NUP1006 bearing: complete specifications & equivalents
The NUP1006 is a ISO 15 radial bearing sized 30 x 55 x 13 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 30 mm |
| Outer diameter D | 55 mm |
| Width B | 13 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 21.8 kN |
| Basic static load rating C0 | 19.6 kN |
| Fatigue load limit Pu | 2.39 kN |
| Limiting speed (mechanical) | 14000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 128 g |
| Manufacturer designation | NTN NUP1006 |
| 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 | 1.181 in |
|---|---|
| Outer diameter D | 2.165 in |
| Width B | 0.512 in |
| ISO bore code | 06 |
| Radial section height (D−d)/2 | 12.5 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) | 2 of 42 |
| Bore above smallest NUP1000-series size | 5 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NUP1006 | 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 NUP1006 model number is decoded
NUP1006 belongs to the NTN cylindrical roller range in NTN Ball and Roller Bearings CAT.No.2203E: line-contact rollers between ground raceways for a 21.8 kN dynamic rating in the 30 mm bore. Numbering ties NUP1006 to its envelope: type code NUP, series NUP1000, 30 mm bore; the 55×13 mm outline therefore swaps dimensionally with other ISO 15 bearings of the same code, though rib arrangements differ by prefix. With C 21.8 kN and C0 19.6 kN (C0/C ≈ 0.90) the bearing is proportioned for heavy radial load; the NUP design provides two-direction axial location via its loose rib ring, for light/moderate thrust guidance. With the inner ring rotating, catalogue practice is a k5/m5 shaft seat and an H7/H6 housing; the outer ring must remain free to creep slightly axially in non-locating NUP arrangements. Housing and shaft fillets must clear the ring chamfers of NUP1006; an oversized radius locks the ring on its face and tilts the 13 mm-wide seat.
Typical equipment & failure modes
Common applications
- pump and compressor crankshafts and rotors
- machine-tool gearbox and spindle radial sets
- material-handling drum and wheel shafts
- papermaking and printing auxiliary drives
Known failure patterns
- inner-ring raceway spalling from overload in the line-contact Hertzian zone
- cage wear accelerated when the EA high-capacity roller complement runs continuously above its thermal balance
- grease starvation and cage drag when relubrication intervals are extended past the grease life
- brinelling from static overload or impact during handling
- hard-particle indentation of raceways in unfiltered oil or open arrangements
Selection pitfalls — read before you substitute
- On this 30 mm bore, shaft thermal growth can preload the inner ring if the fit is too tight; verify residual interference at temperature and confirm the float ring still slides after mounting NUP1006.
- Do not replace NUP1006 with a deep-groove ball bearing on rating alone: line contact gives 21.8 kN radial capacity but the bearing only accepts small sustained axial guidance loads and misalignment tolerance is only 3–4 arc-minutes.
- Do not replace NUP1006 with a deep-groove ball bearing on rating alone: line contact gives 21.8 kN radial capacity but the bearing only accepts small sustained axial guidance loads and misalignment tolerance is only 3–4 arc-minutes.
- The NUP rib arrangement is not interchangeable with another prefix on the same 30 mm seat: inner ring two ribs + loose L-ring. Swapping NU for NJ changes axial location behaviour even though the 55×13 mm envelope matches.
- Minimum radial load is frequently missed in oversized motor and fan selections: an underloaded NUP1006 skids at 14,000 r/min and fails by smearing long before L10 fatigue.
- The 21.8/19.6 kN ratings, 2.39 kN Pu and 128 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NUP1006 (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 NUP1006?
NUP1006 is an NTN NUP single-row cylindrical roller bearing to ISO 15: 30 mm bore, 55 mm OD and 13 mm width (1.181 × 2.165 × 0.512 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 21.8 kN, C0 19.6 kN, Pu 2.39 kN, grease limiting speed 14,000 r/min, oil 16,000 r/min, mass about 128 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. NUP1006 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. NUP1006 is supplied in the standard open execution shown in the table.
Can NUP1006 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 NUP1006?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 36.5 mm, Ew 48.5 mm. The nominal bore/OD remain 30/55 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 14,000 r/min grease / 16,000 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.