{"id":2544,"date":"2025-08-01T03:03:29","date_gmt":"2025-08-01T03:03:29","guid":{"rendered":"https:\/\/kaishan-compressor.com\/?post_type=product&#038;p=2544"},"modified":"2025-08-01T03:40:51","modified_gmt":"2025-08-01T03:40:51","slug":"kaishan-kj421-double-boom-tunnel-jumbo-underground-tunnel-boring-drilling-rig-machine","status":"publish","type":"product","link":"https:\/\/kaishan-compressor.com\/product\/kaishan-kj421-double-boom-tunnel-jumbo-underground-tunnel-boring-drilling-rig-machine\/","title":{"rendered":"Kalshang KJ421 Double Boom Tunnel Jumbo Underground Tunnel Boring Drilling Rig Machine"},"content":{"rendered":"<p>Kalshang KJ421 Double Boom Tunnel Jumbo Underground Tunnel Boring Drilling Rig Machine<\/p>\n<p>KJ421 Underground Mining Drill Rigs and Tunneling Jumbo to tunneling operation at the section of 16-68m2 in hard-rock mine. Its firm and reliable universal big boom has the best shape of section coverage, boosting the 360\u00b0 overturn and automatic leveling of the beam for rapid and convenient borehole positioning. The big boom can also be used for lateral cross hole opening and anchor rod boring operations.<br \/>\nThe arrangement of the jumbo ensures the good view of the operator. powerful 4-wheel drive hinge chassis ensures flexible, quick and safe driving in a narrow roadway.<br \/>\nThe high-frequency percussion rock driller uses the cascaded piston to optimize the efficiency of shock wave transmission, raise the drilling speed, reduce clamping bit consumption and enhance the soundness of device.<br \/>\nThe big space of operation and a series of automatic functions can help the driver to concentrate their attention to safe, rapid and accurate tunneling.<br \/>\nAll its repair and maintenance parts have been protected well, and its repair and maintenance are easy.<\/p>\n<p>&nbsp;<\/p>\n<table>\n<tbody>\n<tr>\n<td colspan=\"2\" width=\"750\"><strong><b>Technical Parameters of KJ421 Underground Mining Drill Rigs and Tunneling Jumbo<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\" width=\"750\"><strong><b>Dimensions and Weight<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td>Length<\/td>\n<td width=\"443\">13000mm<\/td>\n<\/tr>\n<tr>\n<td>Width<\/td>\n<td width=\"443\">2200mm<\/td>\n<\/tr>\n<tr>\n<td>Height<\/td>\n<td width=\"443\">2400\/3100 mm<\/td>\n<\/tr>\n<tr>\n<td>Weight<\/td>\n<td width=\"443\">22000 kg<\/td>\n<\/tr>\n<tr>\n<td>Travelling speed, level<\/td>\n<td width=\"443\">10 km\/h<\/td>\n<\/tr>\n<tr>\n<td>Climbing capacity<\/td>\n<td width=\"443\">14\u00b0<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\" width=\"750\"><strong><b>Safe protection<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td>Noise level<\/td>\n<td width=\"443\">&lt;100 dB(A)<\/td>\n<\/tr>\n<tr>\n<td>Lifting safety ceiling<\/td>\n<td width=\"443\">Meet the requirements of FOPS and ROPS.<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\" width=\"750\"><strong><b>Drilling system<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td>Rock drilling<\/td>\n<td width=\"443\">2\u00d7HC95LM<\/td>\n<\/tr>\n<tr>\n<td>Impact power<\/td>\n<td width=\"443\">21KW<\/td>\n<\/tr>\n<tr>\n<td>Impact flow<\/td>\n<td width=\"443\">100-120L\/min<\/td>\n<\/tr>\n<tr>\n<td>Impact pressure<\/td>\n<td width=\"443\">180-200bar<\/td>\n<\/tr>\n<tr>\n<td>Torque<\/td>\n<td width=\"443\">764Nm<\/td>\n<\/tr>\n<tr>\n<td>Beam ratation<\/td>\n<td width=\"443\">360\u00b0<\/td>\n<\/tr>\n<tr>\n<td>Feed extension<\/td>\n<td width=\"443\">1600mm<\/td>\n<\/tr>\n<tr>\n<td>Model of boom<\/td>\n<td width=\"443\">K 40<\/td>\n<\/tr>\n<tr>\n<td>Form of boom<\/td>\n<td width=\"443\">Automatic leveling<\/td>\n<\/tr>\n<tr>\n<td>Extension of drill boom<\/td>\n<td width=\"443\">1800mm<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\" width=\"750\"><strong><b>Electric Hydraulic pump station<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td>Electric motor<\/td>\n<td width=\"443\">2\u00d775kw<\/td>\n<\/tr>\n<tr>\n<td>Impact- propelling-Boom<\/td>\n<td width=\"443\">Variable axial piston pump<\/td>\n<\/tr>\n<tr>\n<td>Turn around<\/td>\n<td width=\"443\">Gear pumps<\/td>\n<\/tr>\n<tr>\n<td>Filter precision<\/td>\n<td width=\"443\">10\u03bc<\/td>\n<\/tr>\n<tr>\n<td>Hydraulic oil tank<\/td>\n<td width=\"443\">400L<\/td>\n<\/tr>\n<tr>\n<td>Hydraulic cooler<\/td>\n<td width=\"443\">Water cooler<\/td>\n<\/tr>\n<tr>\n<td>Working pressure<\/td>\n<td width=\"443\">380V<\/td>\n<\/tr>\n<tr>\n<td>Frequency<\/td>\n<td width=\"443\">50Hz<\/td>\n<\/tr>\n<tr>\n<td>Starting method<\/td>\n<td width=\"443\">Star &#8211; triangle<\/td>\n<\/tr>\n<tr>\n<td>Cable reel<\/td>\n<td width=\"443\">1\u00d7CRC1016<\/td>\n<\/tr>\n<tr>\n<td>Cable capacity of the reel<\/td>\n<td width=\"443\">100m<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\" width=\"750\"><strong><b>Air and water system<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td>Air Equipment<\/td>\n<td width=\"443\">1\u00d7JN11<\/td>\n<\/tr>\n<tr>\n<td>Capacity<\/td>\n<td width=\"443\">1.55m3\/min<\/td>\n<\/tr>\n<tr>\n<td>Pressure<\/td>\n<td width=\"443\">8bar<\/td>\n<\/tr>\n<tr>\n<td>Device of shank lubrication<\/td>\n<td width=\"443\">Electrical pulse lubrication pump<\/td>\n<\/tr>\n<tr>\n<td>Air consumption for lubrication<\/td>\n<td width=\"443\">2\u00d70.3m3\/min<\/td>\n<\/tr>\n<tr>\n<td>Oil consumption for lubrication<\/td>\n<td width=\"443\">2\u00d7180-250g\/h<\/td>\n<\/tr>\n<tr>\n<td>Water Pump<\/td>\n<td width=\"443\">1\u00d7CR15<\/td>\n<\/tr>\n<tr>\n<td>Power<\/td>\n<td width=\"443\">11kw<\/td>\n<\/tr>\n<tr>\n<td>Pump Capacity<\/td>\n<td width=\"443\">12m3\/h<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\" width=\"750\"><strong><b>Chassis<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td>Diesel engine<\/td>\n<td width=\"443\">Cummins QSB3.9-C125 92KW\/2200rpm<\/td>\n<\/tr>\n<tr>\n<td>Exhaust purification<\/td>\n<td width=\"443\">Exhaust catalyst<\/td>\n<\/tr>\n<tr>\n<td>Drive system<\/td>\n<td width=\"443\">Hydraulic torque converter+gearbox<\/td>\n<\/tr>\n<tr>\n<td>Travel brake<\/td>\n<td width=\"443\">Wet bridge brake<\/td>\n<\/tr>\n<tr>\n<td>Parking brake<\/td>\n<td width=\"443\">Mechanical brake<\/td>\n<\/tr>\n<tr>\n<td>Fuel tank<\/td>\n<td width=\"443\">120L<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"wpforms-container \" id=\"wpforms-217\"><form id=\"wpforms-form-217\" class=\"wpforms-validate wpforms-form wpforms-ajax-form\" data-formid=\"217\" method=\"post\" enctype=\"multipart\/form-data\" action=\"\/wp-json\/wp\/v2\/product\/2544\" data-token=\"1192f753eee471a72c17d45a99592a2f\" data-token-time=\"1781114328\"><div class=\"wpforms-head-container\"><div class=\"wpforms-title\">Get A Free Quote Now<\/div><\/div><noscript class=\"wpforms-error-noscript\">Please enable JavaScript in your browser to complete this form.<\/noscript><div class=\"wpforms-field-container\"><div id=\"wpforms-217-field_0-container\" class=\"wpforms-field wpforms-field-name\" data-field-id=\"0\"><label class=\"wpforms-field-label\" for=\"wpforms-217-field_0\">Name <span class=\"wpforms-required-label\">*<\/span><\/label><input type=\"text\" id=\"wpforms-217-field_0\" 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Its firm and reliable universal big boom has the best shape of section coverage, boosting the 360\u00b0 overturn and automatic leveling of the beam &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/kaishan-compressor.com\/product\/kaishan-kj421-double-boom-tunnel-jumbo-underground-tunnel-boring-drilling-rig-machine\/\"> <span class=\"screen-reader-text\">Kalshang KJ421 Double Boom Tunnel Jumbo Underground Tunnel Boring Drilling Rig Machine<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"featured_media":2545,"template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"product_brand":[],"product_cat":[37,53],"product_tag":[],"class_list":["post-2544","product","type-product","status-publish","has-post-thumbnail","product_cat-kaishan-air-compressor","product_cat-tunnel-jumbo-drilling-rigs","first","instock","shipping-taxable","product-type-simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.5 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Kalshang KJ421 Tunnel Jumbo Drill Rig | KJ421 Underground Jumbo<\/title>\n<meta name=\"description\" content=\"Kalshang KJ421 tunnel jumbo is flexible and versatile, ensuringt high productivity and reliability. 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