32056XUUTG 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 32056XUUTG model number is decoded

32056XUUTG is a metric single-row tapered roller bearing in the NTN 4T programme: a pressed-steel cage guides profiled rollers between a separable cone and cup on the 280×420 mm ISO 355 envelope, with 87 mm overall assembled width T. The last two digits 56 are the ISO bore code, ×5 = 280 mm (codes 00–03 use the 10/12/15/17 exception table) under the ISO 355 numbering; the 87 mm value printed here is T, the width of the fully assembled cone-plus-cup set, not the inner-ring width alone. The printed contact-angle geometry gives the low-section 32000 family tuned for low friction its characteristic load split — at 1570/2350 kN (C/C0) the static rating is about 1.50× C, typical of tapered bearings proportioned for heavy combined duty. The 5.6 kN-per-mm-bore capacity figure for 32056XUUTG summarises the 1570 kN rating over 280 mm bore; use it to sanity-check an interchange candidate before swapping brands. When pairing 32056XUUTG with a second tapered bearing, keep the matched arrangement clean: a single stray grit particle between cup and housing changes preload faster than the adjustment range can correct.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 280 mm bore the 32056XUUTG 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 1570 kN C level.
• The thin 87 mm section of 32056XUUTG is built for low friction and tight envelopes, not the heavy preload of a 322/323 set; over-tightening adjustment on this 280 mm bore smears the roller ends against the rib.
• Back-to-back and face-to-face arrangements react differently to shaft bending: pick the pair orientation for the moment load before locking the 280 mm shoulder geometry, because retrofitting flips the cups.
• Minimum load matters at high speed: an unloaded 32056XUUTG at a large fraction of 740 r/min lets rollers skid and smear the cone rib; spring-preload lightly loaded pair arrangements.
• Minimum load matters at high speed: an unloaded 32056XUUTG at a large fraction of 740 r/min lets rollers skid and smear the cone rib; spring-preload lightly loaded pair arrangements.
• The 1570/2350 kN ratings and 197 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 32056XUUTG (ISO 355 4FC); internal geometry legitimately differs between manufacturers, so re-verify ratings, adjustment and suffix before substituting another make on a rated drive.