NU1064 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 NU1064 model number is decoded

In NTN Ball and Roller Bearings CAT.No.2203E, NU1064 appears as a 320 mm bore single-row cylindrical roller bearing (970 kN C / 1410 kN C0) with a pressed sheet-steel cage, listed to the ISO 15 boundary plan. Numbering ties NU1064 to its envelope: type code NU, series NU1000, 320 mm bore; the 480×74 mm outline therefore swaps dimensionally with other ISO 15 bearings of the same code, though rib arrangements differ by prefix. NTN prints two speed ceilings: 1,300 r/min grease and 1,500 r/min oil — the pressed-steel cage and lubricant film set the real limit at the 320 mm bore. Rating life at 970 kN C assumes clean oil and adequate film; the 113 kN Pu floor means contamination derating — not the C rating alone — governs adjusted life in dusty gearboxes. Provide axial location with an adjacent locating bearing rather than expecting the float cylindrical set to hold thrust on the 320 mm shaft.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 320 mm bore, oil-lubricated arrangements toward 1,500 r/min need positive flow and drain design; the 45300 g NU1064 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• Do not replace NU1064 with a deep-groove ball bearing on rating alone: line contact gives 970 kN radial capacity but the bearing cannot carry the thrust duty a ball bearing can and misalignment tolerance is only 3–4 arc-minutes.
• Open NU1064 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 320 mm contact.
• Wide (22/23) and light (10/49) executions at 320 mm bore share bore but not OD/width; check the full NU1000 series code before substituting, because housing and shoulder geometry will not interchange.
• If the shaft must be located both ways, do not use NU1064 alone: pair it with a locating bearing or specify the NUP execution with the matching loose rib ring from the 2203E table.
• The 970/1410 kN ratings, 113 kN Pu and 45300 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NU1064 (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.