32324-DF bearing: complete specifications & equivalents
The 32324-DF is a ISO 355 radial bearing sized 120 x 260 x 181 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 120 mm |
| Outer diameter D | 260 mm |
| Width B | 181 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 1466 kN |
| Basic static load rating C0 | 2240 kN |
| Fatigue load limit Pu | 220 kN |
| Reference speed (thermal) | 1600 rpm |
| Limiting speed (mechanical) | 2600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 45000 g |
| Manufacturer designation | SKF 32324/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 | 4.724 in |
|---|---|
| Outer diameter D | 10.236 in |
| Width B | 7.126 in |
| ISO bore code | 24 |
| Radial section height (D−d)/2 | 70 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) | 19 of 35 |
| Bore above smallest matched-df-series size | 95 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32324 | 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 32324-DF model number is decoded
Speed planning for the set uses the catalogue pair values: 1,600 r/min thermal reference and 2,600 r/min mechanical limiting speed — a matched pair runs warmer than one bearing because two roller sets share the 181 mm space. Cross-section geometry: the 70.0 mm half-section ((260−120)/2) places the roller pitch diameter near 190 mm, and the 181 mm axial width sets the abutment depth — geometry that fixes the contact angle behaviour of 32324-DF. When a matched /DF set like 32324-DF is replaced, replace the whole set: mixing a new bearing with a worn partner from the old set leaves the clearance and load sharing of the pair undefined. Lubrication for the pair should be sized against the combined 181 mm width and 45000 g mass: two roller sets sweep twice the contact area of a single bearing of the same bore.SKF 32324/DF belongs to the SKF matched tapered-roller range — the 120 mm bore entry in face-to-face (X) matched pair arrangement, dimensioned 260 mm OD and 181 mm overall width for the pair.Digit by digit, 32324-DF reads as the ISO 355 base bearing 32324 supplied as a face-to-face (X) matched pair matched pair (/DF); the 120 mm bore and 260 mm OD are per-bearing, the 181 mm width is for the set. Face-to-face matching puts the small rib ends outward, so the pressure cones cross inside the pair; 32324-DF therefore runs cooler where the shaft expands axially, at the price of lower moment stiffness than an O-arrangement of the same 120 mm bore.
Typical equipment & failure modes
Common applications
- wind-turbine main shafts
- marine propulsion gearboxes
- large industrial mixer shafts
- large crusher and mineral-processing drives
Known failure patterns
- false brinelling on idle paired sets exposed to machine vibration
- false brinelling on idle paired sets exposed to machine vibration
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- hard-particle indentation of the tapered raceway in unfiltered oil
- mounting score marks when the cone is cocked over the shaft keyway or a burr
Selection pitfalls — read before you substitute
- O and X arrangements are not interchangeable by turning the set around: 32324-DF in face-to-face (X) matched pair arrangement has its load-line geometry fixed — specify the arrangement from the shaft thermal and stiffness analysis.
- Spacer faces must stay parallel within the set's own tolerance; a tilted spacer in 32324-DF concentrates reversing thrust on one bearing and shows up as one-sided raceway wear.
- O and X arrangements are not interchangeable by turning the set around: 32324-DF in face-to-face (X) matched pair arrangement has its load-line geometry fixed — specify the arrangement from the shaft thermal and stiffness analysis.
- The 1466/2240 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 32324/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 32324-DF?
The SKF 32324/DF is a matched pair of single-row tapered roller bearings in face-to-face (X) matched pair arrangement with 120 mm bore, 260 mm outer diameter and 181 mm overall width (4.724 × 10.236 × 7.126 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 1466 kN, C0 2240 kN, fatigue load limit Pu 220 kN, reference speed 1,600 r/min, limiting speed 2,600 r/min, mass about 45.00 kg.
What does the /DF suffix on 32324-DF mean?
The base 32324 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 32324-DF for one bearing or the pair?
They are for the complete matched pair: C 1466 kN dynamic and C0 2240 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 32324 table values.
Can 32324-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 (m6 on a rotating 120 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 120 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.