NU416-NTN bearing: complete specifications & equivalents
The NU416-NTN is a ISO 15 radial bearing sized 80 x 200 x 48 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 80 mm |
| Outer diameter D | 200 mm |
| Width B | 48 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 330 kN |
| Basic static load rating C0 | 315 kN |
| Fatigue load limit Pu | 34.5 kN |
| Limiting speed (mechanical) | 3000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 7140 g |
| Manufacturer designation | NTN NU416 |
| 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 & NU400-series range
| Bore d | 3.15 in |
|---|---|
| Outer diameter D | 7.874 in |
| Width B | 1.89 in |
| ISO bore code | 16 |
| Radial section height (D−d)/2 | 60 mm |
| Smallest bore in NU400-series | 25 mm |
| Largest outer diameter in NU400-series | 310 mm |
| Width range across NU400-series | 21–72 mm |
| Bore position in NU400-series (smallest first) | 12 of 17 |
| Bore above smallest NU400-series size | 55 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NU416 | SKF | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
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 NU416-NTN model number is decoded
NTN lists NU416 on the 80×200 mm envelope, 48 mm wide: a line-contact radial bearing with a pressed sheet-steel cage and a grease limiting speed of 3,000 r/min. Digit by digit, NU416 reads as NU (outer ring ribbed, inner ring ribless), ISO 15 series, and bore 80 mm; trailing letters such as EA or E mark the cage/capacity execution and are part of the order number. NTN ships these bearings open with normal (CN) radial clearance and P0 tolerance as standard; precision classes and C3/C4 clearance are separate order suffixes, not part of NU416. Speed ratio check: limiting 3,000 r/min is .86 of the 3,500 r/min oil value for NU416; grease-churn heating closes that gap as fill quantity rises. 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 NU416.
Typical equipment & failure modes
Common applications
- large electric-motor and generator rotors
- cement and mining conveyor drive pulleys
- heavy industrial gearbox and reducer shafts
- large pump, turbine and compressor rotors
Known failure patterns
- inner-ring raceway spalling from overload in the line-contact Hertzian zone
- cage distortion after a mounting blow carried through the roller set
- roller-end and raceway scoring from inadequate oil flow under heavy radial load
- rolling-contact fatigue after the catalogue L10 life is exceeded
- fretting corrosion on a loose rotating shaft seat
Selection pitfalls — read before you substitute
- Induction-heat the 80 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 200 mm raceway.
- The 48 mm width and abutment faces must be square to the axis; a tilted spacer concentrates load across the roller set and shows as uneven raceway polish on the 80 mm inner ring.
- Wide (22/23) and light (10/49) executions at 80 mm bore share bore but not OD/width; check the full NU400 series code before substituting, because housing and shoulder geometry will not interchange.
- The NU rib arrangement is not interchangeable with another prefix on the same 80 mm seat: outer ring ribbed, inner ring ribless. Swapping NU for NJ changes axial location behaviour even though the 200×48 mm envelope matches.
- Never press either ring through the roller complement when fitting: mounting force goes through the ring faces, or the 200 mm race brinells and releases as vibration within hours.
- The 330/315 kN ratings, 34.5 kN Pu and 7140 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NU416 (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 NU416?
NU416 is an NTN NU single-row cylindrical roller bearing to ISO 15: 80 mm bore, 200 mm OD and 48 mm width (3.15 × 7.874 × 1.89 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 330 kN, C0 315 kN, Pu 34.5 kN, grease limiting speed 3,000 r/min, oil 3,500 r/min, mass about 7140 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. NU416 is two integral ribs on the outer ring and a ribless, separable inner ring — a non-locating bearing that lets the shaft float axially.
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. NU416 is supplied in the standard open execution shown in the table.
Can NU416 take axial load and locate a shaft?
the NU design carries no axial load and floats axially on both sides. Provide axial location with an adjacent locating bearing (angular-contact, deep-groove or a paired NJ/NUP set).
What do Fw and Ew mean for NU416?
Fw is the inner sub-assembly raceway/roller-set envelope diameter and Ew the outer-ring raceway diameter printed for geometric checks: Fw 110 mm, Ew 170 mm. The nominal bore/OD remain 80/200 mm; Fw/Ew describe the rolling-contact path, and speeds still run to 3,000 r/min grease / 3,500 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.