N1064 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 N1064 model number is decoded

N1064 is an NTN N cylindrical roller bearing: two integral ribs on the inner ring and a ribless separable outer ring — equivalent float behaviour with the separable ring on the housing side, inside the 320×480×74 mm ISO 15 envelope. Reading the code: N for the separable-outer-ring type, then the ISO 15 diameter/width series and the bore code — ×5 = 320 mm (00–03 use the 10/12/15/17 exception table). Minimum radial load matters: an unloaded N1064 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 45300 g for the 320×480×74 mm N1064 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 320 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

• At 320 mm bore, oil-lubricated arrangements toward 1,500 r/min need positive flow and drain design; the 45300 g N1064 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• The N rib arrangement is not interchangeable with another prefix on the same 320 mm seat: inner ring ribbed, outer ring ribless. Swapping NU for NJ changes axial location behaviour even though the 480×74 mm envelope matches.
• Open N1064 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.
• The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 970/1410 kN pair here belongs to N1064 as printed, not to the bare size.
• Do not replace N1064 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.
• The 970/1410 kN ratings, 113 kN Pu and 45300 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N1064 (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.