Self-Aligning Ball Bearings (Open Type, Cylindrical Bore/Tapered Bore)
1200/1300/2200/2300系 ETN9・TN9 / SKF (Official website)
Self-aligning ball bearings with bore diameters of 5 to 240 mm. Dimensions and basic load ratings differ by bearing number. The series is available in both cylindrical bore and tapered bore types.
Last verified: (date the content was verified against the source document)
Specifications
| Inner diameter d | 5〜240 mm |
|---|---|
| Outer diameter D | 19〜320 mm |
| Basic dynamic load rating Cr | 2.51〜163 kN |
| Basic static load rating C0r | 0.025〜72 kN |
| Limiting speed (grease lubrication) | 4,000〜63,000 r/min |
How to choose Rolling Bearings
Points to check when selecting, with the values for this product (Self-Aligning Ball Bearings (Open Type, Cylindrical Bore/Tapered Bore)).
-
1. Bore and housing bore dimensions
This product: Inner diameter d 5〜240 mmSelect 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
This product: Basic dynamic load rating Cr 2.51〜163 kNThe 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
This product: Basic static load rating C0r 0.025〜72 kNThe 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
This product: Limiting speed (grease lubrication) 4,000〜63,000 r/minThe 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
Product data table organizing outer diameter, width, basic load ratings, and limiting speeds for each bearing number. Covers bore diameter ranges of 5 to 30 mm, 35 to 70 mm, 75 to 130 mm, and 150 to 240 mm, and includes tapered bore products such as EKTN9.
Features
- Available in both cylindrical bore and tapered bore types
- Wide size range from 5 mm to 240 mm bore diameter
FAQ
- Q. What is the bore diameter range of the Self-Aligning Ball Bearings 1200/1300/2200/2300 series ETN9 and TN9, and how do cylindrical and tapered bores correspond?
- A. The bore diameter ranges from 5 to 240 mm. Both cylindrical bore and tapered bore types are available, and tapered bore products are listed under bearing numbers such as EKTN9.
- Q. What are the ranges of outer diameter, basic dynamic load rating, basic static load rating, and limiting speed for the Self-Aligning Ball Bearings 1200/1300/2200/2300 series ETN9 and TN9?
- A. The outer diameter D ranges from 19 to 320 mm, the basic dynamic load rating Cr from 2.51 to 163 kN, and the basic static load rating C0r from 0.025 to 72 kN. The limiting speed (grease lubrication) ranges from 4,000 to 63,000 r/min.
Written by AI based on the content of the source documents.
Source documents
-
Catalog
SKF 自動調心玉軸受 製品カタログ(設計およびバリエーション・軸受データ)
30 pages Found on: https://azuma-eg.com/catalogue/
Similar products (other manufacturers)
Rolling Bearings products, ordered by similarity of specifications and applications.
-
Rolling Bearings
Four-Row Tapered Roller Bearing, 45D Series
45D series of four-row tapered roller bearings with bore diameters from approximately 346 mm to 510 mm.
JTEKT Corporation
-
Rolling Bearings
Roll Neck Bearings for Section Steel Rolling Mills (Double-Row and Four-Row)
Double-row tapered roller bearings, four-row tapered roller bearings, and four-row cylindrical roller bearings used for V-rolls and roll necks of section steel rolling mills.
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