Single-Row Full Complement Cylindrical Roller Bearing
NCF型・NJG型 / SKF (Official website) / Listed on page 13 of the document
Single-row full complement cylindrical roller bearing incorporating the maximum number of rollers. Suitable for supporting very heavy radial loads at moderate speeds.
Last verified: (date the content was verified against the source document)
A reduced image of the relevant page is quoted from the document. Copyright belongs to SKF.Request removal
How to choose Rolling Bearings
Points to check when selecting, with the values for this product (Single-Row Full Complement Cylindrical Roller Bearing).
-
1. Bore and housing bore dimensions
Select the bore diameter d to match the shaft seat, the outside diameter D to match the housing bore, and the width B to suit the installation space. Main dimensions are standardized in ISO and JIS dimension series, so interchangeable products can be found by boundary dimension designation. For tapered roller bearings, also check the assembled width T; for thrust bearings, also check the height H.
-
2. Dynamic load rating based on life calculation
The basic dynamic load rating Cr is the reference value for calculating rated life. Verify that the required life is met using the equivalent load during operation and the rotational speed. For ball bearings, life is proportional to the cube of the load ratio, so providing load margin greatly extends life.
-
3. Margin for static and shock loads
The basic static load rating C0r is the allowable standard for permanent deformation generated at the rolling elements and raceways under stationary or low-speed conditions. For applications with oscillating motion or shock loads, confirm that a static safety factor against the maximum load is secured using C0r.
-
4. Operating speed and lubrication method
The limiting speed differs by lubrication method, and separate values are given for grease lubrication and oil lubrication. Confirm that the normal operating speed does not exceed the limiting value, and in high-speed ranges also consider cage material and precision grade. The reference speed can also be consulted as a thermal guideline.
-
5. Precision grade and internal clearance
Precision grades (P0, P6, P5, etc.) indicate rotational accuracy and dimensional accuracy; for high-precision applications such as machine tool spindles, select higher grades. Internal clearance (C2, CN, C3, etc.) is selected to allow for changes caused by interference fit and temperature differences during operation.
-
6. Materials and lubrication suited to the environment
For corrosive, high-temperature, vacuum, or clean environments, select specifications such as rings and rolling elements made of stainless steel or ceramics, or solid lubricants and fluorine grease for vacuum use. Check the operating temperature range, low dust generation, and whether food-grade grease registration applies against the application conditions.
This guide was written by AI based on the listed products' documents and specification items.
Description
NCF type has two flanges on the inner ring and one flange on the outer ring. NJG type has two flanges on the outer ring and one flange on the inner ring, and is self-retaining. The outer ring assembly of the NJG type can be easily removed.
Features
- High load capacity due to the maximum number of rollers
- Self-retaining NJG type allows easy mounting and dismounting
Applications
- Machines with very heavy loads and low speeds
- Absorption of axial displacement of the shaft relative to the housing
FAQ
- Q. How do the flange arrangements differ between NCF and NJG single-row full complement cylindrical roller bearings?
- A. NCF type has two flanges on the inner ring and one flange on the outer ring. NJG type is a self-retaining type with two flanges on the outer ring and one flange on the inner ring.
- Q. What is convenient about the NJG single-row full complement cylindrical roller bearing during mounting and dismounting?
- A. The NJG type is self-retaining, and its outer ring assembly can be easily removed. It allows easy mounting and dismounting.
- Q. What types of machines are NCF and NJG single-row full complement cylindrical roller bearings suitable for?
- A. They are suitable for supporting very heavy radial loads at moderate speeds. They are also used in machines with very heavy loads and low speeds.
- Q. Can NCF and NJG single-row full complement cylindrical roller bearings absorb axial displacement of the shaft?
- A. Absorption of axial displacement of the shaft relative to the housing is listed as an application.
Written by AI based on the content of the source documents.
Source documents
-
Catalog
SKF 円筒ころ軸受 (カタログ抜粋)
106 pages Open page 13
Found on: https://azuma-eg.com/catalogue/
Similar products (other manufacturers)
Rolling Bearings products, ordered by similarity of specifications and applications.
-
Rolling Bearings
JHS210 Cylindrical Roller Bearing for Backup Rolls of Multi-High Rolling Mills
Cylindrical roller bearing for backup rolls of multi-high rolling mills. The inner ring uses case-hardened steel to improve rolling life under low-viscosity lubrication.
JTEKT Corporation
-
Rolling Bearings
NNU4900 Series Cylindrical Roller Bearings
Double-row cylindrical roller bearings with flange on outer ring. Dimension tables for bore diameters of 120 to 190 mm are included.
JTEKT Corporation
-
Rolling Bearings
Bearee™ Resin Rolling Bearing (FL3307 Bearing)
A rolling bearing with inner and outer rings and cage made of resin materials offering corrosion resistance and self-lubricating properties. Suitable for environments where steel bearings cannot be used, such as underwater or in chemical solutions.
NTN Corporation
-
Rolling Bearings
Non-Separable Race-Integrated Thrust Needle Roller Bearing
A non-separable thrust needle roller bearing in which the cage is retained by the ribs of a steel plate race.
NTN Corporation
-
Rolling Bearings
Bearing for Gyroscopes
Small-diameter precision ball bearings used for the rotor shaft and gimbal shaft of gyroscopes. Features low starting torque and stable rotation, with cage and grease design minimizing torque variation.
NSK
-
Springs
Super Spring Kit
A kit containing springs from the K, D, and DS series. A selection set for prototype design and jig and fixture maintenance.
KS Industries Co., Ltd.
More products from SKF
See all →-
Rolling Bearings
SKF Explorer Deep Groove Ball Bearing
A high-performance single-row deep groove ball bearing with reduced friction, noise and vibration, and extended service life. It uses the same designation system as conventional standard bearings and is marked with an asterisk in product tables.
SKF
-
Rolling Bearings
SKF E2 Energy-Efficient Deep Groove Ball Bearing
Energy-efficient deep groove ball bearing that reduces friction torque by more than 30% compared with the SKF Explorer bearing of the same dimensions.
SKF
-
Rolling Bearings
SKF Quiet Running Deep Groove Ball Bearing (VQ658)
Model: VQ658
A quiet running deep groove ball bearing for demanding noise requirements such as wind turbine generators.
SKF
-
Rolling Bearings
SKF Single-Row Deep Groove Ball Bearings (Boundary Dimensions d 3–10 mm)
A series of small-bore single-row deep groove ball bearings with bore diameters of 3 to 10 mm. Outside diameter, width, basic load ratings, and limiting speeds are listed for each bearing number.
SKF
-
Rolling Bearings
Single-Row Deep Groove Ball Bearings
A series of single-row deep groove ball bearings with bore diameters of 12 to 240 mm. Basic load ratings, limiting speeds, mass and other data can be compared by bore, outside diameter and width.
SKF
-
Rolling Bearings
Sealed Single-Row Deep Groove Ball Bearings
A series of sealed deep groove ball bearings with bore diameters from 3 to 15 mm, covering small to medium sizes. Specifications are listed for each seal type, such as Z and RS.
SKF