23292BK bearing: complete specifications & equivalents
The 23292BK is a ISO 15 radial bearing sized 460 x 830 x 296 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 460 mm |
| Outer diameter D | 830 mm |
| Width B | 296 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 8650 kN |
| Basic static load rating C0 | 14500 kN |
| Fatigue load limit Pu | 925 kN |
| Limiting speed (mechanical) | 340 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 683000 g |
| Manufacturer designation | NTN 23292BK |
| Standard | ISO 15 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203E |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); NTN® is a trademark of NTN Corporation, used here for identification only — mpnbase is not an authorized NTN distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at ntnglobal.com.
Dimensions in inches & 23200-series range
| Bore d | 18.11 in |
|---|---|
| Outer diameter D | 32.677 in |
| Width B | 11.654 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 185 mm |
| Smallest bore in 23200-series | 90 mm |
| Largest outer diameter in 23200-series | 1360 mm |
| Width range across 23200-series | 52.4–475 mm |
| Bore position in 23200-series (smallest first) | 25 of 34 |
| Bore above smallest 23200-series size | 370 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 23292B | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same NTN 23200-series envelope, cage and ratings; this is the tapered-bore execution (K, 1:12) of the cylindrical-bore 23292B — mounting (adapter/withdrawal sleeve or tapered seat, drive-up) differs. Verify shaft arrangement. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the 23292BK model number is decoded
NTN lists 23292BK with a 1:12 tapered bore (K) and plain outer ring (no D1/W33 groove): 460 mm bore, 830 mm OD, 296 mm width, rated 340 r/min on grease. On the NTN nameplate the suffix cluster after the size reads in order: cage design (—), bore (K), lubrication feature (none); 23292BK is assembled exactly in that order. Pu 925 kN is the catalogue fatigue load limit for 23292BK, used in the adjusted-life equation at contaminated or partial-film conditions typical of mining and vibrating duty. With about 18.8 kN of C per millimetre of the 460 mm bore, 23292BK screens interchange candidates quickly — then verify cage (EA/EM), bore (K/K30) and lubrication feature (D1/W33) suffixes. Mount 23292BK on its adapter or withdrawal sleeve on the 460 mm plain shaft: oil the sleeve, fit the lock nut, drive up to the NTN-specified residual clearance (or use oil injection on large seats), then lock the tab washer.
Typical equipment & failure modes
Common applications
- offshore and marine propulsion shaftlines
- large wind-turbine main-shaft arrangements
- steel-mill and heavy crusher main shafts
- mining shovel and dragline swing shafts
Known failure patterns
- lubricant starvation at the centre rib area when the D1/W33 groove is not connected to a relubrication supply
- cage damage when a mounting force is applied through the roller set instead of the ring face
- sliding wear and heat when relubrication intervals ignore the groove (D1/W33) supply path
- fretting corrosion between adapter sleeve and tapered bore when the drive-up is insufficient
- fretting corrosion between adapter sleeve and tapered bore when the drive-up is insufficient
Selection pitfalls — read before you substitute
- At 460 mm bore 23292BK is normally mounted on adapter/withdrawal sleeves with hydraulic assistance; follow the NTN drive-up angle or oil-injection procedure — manual nut tightening cannot set the multi-tonne seating correctly.
- Minimum load must be maintained even at rest under vibration: an unloaded 23292BK on a stopped screen false-brinells; parking brakes and shaker isolation both matter.
- Never substitute 23292BK by envelope alone: the 14500 kN C0 and 925 kN Pu are specific to the NTN basic execution, and vibrating duty depends heavily on cage identity.
- Never substitute 23292BK by envelope alone: the 14500 kN C0 and 925 kN Pu are specific to the NTN basic execution, and vibrating duty depends heavily on cage identity.
- The D1/W33 groove only helps if the housing has a matching grease passage; mounting a grooved 23292BK in a solid block with no port wastes the feature and leaves the centre rows under-lubricated.
- The 8650/14500 kN ratings, 925 kN Pu and 683000 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for 23292BK (basic); another maker's same-envelope part revises internal geometry, so re-verify ratings and cage before substitution on vibrating or rated drives.
Frequently asked questions
What are the dimensions and catalogue data of 23292BK?
23292BK is an NTN double-row spherical roller bearing to ISO 15: 460 mm bore, 830 mm OD and 296 mm width (18.11 × 32.677 × 11.654 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 8650 kN, C0 14500 kN, Pu 925 kN, grease limiting speed 340 r/min, oil 440 r/min, mass about 683000 g. It is open, with pressed-steel cage (standard execution) and a 1:12 tapered bore.
What is the difference between the K/K30 tapered bore and the cylindrical bore versions?
K denotes a 1:12 tapered bore. 23292BK mounts on an adapter sleeve (or tapered shaft seat) and is driven up to the specified residual clearance; its cylindrical-bore counterpart in the same envelope and ratings is 23292B.
What do EA and EM mean on NTN spherical roller bearings?
EA is the NTN standard-capacity/high-capacity execution with a pressed sheet-steel window cage; EM is the high-capacity execution with a one-piece machined brass cage. Both use the optimised symmetric-roller design, but cage identity changes mass, speed behaviour and suitability for duties like vibrating screens, so they are separate order numbers. 23292BK is the basic execution.
What do D1 and W33 mean on 23292BK?
23292BK is listed without a D1/W33 outer-ring groove in 2203E; lubrication is supplied from the ring sides. D1 (NTN spelling) and W33 add the annular groove plus holes and are ordered as distinct suffixed executions of the same envelope.
How much misalignment and axial load can 23292BK take?
The sphered outer raceway compensates static and dynamic misalignment in the order of 1–2° (verify the exact 2203E figure for the 23200 series); beyond that, load concentrates on one roller row. Load is predominantly radial with a moderate axial share in either direction — 8650 kN C / 14500 kN C0 — but sustained pure axial load is not recommended because it unloads one row.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203E on 2026-10-01. Read our editorial & correction policy.