NUP1019 bearing: complete specifications & equivalents
The NUP1019 is a ISO 15 radial bearing sized 95 x 145 x 24 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 95 mm |
| Outer diameter D | 145 mm |
| Width B | 24 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 101 kN |
| Basic static load rating C0 | 120 kN |
| Fatigue load limit Pu | 13.9 kN |
| Limiting speed (mechanical) | 4800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1380 g |
| Manufacturer designation | NTN NUP1019 |
| 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 & NUP1000-series range
| Bore d | 3.74 in |
|---|---|
| Outer diameter D | 5.709 in |
| Width B | 0.945 in |
| ISO bore code | 19 |
| Radial section height (D−d)/2 | 25 mm |
| Smallest bore in NUP1000-series | 25 mm |
| Largest outer diameter in NUP1000-series | 720 mm |
| Width range across NUP1000-series | 12–100 mm |
| Bore position in NUP1000-series (smallest first) | 15 of 42 |
| Bore above smallest NUP1000-series size | 70 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NUP1019 | 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 NUP1019 model number is decoded
The NTN order number NUP1019 denotes a 95×145×24 mm (3.74 × 5.709 × 0.945 in) cylindrical roller bearing in the NUP1000 family, a pressed sheet-steel cage. Numbering ties NUP1019 to its envelope: type code NUP, series NUP1000, 95 mm bore; the 145×24 mm outline therefore swaps dimensionally with other ISO 15 bearings of the same code, though rib arrangements differ by prefix. The 25.0 mm radial section ((145−95)/2) frames the roller complement; capacity per millimetre of bore is about 1.1 kN/mm before application factors. Rating life at 101 kN C assumes clean oil and adequate film; the 13.9 kN Pu floor means contamination derating — not the C rating alone — governs adjusted life in dusty gearboxes. Keep the open bearing wrapped until fitting: the line-contact raceways of the 95 mm bore indent under a single hard particle, and the steel cage provides no sealing of its own.
Typical equipment & failure modes
Common applications
- rolling-mill auxiliary drive shafts
- crusher and vibrating-screen drive shafts
- marine gearbox and deck-machinery shafts
- large electric-motor and generator rotors
Known failure patterns
- inner-ring raceway spalling from overload in the line-contact Hertzian zone
- pressed-steel cage pocket wear when rollers skid at light load or too-thin lubricant
- roller-end and raceway scoring from inadequate oil flow under heavy radial load
- hard-particle indentation of raceways in unfiltered oil or open arrangements
- edge loading from shaft deflection beyond the 3–4 arc-minute alignment limit
Selection pitfalls — read before you substitute
- Induction-heat the 95 mm inner ring (max 120 °C) and mount it before fitting the outer ring; the ring mass makes square guidance essential — driving through the rollers brinells the 145 mm raceway.
- Open NUP1019 units need application-supplied sealing and a defined lubricant schedule; film thickness is the first failure mode for line contact when viscosity drops at the 95 mm contact.
- The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 101/120 kN pair here belongs to NUP1019 as printed, not to the bare size.
- The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 101/120 kN pair here belongs to NUP1019 as printed, not to the bare size.
- The 25.0 mm section at 95 mm bore leaves a narrow oil path; with the standard cage the relubrication groove and oil-level design must keep grease from churning in the 24 mm-wide cavity.
- The 101/120 kN ratings, 13.9 kN Pu and 1380 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NUP1019 (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 NUP1019?
NUP1019 is an NTN NUP single-row cylindrical roller bearing to ISO 15: 95 mm bore, 145 mm OD and 24 mm width (3.74 × 5.709 × 0.945 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 101 kN, C0 120 kN, Pu 13.9 kN, grease limiting speed 4,800 r/min, oil 5,600 r/min, mass about 1380 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. NUP1019 is the NJ rib arrangement plus a loose L-shaped rib ring on the inner ring — it locates the shaft in both axial directions.
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. NUP1019 is supplied in the standard open execution shown in the table.
Can NUP1019 take axial load and locate a shaft?
the NUP design provides two-direction axial location via its loose rib ring, for light/moderate thrust guidance. The loose rib ring still only suits light/short-duration axial guidance; heavy thrust belongs to a dedicated thrust bearing.
What do Fw and Ew mean for NUP1019?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 108 mm, Ew 132 mm. The nominal bore/OD remain 95/145 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 4,800 r/min grease / 5,600 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.