NUP2220 bearing: complete specifications & equivalents
The NUP2220 is a ISO 15 radial bearing sized 100 x 180 x 46 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 100 mm |
| Outer diameter D | 180 mm |
| Width B | 46 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 286 kN |
| Basic static load rating C0 | 340 kN |
| Fatigue load limit Pu | 37.5 kN |
| Limiting speed (mechanical) | 3500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 4480 g |
| Manufacturer designation | NTN NUP2220 |
| 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 & NUP2200-series range
| Bore d | 3.937 in |
|---|---|
| Outer diameter D | 7.087 in |
| Width B | 1.811 in |
| ISO bore code | 20 |
| Radial section height (D−d)/2 | 40 mm |
| Smallest bore in NUP2200-series | 17 mm |
| Largest outer diameter in NUP2200-series | 580 mm |
| Width range across NUP2200-series | 16–150 mm |
| Bore position in NUP2200-series (smallest first) | 18 of 34 |
| Bore above smallest NUP2200-series size | 83 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NUP2220-ECP | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 100×180×46 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application 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 NUP2220 model number is decoded
NUP2220 is the wide (22) section of the NTN NUP2200 dimension series for a 100 mm shaft — 286 kN of basic dynamic capacity in a 4480 g, open bearing. 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 100 mm, with 180 mm OD and 46 mm width from the ISO 15 general plan. At 4,100 r/min with oil versus 3,500 r/min with grease (a 600 r/min band), lubrication choice for NUP2220 is a thermal decision, not just a sealing one. The 100 mm (3.937 in) bore and 180 mm (7.087 in) OD are ISO 15 boundary values; fillet and shoulder dimensions must still come from the NTN mounting table for the 46 mm-wide ring. Mount the separable inner ring + roller assembly on the shaft first and slide the outer ring into the housing; never press the outer ring through the rollers of NUP2220.
Typical equipment & failure modes
Common applications
- large pump, turbine and compressor rotors
- rolling-mill auxiliary drive shafts
- crusher and vibrating-screen drive shafts
- marine gearbox and deck-machinery shafts
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
- grease starvation and cage drag when relubrication intervals are extended past the grease life
- brinelling from static overload or impact during handling
- edge loading from shaft deflection beyond the 3–4 arc-minute alignment limit
Selection pitfalls — read before you substitute
- Induction-heat the 100 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 180 mm raceway.
- The 40.0 mm section at 100 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 46 mm-wide cavity.
- Wide (22/23) and light (10/49) executions at 100 mm bore share bore but not OD/width; check the full NUP2200 series code before substituting, because housing and shoulder geometry will not interchange.
- Open NUP2220 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 100 mm contact.
- Grease limiting speed 3,500 r/min and oil 4,100 r/min are different limits for NUP2220: the first is the cage/lubricant mechanical ceiling, the second assumes real oil flow rather than an oil bath.
- The 286/340 kN ratings, 37.5 kN Pu and 4480 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NUP2220 (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 NUP2220?
NUP2220 is an NTN NUP single-row cylindrical roller bearing to ISO 15: 100 mm bore, 180 mm OD and 46 mm width (3.937 × 7.087 × 1.811 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 286 kN, C0 340 kN, Pu 37.5 kN, grease limiting speed 3,500 r/min, oil 4,100 r/min, mass about 4480 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. NUP2220 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. NUP2220 is supplied in the standard open execution shown in the table.
Can NUP2220 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 NUP2220?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 120 mm, Ew 160 mm. The nominal bore/OD remain 100/180 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 3,500 r/min grease / 4,100 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.