Auto-Leveling Telescoping Mast Well Drilling Rig 400m 9500N.m Torque 12.5T JKS400SH

The JKS400SH auto-leveling telescoping mast well drilling rig combines the reach of a 400m-class rig with the maneuverability demanded by urban and industrial job sites. Its four hydraulic support legs, each with a 1650mm stroke, level the machine automatically on uneven ground in under five minutes, eliminating cribbing and crane support. The telescoping mast extends to working height while keeping transport dimensions compact, and the 9500N.m rotary head powers through cemented gravel and weathered rock that stalls lighter machines. With a 12.5T operating weight and 20T lifting force, the JKS400SH delivers big-rig capability in a package that fits inside standard site gates and road corridors.

• Auto-leveling system: 1650mm hydraulic leg stroke levels the rig on slopes and soft ground quickly, improving mast stability and hole straightness.
• 9500N.m rotary torque: high-torque rotation drives bits through cemented layers, cobbles and weathered rock without stalling.
• Telescoping mast: hydraulic mast extension reduces transport height to 2700mm for city streets and low bridges.
• Two-stage feed: 4000mm plus 3000mm feed sections give long, smooth strokes for efficient drilling in deep holes.
• ±8.5T axial control: balanced feed and pullback forces keep bit weight steady and protect the drill string in broken ground.
• Quiet operation: hydraulic-driven design keeps noise low, an important advantage in residential and commercial districts.

The JKS400SH is built for urban water supply wells, industrial plant boreholes, building foundation dewatering, road median wells and geothermal heating loops where space is tight and setup speed matters. The auto-leveling legs and compact mast make it a frequent choice for contractors working inside city compounds, factory yards and residential developments with strict safety and noise requirements.

The JKS400SH ships with reinforced steel frame packing, full waterproof wrapping and protective caps on all hydraulic ports. Prior to dispatch each unit passes mast extension tests, leg leveling tests and a complete hydraulic circuit pressure check. We include a one-year warranty, operator manuals, maintenance schedules and spare parts kit, with remote commissioning support available in multiple languages.