1/4" Precision Steel Balls – Grade 40 | Pack of 2000
Engineered for Accuracy. Built for Reliability. Trusted Across Industries.

🔩 Overview:

The 1/4" Steel Balls – Grade 40 are precision-manufactured components designed to deliver exceptional performance in applications that demand consistent roundness, high strength, and reliable durability. Crafted from hardened high-carbon steel and finished to meet Grade 40 tolerance standards, these steel balls are ideal for industrial, mechanical, and DIY uses that require exacting specifications.

⚙️ Technical Specifications:

ParameterValueDiameter1/4 inch (6.35 mm)GradeG40 (Sphericity tolerance ±13μm)MaterialHardened High-Carbon SteelSurface FinishPolished (Mirror-like)HardnessRockwell HRC 60–66DensityApprox. 7.85 g/cm³Quantity2000 balls per packToleranceISO 3290 / AFBMA Standard Compliance

🛠️ Manufacturing Precision:

These balls are engineered under controlled heat treatment and CNC-grade grinding processes to ensure uniform diameter, roundness, and surface finish. The Grade 40 classification indicates ±13 microns maximum deviation in sphericity, making them suitable for mid-to-high precision machinery.

🧰 Use Case Applications:

Industrial & Mechanical:

• Ball bearings and rolling elements

• Valves, check balls, and flow regulators

• Gearboxes, linear actuators, and pumps

Automotive:

• CV joints, universal joints

• Steering columns and drive shafts

Tooling & Instrumentation:

• Precision instruments

• Measuring devices

• Robotics and motion control systems

DIY & Recreational:

• High-power slingshots (check local regulations)

• Prototyping, mechanical design, and metal crafting

🧪 Material & Durability Benefits:

• Hardness & Load Capacity: With a Rockwell hardness above 60 HRC, these balls can withstand substantial static and dynamic loads without deformation.

• Wear Resistance: Ideal for applications involving repetitive motion or high-pressure contact.

• Polished Finish: Reduces friction and prevents premature wear in high-speed applications.