NTN 23184BK spherical roller bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Spherical roller bearings
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Decoding NTN 23184BK
- 231Series
- Spherical roller bearings, 231 series. Series differ in outside diameter and width even when the bore is the same.
- 84Bore
- Bore 420 mm (84 × 5).
- BKSuffix
- NTN suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
23184 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
NTN 23184BK measures 420 mm across the bore and 700 mm across the outside diameter; its width is 224 mm (420 x 700 x 224 mm).
NTN 23184BK 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 23184BK and any equivalents.
NTN BK series spherical roller bearings handle high radial loads while allowing the shaft and housing to sit at an angle to each other. Two rows of rollers run on a spherical outer raceway, so small mounting errors or shaft flex do not cause early failure. They suit equipment where alignment is not perfect, including conveyors, mills, crushers and large process machines.
The part number tells you most of what you need. Digits after the slash give the bore in millimeters; the prefix points to a dimension series; and the BK suffix covers construction details that NTN sets for each size, such as cage style or surface treatment. Reading these elements correctly is the first step when matching a replacement.
Typical duties include vertical mills, jaw crushers, vibrating screens, conveyor belts and high-power gearboxes, plus dryers and presses in pulp plants where continuous operation matters. The combination of combined-load capacity and misalignment tolerance fits equipment exposed to vibration or shock.
Selection starts with radial and axial load, speed and the operating environment. During mounting, check shaft-to-housing alignment: the bearing absorbs some error, but too much shortens its life. Lubrication, by grease or oil as specified, carries heat away and limits wear. For dirty or dusty locations, choose labyrinth seals or oil seals that keep contaminants out of the bearing interior.
Other makers following the same dimensional designation, such as SKF, FAG or NSK, can serve as equivalents, but tolerances and cage design may differ. Compare load capacity and service conditions before substituting. Our team can review the application data and point to a compatible option.
To request a quote, send the exact part number or size by WhatsApp or email. We reply promptly, can suggest equivalents and help you choose the right bearing for your equipment.
Dimensions
420 x 700 x 224 mm (d x D x B): boundary dimensions for basic designation 23184, according to ISO 15.
- Bore
- 420 mm
- Outside diameter (D)
- 700mm
- Width (B)
- 224mm
SKF and other brands, same size
Other brands' pages with basic designation 23184: 420 x 700 x 224 mm (d x D x B) per ISO 15.
- Need the SKF 23184? We can also quote:23184 CJ/W3323184 CKJ/W3323184 CA/C3W332 more →
- FAG23184-BEA-XL-MB123184-BEA-XL-K-MB1
- LINK-BELT23184LBC323184LBKC3
- NSK23184CAME423184CAMKE4
- RKB23184
- TIMKEN23184YMB
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 23184BK bearing: what are its dimensions?
- NTN 23184BK measures 420 mm across the bore and 700 mm across the outside diameter; its width is 224 mm (420 x 700 x 224 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 23184.
- What does the BK suffix mean on NTN bearings?
- It marks a particular construction variant in the series and may relate to cage type, heat treatment or special tolerances. For the exact features of a given size, contact our technical team by WhatsApp.
- How do I choose the right spherical roller bearing?
- Review radial and axial load, speed, expected misalignment and environmental conditions. With those details we can help you select the correct part number. Write to us by WhatsApp.
- Are NTN BK series bearings interchangeable with other brands?
- They can be exchanged with bearings from other makers that use the same dimensional designation, such as SKF or FAG, provided tolerances and load capacity are checked. Send us the original part number and we will identify a compatible alternative.