32219 bearing: complete specifications & equivalents
The 32219 is a ISO 355 radial bearing sized 95 x 170 x 45.5 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Bore diameter d | 95 mm |
| Outer diameter D | 170 mm |
| Width B | 45.5 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) | 3624 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 32219 are being backfilled — use the inquiry form for certified values.
Dimensions in inches & 32200-series range
| Bore d | 3.74 in |
|---|---|
| Outer diameter D | 6.693 in |
| Width B | 1.791 in |
| ISO bore code | 19 |
| Radial section height (D−d)/2 | 37.5 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) | 16 of 19 |
| Bore above smallest 32200-series size | 75 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32219 | 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 32219 model number is decoded
In the 32200-series the last two digits of 32219 encode the bore: code 19 = 95 mm (code × 5 from 04 upward). The ISO 355 envelope is 170 mm outside diameter and 45.5 mm total assembly width T over the separable cone and cup — 3.74 × 6.693 × 1.791 in, with a 37.5 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 95 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
- agricultural tractor axles
- truck and trailer wheel hubs
- heavy final drives and differentials
- large conveyor drum pulleys
- crane travel wheels and winch drums
Known failure patterns
- 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
- water and grit pitting in unsealed hubs where the cup-cone joint acts as a debris entry path
- false brinelling from vibration while the axle is stationary during transport
Selection pitfalls — read before you substitute
- The large 95 mm-bore 32219 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 95 mm shaft.
- The 322 medium series at 95 mm bore (170×45.5 mm) gains roller length and load over the 30219 on the same OD; the wider 45.5 mm assembly needs a wider housing shoulder and changes the pinion offset in a differential.
- Before fitting 32219, machine the 95 mm shaft seat and 170 mm housing bore with a relief or small fillet so nothing bridges the bearing chamfer; the 45.5 mm-wide cone and cup only load correctly when the full faces abut, and a large radius pinches the 37.5 mm radial section.
- The 32219 cup drives into the 170 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 45.5 mm load zone.
- Relubrication for 32219 must reach the rib-roller end contact, not just the 95 mm bore; in a hub repack, work EP grease through the roller set until it exudes at both faces of the 45.5 mm-wide assembly or the sliding rib contact starves first.
- Press the 32219 cone onto the 95 mm shaft with force on the inner ring and the cup into the 170 mm housing on the outer ring; driving through the rollers or transmitting mounting force across the assembly brinells the raceways.
- Do not swap a 32200 row for a ball bearing of the same bore: tapered rollers are heavier, slower (sliding rib contact caps the speed) and must be adjusted, but they outperform ball bearings on combined load and shock in gear and hub duty.
Frequently asked questions
What are the dimensions of a 32219 tapered roller bearing?
A 32219 single-row metric tapered roller bearing per ISO 355 has a 95 mm bore, 170 mm outer diameter and 45.5 mm total assembly width (3.74 × 6.693 × 1.791 in), a 37.5 mm radial section and roughly 3624 g geometry-based estimated mass; catalogue masses vary with roller and cage design.
How does the 32219 bore code work?
The last two digits of 32219 are bore code 19, giving 19 × 5 = 95 mm bore — the same convention as 6xx ball bearings, starting at code 04 (20 mm). The 170 mm OD and 45.5 mm width come from the ISO 355 diameter and width series, not the bore code alone.
What is the cone and cup of 32219?
Tapered roller bearings are separable: the cone is the inner ring with the tapered rollers and cage, the cup is the outer ring. 32219 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 32219 set?
At fit-up the 95 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 95 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 32219 take axial load in both directions?
A single 32219 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.