430215 bearing: complete specifications & equivalents
The 430215 is a ANSI ABMA 19.2 radial bearing sized 75 x 130 x 62 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 75 mm |
| Outer diameter D | 130 mm |
| Width B | 62 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 264 kN |
| Basic static load rating C0 | 350 kN |
| Limiting speed (mechanical) | 2300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 3100 g |
| Manufacturer designation | NTN 4T-430215 |
| Standard | ANSI ABMA 19.2 |
| Catalog version | NTN 2203E 2026-09-25 |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN 2203E 2026-09-25) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN 2203E 2026-09-25); 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 & 4t-430-series range
| Bore d | 2.953 in |
|---|---|
| Outer diameter D | 5.118 in |
| Width B | 2.441 in |
| ISO bore code | 15 |
| Radial section height (D−d)/2 | 27.5 mm |
| Smallest bore in 4t-430-series | 40 mm |
| Largest outer diameter in 4t-430-series | 870 mm |
| Width range across 4t-430-series | 45–310 mm |
| Bore position in 4t-430-series (smallest first) | 8 of 41 |
| Bore above smallest 4t-430-series size | 35 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 430215 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
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 430215 model number is decoded
4T-430215 is the NTN 4T catalogue entry for a 75×130×62 mm double-row tapered roller bearing — the TDO arrangement reacts radial load plus thrust in both directions without a second bearing. Unlike a pair of single-row bearings, the TDO unit of 4T-430215 integrates both rows in one article: the 62 mm overall width and the internal clearance are ground and set by NTN, so there is no field adjustment dimension. 2203E prints no Cu fatigue load limit for 4T-430215 (the dash in the Cu column); life work for this size uses the 264/350 kN C/C0 pair directly. The internal clearance of 4T-430215 is set at the factory by the double cup and spacer-less grinding; do not attempt to re-adjust it with shaft nuts — the 62 mm overall width is the finished dimension. Fillet radii and shoulder heights must follow the 2203E mounting table for 4T-430215; the double cup must seat square across its full 62 mm width.
Typical equipment & failure modes
Common applications
- heavy gearbox and mill drive shafts
- crusher and screening-plant main shafts
- large fan and blower shafts with thrust reversal
- steel-plant roller table and conveyor drives
Known failure patterns
- roller large-end smearing against the cone ribs when one row of the unit runs starved of lubricant
- overheated running after a field attempt to "tighten up" the factory-set internal clearance
- one-row flaking when a bent shaft concentrates the combined load on a single row of the pair
- cage damage when the unit is lifted by one cone instead of the double cup during fitting
- indentation of both raceways by hard particles in an open, unsealed arrangement
Selection pitfalls — read before you substitute
- Mount the 75 mm unit by induction heating (max 120 °C); at 3.1 kg a cocked lift damages the cages and ribs before the bearing ever runs.
- The 430 light plan keeps 4T-430215 narrower and faster than the 432 heavy execution of the same 75 mm bore; where shock or a high thrust share dominates, verify whether the heavier 432-family row is the intended position.
- Lubricant must reach both rows: a housing groove aligned to the cup mid-width of 4T-430215 feeds the two roller complements evenly; a single-side feed starves the far row.
- Grease packs must leave free volume across the 62 mm width; over-greasing a unit churning near the 3,000 r/min oil-band speed raises temperature and expels the grease.
- Grease packs must leave free volume across the 62 mm width; over-greasing a unit churning near the 3,000 r/min oil-band speed raises temperature and expels the grease.
- The 264/350 kN ratings here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-430215; internal geometry legitimately differs between manufacturers, so re-verify ratings, clearance class and suffix before substituting another make on a rated drive.
Frequently asked questions
What are the dimensions and catalogue ratings of NTN 4T-430215?
4T-430215 is a double-row tapered roller bearing of TDO (back-to-back) construction: 75 mm bore, 130 mm outside diameter and 62 mm overall width. From NTN Ball and Roller Bearings CAT.No.2203E: C 264 kN, C0 350 kN (2203E prints a dash for Cu on this size), grease limiting speed 2,300 r/min, oil speed 3,000 r/min, mass about 3.1 kg. It is an open, preset-clearance unit with pressed-steel cages.
What is the difference between the NTN 430 and 432 double-row series at 75 mm bore?
Both are TDO double-row tapered roller units, but 430 is the light plan and 432 the heavy plan: at the same bore the 432 execution is wider and heavier with higher load ratings. 4T-430215 belongs to the light-duty 430-family TDO double-row series. Large sizes continue the plans as 4130/4131/4230/4231 (430 family) and 3230/3231 (432 family).
Can the internal clearance of 4T-430215 be adjusted at mounting?
No. The TDO unit — two cone assemblies against one double cup — is ground and set by NTN at the factory, and the 62 mm overall width is the finished dimension. Mounting sets no end play: seat the unit square, clamp the cup uniformly and verify free rotation. Field re-adjustment overloads one row.
What do the suffix letters on 430215 mean?
With no letter suffix, 430215 is the basic open double-row execution: steel cages, factory-set internal clearance, no feature suffix in the order code.
Why does 4T-430215 list two speeds, 2,300 and 3,000 r/min?
The lower figure, 2,300 r/min, is the grease-lubricated limiting speed for the two rows and their cages. With oil lubrication NTN rates 4T-430215 at 3,000 r/min because oil removes heat from both roller rows better — the housing feed must reach both rows through the double cup.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN 2203E 2026-09-25 on 2026-10-01. Read our editorial & correction policy.