32012T65X-DB bearing: complete specifications & equivalents
The 32012T65X-DB is a ISO 355 radial bearing sized 60 x 95 x 65 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 60 mm |
| Outer diameter D | 95 mm |
| Width B | 65 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 173 kN |
| Basic static load rating C0 | 245 kN |
| Fatigue load limit Pu | 27 kN |
| Reference speed (thermal) | 4300 rpm |
| Limiting speed (mechanical) | 6700 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1450 g |
| Manufacturer designation | SKF 32012T65 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 | 2.362 in |
|---|---|
| Outer diameter D | 3.74 in |
| Width B | 2.559 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 17.5 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) | 6 of 30 |
| Bore above smallest matched-db-series size | 25 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32012T65X | 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 32012T65X-DB model number is decoded
The C0/C balance of the pair is about 1.42; combined with the 27 kN fatigue limit this frames a set sized for reversing combined load on a 60 mm shaft rather than for pure radial duty. Cross-section geometry: the 17.5 mm half-section ((95−60)/2) places the roller pitch diameter near 77 mm, and the 65 mm axial width sets the abutment depth — geometry that fixes the contact angle behaviour of 32012T65X-DB. Mounting order matters for 32012T65X-DB: seat the first bearing, fit the ground spacer, then the second bearing, and clamp axially as a unit — the 65 mm catalogue width is the assembled result and the gauge for correct assembly. A matched /DB set needs no setting adjustment at mounting: the clearance is built in; the assembler's job is clean seats, correct fits (k5 on a 60 mm rotating shaft) and square abutments.32012T65X-DB (SKF 32012T65 X/DB) is the back-to-back (O) matched pair matched-set choice for a 60 mm shaft: a pair of tapered roller bearings whose combined envelope is 95×65 mm, delivered ready to mount with controlled internal clearance.On the SKF nameplate, 32012T65X-DB reads as base 32012T65 X in a /DB matched execution — the suffix is part of the order number because a matched set is ground for a specific axial clearance and cannot be assembled from loose single bearings. In the back-to-back (O) arrangement the load lines diverge toward the shaft axis, giving the pair a wide effective spread: 32012T65X-DB resists overturning moments and tilting loads stiffly, which is why O-sets are preferred for gearbox output shafts and pinion supports.
Typical equipment & failure modes
Common applications
- paper-machine and printing rolls
- construction machinery drives
- marine deck machinery shafts
- crane sheave and hoist gearboxes
Known failure patterns
- thermal preload runaway in an O-arrangement pair when inner-ring heat expands the setting
- preload loss as the mounted pair relaxes, letting rollers skid and smear the raceways
- cage pocket scoring when the bearing starts cold with grease of too-high base-oil viscosity
- brinelling from pressing the cone or cup home through the rollers
- brinelling from pressing the cone or cup home through the rollers
Selection pitfalls — read before you substitute
- Spacer faces must stay parallel within the set's own tolerance; a tilted spacer in 32012T65X-DB concentrates reversing thrust on one bearing and shows up as one-sided raceway wear.
- Setting is built into 32012T65X-DB; the classic field error is re-adjusting a matched pair as if it were two loose single bearings, which destroys the /DB clearance class.
- Replace 32012T65X-DB as a complete set: pairing a new bearing with a worn partner leaves the clearance undefined even when the designation matches.
- The 173/245 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 32012T65 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 32012T65X-DB?
The SKF 32012T65 X/DB is a matched pair of single-row tapered roller bearings in back-to-back (O) matched pair arrangement with 60 mm bore, 95 mm outer diameter and 65 mm overall width (2.362 × 3.74 × 2.559 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 173 kN, C0 245 kN, fatigue load limit Pu 27 kN, reference speed 4,300 r/min, limiting speed 6,700 r/min, mass about 1.45 kg.
What does the /DB suffix on 32012T65X-DB mean?
The base 32012T65 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 32012T65X-DB for one bearing or the pair?
They are for the complete matched pair: C 173 kN dynamic and C0 245 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 32012T65 X table values.
Can 32012T65X-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 60 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 60 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.