Precision Machining

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CNC turning produces cylindrical components with ±0.02mm accuracy — from Φ2mm pins to Φ500mm shafts, up to 1000mm in length. We machine stainless steel, carbon steel, alloy steel, aluminum, and...

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Multi-axis CNC Machining

Multi-axis CNC machining handles complex geometries in a single setup — eliminating multiple clampings and the tolerance errors they introduce. We run 3-axis, 4-axis, 5-axis simultaneous, and...

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Thread Machining

Thread machining covers multiple processes for creating internal and external threads — rolling, milling, cutting, and grinding. Each method serves different applications: rolling cold-forms...

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Internal Spline Broaching

Internal spline broaching is a high-precision machining process that uses a multi-tooth tool — the broach — to cut internal spline profiles in a single pass. Each successive tooth removes a...

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Spline and Gear Hobbing

Hobbing is a continuous generating process that uses a helical cutting tool — the hob — to produce splines, spur gears, and helical gears with consistent tooth geometry across production runs....

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Internal and External Cylindrical Grinding

Cylindrical grinding is a finishing process that uses abrasive wheels to refine external (OD) and internal (ID) surfaces of round components — achieving tighter tolerances and better surface...

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Surface Grinding

Surface grinding uses a rotating abrasive wheel to produce flat surfaces with high dimensional accuracy and fine finish — removing oxide layers, correcting distortion, and preparing parts for...

Ningbo Fenghua Bolong Machinery Manufacturing Co., Ltd. is one of the most professional precision machining manufacturers and suppliers in China, also supports high quality customized service. With abundant experience, we warmly welcome you to buy durable precision machining made in China here from our factory.

Flat Surface Grinding, Rotary Broaching, Spur Gear Hobbing