32010 bearing: complete specifications & equivalents
The 32010 is a ISO 355 radial bearing sized 50 x 80 x 20 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | FAG |
| Bore diameter d | 50 mm |
| Outer diameter D | 80 mm |
| Width B | 20 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 75 kN |
| Basic static load rating C0 | 94 kN |
| Fatigue load limit Pu | 14.9 kN |
| Reference speed (thermal) | 4950 rpm |
| Limiting speed (mechanical) | 10500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 385 g |
| Manufacturer designation | 32010-X-XL |
| Standard | ISO 355 |
| Catalog version | Schaeffler HR1 (2022 ed.), Tapered roller bearings DIN/ISO 355 |
| Last verified | 2026-09-26 |
Source: catalog reference (Schaeffler HR1 (2022 ed.), Tapered roller bearings DIN/ISO 355) · extracted 2026-09-26
Parameters extracted from the official FAG Rolling Bearings catalogue (Schaeffler HR1 (2022 ed.), Tapered roller bearings DIN/ISO 355); FAG® is a trademark of Schaeffler Technologies AG & Co. KG, used here for identification only — mpnbase is not an authorized FAG/Schaeffler distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at schaeffler.com.
Dimensions in inches & 32000-series range
| Bore d | 1.969 in |
|---|---|
| Outer diameter D | 3.15 in |
| Width B | 0.787 in |
| ISO bore code | 10 |
| Radial section height (D−d)/2 | 15 mm |
| Smallest bore in 32000-series | 20 mm |
| Largest outer diameter in 32000-series | 650 mm |
| Width range across 32000-series | 15–130 mm |
| Bore position in 32000-series (smallest first) | 10 of 43 |
| Bore above smallest 32000-series size | 30 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32010 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; standard interchange — confirm clearance class and precision with the supplier. |
| 32010-SKF | SKF | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
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 32010 model number is decoded
In Schaeffler HR1 (2022 edition), 32010 appears as 32010-X-XL: an open, single-row tapered roller bearing in the low-friction section of the 32000 dimension series, supplied with a pressed-steel cage as standard.Digit by digit, 32010 reads as bearing type 3 (single-row tapered roller), low-friction section series 2, and bore reference 10 resolving to 50 mm; 80 mm OD and 20 mm width are the matching ISO 355 boundary values. In Schaeffler notation 32010-X-XL is the basic X-life execution; B-suffix variants have a steeper contact angle and are not interchangeable with the base bearing. Speed planning uses two different ceilings: 4,950 r/min thermal reference and 10,500 r/min mechanical limiting speed. For a 50 mm shaft the usual cone seat is k5 with an H7 housing when the inner ring rotates; arrange two 32010 bearings as a set for two-direction location and set clearance from the load diagram, never from assembly feel.
Typical equipment & failure modes
Common applications
- industrial gearbox shafts and reducers
- differential and pinion drives
- pump and compressor shafts
- machine-tool spindles
Known failure patterns
- cup or cone misalignment when the separable rings are not seated square during mounting
- loose cup rotation in the housing when the specified press fit is not achieved
- false brinelling on idle paired sets exposed to machine vibration
- roller large-end smearing against the cone rib after EP lubricant film failure
- cage pocket scoring when the bearing starts cold with grease of too-high base-oil viscosity
- fretting corrosion on a loose rotating shaft seat
Selection pitfalls — read before you substitute
- On this 50 mm bore, interference and temperature rise consume clearance inside a preloaded pair; calculate the residual clearance after mounting and at operating temperature — an over-tight 32010 pair heats, loses setting control and smears the roller-rib contact.
- The 320 series at 50 mm bore (80×20 mm) is the low-friction, higher-speed section; it carries less thrust than a 30210 of the same bore, so verify the axial load share before swapping.
- At the 75 kN rating of 32010, preload class changes stiffness by tens of percent but also heat generation; select light preload for the 10,500 r/min speed end and heavier preload only where moment stiffness dominates.
- When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of 32010 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
- Catalogue reference speed and limiting speed are different limits: the 4,950 r/min reference is a thermal criterion under load, while the 10,500 r/min limiting value is the mechanical ceiling — observe both.
- The 75/94 kN ratings are Schaeffler HR1 values for the X-life execution; the -XL suffix denotes the premium grade and is part of the order designation, so quote it in full when purchasing.
- Schaeffler lists 32010 in the X-life basic execution; variant executions with -B or other suffixes are separate order numbers and are not interchangeable with the basic X-life bearing.
Frequently asked questions
What are the dimensions and catalogue data of 32010?
The 32010-X-XL is a single-row tapered roller bearing with 50 mm bore, 80 mm outer diameter and 20 mm width (1.969 × 3.15 × 0.787 in) per ISO 355. From Schaeffler HR1 (2022 edition): basic dynamic load rating C 75 kN, C0 94 kN, fatigue load limit Pu 14.9 kN, reference speed 4,950 r/min, limiting speed 10,500 r/min, mass about 385 g. It is an open, separable bearing with a pressed-steel cage.
How does the 32010 bore code work?
The last two digits of 32010 are bore code 10, so 10 × 5 = 50 mm bore. The 80 mm OD and 20 mm width come from the ISO 355 dimension-series plan, shared with other tapered bearings of the same code.
What do the 32010 series and X-life execution designations mean?
The leading 3 marks a single-row tapered roller bearing; the second digit 2 is the ISO 355 series (low-friction section). The FAG -XL suffix denotes X-life premium grade; the ISO 355 series code is interchangeable with other brands. A steeper-contact-angle variant (B suffix) is a different order number and is not interchangeable with the basic execution.
Can a single 32010 take axial load in both directions?
No — one single-row tapered roller bearing reacts thrust in one direction only, and under radial load its contact angle induces an axial force. Use two bearings as a matched pair: O (back-to-back) for a rigid, moment-resisting arrangement, X (face-to-face) where thermal expansion must be tolerated, or tandem where one-direction thrust is shared.
How does 32010 compare with a ball bearing of the same bore?
A tapered roller bearing has line contact and a steep contact angle: much higher combined axial-plus-radial capacity and shock resistance than a ball bearing of the same bore, at the cost of speed, one-direction thrust, mandatory pairing for reversing loads and a minimum axial load requirement. A ball bearing cannot be dropped into a combined-load 32010 position and vice versa — verify load direction, Fa/Fr ratio and speed before substituting.
Reviewed & verified by the MPN Base engineering desk against source catalog Schaeffler HR1 (2022 ed.), Tapered roller bearings DIN/ISO 355 on 2026-09-26. Read our editorial & correction policy.