JINTAI SD28 Hydraulic Rotary Drilling Rig
Overview
| Category | Bored Piles |
| Mast Structure | Parallelogram Mast Type |
| Max Torgue | 286 kNm |
| Max Diameter | 2,400 mm |
| Max Depth | 70 m |
| Weight | 89 ton |
Description
The SD28 is a self erecting, 75 ton drilling rig particularly suitable for drilling great diameters using the kelly bar system and with casing tubes directly with the rotary.
Technical Specification
Rotary
| Torque | 286 kNm | 210,943 ft. lbs |
| Crowd Cylinder Push – Pull Force | 250 – 250 kN | 56,202 – 56,202 lbf |
| Crowd Cylinder Stroke | 5,700 mm | 19 ft |
| Crowd Winch Push – Pull Force | 250 – 250 kN | 56,202 – 56,202 lbf |
| Crowd Winch Stroke | 10,000 mm | 33 ft |
| Maximum Speed of Rotation | 30 rpm | 30 rpm |
Winch System
| Main Winch – Line Pull | 250 kN | 56,202 lbf |
| Main Winch – Rope Diameter | 30 mm | 1.18 in |
| Auxiliary Winch – Line Pull | 75 kN | 16,861 lbf |
| Auxiliary Winch – Rope Diameter | 18 mm | 0.71 in |
Engine
| Brand | CUMMINS | |
| Model | QSM11-C | |
| Engine Output | 263 kW @ 1,900 rpm | 353 hp @ 1,900 rpm |
Hydraulic System
| Hydraulic Pressure | 330 bar | 4,786 psi |
Expandable Crawlers
| Length | 5680 mm | 19 ft |
| Width | 3300/4400 mm | 10.82/14.43 ft |
| Shoe Width | 800 mm | 2.625 ft |
Weight & Height
| Mast Height | 23.5 m | 77 ft |
| Self Weight (Without drilling tools) | 74 ton | 163,142 lbs |
| Operating Weight | 89 ton | 196,211 lbs |