32217-DF bearing: complete specifications & equivalents
The 32217-DF is a ISO 355 radial bearing sized 85 x 150 x 77 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 85 mm |
| Outer diameter D | 150 mm |
| Width B | 77 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 451 kN |
| Basic static load rating C0 | 570 kN |
| Fatigue load limit Pu | 65.5 kN |
| Reference speed (thermal) | 2800 rpm |
| Limiting speed (mechanical) | 4300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 5400 g |
| Manufacturer designation | SKF 32217/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 | 3.346 in |
|---|---|
| Outer diameter D | 5.906 in |
| Width B | 3.031 in |
| ISO bore code | 17 |
| Radial section height (D−d)/2 | 32.5 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) | 13 of 35 |
| Bore above smallest matched-df-series size | 60 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32217 | 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 32217-DF model number is decoded
The code breaks down as base bearing 32217 plus matched-set suffix /DF: two bearings of the 85 mm bore size, paired face-to-face (X) matched pair, with the 77 mm overall width spanning the whole arrangement. In the face-to-face (X) arrangement the load lines of the two bearings converge toward the shaft axis: the set tolerates shaft deflection and thermal growth better than a back-to-back pair, but is less stiff against overturning moments. The 77 mm overall width of 32217-DF is the axial space the pair occupies. Catalogue mass 5400 g covers both bearings and the ground spacer of 32217-DF; keep the set complete — substituting one bearing or a non-ground spacer destroys the factory clearance. Journal and housing interface: the 85 mm bore takes a k5 shaft seat and the 150 mm outside diameter pairs with an H7 housing bore; the 77 mm width defines shoulder depth and the 5400 g mass is the dead load in thermal-growth calculations. Mounting order matters for 32217-DF: seat the first bearing, fit the ground spacer, then the second bearing, and clamp axially as a unit — the 77 mm catalogue width is the assembled result and the gauge for correct assembly. The rotating cones of 32217-DF take a k5 seat on the 85 mm shaft; the cups are a transition-to-loose fit so the pair can be clamped to its factory setting during assembly.SKF 32217/DF belongs to the SKF matched tapered-roller range — the 85 mm bore entry in face-to-face (X) matched pair arrangement, dimensioned 150 mm OD and 77 mm overall width for the pair.
Typical equipment & failure modes
Common applications
- marine deck machinery shafts
- heavy industrial gearboxes and speed reducers
- large process pump and compressor shafts
- large process pump and compressor shafts
Known failure patterns
- preload loss as the mounted pair relaxes, letting rollers skid and smear the raceways
- thermal preload runaway in an O-arrangement pair when inner-ring heat expands the setting
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- electrical pitting on VFD-driven shafts without grounding protection
- hard-particle indentation of the tapered raceway in unfiltered oil
Selection pitfalls — read before you substitute
- Replace 32217-DF as a complete set: pairing a new bearing with a worn partner leaves the clearance undefined even when the designation matches.
- Spacer faces must stay parallel within the set's own tolerance; a tilted spacer in 32217-DF concentrates reversing thrust on one bearing and shows up as one-sided raceway wear.
- Replace 32217-DF as a complete set: pairing a new bearing with a worn partner leaves the clearance undefined even when the designation matches.
- The 451/570 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 32217/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 32217-DF?
The SKF 32217/DF is a matched pair of single-row tapered roller bearings in face-to-face (X) matched pair arrangement with 85 mm bore, 150 mm outer diameter and 77 mm overall width (3.346 × 5.906 × 3.031 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 451 kN, C0 570 kN, fatigue load limit Pu 65.5 kN, reference speed 2,800 r/min, limiting speed 4,300 r/min, mass about 5.40 kg.
What does the /DF suffix on 32217-DF mean?
The base 32217 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 32217-DF for one bearing or the pair?
They are for the complete matched pair: C 451 kN dynamic and C0 570 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 32217 table values.
Can 32217-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 85 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 85 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.