How the S5025 CNC Centerless Grinder Processes Carbide Studs

Recently, a client from Uzbekistan contacted Shanghai ANTISHICNC regarding the purchase of a production line for cemented carbide studs used in high-pressure grinding rolls. The specifications for the workpieces are as follows:

Material: Cemented carbide (WC-Co)

Diameter: Φ16 – Φ25 mm (primary specification: Φ21.9 mm)

Length/Height: 25 – 60 mm (primary specification: 40 mm)

Precision requirements: Surface roughness Ra ≤ 0.8 µm (or better, e.g., Ra 0.32); high roundness (0.002 mm).

Based on an analysis of the customer’s machining specifications and blueprints, the material to be processed is cemented carbide. Since standard grinding wheels cannot meet the requirements, diamond grinding wheels are necessary, and the process demands a high-precision CNC machine. Consequently, we recommended the S5025 high-precision CNC centerless grinder to the customer.

Based on an analysis of the customer’s machining drawings, the primary machining diameters are under 160mm (and less than 200mm), and the material is ultra-hard PCD (polycrystalline diamond)—primarily for milling cutters. We recommended our TG160 CNC laser tool grinding machine, which fully meets the customer’s processing requirements.

The workpieces the customer needs to process (data has been blurred).

This high-precision CNC centerless grinder with a wide grinding wheel supports both through-feed and in-feed grinding modes. It is suitable for processing a wide range of components, including slender smooth shafts, pins, needle rollers, rollers, piston rods, motor shafts, stainless steel bars, carbide rods, short shafts, flanged shafts, bearing rings, piston pins, and short sleeves.

Key advantages include:

1. The machine bed is cast as a single unit from high-quality gray iron. It undergoes natural aging and multiple tempering treatments to eliminate internal stress and ensure a stable internal structure, offering excellent resistance to deformation, high rigidity, and wear resistance. The combination of finite element structural design and premium materials significantly minimizes deformation during operation.
2. The grinding wheel has an outer diameter of 500mm, delivering strong cutting capability; a high-rigidity cantilever support structure facilitates easy wheel replacement and maintenance. The regulating wheel features an optimized dual-support structure for enhanced rigidity, reducing the time required for wheel replacement to just one-quarter of the previous duration.
3. The grinding wheel and regulating wheel spindles are supported primarily by high-rigidity NN-series rolling bearings. This configuration ensures high rigidity while delivering high rotational accuracy, low wear, and a long service life, enabling maintenance-free operation. The main feed for the regulating wheel carriage’s lower slide utilizes a servo-driven ball screw mechanism; combined with high-rigidity guideways and a high-resolution servo motor, it achieves micro-feeding capabilities. The minimum feed increment is as fine as 0.0001mm, meeting stringent grinding requirements.
4. This high-precision machine achieves roundness of 0.0005mm, cylindricity of 0.0015mm, and surface roughness of Ra 0.16μm, making it ideal for processing various precision components.

The following are the specific technical specifications for the S5025 CNC centerless grinder.

If you are also in need of a CNC centerless grinder, please feel free to contact Shanghai ANTISHICNC at any time. Our professional engineers are available to provide you with expert technical support.

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