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100 1/4' Inch Chrome Steel Bearing Balls G25

5.0 (10) Write Review
Free shipping on orders over $29.99

$6.79

$ 2 .99 $2.99

In Stock

About this item

  • Pack of 100 1/4" (.25 Inch) Bearing Balls
  • Finest Quality AISI 52100 Chrome Steel
  • High Precision Grade G25


Product Description

1/4” chrome bearing balls G25 (Grade 25) are precision-engineered components made from hardened chrome steel, known for their strength, durability, and resistance to wear. These smaller-diameter balls are versatile and widely used in a variety of applications requiring high precision and excellent load-bearing properties.

Here are some typical uses:

1. Bearings and Mechanical Systems

  • Ball Bearings: Used in roller and ball bearing assemblies to reduce friction and enable smooth rotation in machinery, bicycles, and industrial equipment.
  • Linear Motion Systems: Employed in linear guides and motion systems for precision movement.

2. Automotive and Transportation

  • Steering and Suspension Systems: Serve as components in automotive ball joints and linkages for smooth operation.
  • Gearboxes and Transmissions: Used in automotive and industrial gear mechanisms to handle loads and minimize wear.

3. Recreational and Sporting Equipment

Bicycles: Found in wheel hubs, headsets, and bottom brackets for efficient rotation and longevity.

  • Skateboards and Roller Skates: Essential in the bearing assemblies for smooth movement.

4. Industrial and Manufacturing Applications

  • Valves and Pumps: Used in high-pressure valves, seals, and pump mechanisms due to their durability and resistance to deformation.
  • Precision Machinery: Ideal for machines requiring high levels of accuracy, such as CNC machines and assembly equipment.

5. DIY and Hobby Projects

  • Slingshots: Popular among enthusiasts for use as ammunition due to their uniform size and weight.
  • Prototyping: Employed in experimental setups and models requiring precision spherical components.

6. Scientific and Lab Equipment

  • Test Equipment: Used in applications requiring precise calibration and minimal wear over time.

Key Features:

  • G25 Tolerance: Ensures tight dimensional precision, typically with a diameter tolerance of ±0.00005 inches.
  • Hardness: High Rockwell hardness (HRC ~60) for excellent durability.
  • Corrosion Resistance: Chrome steel offers good resistance to rust and environmental degradation.

These versatile 1/4” chrome bearing balls are essential in applications where precision, strength, and durability are critical, particularly in small-scale or high-accuracy environments.


bluhog
Reviewed in the United States on February 10, 2025
Plastic bag, 100 balls, rebuild your own bearings at home. How fun is that? Probably works well with a slingshot too.
R. S. P.
Reviewed in the United States on June 29, 2024
They work perfectly for putting in bottles to help shake up what is inside.
Travis Bieber
Reviewed in the United States on December 20, 2024
Worked great for rebuilding the front hub of an older bike. Any cup and cone style.
The Bruce
Reviewed in the United States on September 13, 2023
I bought these to rebuild my vintage Shimano HB-1050 rear hub. Mirror polished these 1/4 versions are accurate. My wheel spins easily and freely by hand now.
kratebiker
Reviewed in the United States on August 14, 2023
These bearings appear to be well-made with consistent size. I use them for overhauing hubs on bicycle wheels. I cycle quite a bit and own several bicycles, so buying quality bearings in bulk for a good price is king.
Felix
Reviewed in the United States on June 18, 2023
bought these bearings after discovering that two parts of my bicycle use this size (and the balls in one of them weren't that shiny), but i'd postponed getting this bicycle into service so many times, i didn't wait for them to arrive. so this review is based on cursory inspection.i assume these are dimensionally accurate, because i don't have a way of measuring anything that precisely. on the other hand, i can count and see that i got an extra one. so if drop one and it rolls under something heavy, i can let it make a home there :-)four stars instead of five so this review appears alongside the one complaining about getting 98 instead of 100. i doubt this packaging issue reflects a neglect of quality control, but it's an issue.
Ektarama
Reviewed in the United States on June 16, 2022
It's pretty hard to know if a ball bearing is good until it fails but the two bicycle bottom brackets I overhauled with these adjusted easily and are nice and smooth after 100+ miles so I think they are probably fine. Precision ball bearings are one of the earlier (and crucial) inventions of the mechanical era and are a mature technology, so I'm confident these will be up to the task.Unlike some reviewers I know the difference between chrome steel and chrome plating so use grease, not water, for lubrication and definitely don't drop them in your paint!
TJ
Reviewed in Canada on May 12, 2022
These aren't 1/4". They are exactly 0.218 inch, or 7/32.
ukiewolf
Reviewed in Canada on June 6, 2019
too small … had to return for larger size
Jonathan B.
Reviewed in the United States on October 9, 2015
I needed these for rebuilding the bottom brackets of several vintage British bicycles I'm restoring. I can measure to 1/10,000" with my best micrometer. These measured to be very consistent - consistent beyond my ability to measure.The bottom brackets on the bikes now operate as smooth as new (smoother than many of my modern bikes).Considering the price and the quality - this is a great deal.