Helpdesk
Technical data & buying support
Material comparison, manufacturing process overview, and enquiry forms for new or experienced ball buyers.
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Material comparison
DSP manufactures precision grade balls across high carbon chrome steel, stainless steel grades, tungsten carbide, ceramics and specialty alloys.
| Material | Best for | Strengths | Notes |
|---|---|---|---|
| Chrome Steel (AISI 52100) | Bearings, Automotive, High Load | High wear resistance, Rockwell HRC 60-66 | Standard for ball bearings, pumps and precision machinery. |
| Stainless Steel 420/440C | Valves, Medical, Marine, Food | Martensitic stainless, high hardness with corrosion resistance | Hardened to HRC 52-58. Ideal for valves, bearings, pumps in wet environments. |
| Stainless Steel 304/316 | Chemical, Pharma, Food, Extreme Corrosion | Austenitic non-magnetic, superior chemical resistance | Tough and highly resistant to acids, salts and food substances. |
| Tungsten Carbide | Flowmeters, Linear Bearings, Gauging, Valves | Extreme hardness (HRA 90+), high density, wear resistance | Best for extreme abrasive or high-pressure environments. |
| Ceramic (Si3N4 / ZrO2) | High Speed Spindles, Aerospace, Non-conductive | 40% lighter than steel, electrically insulating, zero corrosion | Operates at speeds up to 3x higher than steel balls. |
| Brass & Copper | Electrical contacts, artistic, low friction valves | Non-sparking, excellent electrical & thermal conductivity | Widely used in safety equipment and fluid handling. |
Manufacturing process
Typical precision ball process flow used across DSP product lines.
01
Heading & Forming
High precision wire cut and cold heading into near-net spherical blanks.
02
Flashing / Rough Grinding
Removing flashing ring and uniform spherical pre-grinding.
03
Heat Treatment
Atmosphere controlled hardening and tempering to achieve specified HRC/Rockwell hardness.
04
Hard Grinding
High precision dimensional grinding to sub-micron accuracy tolerances.
05
Lapping & Polishing
Final fine abrasive lapping achieving mirror surface finish (Ra < 0.012 µm).
06
100% Inspection & Packing
Automated optical inspection, diameter grading, anti-rust oiling and sealed packaging.
Ceramics vs steels — property snapshot
High-level comparison to help shortlist ceramic or steel options.
| Property | Silicon Nitride (Si3N4) | Zirconia (ZrO2) | Chrome Steel 52100 |
|---|---|---|---|
| Density (g/cm³) | 3.2 | 6.0 | 7.8 |
| Hardness (HV / HRC) | 1500 HV (75 HRC) | 1200 HV (70 HRC) | 800 HV (64 HRC) |
| Max Operating Temp (°C) | 1000°C | 500°C | 150°C |
| Electrical Insulation | Yes (Dielectric) | Yes | No (Conductor) |
| Corrosion Resistance | Exceptional | Very High | Requires Oil/Rust Protection |
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Raise a technical enquiry
Choose the form that matches you. Submissions open your email client addressed to sales@dspballs.in with the filled details.