JM822049-JM822010 bearing: complete specifications & equivalents
The JM822049-JM822010 is a ANSI ABMA 19.2 radial bearing sized 110 x 165 x 35 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 110 mm |
| Outer diameter D | 165 mm |
| Width B | 35 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 212 kN |
| Basic static load rating C0 | 315 kN |
| Limiting speed (mechanical) | 2100 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 2520 g |
| Manufacturer designation | NTN 4T-JM822049/JM822010 |
| 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 | 4.331 in |
|---|---|
| Outer diameter D | 6.496 in |
| Width B | 1.378 in |
| ISO bore code | 49 |
| Radial section height (D−d)/2 | 27.5 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) | 125 of 148 |
| Bore above smallest 4t-inch-series size | 97.3 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| JM822049 | 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 JM822049-JM822010 model number is decoded
4T-JM822049/JM822010 is the NTN 4T catalogue entry for a 110×165×35 mm inch tapered roller bearing — an ABMA-dimensioned cone/cup set, not an ISO 355 metric bearing, even though the table quotes metric equivalents. Unlike ISO 355 metric numbers, this ABMA code does not encode the bore arithmetically: JM822049 identifies the cone of 110 mm (4.331 in) bore by catalogue lookup, and JM822010 fixes the 165 mm OD. The 1.9 kN of dynamic capacity per millimetre of bore summarises the 212 kN rating over the 110 mm bore — sanity-check any interchange candidate against this ratio and the 35 mm T. The printed 212/315 kN ratings belong to the assembled JM822049+JM822010 pair; a sibling row using the same cone with a different cup carries its own rating row because the raceway track shifts with the cup. Running clearance of 4T-JM822049/JM822010 is set at mounting by axial displacement of cone or cup — the catalogue does not ship a preloaded set, so the drawing must state end play or preload.
Typical equipment & failure modes
Common applications
- large conveyor head pulleys in bulk-handling plant
- paper-machine and calender roll supports
- off-highway and forestry machine axles
- marine winch and deck-machinery shafts
Known failure patterns
- rib-face scoring when the thrust share of the combined load exceeds what the cone rib of this size carries
- false brinelling on a stationary pair exposed to vibration during transport or standby
- preload loss and noise after one bearing of the adjusted pair is replaced without resetting end play
- pressed-steel cage pocket wear from roller skid at light radial load and high speed
- water-induced pitting when the open bearing sees washdown without external seals
Selection pitfalls — read before you substitute
- Mount the 110 mm cone by induction heating (max 120 °C) and the 165 mm cup with a press sleeve; at 2520 g a cocked ring brinells the raceway directly.
- The J-prefixed JM822049 code belongs to a metric-envelope inch family: its 110 mm bore is a round metric figure, yet the part still follows ABMA cone/cup numbering — do not substitute an ISO 355 metric 302/322 bearing of the same bore without checking OD, T and contact angle.
- Quote the full JM822049/JM822010 pair at ordering: the JM822049 cone also ships against sibling cups, and a cup from another reference changes the 35 mm assembled width and the rating.
- ABMA makes the 110×165 mm envelope interchangeable, not the ratings: NTN prints 212/315 kN for this execution and another make of the same number can differ in roller complement.
- Quote the full JM822049/JM822010 pair at ordering: the JM822049 cone also ships against sibling cups, and a cup from another reference changes the 35 mm assembled width and the rating.
- The 212/315 kN ratings here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-JM822049/JM822010; 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-JM822049/JM822010?
4T-JM822049/JM822010 is an inch-series single-row tapered roller bearing to the ABMA boundary plan: 110 mm bore (4.331 in), 165 mm outside diameter and 35 mm assembled width T (6.496 × 1.378 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 212 kN, C0 315 kN, grease limiting speed 2,100 r/min, oil speed 2,700 r/min, mass about 2520 g. It is an open, separable cone/cup set with a pressed-steel cage.
Are the cone and cup of 4T-JM822049/JM822010 interchangeable separately?
Yes — ABMA inch parts are individually interchangeable: the JM822049 cone or the JM822010 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 212/315 kN ratings change with the cup.
What is the difference between 4T-JM822049/JM822010 and a metric ISO 355 tapered bearing?
4T-JM822049/JM822010 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 110×165×35 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-JM822049/JM822010 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 JM822049/JM822010 references; the 4T spelling is retained among this page's search aliases.
Why does 4T-JM822049/JM822010 list two speeds, 2,100 and 2,700 r/min?
The lower figure, 2,100 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-JM822049/JM822010 at 2,700 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.