30336UTG 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 30336UTG model number is decoded

30336UTG belongs to the NTN metric 4T tapered roller range (large-OD 30300 family with the steeper contact angle); the open bearing leaves sealing to the application and is normally ordered and mounted as an adjustable matched pair. The last two digits 36 are the ISO bore code, ×5 = 180 mm (codes 00–03 use the 10/12/15/17 exception table) under the ISO 355 numbering; the 83 mm value printed here is T, the width of the fully assembled cone-plus-cup set, not the inner-ring width alone. A tapered roller bearing reacts combined radial and one-direction axial load; NTN mounts 30336UTG cone and cup separately and adjusts end play or preload against a second bearing, so the arrangement locates the shaft in both directions. Speed planning uses both catalogue columns: grease 960 r/min is the cage/rib mechanical ceiling for 30336UTG, oil 1,400 r/min is available with circulating oil — a 440 r/min margin at this size. Re-adjustment after bedding-in is standard practice: re-check end play once the paired 30336UTG arrangement has run in, because initial seat seating relaxes the set preload slightly.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 180 mm bore the 30336UTG set is adjusted with hydraulic nuts on large mill and wind positions; follow the drive-up angle/end-play procedure, because manual torque methods cannot control preload at the 1170 kN C level.
• The steeper contact angle of the large-OD 30300 family with the steeper contact angle raises axial capacity but lowers the speed ceiling against a 302/322 bearing at 180 mm bore; do not swap to the lighter family without re-checking the 960 r/min grease limit and the thrust load split.
• The U/UTG/X/C/CA/D suffix variants of a base number share the bore but not the article: ordering 30336UTG by size alone can deliver the wrong contact-angle execution for a pinion position.
• Do not confuse T (83 mm assembled width of cone + cup) with the cone width when drawing spacers; an abutment sized to T instead of the ring width leaves the cup unseated.
• Do not confuse T (83 mm assembled width of cone + cup) with the cone width when drawing spacers; an abutment sized to T instead of the ring width leaves the cup unseated.
• The 1170/1190 kN ratings and 107 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 30336UTG; internal geometry legitimately differs between manufacturers, so re-verify ratings, adjustment and suffix before substituting another make on a rated drive.