32220-DF bearing: complete specifications & equivalents
The 32220-DF is a ISO 355 radial bearing sized 100 x 180 x 98 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 100 mm |
| Outer diameter D | 180 mm |
| Width B | 98 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 668 kN |
| Basic static load rating C0 | 880 kN |
| Fatigue load limit Pu | 96.5 kN |
| Reference speed (thermal) | 2400 rpm |
| Limiting speed (mechanical) | 3600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 10000 g |
| Manufacturer designation | SKF 32220/DF |
| Standard | ISO 355 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.3-8.8 TRB variants |
| Last verified | 2026-09-29 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.3-8.8 TRB variants) · extracted 2026-09-29
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.3-8.8 TRB variants); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.
Dimensions in inches & matched-df-series range
| Bore d | 3.937 in |
|---|---|
| Outer diameter D | 7.087 in |
| Width B | 3.858 in |
| ISO bore code | 20 |
| Radial section height (D−d)/2 | 40 mm |
| Smallest bore in matched-df-series | 25 mm |
| Largest outer diameter in matched-df-series | 540 mm |
| Width range across matched-df-series | 34.5–280 mm |
| Bore position in matched-df-series (smallest first) | 16 of 35 |
| Bore above smallest matched-df-series size | 75 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32220 | FAG | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | Model-number interchange per ISO 15; confirm dimensions, sealing and ratings in the supplier catalogue. |
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 32220-DF model number is decoded
Dimensional interchange map: within its boundary plan the 100×180×98 mm envelope of 32220-DF is fixed, so shoulder, spacer and seal drawings can be dimensioned straight from the catalogue table. Inspection shorthand: at overhaul, mark both bearings and the spacer of 32220-DF before disassembly — the set is a matched system, and re-assembling with one component reversed changes the factory setting. Clamp the assembled pair axially through the cones — never through the rollers — and verify the 98 mm overall width against the catalogue value before final torquing of the shaft nut.32220-DF (SKF 32220/DF) is the face-to-face (X) matched pair matched-set choice for a 100 mm shaft: a pair of tapered roller bearings whose combined envelope is 180×98 mm, delivered ready to mount with controlled internal clearance.The code breaks down as base bearing 32220 plus matched-set suffix /DF: two bearings of the 100 mm bore size, paired face-to-face (X) matched pair, with the 98 mm overall width spanning the whole arrangement. Face-to-face matching puts the small rib ends outward, so the pressure cones cross inside the pair; 32220-DF therefore runs cooler where the shaft expands axially, at the price of lower moment stiffness than an O-arrangement of the same 100 mm bore. The C0/C balance of the pair is about 1.32; combined with the 96.5 kN fatigue limit this frames a set sized for reversing combined load on a 100 mm shaft rather than for pure radial duty.
Typical equipment & failure modes
Common applications
- crane sheave and hoist gearboxes
- paper-machine and printing rolls
- construction machinery drives
- paper-machine and printing rolls
Known failure patterns
- uneven load sharing in a pair when spacer faces are not parallel to the bore
- false brinelling on idle paired sets exposed to machine vibration
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- rolling-contact fatigue spalling after the rated L10 life is exceeded
- mounting score marks when the cone is cocked over the shaft keyway or a burr
Selection pitfalls — read before you substitute
- A matched /DF set is ground as one system: never separate the two bearings of 32220-DF or swap the spacer — the factory clearance is lost the moment the set is broken.
- Clamp the 32220-DF pair axially through the cones, never through the rollers; pressing force across the roller complement brinells the raceways of both bearings at once.
- Replace 32220-DF as a complete set: pairing a new bearing with a worn partner leaves the clearance undefined even when the designation matches.
- The 668/880 kN ratings are SKF catalogue 17000 values for this execution; SKF can revise internal geometry without changing the order number, so keep the catalogue version (PUB BU/P1 17000/1 EN, 2018) with the specification.
- Quote the full SKF 32220/DF designation when purchasing — base-number-only orders are ambiguous across executions and variants.
Frequently asked questions
What are the dimensions and catalogue data of 32220-DF?
The SKF 32220/DF is a matched pair of single-row tapered roller bearings in face-to-face (X) matched pair arrangement with 100 mm bore, 180 mm outer diameter and 98 mm overall width (3.937 × 7.087 × 3.858 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 668 kN, C0 880 kN, fatigue load limit Pu 96.5 kN, reference speed 2,400 r/min, limiting speed 3,600 r/min, mass about 10.00 kg.
What does the /DF suffix on 32220-DF mean?
The base 32220 is the ISO 355 single-row bearing; the /DF suffix marks the matched-set execution — the arrangement (face-to-face (X)), the ground spacer and the factory-set axial clearance class. A matched set cannot be assembled from loose single bearings; quote the full designation when ordering.
Are the C and C0 ratings of 32220-DF for one bearing or the pair?
They are for the complete matched pair: C 668 kN dynamic and C0 880 kN static already include load sharing between the two bearings. Do not halve them for single-bearing checks, and do not compare them directly with the single-row 32220 table values.
Can 32220-DF be adjusted like two loose tapered bearings?
No — the axial clearance is set at the factory by selective spacer grinding. Mounting work is limited to clean seats, correct fits (k5 on a rotating 100 mm shaft) and axial clamping through the cones; re-setting in the field destroys the matched clearance class.
When should a face-to-face (X) matched set be chosen?
Choose the face-to-face (X) set where the shaft grows thermally or alignment is imperfect — the converging load lines tolerate deflection. It is the default choice for wheel hubs and general gearbox shafts at the 100 mm bore.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.3-8.8 TRB variants on 2026-09-29. Read our editorial & correction policy.