32008T41-5X-DB bearing: complete specifications & equivalents
The 32008T41-5X-DB is a ISO 355 radial bearing sized 40 x 68 x 41.5 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 40 mm |
| Outer diameter D | 68 mm |
| Width B | 41.5 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 111 kN |
| Basic static load rating C0 | 143 kN |
| Fatigue load limit Pu | 15.3 kN |
| Reference speed (thermal) | 6300 rpm |
| Limiting speed (mechanical) | 9500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 580 g |
| Manufacturer designation | SKF 32008T41.5 X/DB |
| 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-db-series range
| Bore d | 1.575 in |
|---|---|
| Outer diameter D | 2.677 in |
| Width B | 1.634 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 14 mm |
| Smallest bore in matched-db-series | 35 mm |
| Largest outer diameter in matched-db-series | 480 mm |
| Width range across matched-db-series | 41.5–288 mm |
| Bore position in matched-db-series (smallest first) | 2 of 30 |
| Bore above smallest matched-db-series size | 5 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32008T41 | 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 32008T41-5X-DB model number is decoded
Numbering ties the set to its envelope: base 32008T41.5 X fixes the 40 mm bore and 68 mm OD of each bearing, the /DB suffix fixes the arrangement and setting, and the catalogue 41.5 mm width is the combined pair dimension. Back-to-back matching puts the large rib ends outward — the stiffest arrangement for moment load, but one that converts shaft thermal growth into preload change; the factory setting of 32008T41-5X-DB already accounts for the expected temperature gradient across the 41.5 mm pair width. Selection arithmetic: the catalogue C 111 kN and C0 143 kN are ratings of the complete pair, not of one bearing — never halve them back to a single-row figure when checking L10 life, and use the pair Pu 15.3 kN as the fatigue floor. Cross-section geometry: the 14.0 mm half-section ((68−40)/2) places the roller pitch diameter near 54 mm, and the 41.5 mm axial width sets the abutment depth — geometry that fixes the contact angle behaviour of 32008T41-5X-DB. Spacer discipline: the spacer between the two bearings of 32008T41-5X-DB is ground to the individual set — it carries a serial link to the pair, so never swap spacers between sets of the same designation. Lubrication for the pair should be sized against the combined 41.5 mm width and 580 g mass: two roller sets sweep twice the contact area of a single bearing of the same bore.For a 40 mm shaft carrying reversing axial load, SKF lists 32008T41-5X-DB under catalogue execution SKF 32008T41.5 X/DB: a factory-matched back-to-back (O) matched pair tapered-roller pair, set and measured as one unit.
Typical equipment & failure modes
Common applications
- belt-driven fan and blower shafts
- axle-boxes in material-handling equipment
- automotive and light-truck wheel hubs
- automotive and light-truck wheel hubs
Known failure patterns
- axial overload spalling at the roller-rib contact beyond the single-row thrust rating
- 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
- O and X arrangements are not interchangeable by turning the set around: 32008T41-5X-DB in back-to-back (O) 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 32008T41-5X-DB concentrates reversing thrust on one bearing and shows up as one-sided raceway wear.
- Replace 32008T41-5X-DB as a complete set: pairing a new bearing with a worn partner leaves the clearance undefined even when the designation matches.
- The 111/143 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 32008T41.5 X/DB designation when purchasing — base-number-only orders are ambiguous across executions and variants.
Frequently asked questions
What are the dimensions and catalogue data of 32008T41-5X-DB?
The SKF 32008T41.5 X/DB is a matched pair of single-row tapered roller bearings in back-to-back (O) matched pair arrangement with 40 mm bore, 68 mm outer diameter and 41.5 mm overall width (1.575 × 2.677 × 1.634 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 111 kN, C0 143 kN, fatigue load limit Pu 15.3 kN, reference speed 6,300 r/min, limiting speed 9,500 r/min, mass about 0.58 kg.
What does the /DB suffix on 32008T41-5X-DB mean?
The base 32008T41.5 X is the ISO 355 single-row bearing; the /DB suffix marks the matched-set execution — the arrangement (back-to-back (O)), 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 32008T41-5X-DB for one bearing or the pair?
They are for the complete matched pair: C 111 kN dynamic and C0 143 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 32008T41.5 X table values.
Can 32008T41-5X-DB 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 40 mm shaft) and axial clamping through the cones; re-setting in the field destroys the matched clearance class.
When should a back-to-back (O) matched set be chosen?
Choose the back-to-back (O) set where moment stiffness dominates — pinion supports, gearbox output shafts, crane sheaves. The diverging load lines give the widest effective spread at the 40 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.