NUP10-500 bearing: complete specifications & equivalents
The NUP10-500 is a ISO 15 radial bearing sized 500 x 720 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 | 500 mm |
| Outer diameter D | 720 mm |
| Width B | 100 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 1790 kN |
| Basic static load rating C0 | 2870 kN |
| Fatigue load limit Pu | 203 kN |
| Limiting speed (mechanical) | 770 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 128000 g |
| Manufacturer designation | NTN NUP10/500 |
| 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 | 19.685 in |
|---|---|
| Outer diameter D | 28.346 in |
| Width B | 3.937 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 110 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) | 42 of 42 |
| Bore above smallest NUP1000-series size | 475 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NUP10 | 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 NUP10-500 model number is decoded
The NTN order number NUP10/500 denotes a 500×720×100 mm (19.685 × 28.346 × 3.937 in) cylindrical roller bearing in the NUP1000 family, a pressed sheet-steel cage. The leading NUP defines the rib arrangement (inner ring two ribs + loose L-ring); the dimension-series digits and the two-digit bore code resolve to 500 mm, with 720 mm OD and 100 mm width from the ISO 15 general plan. NTN prints two speed ceilings: 770 r/min grease and 910 r/min oil — the pressed-steel cage and lubricant film set the real limit at the 500 mm bore. The 3.6 kN-per-mm-bore figure (1790 kN over 500 mm) lets a NUP10/500 interchange candidate be screened quickly against the same-envelope ball or roller alternatives. Confirm the loose L-shaped rib ring is fitted and seated, since it is what turns the NJ-type arrangement into the two-direction-locating NUP set on the 500 mm shaft.
Typical equipment & failure modes
Common applications
- offshore drawworks and winch drums
- heavy press and large gearbox main shafts
- rolling-mill work-roll and backup-roll positions
- large turbine and generator rotor bearings
Known failure patterns
- roller smearing (microwelding) at start-up before the oil film builds under insufficient radial load
- pressed-steel cage pocket wear when rollers skid at light load or too-thin lubricant
- micro-pitting when the EHL film falls below the composite roughness at high specific load
- brinelling from static overload or impact during handling
- electrical pitting on VFD-driven motor shafts without grounding protection
Selection pitfalls — read before you substitute
- At 500 mm bore, oil-lubricated arrangements toward 910 r/min need positive flow and drain design; the 128000 g NUP10/500 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
- Open NUP10/500 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 500 mm contact.
- The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 1790/2870 kN pair here belongs to NUP10/500 as printed, not to the bare size.
- The NUP rib arrangement is not interchangeable with another prefix on the same 500 mm seat: inner ring two ribs + loose L-ring. Swapping NU for NJ changes axial location behaviour even though the 720×100 mm envelope matches.
- If the shaft must be located both ways, do not use NUP10/500 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
- The 1790/2870 kN ratings, 203 kN Pu and 128000 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NUP10/500 (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 NUP10/500?
NUP10/500 is an NTN NUP single-row cylindrical roller bearing to ISO 15: 500 mm bore, 720 mm OD and 100 mm width (19.685 × 28.346 × 3.937 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 1790 kN, C0 2870 kN, Pu 203 kN, grease limiting speed 770 r/min, oil 910 r/min, mass about 128000 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. NUP10/500 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. NUP10/500 is supplied in the standard open execution shown in the table.
Can NUP10/500 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 NUP10/500?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 556 mm, Ew 664 mm. The nominal bore/OD remain 500/720 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 770 r/min grease / 910 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.