0.309" Loose Tungsten Carbide GR25 Ball +/-.0005 inch

Single 0.309-inch Tungsten Carbide Ball, precision ±0.0005
✔️ 0.309 in (7.848 mm) tungsten carbide loose ball, single

This is a loose tungsten carbide ball bearing used in precision motion assemblies and measurement devices. It’s ideal for high-load, low-friction motion in sealed bearings, linear guides, and micro-scale setups.

✅ Size: 0.309 in (7.848 mm) diameter
✅ Material: tungsten carbide with high hardness
✅ Type: loose ball, single ball
✅ Hardness: ~90 HRc
✅ Tolerance: ±0.0005 in
✅ Pack: One loose ball

💡 What is a tungsten carbide ball used for in precision motion systems?
In short, it's a durable, high-hardness component that reduces wear in small bearings.
- High hardness supports accurate, low-friction motion in sealed bearings
- Handy in linear slide units and micro-positioning fixtures
- Excellent corrosion resistance under challenging conditions