NUP1014 bearing: complete specifications & equivalents
The NUP1014 is a ISO 15 radial bearing sized 70 x 110 x 20 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 70 mm |
| Outer diameter D | 110 mm |
| Width B | 20 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 64.5 kN |
| Basic static load rating C0 | 70.5 kN |
| Fatigue load limit Pu | 8.6 kN |
| Limiting speed (mechanical) | 6500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 689 g |
| Manufacturer designation | NTN NUP1014 |
| 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 | 2.756 in |
|---|---|
| Outer diameter D | 4.331 in |
| Width B | 0.787 in |
| ISO bore code | 14 |
| Radial section height (D−d)/2 | 20 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) | 10 of 42 |
| Bore above smallest NUP1000-series size | 45 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NUP1014 | 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 NUP1014 model number is decoded
NUP1014 is an NTN NUP cylindrical roller bearing: the NJ rib arrangement plus a loose L-shaped rib ring on the inner ring — it locates the shaft in both axial directions, inside the 70×110×20 mm ISO 15 envelope. Numbering ties NUP1014 to its envelope: type code NUP, series NUP1000, 70 mm bore; the 110×20 mm outline therefore swaps dimensionally with other ISO 15 bearings of the same code, though rib arrangements differ by prefix. With C 64.5 kN and C0 70.5 kN (C0/C ≈ 1.09) 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. Thermal planning around the 6,500 r/min grease ceiling should include the cage type (a pressed sheet-steel cage) and oil-flow option to 7,600 r/min for continuously high-duty 70 mm positions. 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 70 mm shaft.
Typical equipment & failure modes
Common applications
- cement and mining conveyor drive pulleys
- heavy industrial gearbox and reducer shafts
- large pump, turbine and compressor rotors
- rolling-mill auxiliary drive shafts
Known failure patterns
- roller smearing (microwelding) at start-up before the oil film builds under insufficient radial load
- cage distortion after a mounting blow carried through the roller set
- micro-pitting when the EHL film falls below the composite roughness at high specific load
- fretting corrosion on a loose rotating shaft seat
- rolling-contact fatigue after the catalogue L10 life is exceeded
Selection pitfalls — read before you substitute
- Induction-heat the 70 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 110 mm raceway.
- Grease limiting speed 6,500 r/min and oil 7,600 r/min are different limits for NUP1014: the first is the cage/lubricant mechanical ceiling, the second assumes real oil flow rather than an oil bath.
- Minimum radial load is frequently missed in oversized motor and fan selections: an underloaded NUP1014 skids at 6,500 r/min and fails by smearing long before L10 fatigue.
- Minimum radial load is frequently missed in oversized motor and fan selections: an underloaded NUP1014 skids at 6,500 r/min and fails by smearing long before L10 fatigue.
- Minimum radial load is frequently missed in oversized motor and fan selections: an underloaded NUP1014 skids at 6,500 r/min and fails by smearing long before L10 fatigue.
- The 64.5/70.5 kN ratings, 8.6 kN Pu and 689 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NUP1014 (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 NUP1014?
NUP1014 is an NTN NUP single-row cylindrical roller bearing to ISO 15: 70 mm bore, 110 mm OD and 20 mm width (2.756 × 4.331 × 0.787 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 64.5 kN, C0 70.5 kN, Pu 8.6 kN, grease limiting speed 6,500 r/min, oil 7,600 r/min, mass about 689 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. NUP1014 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. NUP1014 is supplied in the standard open execution shown in the table.
Can NUP1014 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 NUP1014?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 80 mm, Ew 100 mm. The nominal bore/OD remain 70/110 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 6,500 r/min grease / 7,600 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.