NUP410 bearing: complete specifications & equivalents

Specification table

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.

Cross references & equivalents

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 NUP410 model number is decoded

The NTN order number NUP410 denotes a 50×130×31 mm (1.969 × 5.118 × 1.22 in) cylindrical roller bearing in the NUP400 family, a pressed sheet-steel cage. On the NTN nameplate NUP states which ring carries the ribs, which determines whether NUP410 floats or locates; the numeric remainder is the ISO 15 series and 50 mm bore reference, not a fit or clearance instruction. Minimum radial load matters: an unloaded NUP410 at high speed skids its rollers and smears the raceway; spring preload or the rotor weight typically covers the requirement in motors and pumps. Mass 1970 g for the 50×130×31 mm NUP410 execution covers the pressed-steel cage and full roller complement; substitute on mass plus rating, not envelope alone. Keep the open bearing wrapped until fitting: the line-contact raceways of the 50 mm bore indent under a single hard particle, and the steel cage provides no sealing of its own.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On this 50 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 NUP410.
• If the shaft must be located both ways, do not use NUP410 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• Wide (22/23) and light (10/49) executions at 50 mm bore share bore but not OD/width; check the full NUP400 series code before substituting, because housing and shoulder geometry will not interchange.
• Wide (22/23) and light (10/49) executions at 50 mm bore share bore but not OD/width; check the full NUP400 series code before substituting, because housing and shoulder geometry will not interchange.
• Do not replace NUP410 with a deep-groove ball bearing on rating alone: line contact gives 143 kN radial capacity but the bearing only accepts small sustained axial guidance loads and misalignment tolerance is only 3–4 arc-minutes.
• The 143/124 kN ratings, 15.1 kN Pu and 1970 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NUP410 (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.