter × Stroke: φ65×8–10 ・Impact dimensions: φ25 ■Drill rod rotation (rpm) ・Type: Spline lead groove ・Rotation speed: Approximately 200 ■Drill rod shank dimensions (L): 19×83 (JIS H19TS) ■Bit gauge dimensions: φ26 ■Drilling speed (cm/min): 18 ■Fuel consumption (L/h): 1.3 ■Maximum drilling depth (m): 3 ■Drill rod dimensions: 19 *For more details, please refer to the PDF document or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
For more details, please refer to the PDF document or feel free to contact us.
catalog（1）
Download All Catalogs
Company information
Maruzen Kogyo Co., Ltd. is a company that mainly handles small hydraulic machines and vehicle inspection equipment that are active in small-scale construction projects. About half of our business is in the construction machinery sector, and since our founding, we have refined our production of a wide variety of small quantities. Our products are also well recognized overseas, and we will continue to focus on developing high value-added products while collaborating with our overseas partner companies to accelerate our global business expansion. If you have any inquiries regarding small construction machinery, automotive inspection equipment, or packaging-related devices, please feel free to consult with us.