T7FC055T73-DTC10 bearing: complete specifications & equivalents
The T7FC055T73-DTC10 is a ISO 355 radial bearing sized 55 x 115 x 73 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 55 mm |
| Outer diameter D | 115 mm |
| Width B | 73 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 266 kN |
| Basic static load rating C0 | 325 kN |
| Fatigue load limit Pu | 39 kN |
| Reference speed (thermal) | 3400 rpm |
| Limiting speed (mechanical) | 5600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 3500 g |
| Manufacturer designation | SKF T7FC 055T73/DTC10 |
| 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-dt-series range
| Bore d | 2.165 in |
|---|---|
| Outer diameter D | 4.528 in |
| Width B | 2.874 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 30 mm |
| Smallest bore in matched-dt-series | 45 mm |
| Largest outer diameter in matched-dt-series | 160 mm |
| Width range across matched-dt-series | 62–98 mm |
| Bore position in matched-dt-series (smallest first) | 3 of 6 |
| Bore above smallest matched-dt-series size | 10 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| T7FC055T73 | 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 T7FC055T73-DTC10 model number is decoded
Dividing the pair C 266 kN by the 55 mm bore gives 4.84 kN per millimetre of journal for the complete arrangement — a density metric that compares matched sets across the tandem matched pair family. Journal and housing interface: the 55 mm bore takes a k5 shaft seat and the 115 mm outside diameter pairs with an H7 housing bore; the 73 mm width defines shoulder depth and the 3500 g mass is the dead load in thermal-growth calculations. Thermal behaviour of the pair: heat generated in the 55 mm bore cones flows along the shaft and changes the setting; the /DT clearance class is chosen for the catalogue speed range 3,400–5,600 r/min, so re-select the clearance class if the application runs hotter. Lubrication for the pair should be sized against the combined 73 mm width and 3500 g mass: two roller sets sweep twice the contact area of a single bearing of the same bore.T7FC055T73-DTC10 is a matched pair of single-row tapered roller bearings arranged tandem matched pair, supplied by SKF in SKF catalogue PUB BU/P1 17000 as one factory-set unit: the two bearings, spacers and setting are matched together and must not be mixed with other sets.Digit by digit, T7FC055T73-DTC10 reads as the ISO 355 base bearing T7FC 055T73 supplied as a tandem matched pair matched pair (/DT); the 55 mm bore and 115 mm OD are per-bearing, the 73 mm width is for the set. Tandem pairing is the high-one-direction-thrust solution: the two cones of T7FC055T73-DTC10 share the axial load through the ground spacer, and the set is used where a single bearing of the 55 mm bore cannot carry the thrust component.
Typical equipment & failure modes
Common applications
- industrial gearbox shafts and reducers
- differential and pinion drives
- pump and compressor shafts
- automotive and light-truck wheel hubs
Known failure patterns
- uneven load sharing in a pair when spacer faces are not parallel to the bore
- false brinelling on idle paired sets exposed to machine vibration
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- brinelling from pressing the cone or cup home through the rollers
- grease degradation after long shelf storage without rotation or re-greasing
Selection pitfalls — read before you substitute
- A matched /DT set is ground as one system: never separate the two bearings of T7FC055T73-DTC10 or swap the spacer — the factory clearance is lost the moment the set is broken.
- Spacer faces must stay parallel within the set's own tolerance; a tilted spacer in T7FC055T73-DTC10 concentrates reversing thrust on one bearing and shows up as one-sided raceway wear.
- Spacer faces must stay parallel within the set's own tolerance; a tilted spacer in T7FC055T73-DTC10 concentrates reversing thrust on one bearing and shows up as one-sided raceway wear.
- The 266/325 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 T7FC 055T73/DTC10 designation when purchasing — base-number-only orders are ambiguous across executions and variants.
Frequently asked questions
What are the dimensions and catalogue data of T7FC055T73-DTC10?
The SKF T7FC 055T73/DTC10 is a matched pair of single-row tapered roller bearings in tandem matched pair arrangement with 55 mm bore, 115 mm outer diameter and 73 mm overall width (2.165 × 4.528 × 2.874 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 266 kN, C0 325 kN, fatigue load limit Pu 39 kN, reference speed 3,400 r/min, limiting speed 5,600 r/min, mass about 3.50 kg.
What does the /DT suffix on T7FC055T73-DTC10 mean?
The base T7FC 055T73 is the ISO 355 single-row bearing; the /DT suffix marks the matched-set execution — the arrangement (tandem), 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 T7FC055T73-DTC10 for one bearing or the pair?
They are for the complete matched pair: C 266 kN dynamic and C0 325 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 T7FC 055T73 table values.
Can T7FC055T73-DTC10 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 55 mm shaft) and axial clamping through the cones; re-setting in the field destroys the matched clearance class.
When should a tandem matched set be chosen?
Choose the tandem set where one-direction thrust exceeds a single bearing's capacity — the two rows share the thrust, while a separate opposing bearing or set must cover the other direction.
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.