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.