N1092 bearing: complete specifications & equivalents
The N1092 is a ISO 15 radial bearing sized 460 x 680 x 100 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 | 680 mm |
| Width B | 100 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 1710 kN |
| Basic static load rating C0 | 2630 kN |
| Fatigue load limit Pu | 191 kN |
| Limiting speed (mechanical) | 850 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 120000 g |
| Manufacturer designation | NTN N1092 |
| 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 & N1000-series range
| Bore d | 18.11 in |
|---|---|
| Outer diameter D | 26.772 in |
| Width B | 3.937 in |
| ISO bore code | 92 |
| Radial section height (D−d)/2 | 110 mm |
| Smallest bore in N1000-series | 25 mm |
| Largest outer diameter in N1000-series | 720 mm |
| Width range across N1000-series | 12–100 mm |
| Bore position in N1000-series (smallest first) | 40 of 42 |
| Bore above smallest N1000-series size | 435 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| N1092 | 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 N1092 model number is decoded
N1092 is an NTN N cylindrical roller bearing: two integral ribs on the inner ring and a ribless separable outer ring — equivalent float behaviour with the separable ring on the housing side, inside the 460×680×100 mm ISO 15 envelope. Numbering ties N1092 to its envelope: type code N, series N1000, 460 mm bore; the 680×100 mm outline therefore swaps dimensionally with other ISO 15 bearings of the same code, though rib arrangements differ by prefix. Line contact between rollers and raceways gives N1092 high radial capacity but no tolerance for misalignment: beyond roughly 3–4 arc-minutes the roller ends edge-load and fatigue accelerates. Thermal planning around the 850 r/min grease ceiling should include the cage type (a pressed sheet-steel cage) and oil-flow option to 1,000 r/min for continuously high-duty 460 mm positions. Provide axial location with an adjacent locating bearing rather than expecting the float cylindrical set to hold thrust on the 460 mm shaft.
Typical equipment & failure modes
Common applications
- large turbine and generator rotor bearings
- wind-turbine gearbox planet and rotor shafts
- ship propulsion line shafts and reduction gears
- mining SAG/ball-mill drive shafts
Known failure patterns
- roller smearing (microwelding) at start-up before the oil film builds under insufficient radial load
- cage wear accelerated when the EA high-capacity roller complement runs continuously above its thermal balance
- roller-end and raceway scoring from inadequate oil flow under heavy radial load
- fretting corrosion on a loose rotating shaft seat
- fretting corrosion on a loose rotating shaft seat
Selection pitfalls — read before you substitute
- At 460 mm bore, oil-lubricated arrangements toward 1,000 r/min need positive flow and drain design; the 120000 g N1092 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
- If the shaft must be located both ways, do not use N1092 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
- Wide (22/23) and light (10/49) executions at 460 mm bore share bore but not OD/width; check the full N1000 series code before substituting, because housing and shoulder geometry will not interchange.
- Minimum radial load is frequently missed in oversized motor and fan selections: an underloaded N1092 skids at 850 r/min and fails by smearing long before L10 fatigue.
- Wide (22/23) and light (10/49) executions at 460 mm bore share bore but not OD/width; check the full N1000 series code before substituting, because housing and shoulder geometry will not interchange.
- The 1710/2630 kN ratings, 191 kN Pu and 120000 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N1092 (standard execution); other makes sharing the ISO 15 envelope revise internal geometry without changing the order number, so keep the 2203E reference with the specification for critical drives.
Frequently asked questions
What are the dimensions and catalogue data of N1092?
N1092 is an NTN N single-row cylindrical roller bearing to ISO 15: 460 mm bore, 680 mm OD and 100 mm width (18.11 × 26.772 × 3.937 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 1710 kN, C0 2630 kN, Pu 191 kN, grease limiting speed 850 r/min, oil 1,000 r/min, mass about 120000 g. It is open, with a pressed sheet-steel cage.
What is the difference between NU, NJ, NUP, N and NF cylindrical roller bearings?
The prefix states the rib arrangement: NU has two outer-ring ribs and a ribless inner ring (float, no axial load); NJ adds ribs for one-direction location; NUP adds a loose L-ring to locate both directions; N has two inner-ring ribs and a separable outer ring; NF has one rib per ring for one-direction guidance. N1092 is two integral ribs on the inner ring and a ribless separable outer ring — equivalent float behaviour with the separable ring on the housing side.
What do the EA, E and ＊ suffixes mean on NTN cylindrical roller bearings?
EA is NTN's high-capacity design with a pressed sheet-steel cage and optimised roller complement in the same ISO 15 envelope; E marks the high-capacity design at the larger bores; the ＊ symbol printed before the code in the NTN catalogue marks the ULTAGE new-generation specification and is not typed as part of the order number. N1092 is supplied in the standard open execution shown in the table.
Can N1092 take axial load and locate a shaft?
the N design is non-locating like NU but floats with the separable outer ring in the housing. Provide axial location with an adjacent locating bearing (angular-contact, deep-groove or a paired NJ/NUP set).
What do Fw and Ew mean for N1092?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 516 mm, Ew 624 mm. The nominal bore/OD remain 460/680 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 850 r/min grease / 1,000 r/min oil.
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.