Pneumatic Jack Hammer YT28

1. About us: Founded in June 2005 in Chongqing, China, YAMAMOTO Chongqing Rock Drilling Machine Co. Ltd. has introduced advanced drilling machine technologies from Japan and smelting technologies and machining processes for its key components. It covers an area of more than 22,000m2, with a construction area of over 14,000m2. The Company mainly engages in research, development, production, and sales of mining machine and components. Its annual yield of air-leg rock drilling machines reaches over 50,000 sets. After a couple of year's elaborate investigation, our products is stable in quality, with technical specifications and performances meeting industrial standard and arriving at the national advanced level, having won the reputation of "national trustworthy product with high quality and excellent service". The products were regarded as a new & high-tech products as well as key new products in Chongqing in 2009, and won the promotion prize for promotional intellectual property rights in the same year. Currently, products of the Company have been sold well nationwide, and are widely applied in mining, drilling and blasting holes. They are also necessary equipment in melting, rail way, road, irrigation works and defense construction, having been recognized widely by the customers. 2. About product: The product is a new upgraded rock drilling machine that has integrated advanced drilling technologies from Japan and investigated nearly three years. Its manufacturing technology and processing method are directly participated in and instructed by Japanese experts. The key components and easily worn materials are strictly selected according to the Japanese standard, so as to ensure high-quality raw materials. It is widely used, especially in lower hard and middle hard rocks. The blasting hole diameter is between 34-42mm, with effective depth up to 5 meters. Compared with other similar drilling machines, it is an ideal product with longer service life, faster drilling speed and less air consumption. 3.Technical specification: Main part YT28Work air pressureMPa0.400.500.63Air consumptionL/S≤47≤55≤65Rock drilling frequencyHz≥33≥36≥39Rock drilling hole speedmm/min≥350≥360≥380voicedB(A)≤125≤126≤127Impact energyJ≥48≥60≥75weightkg≈28lengthmm661Cylinder diamm80Piston strokemm60Air pipe entraining inner diamm25Water pipe entraining inner diamm13Bit shank cover dimensionmm22X108±1Drill bit head diammΦ34 42FT160BC air leg (long) weightkg≈16.9Cylinder diamm65lengthmm1800Air leg push strokemm1365FT160BD air leg (short)weightkg≈14.4Cylinder diamm65lengthmm1400Air leg push strokemm965FY200B greaserCapacityml200 4. Our advantage: 1). save energy and high efficiency 2). strong impact energy 3). low vibration 4). easy handling 5). low noise 6). wet drilling 7). easy cleaning air /water holes 8). spare parts easily purchasing