Kaishan KD50S Heavy Crawler Surface DTH Drilling Rig (105–203 mm)

• Shock-Buffered Dual-Speed Rotary Power: The imported dual hydraulic motors deliver ≥3,200 N·m torque with seamless dual-speed switching (0–65 / 0–130 rpm) to match hole diameters from 105 mm up to 203 mm, while an integrated buffer dampens recoil to extend rotation head lifespan.
• Forward Center of Gravity & Anti-Derailment Undercarriage: Structural engineering integrates the main chassis beam and frame shaft, moving the center of gravity forward to absorb heavy 6-inch DTH hammer impact. Five track rollers and anti-disengagement plates ensure stable, slip-free mobility across ≤30° incline slopes.
• Expanded Multi-Angle Boom with 1,200 mm Compensation: The reinforced articulated boom structure supports vertical, multi-angle fan-shaped, and high/low horizontal drilling, providing a 1,200 mm compensation stroke to ground the guide beam securely on irregular bench topography.

Q: What are the primary performance advantages of the KD50S compared to the KD45S?

A: The KD50S upgrades maximum borehole diameter up to 203 mm (compatible with 3"–6" hammers vs. 4" on KD45S), increases machine operating weight to 6,900 kg, features a 73.5 kW (100 HP) Yuchai DKC2G3 engine, utilizes 24B heavy roller chain with 3,800 mm feed stroke, extends beam compensation to 1,200 mm, and incorporates an integral chassis with a forward center of gravity and 5-roller anti-derailment tracks.

Q: What external air compressor capacity is required to operate the KD50S?

A: The KD50S requires an external air supply volume of 15–26 m³/min. We recommend pairing it with Kaishan medium- to high-pressure portable diesel screw air compressors (such as 18–25 bar models), depending on your target hole diameter (105–203 mm) and air hose length.

Q: How does the dual-speed rotary motor benefit drilling operations?

A: The dual-speed switching valve allows the operator to select 0–65 rpm for maximum torque (≥3,200 N·m) when driving large 6-inch hammers in hard rock, or switch to 0–130 rpm for rapid penetration in smaller boreholes and softer formations, maximizing productivity while reducing tool wear.