NN4932 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 NN4932 model number is decoded

In NTN Ball and Roller Bearings CAT.No.2203E, NN4932 appears as a 160 mm bore single-row cylindrical roller bearing (395 kN C / 740 kN C0) with a machined or stamped steel cage per the precision execution, listed to the ISO 15 boundary plan. Numbering ties NN4932 to its envelope: type code NN, series NN4900, 160 mm bore; the 220×60 mm outline therefore swaps dimensionally with other ISO 15 bearings of the same code, though rib arrangements differ by prefix. NTN prints the raceway diameters for this size — Fw 178.5 mm and Ew 206.5169 mm — the envelope inside the 160/220 mm bore/OD where the rollers actually run. Mass 6240 g for the 160×220×60 mm NN4932 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 160 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 160 mm bore, oil-lubricated arrangements toward 3,100 r/min need positive flow and drain design; the 6240 g NN4932 ring stores enough heat that grease-only duty needs a careful relubrication calculation.
• The NN rib arrangement is not interchangeable with another prefix on the same 160 mm seat: double row, ribbed inner ring, separable outer. Swapping NU for NJ changes axial location behaviour even though the 220×60 mm envelope matches.
• Never press either ring through the roller complement when fitting: mounting force goes through the ring faces, or the 220 mm race brinells and releases as vibration within hours.
• The EA high-capacity roller complement changes the load figure versus the basic execution of the same number; the 395/740 kN pair here belongs to NN4932 as printed, not to the bare size.
• The NN rib arrangement is not interchangeable with another prefix on the same 160 mm seat: double row, ribbed inner ring, separable outer. Swapping NU for NJ changes axial location behaviour even though the 220×60 mm envelope matches.
• The 395/740 kN ratings, 74 kN Pu and 6240 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for NN4932 (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.