Can I use ZZ (steel seal) ball bearing instead of RS (rubber seal)?

Asked by: Dave Halo

Can I use a ZZ (steel seal) ball bearing instead of an RS (rubber seal)? Yes, but it won’t be water tight, or keep out small particles of dirt or dust. You might have to lubricate them more often, as there are no actual seals to keep oil/grease in there.

What is the difference between ZZ and RS bearings?

Re: Bearings types difference



The 2RS are sealed for life bearings i.e. the grease within the bearing cannot get out or contaminants get into the bearing and damage it. The ZZ are just a metal shield to stop larger contaminants damaging the bearing.

What is ZZ in bearing?

Steel shield



HRB Bearings with steel shields are termed as ZZ as suffix after their designated number. Example 6200 HRB bearing is open type HRB bearing, where as 6200-ZZ HRB bearing is shielded and 6200-Z is one side shielded, one side open HRB bearing.

What are the two types of seals used on bearings?

The types of seals most commonly used with rolling (ball and roller) bearings are contact or lip seals; non-contact seals; and, to a lesser degree, various types of bearing isolators that combine the functions of contact and non-contact seals in different ways.

Which is better ball bearing or sealed bearing?

We use sealed so the bearings are protected from road debris and weather, so they spin cleaner and with less friction for longer. Sealed bearings perform as well or better than loose bearings, without the maintenance.

What are 6203 ZZ ball bearing used for?

The 6203 is a 17 mm Ball Bearing that can be used in many rotary and factory automation applications. The 6203 Deep Groove Ball Bearings is an open style bearing. The 6203Z ball bearing is a single row raceway and single shielded. The 6203ZZ ball bearing has a single row raceway and it is shielded on each side.

Is Llu the same as 2RS?

Nope, 2rs is standard rubber seals. LLB is two light contact lips in a groove, LLU is two firm contact lips in a groove. SRS is a snap ring on top of the seal.

Do ZZ bearings need to be greased?

For operating temperature of around 70C, 6213ZZ bearing has to be ordered filled in with high temperature grease which can be done by adding postfix GJN with bearing type so the recommended ordering part number is 6213-2Z/C3GJN (base oil mineral / thickener: polyurea soap).

Are rubber sealed bearings better?

Metal has less resistance but lets more dirt in. Rubber seals better, so protects better against dirt, but rubs a little more. So depends on where you drive and where you use the bearing. There are also some hybrid bearings from Avid with one side metal one side rubber for putting in the rear hubs and front knuckles.

What is the difference between 2rs and 2RZ bearings?

2RZ bearings are like 2Z bearings, but also have two low-friction seals.

Do sealed bearings need grease?

Because sealed bearings do not require lubrication, they tend to be more closed off, offering no route for contaminants to enter in the first place. A failure in the seal may result in the failure of the bearing.

Do sealed bearings keep water out?

Traditionally seals for ball bearings are contact types made of rubber, usually with a metal backing. On smaller bearing sizes the seal is often made of glass reinforced Teflon and is fitted using a snap ring. Both types are very effective at keeping out water, liquids and fine particles.

Are rubber sealed bearings waterproof?

The rubber seal extends to the outer circumference the shielded plate for better sealing performance, and prevents contamination of the bearing by dust or foul water. Provides excellent dustproofing and waterproofing, thus protecting against contamination by dust or foul water.

What is the difference between 6203 and 6203 2RS?

The 6203-2RS ball bearing has two contact rubber seals, one on each side of the ball bearing. The 6203-ZZ bearing has two non-contact metal shields, one on each side of the ball bearing. If your application requires a 6203 ball bearing with only one seal or shield you can simply remove one of the shields or seals.

What is a 6203 2RS bearing?

Deep groove ball bearing with seals. Single row deep groove ball bearings with seals on one or both sides are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds.

What size is a 6203 bearing?

Dimensions

What are C3 bearings used for?

C3 is designed for hot running environments; engines etc. where the bearing temp could reach 100deg or more. C4 more extreme temperature applications and higher speed environments. C5 the highest clearance bearing available, are extremely loose to start and can knock until at operating speeds and temperature.

What is C3 clearance on a bearing?

Internal clearance being C3 means that the bearing has room for expansion if needed between the races of the bearing, whilst holding the outer ring and moving the inner ring in a radial movement you will detect a little amount of play between the two rings.

What are the 3 rules of bearings?

There are 3 rules to follow when measuring a bearing: Always measure the angle in a clockwise direction. Always measure the angle from north. Always give a 3-figure bearing (E.g. 030° instead of 30°)

What is the difference between 2Z and C3 bearings?

The 2Z suffix indicates that the bearing has a steel seal on both sides. The bearings are filled with a high-quality grease and are lubricated for life. The C3 in the product name means that this bearing has a higher (internal) clearance than normal. The C3 clearance is most frequently used for this type of bearings.