24192B bearing: complete specifications & equivalents
The 24192B is a ISO 15 radial bearing sized 460 x 760 x 300 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 | 760 mm |
| Width B | 300 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 7900 kN |
| Basic static load rating C0 | 14500 kN |
| Fatigue load limit Pu | 805 kN |
| Limiting speed (mechanical) | 360 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 550000 g |
| Manufacturer designation | NTN 24192B |
| 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 & 24100-series range
| Bore d | 18.11 in |
|---|---|
| Outer diameter D | 29.921 in |
| Width B | 11.811 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 150 mm |
| Smallest bore in 24100-series | 100 mm |
| Largest outer diameter in 24100-series | 1150 mm |
| Width range across 24100-series | 65–438 mm |
| Bore position in 24100-series (smallest first) | 24 of 32 |
| Bore above smallest 24100-series size | 360 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 24192BK30 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same NTN 24100-series envelope, cage and ratings; this is the cylindrical-bore execution of the tapered-bore 24192BK30 (K/K30 sleeve or tapered-seat mounting). 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 24192B model number is decoded
24192B belongs to the 24100 series of NTN spherical rollers: self-aligning, high radial capacity, moderate axial load in either direction. The leading digits are the ISO 15 dimension series (24100 series); the bore code resolves to 460 mm (two-digit code ×5, with the 00–03 exception table), and 760 mm OD / 300 mm width follow the general plan. The bearing accepts predominantly radial load with a moderate axial share, but is not a pure thrust bearing: sustained axial-only load skids the unloaded row and damages the basic cage. Selection: the C0/C ratio of 1.84 (14500/7900 kN) reflects the heavy static and shock proportioning of 24192B; size the equivalent load at the required L10 with shock factor for the application. Supply grease through the outer-ring feature during commissioning and at the calculated interval, rotating the 460 mm bore assembly by hand to distribute it across both rows.
Typical equipment & failure modes
Common applications
- large wind-turbine main-shaft arrangements
- steel-mill and heavy crusher main shafts
- mining shovel and dragline swing shafts
- cement-rotary-kiln support and trunnion rolls
Known failure patterns
- raceway spalling at the roller ends when misalignment or deflection concentrates the line contact
- machined EM cage wear from inadequate oil film at the cage-guiding surfaces
- roller-end smearing during skidding starts under light load and high viscosity grease
- rolling-contact fatigue after the catalogue L10 life at the actual load
- fretting corrosion between adapter sleeve and tapered bore when the drive-up is insufficient
Selection pitfalls — read before you substitute
- At 460 mm bore 24192B 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.
- Oil relubrication toward 470 r/min needs drain and level design; flooding the 300 mm cavity churns heat through the heavy roller set and cage despite the higher oil speed figure.
- Open spherical rollers swallow dust in mining duty; specify labyrinth or taconite seals externally, or the 360 r/min grease rating is lost to abrasive wear long before fatigue.
- The two roller rows must share load equally — a tilted spacer or unequal abutment on the 300 mm-wide ring loads one row only and shows as asymmetric race polish during inspection.
- Never substitute 24192B by envelope alone: the 14500 kN C0 and 805 kN Pu are specific to the NTN basic execution, and vibrating duty depends heavily on cage identity.
- The 7900/14500 kN ratings, 805 kN Pu and 550000 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for 24192B (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 24192B?
24192B is an NTN double-row spherical roller bearing to ISO 15: 460 mm bore, 760 mm OD and 300 mm width (18.11 × 29.921 × 11.811 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 7900 kN, C0 14500 kN, Pu 805 kN, grease limiting speed 360 r/min, oil 470 r/min, mass about 550000 g. It is open, with pressed-steel cage (standard execution).
What is the difference between the K/K30 tapered bore and the cylindrical bore versions?
24192B has a cylindrical bore and mounts directly on a machined shaft seat. Its tapered-bore counterpart is 24192BK30 (K = 1:12, or K30 = 1:30 on the wide series), intended for adapter/withdrawal-sleeve mounting.
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. 24192B is the basic execution.
What do D1 and W33 mean on 24192B?
24192B 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 24192B take?
The sphered outer raceway compensates static and dynamic misalignment in the order of 1–2° (verify the exact 2203E figure for the 24100 series); beyond that, load concentrates on one roller row. Load is predominantly radial with a moderate axial share in either direction — 7900 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.