Engineering Extreme Rigidity for Demanding Manufacturing
Qingluan Precision Machinery Co., Ltd. is an industrial designer and manufacturer of heavy-duty CNC turning centers, slant bed lathes, and vertical machining centers. We build production machinery designed for sub-micron geometric repeat accuracy across continuous 24/7 industrial duty cycles.
Four Cornerstones of Qingluan Machine Accuracy
HT300 Meehanite Cast Iron Bedways
All Qingluan lathe beds and vertical machining center columns are poured with HT300 high-density pearlite Meehanite resin-sand casting. Every casting undergoes high-temperature electric annealing (550°C) followed by secondary natural seasoning to relieve residual crystalline stresses, eliminating geometric warping over 10+ years of operation.
Renishaw XL-80 Laser Interferometry
Prior to shipping, every linear axis is mapped in temperature-controlled test chambers using British Renishaw XL-80 laser measurement systems. Positioning errors, angular pitch, yaw, and thermal backlash are measured and compensated directly in the CNC system controller to achieve positioning repeatability within ±0.003 mm.
Dynamic Spindle Balancing & Run-In
Every BT40/BT50 milling spindle and high-speed turning headstock is assembled in a Class 10,000 dust-free cleanroom using Japanese NSK or German FAG P4-grade angular contact bearings. Spindles undergo continuous 24-hour high-speed thermal stabilization and dynamic balancing down to G0.4 standards.
Rigorous Factory Acceptance Testing (FAT)
Every machine tool completes standard test cutting on 45# steel and aerospace aluminum prior to crating. We record surface roughness Ra < 0.8 μm, run Renishaw QC20-W ballbar circularity checks, and provide overseas buyers with complete test video recordings and inspection certificates.
Seamless Global Delivery to 50+ Countries
With decades of B2B export experience, our dedicated logistics specialists coordinate ocean freight, flat-rack container stowage, and customs clearance documents (Commercial Invoice, Packing List, Certificate of Origin Form E / Form F, Bill of Lading).
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