Q: What makes chrome ball have better performance than ordinary carbon steel?

Answer: Chromium ball contains a higher proportion of key alloy metals, including chromium, silicon and manganese. Chromium helps to improve the toughness and resistance to wear, corrosion and discoloration; Both silicon and manganese increase strength.

Q: Where are precision miniature ball bearings used?

Answer: Precision miniature ball refers to the ball with diameter less than 1/8 inch (3 mm). Precision miniature balls are commonly used in medical, dental and optical instruments, miniature bearings, ball screws and pumps. Material options include chrome steel, stainless steel, tungsten carbide, plastic and glass.

Q: What is the best choice for stainless steel bearing balls?

A: Our page about stainless steel bearing balls can help you make a decision.

Q: What are some good criteria for determining whether a ball or roller is most suitable for a given rolling motion application?

A: There are several factors to consider - the following is the comparison between the ball and roller on this basis:

cost

The cost of ball bearings is usually lower than that of roller bearings of the same size.

load

The roller supports more load than the ball. The roller provides the theoretical contact line, while the ball provides the theoretical contact point.

Load type

The ball can provide radial and axial load carrying capacity. Cylindrical rollers are specially designed to bear radial loads (although there are other types of rollers that can bear both axial and radial loads).

speed

Ball bearings are usually used for applications with maximum speed.

space

In some applications with very limited space, it may be easier to design the ball as a rolling element.

Q: What are the main differences between 300 series and 400 series stainless steel balls?

A: The 300 series "austenitic" stainless steel ball contains chromium and nickel, and has no magnetism. They have better corrosion resistance than the 400 series (in fact, they have the highest corrosion resistance in the stainless steel group). They are not too brittle and can be hardened by cold work. 400 series stainless steel ball is "pure chrome". It contains more carbon to make it magnetic and provides less corrosion protection than 300 series. "Martensite" can be easily heat treated to increase hardness and make it more brittle. The martensite grade is specified for applications requiring strength, hardness and wear resistance.

Q: What ball manufacturing standards does Hartford comply with?

A: Hartford products meet these main standard industrial specifications for precision balls:

·ANSI/AFBMA standard 10 metal ball

·ISO 3290 Rolling bearings - Balls - Dimensions and tolerances

·DIN 5401 Finished steel balls for rolling bearings

· ASTM F 2215

· ASTM F2215

· ASTM F2215-08

· ASTM F 2215-08