Model:ZDDR‑400 Bridge Type Automatic Drilling Machine

ZDDR‑400 bridge‑type automatic drilling machine is professional stone core‑drilling & core‑extracting equipment manufactured by Xianda Machinery. It adopts heavy‑duty bridge‑type welded steel structure, front‑rear double‑screw driving system and permanent‑magnet variable‑frequency speed‑regulation main motor. Featuring high drilling precision, low energy consumption, simple operation and outstanding stability. This machine is widely applied to drill holes and take stone cores from granite, marble and other natural stone blocks & slabs.

✅ Heavy‑duty bridge‑type welded steel frame, excellent structural rigidity and stable operation ✅ Front‑rear double‑screw transmission, smooth movement and high processing precision ✅ Permanent‑magnet variable‑frequency speed‑regulation motor, energy‑saving & power‑saving ✅ Max drilling diameter up to Φ400 mm; ample X/Y/Z axis travel for large workpieces ✅ Built‑in drill barrel speed adjustment function, adapt to various stone hardness ✅ Simple operation, low failure rate, suitable for long‑time continuous mass‑production

• Natural stone core‑extracting & core‑drilling for granite, marble
• Round stone sample taking, cylindrical stone blank processing
• Tombstone, monument, decorative stone hole processing
• Stone factory batch core‑drilling work, stone block pre‑processing
• Circular‑shaped stone blanks for baluster, column production

表格

Xianda Machinery has specialized in stone‑processing machinery manufacturing since 1985. ✔ Self‑owned complete production workshop covering machining, assembly and finished‑machine testing ✔ Main machine models obtained CE certification, fully comply with European safety standards ✔ Strict raw‑material inspection & 100 % running test before goods delivery ✔ Complete R&D, sales and after‑sales technical service system ✔ Products are exported to Europe, South America, Middle East, Southeast Asia and other global markets

• Accepted Payment Terms: T/T. 30 % deposit to start production, 70 % balance before shipment.
• Lead Time: 18‑25 working days after receiving deposit.
• Packing: Fumigated solid wooden export case for ocean transportation.
• Freight: Freight cost is NOT included in unit price. We will offer accurate freight quotation according to your destination port.