23096B bearing: complete specifications & equivalents
The 23096B is a ISO 15 radial bearing sized 480 x 700 x 165 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 480 mm |
| Outer diameter D | 700 mm |
| Width B | 165 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 4050 kN |
| Basic static load rating C0 | 7700 kN |
| Fatigue load limit Pu | 570 kN |
| Limiting speed (mechanical) | 420 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 217000 g |
| Manufacturer designation | NTN 23096B |
| 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 & 23000-series range
| Bore d | 18.898 in |
|---|---|
| Outer diameter D | 27.559 in |
| Width B | 6.496 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 110 mm |
| Smallest bore in 23000-series | 70 mm |
| Largest outer diameter in 23000-series | 1580 mm |
| Width range across 23000-series | 27–345 mm |
| Bore position in 23000-series (smallest first) | 31 of 46 |
| Bore above smallest 23000-series size | 410 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 23096BK | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same NTN 23000-series envelope, cage and ratings; this is the cylindrical-bore execution of the tapered-bore 23096BK (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 23096B model number is decoded
The NTN order number 23096B identifies a 480×700×165 mm (18.898 × 27.559 × 6.496 in) spherical roller bearing, cylindrical bore, to the ISO 15 boundary plan. Numbering ties 23096B to its envelope and execution: same-number EA versus EM or plain variants share the 480 mm bore but differ in cage and sometimes mass, so they are quoted as separate articles. The plain outer ring (no D1/W33 groove) makes relubrication part of the design: fresh grease reaches the rolling elements through the outer-ring feature rather than relying solely on end-side packing. Pu 570 kN against C0 7700 kN anchors the contamination derating; for dirty mining duty the adjusted life of 23096B moves with cleanliness far more than with small C variations. Fillet radii on shaft and housing must clear the ring chamfers of the 165 mm-wide set; use the NTN shoulder/withdrawal-groove table rather than copying a ball-bearing layout.
Typical equipment & failure modes
Common applications
- mining shovel and dragline swing shafts
- cement-rotary-kiln support and trunnion rolls
- large SAG/ball-mill trunnion and pinion shafts
- heavy vibrating screens and grizzly feeders
Known failure patterns
- raceway spalling at the roller ends when misalignment or deflection concentrates the line contact
- pressed EA cage fatigue under sustained vibration when minimum load is not maintained
- micro-pitting when the EHL film is thinner than the raceway composite roughness
- water-induced pitting in washdown or outdoor duty without effective external seals
- water-induced pitting in washdown or outdoor duty without effective external seals
Selection pitfalls — read before you substitute
- At 480 mm bore 23096B 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.
- The D1/W33 groove only helps if the housing has a matching grease passage; mounting a grooved 23096B in a solid block with no port wastes the feature and leaves the centre rows under-lubricated.
- K and K30 are different tapers — K is 1:12 and K30 is 1:30 on the wide series; an adapter sleeve for one will not mount the other 480 mm bearing, and drive-up procedures differ.
- Adapter-sleeve mounting requires the correct sleeve series and locknut for the 480 mm shaft; a sleeve sized to bore alone ignores thread, width and the oil-injection option on large K30 seats.
- K and K30 are different tapers — K is 1:12 and K30 is 1:30 on the wide series; an adapter sleeve for one will not mount the other 480 mm bearing, and drive-up procedures differ.
- The 4050/7700 kN ratings, 570 kN Pu and 217000 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for 23096B (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 23096B?
23096B is an NTN double-row spherical roller bearing to ISO 15: 480 mm bore, 700 mm OD and 165 mm width (18.898 × 27.559 × 6.496 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 4050 kN, C0 7700 kN, Pu 570 kN, grease limiting speed 420 r/min, oil 550 r/min, mass about 217000 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?
23096B has a cylindrical bore and mounts directly on a machined shaft seat. Its tapered-bore counterpart is 23096BK (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. 23096B is the basic execution.
What do D1 and W33 mean on 23096B?
23096B 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 23096B take?
The sphered outer raceway compensates static and dynamic misalignment in the order of 1–2° (verify the exact 2203E figure for the 23000 series); beyond that, load concentrates on one roller row. Load is predominantly radial with a moderate axial share in either direction — 4050 kN C / 7700 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.