32019X-DF bearing: complete specifications & equivalents
The 32019X-DF is a ISO 355 radial bearing sized 95 x 145 x 64 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 95 mm |
| Outer diameter D | 145 mm |
| Width B | 64 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 353 kN |
| Basic static load rating C0 | 540 kN |
| Fatigue load limit Pu | 61 kN |
| Reference speed (thermal) | 2800 rpm |
| Limiting speed (mechanical) | 4300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 3800 g |
| Manufacturer designation | SKF 32019 X/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 | 3.74 in |
|---|---|
| Outer diameter D | 5.709 in |
| Width B | 2.52 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 25 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) | 15 of 35 |
| Bore above smallest matched-df-series size | 70 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32019X | 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 32019X-DF model number is decoded
Journal and housing interface: the 95 mm bore takes a k5 shaft seat and the 145 mm outside diameter pairs with an H7 housing bore; the 64 mm width defines shoulder depth and the 3800 g mass is the dead load in thermal-growth calculations. Inspection shorthand: at overhaul, mark both bearings and the spacer of 32019X-DF before disassembly — the set is a matched system, and re-assembling with one component reversed changes the factory setting. Lubrication for the pair should be sized against the combined 64 mm width and 3800 g mass: two roller sets sweep twice the contact area of a single bearing of the same bore.32019X-DF (SKF 32019 X/DF) is the face-to-face (X) matched pair matched-set choice for a 95 mm shaft: a pair of tapered roller bearings whose combined envelope is 145×64 mm, delivered ready to mount with controlled internal clearance.Numbering ties the set to its envelope: base 32019 X fixes the 95 mm bore and 145 mm OD of each bearing, the /DF suffix fixes the arrangement and setting, and the catalogue 64 mm width is the combined pair dimension. 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 64 mm overall width of 32019X-DF is the axial space the pair occupies. The C0/C balance of the pair is about 1.53; combined with the 61 kN fatigue limit this frames a set sized for reversing combined load on a 95 mm shaft rather than for pure radial duty.
Typical equipment & failure modes
Common applications
- heavy industrial gearboxes and speed reducers
- large process pump and compressor shafts
- rolling-mill auxiliary drives
- large process pump and compressor shafts
Known failure patterns
- axial overload spalling at the roller-rib contact beyond the single-row thrust rating
- 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
- edge loading from shaft deflection or housing misalignment
Selection pitfalls — read before you substitute
- A matched /DF set is ground as one system: never separate the two bearings of 32019X-DF or swap the spacer — the factory clearance is lost the moment the set is broken.
- Spacer faces must stay parallel within the set's own tolerance; a tilted spacer in 32019X-DF concentrates reversing thrust on one bearing and shows up as one-sided raceway wear.
- Spacer faces must stay parallel within the set's own tolerance; a tilted spacer in 32019X-DF concentrates reversing thrust on one bearing and shows up as one-sided raceway wear.
- The 353/540 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 32019 X/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 32019X-DF?
The SKF 32019 X/DF is a matched pair of single-row tapered roller bearings in face-to-face (X) matched pair arrangement with 95 mm bore, 145 mm outer diameter and 64 mm overall width (3.74 × 5.709 × 2.52 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 353 kN, C0 540 kN, fatigue load limit Pu 61 kN, reference speed 2,800 r/min, limiting speed 4,300 r/min, mass about 3.80 kg.
What does the /DF suffix on 32019X-DF mean?
The base 32019 X 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 32019X-DF for one bearing or the pair?
They are for the complete matched pair: C 353 kN dynamic and C0 540 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 32019 X table values.
Can 32019X-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 95 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 95 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.