6305-2Z-SKF - Deep groove ball bearing - 6305 2z bearing
The SKF bearing catalogue lists a large range of designs, variants, and sizes of deep groove ball bearings. They are available capped (with seals or shields) or open, with a variety of greases, and a range of clearances. 2Z ZZ 2RS GJN C3 C4.
Single row ball bearings are incredibly versatile, they can be used for medium-high radial loads and light thrust loads, in either direction. It is possible to have a maximum capacity bearing that contains more rolling elements, this increases the radial load the bearing can carry but reduces its axial load carrying capacity.
The subject of anti-friction bearings is made more difficult due to the varying terminology that is used to describe identical parts. The below table lists bearing components along with additional common colloquial names.
Deep Groove Ball Bearings are the most widely used bearing type and are particularly versatile. They have low friction and are optimized for low noise and low vibration which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than other bearing types.
Ball bearings may be shallow groove or deep groove. The 'groove' is the depth of the raceway into which the balls fit. Deep groove single row ball bearings are also known as Conrad bearings. Deep groove ball bearings can carry higher radial and axial loads than their shallow groove ball bearing counterparts.
Common ball bearing designs include single row, double row, thrust and angular contact. Each design of ball bearing caters for the different loads it is likely to encounter.
Double row ball bearings can carry more radial load than their single row counterparts but are wider. This type of bearing can support heavy radial loads and low-medium axial loads, in either direction.
GET THE MAXIMUM OUT OF YOUR SKF BEARINGS!Selection Guide | Mounting and Dismounting Guide | Maintenance Handbook | Damage and Failure Analysis Handbook
There are two main categories of bearing, plain and anti-friction (rolling). Both bearing designs have found widespread application throughout the engineering world, but no single bearing design can cater for all applications. As can be seen on the below images, the two types of bearing are not even slightly similar. This article focuses on the anti-friction ball bearing only.
Ball bearings are probably the most widely known bearing and easiest to identify. This type of bearing operates upon point contact with one stationary ring (usually the outer ring) and one rotating ring.
Bearings allow humans to move an object on, or within, another object. Their main purpose is to extract desired motion from a whole motion. For example, a pump shaft that passes through a pump housing should rotate, but the housing should not. Almost all machines operate with some form of rotating, sliding or oscillating motion, where this occurs, bearings are used.