32217 bearing: complete specifications & equivalents
The 32217 is a ISO 355 radial bearing sized 85 x 150 x 38.5 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Bore diameter d | 85 mm |
| Outer diameter D | 150 mm |
| Width B | 38.5 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) | 2357 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 32217 are being backfilled — use the inquiry form for certified values.
Dimensions in inches & 32200-series range
| Bore d | 3.346 in |
|---|---|
| Outer diameter D | 5.906 in |
| Width B | 1.516 in |
| ISO bore code | 17 |
| Radial section height (D−d)/2 | 32.5 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) | 14 of 19 |
| Bore above smallest 32200-series size | 65 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32217 | 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 32217 model number is decoded
In the 32200-series the last two digits of 32217 encode the bore: code 17 = 85 mm (code × 5 from 04 upward). The ISO 355 envelope is 150 mm outside diameter and 38.5 mm total assembly width T over the separable cone and cup — 3.346 × 5.906 × 1.516 in, with a 32.5 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 85 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
- crane travel wheels and winch drums
- railway axle boxes
- agricultural tractor axles
- truck and trailer wheel hubs
- heavy final drives and differentials
Known failure patterns
- 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
- under-preload end play that lets the rollers skid, producing noise and false brinelling
Selection pitfalls — read before you substitute
- The large 85 mm-bore 32217 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 85 mm shaft.
- The 322 medium series at 85 mm bore (150×38.5 mm) gains roller length and load over the 30217 on the same OD; the wider 38.5 mm assembly needs a wider housing shoulder and changes the pinion offset in a differential.
- Check the shoulder geometry for 32217: a generous fillet on the 85 mm shaft looks strong but stops the 38.5 mm ring seating home; use the catalogue corner-relief radius and provide a withdrawal groove so the 32.5 mm-section cup presses flush in the 150 mm housing.
- Never fit 32217 by tightening the adjuster to force the cone up the 85 mm taper — draw the nut to seat the rollers, then back it off; the 38.5 mm total width is set by the cup-cone stack, and pushing beyond it is the common cause of seized ribs.
- Inspect the removed 32217 cone and cup as a pair: pitting on the 150 mm cup with a clean cone usually means seal failure and water ingress, while rib scoring on the 85 mm cone points to wrong preload or lost EP film — the two faults need different corrections.
- 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.
- Tapered rollers accept virtually no misalignment; a deflected 85 mm shaft or a tilted housing shoulder concentrates load on one end of the 38.5 mm-wide roller row — align seats and verify housing perpendicularity.
Frequently asked questions
What are the dimensions of a 32217 tapered roller bearing?
A 32217 single-row metric tapered roller bearing per ISO 355 has a 85 mm bore, 150 mm outer diameter and 38.5 mm total assembly width (3.346 × 5.906 × 1.516 in), a 32.5 mm radial section and roughly 2357 g geometry-based estimated mass; catalogue masses vary with roller and cage design.
How does the 32217 bore code work?
The last two digits of 32217 are bore code 17, giving 17 × 5 = 85 mm bore — the same convention as 6xx ball bearings, starting at code 04 (20 mm). The 150 mm OD and 38.5 mm width come from the ISO 355 diameter and width series, not the bore code alone.
What is the cone and cup of 32217?
Tapered roller bearings are separable: the cone is the inner ring with the tapered rollers and cage, the cup is the outer ring. 32217 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 32217 set?
At fit-up the 85 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 85 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 32217 take axial load in both directions?
A single 32217 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.