936-932 bearing: complete specifications & equivalents
The 936-932 is a ANSI ABMA 19.2 radial bearing sized 107.95 x 212.725 x 66.675 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 107.95 mm |
| Outer diameter D | 212.725 mm |
| Width B | 66.675 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 525 kN |
| Basic static load rating C0 | 695 kN |
| Limiting speed (mechanical) | 1800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 10700 g |
| Manufacturer designation | NTN 4T-936/932 |
| Standard | ANSI ABMA 19.2 |
| Catalog version | NTN 2203E 2026-09-25 |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN 2203E 2026-09-25) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN 2203E 2026-09-25); 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.
Dimensions in inches & 4t-inch-series range
| Bore d | 4.25 in |
|---|---|
| Outer diameter D | 8.375 in |
| Width B | 2.625 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 52.4 mm |
| Smallest bore in 4t-inch-series | 12.7 mm |
| Largest outer diameter in 4t-inch-series | 260 mm |
| Width range across 4t-inch-series | 10.998–77.788 mm |
| Bore position in 4t-inch-series (smallest first) | 121 of 148 |
| Bore above smallest 4t-inch-series size | 95.25 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 936 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
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 936-932 model number is decoded
In NTN Ball and Roller Bearings CAT.No.2203E, the order number 4T-936/932 denotes the pure-numeric inch family of NTN inch tapered roller bearings — cone 936 and cup 932 delivered as a matched, separable pair of 107.95 mm bore and 212.725 mm outside diameter. The 4T prefix is NTN's tapered roller quality mark stamped on both parts; it is a brand mark, not a size code, so cross-references quote 936/932 without it. Contact-angle geometry of the pure-numeric inch family gives 4T-936/932 its radial/axial load split — at 525/695 kN the static rating is about 1.32× C, typical of inch tapered sets proportioned for combined duty. Cup-side note for 932: within the pure-numeric inch family tables the 936 cone is listed against several cup options, and it is the cup that fixes the 212.725 mm OD and the 66.675 mm assembled width — quote the full 936/932 pair, never the cone alone. Minimum load matters at speed: an unloaded 4T-936/932 run near 1,800 r/min lets the rollers skid; lightly spring-preload high-speed pair arrangements.
Typical equipment & failure modes
Common applications
- off-highway and forestry machine axles
- marine winch and deck-machinery shafts
- crusher and screening-plant eccentric shafts
- heavy truck and bus drive-axle differentials
Known failure patterns
- cone-rib and roller large-end smearing when the adjusted pair runs with preload but starved lubricant film
- cup creep and housing fretting when the cup seat is cut too loose for the rotating load
- flaking on one cone only when a bent shaft loads the O/X pair unevenly
- pressed-steel cage pocket wear from roller skid at light radial load and high speed
- rolling-contact fatigue spalling after the catalogue L10 life at the actual combined load
Selection pitfalls — read before you substitute
- Mount the 107.95 mm cone by induction heating (max 120 °C) and the 212.725 mm cup with a press sleeve; at 10700 g a cocked ring brinells the raceway directly.
- The pure-numeric inch family at 107.95 mm bore (212.725×66.675 mm assembled) is one of several inch families sharing similar bores; cross-series swaps change OD, T and contact angle, so match the full 936/932 reference at purchase.
- Inch and metric bores collide on paper — 107.95 mm is 4.25 in, not a round metric size; a metric bearing that seems 0.1 mm off will not seat on the inch shaft.
- Grease packs must leave free volume inside the 66.675 mm-wide set; over-greasing a pair churning near the oil-band speed of 2,300 r/min raises temperature and destroys the setting.
- An unloaded 4T-936/932 near 1,800 r/min lets rollers skid and smear the cone rib; spring-preload lightly loaded high-speed pairs.
- The 525/695 kN ratings here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-936/932; internal geometry legitimately differs between inch-series makers, so re-verify ratings, adjustment and the exact cone/cup references before substituting another brand on a rated drive.
Frequently asked questions
What are the dimensions and catalogue ratings of NTN 4T-936/932?
4T-936/932 is an inch-series single-row tapered roller bearing to the ABMA boundary plan: 107.95 mm bore (4.25 in), 212.725 mm outside diameter and 66.675 mm assembled width T (8.375 × 2.625 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 525 kN, C0 695 kN, grease limiting speed 1,800 r/min, oil speed 2,300 r/min, mass about 10700 g. It is an open, separable cone/cup set with a pressed-steel cage.
Are the cone and cup of 4T-936/932 interchangeable separately?
Yes — ABMA inch parts are individually interchangeable: the 936 cone or the 932 cup can be replaced by an identical reference from NTN or another ABMA-dimensioned maker. Pairing the cone with a different cup reference is a different catalogue row: OD, assembled T and the 525/695 kN ratings change with the cup.
What is the difference between 4T-936/932 and a metric ISO 355 tapered bearing?
4T-936/932 follows the ABMA inch boundary plan with cone/cup references; ISO 355 bearings use metric dimension-series numbers (302, 322, …). Even where a metric size looks close to 107.95×212.725×66.675 mm, the envelopes and contact angles differ — the two systems are not drop-in interchangeable; check every boundary value before substituting.
What does the 4T prefix on 4T-936/932 mean?
4T is NTN's tapered roller bearing quality mark, stamped on cone and cup in the factory. It identifies NTN's 4T programme and is not a dimension or variant code, so interchange lists quote the bare 936/932 references; the 4T spelling is retained among this page's search aliases.
Why does 4T-936/932 list two speeds, 1,800 and 2,300 r/min?
The lower figure, 1,800 r/min, is the grease-lubricated limiting speed — the mechanical ceiling for the cage, rollers and cone-rib contact. With oil lubrication NTN rates 4T-936/932 at 2,300 r/min because oil removes rib-contact heat better. Real limits still depend on pair adjustment, oil flow and cooling.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN 2203E 2026-09-25 on 2026-10-01. Read our editorial & correction policy.