Single row full complement cylindrical roller bearings
The cage is removed and the space filled with as many rollers as the raceway will hold. Radial capacity rises sharply for the same envelope, but the rollers now rub against each other and the bearing will not tolerate speed. SES holds the range as an authorised SKF distributor, covering bore range About 15 mm to 500 mm; designations NCF, NJG and NNF families; roller guidance By ring flanges and adjacent rollers; speed rating Substantially below caged equivalents. Executions include NCF design, NJG design, sealed full complement bearings, snap ring retained executions, among others. It is specified most often into crane sheaves, hook blocks and rope drums and slow-turning drum and barrel supports. Every part is genuine SKF through official channels, with designation, specification and options confirmed against your duty before it ships — supplied from Kolkata and our branch network, with breakdown cover that does not sit in an inbox.
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Load
Highest radial for the section
Speed
Low, rollers rub each other
Cage
None, full roller complement
Lubrication
Frequent, sliding contact between rollers
Where it runs.
You will find Single row full complement cylindrical roller bearings in the parts of a plant where this particular duty actually occurs. In practice that means crane sheaves, hook blocks and rope drums, slow-turning drum and barrel supports, jack shafts and gear rim pinion supports, and equally press eccentric shafts and connecting rod ends, vertical mill roller assemblies, heavy travel wheel and trolley bearings. What links them is the duty rather than the machine name — load: Highest radial for the section. If your installation is not on that list it matters less than you would think: the operating condition decides the specification. Send us the load, the speed, the running temperature and the environment it runs in, and we will match it to the right execution in the SKF range and confirm what is in stock.
Specify it against the duty.
Specification here follows the operating condition, not the catalogue. Load is very heavy and rotational speed is genuinely low — A full complement design, which converts the cage space into extra roller length. The application accelerates, decelerates or runs above walking pace — A caged bearing instead. Without a cage, rollers touch at their surfaces and move in opposite directions at the contact, generating heat that grease cannot carry away. The bearing is buried and relubrication access is poor — A sealed full complement execution with a grease charge suited to the sliding contact, or reroute a lubrication line to it. Where two of those apply at once, specify for the harsher of the two — under-specifying is what puts the part back on the bench a month later. Send us the duty and we will confirm the execution.
Ordering this from SES.
There is no cage to keep the rollers apart, so speed is the constraint and heat is the symptom. Keep these on a shorter lubrication interval than a caged bearing doing the same job in the same position.