NTN 22311EAKD1 spherical roller bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Spherical roller bearings
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Decoding NTN 22311EAKD1
- 223Series
- Spherical roller bearings, 223 series. Series differ in outside diameter and width even when the bore is the same.
- 11Bore
- Bore 55 mm (11 × 5).
- EAKD1Suffix
- NTN suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
22311 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
NTN 22311EAKD1 measures 55 mm across the bore and 120 mm across the outside diameter; its width is 43 mm (55 x 120 x 43 mm).
NTN 22311EAKD1 belongs to spherical roller bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 22311EAKD1 and any equivalents.
Spherical roller bearings from NTN are built to carry heavy radial loads along with axial loads in both directions, while compensating for angular misalignment between shaft and housing. The double row of rollers runs on a common inner ring, so the bearing tolerates shaft deflection and less-than-perfect alignment. You will find them in vibrating screens, mills, conveyors and other heavy equipment where shock and deformation are normal.
Reading the part number helps you order the right bearing. Take 22208EAKD1: the 222 prefix is the medium-section spherical roller series, while 223 denotes the higher-capacity series. EA is an internal design with greater capacity, K means a tapered bore at 1:12, and D1 is a stamped steel cage. A leading asterisk is an internal identification mark. These codes make selection and ordering straightforward.
Typical uses include belt conveyors in mining and cement, hammer mills, vibrating screens, food processing machines, pumping and ventilation equipment, and agricultural machinery. The ability to tolerate misalignment suits long shafts or assemblies where load-induced deformation is significant. They also appear in gear reducers and gearboxes under variable loads.
When selecting a spherical roller bearing, consider radial and axial load, rotation speed, and environmental conditions. Sealing matters: in dusty, wet or particle-laden areas, choose sealed or shielded variants. Lubrication and internal clearance also affect performance. During mounting, check alignment and the fit of the tapered bore on the shaft, because incorrect mounting can shorten service life.
For equivalents, NTN spherical roller bearings can be interchanged with other brands that follow the same dimensional and suffix designations, such as SKF, FAG, NSK or Timken, provided the main dimensions and bore type match. Always verify the complete code and tolerances. If you are unsure, send us the original code and we will point you to the compatible alternative.
To request a quote for an NTN spherical roller bearing, send the part number or dimensions through WhatsApp or email. Our team replies promptly and can also advise on the most suitable variant for your application.
Dimensions
55 x 120 x 43 mm (d x D x B): boundary dimensions for basic designation 22311, according to ISO 15.
- Bore
- 55 mm
- Outside diameter (D)
- 120mm
- Width (B)
- 43mm
SKF and other brands, same size
Other brands' pages with basic designation 22311: 55 x 120 x 43 mm (d x D x B) per ISO 15.
- Need the SKF 22311? We can also quote:22311 E22311 EK22311 E/C36 more →
- FAG22311-E1-XL22311-E1-XL-K22311-E1-XL-T41A1 more →
- LINK-BELT22311LB22311LBK22311LBC31 more →
- NSK22311EAE422311EAKE4
- RKB22311
- TIMKEN22311EJ22311EM
What they share are the ISO 15 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.
Frequently asked questions
- NTN 22311EAKD1 bearing: what are its dimensions?
- NTN 22311EAKD1 measures 55 mm across the bore and 120 mm across the outside diameter; its width is 43 mm (55 x 120 x 43 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 22311.
- What does the K suffix mean in a spherical roller bearing?
- The K suffix indicates a tapered bore with a 1:12 taper. This allows mounting on tapered shafts or adapter sleeves, which simplifies fitting and removal. Verify the bore type before ordering a replacement.
- Can I replace an NTN bearing with one from another brand?
- Yes, as long as the main dimensions, bore type and relevant suffixes match. Brands such as SKF, FAG or NSK usually have equivalents. Send us the original code and we will indicate the compatible alternative.
- How do I know whether I need a sealed or an open bearing?
- If the environment contains dust, moisture or particles, a bearing with seals or shields helps prevent lubricant contamination. In clean, well-lubricated environments, an open bearing may be sufficient. Assess your working conditions.