32244UTG 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 32244UTG model number is decoded

The NTN 2203E table prints 32244UTG in the heavy-section 32200 family: 220 mm bore, 400 mm cup OD, 114 mm T, with a grease limiting speed of 840 r/min and an oil-lubricated ceiling of 1,200 r/min. The last two digits 44 are the ISO bore code, ×5 = 220 mm (codes 00–03 use the 10/12/15/17 exception table) under the ISO 355 numbering; the 114 mm value printed here is T, the width of the fully assembled cone-plus-cup set, not the inner-ring width alone. Suffix reading on 32244UTG: the UTG suffix marks the ULTAGE specification for large NTN tapered rollers — upgraded material and internal design for longer life inside the unchanged ISO 355 envelope; the suffix is part of the order number and the variants are not interchangeable articles. Speed planning uses both catalogue columns: grease 840 r/min is the cage/rib mechanical ceiling for 32244UTG, oil 1,200 r/min is available with circulating oil — a 360 r/min margin at this size. Mount the 220 mm-bore cone on the shaft first (induction heat, max 120 °C), fit the cup square in its housing, then set preload or end play; never drive the cup home through the rollers of 32244UTG.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 220 mm bore the 32244UTG 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 1780 kN C level.
• The heavy-section 32200 family at 220 mm bore (400×114 mm assembled) carries more capacity than the lighter 320/329 sections but generates more preload heat; confirm oil availability before running near the 1,200 r/min oil ceiling.
• Replacing one half of an adjusted pair without resetting end play negates the 114 mm T dimension logic: re-adjust the set and re-verify the contact pattern rather than reusing the old spacer stack.
• ISO 355 makes the 220×400 mm envelope interchangeable but not the ratings: NTN prints 1780/2410 kN for this execution, and a cheaper same-number part can differ in roller complement and steel.
• ISO 355 makes the 220×400 mm envelope interchangeable but not the ratings: NTN prints 1780/2410 kN for this execution, and a cheaper same-number part can differ in roller complement and steel.
• The 1780/2410 kN ratings and 209 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 32244UTG; internal geometry legitimately differs between manufacturers, so re-verify ratings, adjustment and suffix before substituting another make on a rated drive.