NUP207

Cylindrical roller bearings are rolling bearings specifically engineered to accommodate high radial loads. Their key rolling elements are cylindrical rollers that make linear contact with the raceways. This design makes them exceptionally effective at handling pure radial forces, serving as critical components in a vast array of industrial applications. Compared to ball bearings of the same size, they offer significantly higher radial load-carrying capacity.

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Cylindrical Roller Bearing

ISO	NUP207
ГОСТ	92207
Bore diameter	d	35 mm
Outside diameter	D	72 mm
Width	B	17 mm
Basic dynamic load rating	C	30.1 kN
Basic static load rating	C0	30.1 kN
Reference speed		6600 r/min
Limiting speed		5600 r/min
Weight	0.322 kg

Structure of Cylindrical Roller Bearings

A typical cylindrical roller bearing consists of the following main components:
1. Outer Ring:Usually features fixed ribs or flanges on one or both sides to provide axial guidance for the rollers.
2. Inner Ring:Also typically has ribs or flanges for roller guidance. Depending on the design, the inner ring can be integral with ribs or separable (facilitating mounting).
3. Cylindrical Rollers:Precision-ground cylindrical rolling elements that are the core load-carrying components. Roller length is usually slightly less than their diameter.
4. Cage (Retainer):Separates the rollers evenly, prevents them from rubbing against each other, and guides them correctly within the raceways. Cage materials include steel, brass, or polymers (e.g., polyamide/nylon).

Characteristics of Cylindrical Roller Bearings

High Radial Load Capacity:The line contact design enables them to handle significantly higher radial loads than same-sized ball bearings.
High Radial Rigidity:Excellent stiffness in the radial direction, resulting in minimal deformation under load.
Low Friction:Low rolling resistance contributes to high efficiency.
High-Speed Capability:Well-designed bearings (especially with lightweight cages) are suitable for high rotational speeds.
Separability:Many types (e.g., NU, NJ designs) feature separable rings (inner and/or outer), simplifying mounting, dismounting, and maintenance.
Limited Axial Load Capacity:Generally can only accommodate very small axial loads (depending on rib design), or require combination with other bearings to handle axial forces.