07100-07204 bearing: complete specifications & equivalents
The 07100-07204 is a ANSI ABMA 19.2 radial bearing sized 25.4 x 51.994 x 15.011 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 25.4 mm |
| Outer diameter D | 51.994 mm |
| Width B | 15.011 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 28.8 kN |
| Basic static load rating C0 | 27.9 kN |
| Limiting speed (mechanical) | 7500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 141 g |
| Manufacturer designation | NTN 4T-07100/07204 |
| 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-inch-series range
| Bore d | 1 in |
|---|---|
| Outer diameter D | 2.047 in |
| Width B | 0.591 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 13.3 mm |
| Smallest bore in 4t-inch-series | 12.7 mm |
| Largest outer diameter in 4t-inch-series | 260 mm |
| Width range across 4t-inch-series | 10.998–77.788 mm |
| Bore position in 4t-inch-series (smallest first) | 19 of 148 |
| Bore above smallest 4t-inch-series size | 12.7 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 07100-07196 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same NTN cone 4T-07100 paired with a different cup (07196): cone interchangeable, cup differs — OD, assembled width T and ratings follow the cup. Verify the full cone/cup reference before substituting. |
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 07100-07204 model number is decoded
NTN supplies this 1 in (25.4 mm) shaft position as 4T-07100/07204: cone 07100, cup 07204, profiled rollers and a pressed-steel cage, rated 28.8 kN basic dynamic and 27.9 kN static. Reading the designation: 4T-07100/07204 follows the ABMA inch convention — the number before the slash is the cone (inner ring with roller set and cage), the number after the slash is the cup (outer ring), and the pure-numeric inch family lettering ties the pair to its boundary plan. The 13.3 mm radial section over the 25.4 mm bore positions the contact line of the pair; abutment shoulders and spacers are dimensioned from that geometry, not from the bore alone. Housing fitment sequence for 4T-07100/07204: press the 07204 cup square into the 51.994 mm seat first, then bring the 07100 cone (on its 25.4 mm shaft) into adjustment — the two references are separate engineering parts that happen to ship as one set. Mount the 25.4 mm cone with an induction heater (max 120 °C) and press the 51.994 mm cup with a sleeve; driving either ring through the rollers brinells the raceways.
Typical equipment & failure modes
Common applications
- pump and blower drive shafts with combined load
- truck and trailer axle hubs on inch-dimensioned axles
- agricultural tractor transmission and PTO shafts
- industrial gearboxes built to inch shafting
Known failure patterns
- rib-face scoring when the thrust share of the combined load exceeds what the cone rib of this size carries
- flaking on one cone only when a bent shaft loads the O/X pair unevenly
- cup creep and housing fretting when the cup seat is cut too loose for the rotating load
- pressed-steel cage pocket wear from roller skid at light radial load and high speed
- fretting corrosion on a loose cone seat that creeps under rotating load
Selection pitfalls — read before you substitute
- Hub and pinion positions of this 25.4 mm class are adjusted in pairs; verify end play against the axle or gearbox drawing and re-torque after bedding-in instead of trusting the first setting on 4T-07100/07204.
- The pure-numeric inch family at 25.4 mm bore (51.994×15.011 mm assembled) is one of several inch families sharing similar bores; cross-series swaps change OD, T and contact angle, so match the full 07100/07204 reference at purchase.
- An unloaded 4T-07100/07204 near 7,500 r/min lets rollers skid and smear the cone rib; spring-preload lightly loaded high-speed pairs.
- Replacing one half of an adjusted pair without resetting end play negates the 15.011 mm T logic: re-adjust the set and re-verify the contact pattern rather than reusing the old spacer stack.
- Do not confuse T (15.011 mm, the assembled cone-plus-cup width) with the cone width when drawing spacers; an abutment sized to T leaves the cup unseated.
- The 28.8/27.9 kN ratings here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-07100/07204; internal geometry legitimately differs between inch-series makers, so re-verify ratings, adjustment and the exact cone/cup references before substituting another brand on a rated drive.
Frequently asked questions
What are the dimensions and catalogue ratings of NTN 4T-07100/07204?
4T-07100/07204 is an inch-series single-row tapered roller bearing to the ABMA boundary plan: 25.4 mm bore (1 in), 51.994 mm outside diameter and 15.011 mm assembled width T (2.047 × 0.591 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 28.8 kN, C0 27.9 kN, grease limiting speed 7,500 r/min, oil speed 10,000 r/min, mass about 141 g. It is an open, separable cone/cup set with a pressed-steel cage.
Are the cone and cup of 4T-07100/07204 interchangeable separately?
Yes — ABMA inch parts are individually interchangeable: the 07100 cone or the 07204 cup can be replaced by an identical reference from NTN or another ABMA-dimensioned maker. Pairing the cone with a different cup reference is a different catalogue row: OD, assembled T and the 28.8/27.9 kN ratings change with the cup.
What is the difference between 4T-07100/07204 and a metric ISO 355 tapered bearing?
4T-07100/07204 follows the ABMA inch boundary plan with cone/cup references; ISO 355 bearings use metric dimension-series numbers (302, 322, …). Even where a metric size looks close to 25.4×51.994×15.011 mm, the envelopes and contact angles differ — the two systems are not drop-in interchangeable; check every boundary value before substituting.
What does the 4T prefix on 4T-07100/07204 mean?
4T is NTN's tapered roller bearing quality mark, stamped on cone and cup in the factory. It identifies NTN's 4T programme and is not a dimension or variant code, so interchange lists quote the bare 07100/07204 references; the 4T spelling is retained among this page's search aliases.
Why does 4T-07100/07204 list two speeds, 7,500 and 10,000 r/min?
The lower figure, 7,500 r/min, is the grease-lubricated limiting speed — the mechanical ceiling for the cage, rollers and cone-rib contact. With oil lubrication NTN rates 4T-07100/07204 at 10,000 r/min because oil removes rib-contact heat better. Real limits still depend on pair adjustment, oil flow and cooling.
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.