32005 bearing: complete specifications & equivalents
The 32005 is a ISO 355 radial bearing sized 25 x 47 x 15 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | FAG |
| Bore diameter d | 25 mm |
| Outer diameter D | 47 mm |
| Width B | 15 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 31.5 kN |
| Basic static load rating C0 | 34 kN |
| Fatigue load limit Pu | 4.8 kN |
| Reference speed (thermal) | 9000 rpm |
| Limiting speed (mechanical) | 18900 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 117 g |
| Manufacturer designation | 32005-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 | 0.984 in |
|---|---|
| Outer diameter D | 1.85 in |
| Width B | 0.591 in |
| ISO bore code | 05 |
| Radial section height (D−d)/2 | 11 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) | 3 of 43 |
| Bore above smallest 32000-series size | 5 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32005 | 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. |
| 32005-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 32005 model number is decoded
For a 25 mm shaft carrying combined load, FAG lists 32005 under catalogue execution 32005-X-XL: one open single-row tapered roller bearing in the low-friction section of the 32000 family.The code breaks down as type prefix 3 (tapered roller), series 2 (the low-friction section), and bore code 05 = 25 mm; dimensions 25×47×15 mm therefore match the ISO 355 envelope. In Schaeffler notation 32005-X-XL is the basic X-life execution; B-suffix variants have a steeper contact angle and are not interchangeable with the base bearing. With C 31.5 kN and C0 34 kN, the 32005 pair-sizing check is dominated by the axial share: keep the equivalent load P below the rating at the required L10, remembering one bearing alone cannot cover reversing thrust at 18,900 r/min. Because the contact line is tapered, one 32005 reacts thrust in a single direction; bidirectional shafts need an O or X pair, and a rotating cone on a 25 mm shaft typically takes a k5 seat with an H7 housing bore.
Typical equipment & failure modes
Common applications
- steering knuckles and small differentials
- agricultural implement hubs
- small conveyor drive pulleys
- power-tool gear heads
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
- preload loss as the mounted pair relaxes, letting rollers skid and smear the raceways
- axial overload spalling at the roller-rib contact beyond the single-row thrust rating
- cage pocket scoring when the bearing starts cold with grease of too-high base-oil viscosity
- electrical pitting on VFD-driven shafts without grounding protection
Selection pitfalls — read before you substitute
- At a 25 mm bore the thin cone and cup are easily distorted by an over-tight shaft nut; check seat runout (target Ra ≤ 0.8 µm) and torque the locknut progressively — a pinched 32005 shows up as gearbox vibration long before it fails.
- The 320 series at 25 mm bore (47×15 mm) is the low-friction, higher-speed section; it carries less thrust than a 30205 of the same bore, so verify the axial load share before swapping.
- O (back-to-back) pairs are stiffer against moments, X (face-to-face) pairs tolerate misalignment and thermal growth better; choosing the arrangement from the 2D drawing rather than the actual shaft thermal expansion is a common 32005 mounting error.
- Setting is a design value, not an assembly feel: excessive preload in the 32005 pair raises operating temperature and can trigger thermal runaway, while too little lets the rollers skid and smear the raceway under light load.
- Catalogue reference speed and limiting speed are different limits: the 9,000 r/min reference is a thermal criterion under load, while the 18,900 r/min limiting value is the mechanical ceiling — observe both.
- The 31.5/34 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 32005 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 32005?
The 32005-X-XL is a single-row tapered roller bearing with 25 mm bore, 47 mm outer diameter and 15 mm width (0.984 × 1.85 × 0.591 in) per ISO 355. From Schaeffler HR1 (2022 edition): basic dynamic load rating C 31.5 kN, C0 34 kN, fatigue load limit Pu 4.8 kN, reference speed 9,000 r/min, limiting speed 18,900 r/min, mass about 117 g. It is an open, separable bearing with a pressed-steel cage.
How does the 32005 bore code work?
The last two digits of 32005 are bore code 05, so 05 × 5 = 25 mm bore. The 47 mm OD and 15 mm width come from the ISO 355 dimension-series plan, shared with other tapered bearings of the same code.
What do the 32005 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 32005 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 32005 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 32005 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.