32216 bearing: complete specifications & equivalents
The 32216 is a ISO 355 radial bearing sized 80 x 140 x 35.25 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Bore diameter d | 80 mm |
| Outer diameter D | 140 mm |
| Width B | 35.25 mm |
| Seal / shield | open |
| Internal clearance | CN available |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Operating temperature | -30 to +120 °C |
| Mass (geometry estimate) | 1865 g |
| Standard | ISO 355 |
| Catalog version | iso355-geometry |
| Last verified | 2026-09-24 |
Source: ISO 15 boundary-dimensions standard · extracted 2026-09-24
Standard-interchange bearing: dimensions per ISO 15; CN clearance, P0 tolerance and a stamped-steel cage are catalogue defaults unless the supplier states otherwise, and mass is a geometry-derived estimate. Brand catalogue load ratings and limiting speeds for 32216 are being backfilled — use the inquiry form for certified values.
Dimensions in inches & 32200-series range
| Bore d | 3.15 in |
|---|---|
| Outer diameter D | 5.512 in |
| Width B | 1.388 in |
| ISO bore code | 16 |
| Radial section height (D−d)/2 | 30 mm |
| Smallest bore in 32200-series | 20 mm |
| Largest outer diameter in 32200-series | 200 mm |
| Width range across 32200-series | 19–56 mm |
| Bore position in 32200-series (smallest first) | 13 of 19 |
| Bore above smallest 32200-series size | 60 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32216 | 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 32216 model number is decoded
In the 32200-series the last two digits of 32216 encode the bore: code 16 = 80 mm (code × 5 from 04 upward). The ISO 355 envelope is 140 mm outside diameter and 35.25 mm total assembly width T over the separable cone and cup — 3.15 × 5.512 × 1.388 in, with a 30.0 mm radial section height. Tapered rollers carry combined radial and single-direction axial load; bidirectional thrust needs an opposed pair (X face-to-face or O back-to-back) adjusted at fit-up. With a rotating cone on a 80 mm shaft, typical catalogue practice is a k5 shaft seat with an H7 housing bore, EP lubrication and a defined end-play setting — verify against the load direction and magnitude.
Typical equipment & failure modes
Common applications
- large conveyor drum pulleys
- crane travel wheels and winch drums
- railway axle boxes
- agricultural tractor axles
- truck and trailer wheel hubs
Known failure patterns
- fretting corrosion on a loose shaft seat when the cone is pressed to an interference that relaxes with wear
- cup creep and housing bore fretting when the outer ring is left without its specified press fit
- roller large-end smearing and scoring against the inner-ring guide rib from loss of the EP lubricant film
- raceway spalling at the roller-rib junction after the L10 life or sustained axial overload
- over-preload heat: a shim stack cut too thin drives contact stress up and seizes the cone on the seat
Selection pitfalls — read before you substitute
- The large 80 mm-bore 32216 develops substantial mounting forces; heat the cone (induction heater, max 120 °C) and never tighten the adjusting nut to seat it — draw it up by torque, then back off to the mark, leaving roughly 0.05–0.20 mm end play on the 80 mm shaft.
- The 322 medium series at 80 mm bore (140×35.25 mm) gains roller length and load over the 30216 on the same OD; the wider 35.25 mm assembly needs a wider housing shoulder and changes the pinion offset in a differential.
- Before fitting 32216, machine the 80 mm shaft seat and 140 mm housing bore with a relief or small fillet so nothing bridges the bearing chamfer; the 35.25 mm-wide cone and cup only load correctly when the full faces abut, and a large radius pinches the 30.0 mm radial section.
- The 32216 cup drives into the 140 mm housing bore with a sleeve against its outer face only; pressure on the inner ring or cage transfers through the rollers and leaves indentations that become spalls within the 35.25 mm load zone.
- Relubrication for 32216 must reach the rib-roller end contact, not just the 80 mm bore; in a hub repack, work EP grease through the roller set until it exudes at both faces of the 35.25 mm-wide assembly or the sliding rib contact starves first.
- Set running clearance (or preload) with the shim pack or adjusting nut at fit-up; a 80 mm-bore 32216 that is too tight overheats and scores the rib, one too loose develops end play and noise — follow the torque-and-untighten procedure.
- The sliding contact between roller large ends and the inner-ring rib needs extreme-pressure lubricant; use an EP gear oil or EP grease (GL-5 class in axles) rather than plain bearing grease or the rib will smear in the first heavy run.
Frequently asked questions
What are the dimensions of a 32216 tapered roller bearing?
A 32216 single-row metric tapered roller bearing per ISO 355 has a 80 mm bore, 140 mm outer diameter and 35.25 mm total assembly width (3.15 × 5.512 × 1.388 in), a 30.0 mm radial section and roughly 1865 g geometry-based estimated mass; catalogue masses vary with roller and cage design.
How does the 32216 bore code work?
The last two digits of 32216 are bore code 16, giving 16 × 5 = 80 mm bore — the same convention as 6xx ball bearings, starting at code 04 (20 mm). The 140 mm OD and 35.25 mm width come from the ISO 355 diameter and width series, not the bore code alone.
What is the cone and cup of 32216?
Tapered roller bearings are separable: the cone is the inner ring with the tapered rollers and cage, the cup is the outer ring. 32216 denotes a matched cone-and-cup set. They are fitted separately — cone pressed on the shaft, cup in the housing — and adjusted against each other.
How is the preload or clearance of 32216 set?
At fit-up the 80 mm-bore cone is tightened against the cup while the hub is rotated, seated, then backed off to the specified end play — a typical starting range of 0.05–0.20 mm for a 80 mm bore — and locked with shims, a locknut or a spacer. Too tight overheats and seizes the rib; too loose causes skid, noise and early wear. Confirm the exact figure in the hub or axle-maker procedure.
Can 32216 take axial load in both directions?
A single 32216 takes thrust in one direction only — the roller large ends bear against the inner-ring rib under load. Bidirectional axial load requires an opposed pair: X (face-to-face) tolerates misalignment slightly better, O (back-to-back) gives a wider load centre and more moment stiffness.
Reviewed & verified by the MPN Base engineering desk against source catalog iso355-geometry on 2026-09-24. Read our editorial & correction policy.