T7FC080T98-DTC20 bearing: complete specifications & equivalents
The T7FC080T98-DTC20 is a ISO 355 radial bearing sized 80 x 160 x 98 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 80 mm |
| Outer diameter D | 160 mm |
| Width B | 98 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 480 kN |
| Basic static load rating C0 | 630 kN |
| Fatigue load limit Pu | 71 kN |
| Reference speed (thermal) | 2400 rpm |
| Limiting speed (mechanical) | 4000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 8800 g |
| Manufacturer designation | SKF T7FC 080T98/DTC20 |
| 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 | 3.15 in |
|---|---|
| Outer diameter D | 6.299 in |
| Width B | 3.858 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 40 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) | 6 of 6 |
| Bore above smallest matched-dt-series size | 35 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| T7FC080T98 | 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 T7FC080T98-DTC20 model number is decoded
T7FC080T98-DTC20 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.The code breaks down as base bearing T7FC 080T98 plus matched-set suffix /DT: two bearings of the 80 mm bore size, paired tandem matched pair, with the 98 mm overall width spanning the whole arrangement. In the tandem arrangement both bearings face the same way, so one-direction thrust is shared by two rows: T7FC080T98-DTC20 roughly doubles the single-bearing axial capacity in one direction while a separate opposing bearing or set must react thrust the other way. With a pair mass of 8800 g across the 80×160×98 mm envelope, the set replaces what would otherwise be two separate bearings plus spacer grinding work — the factory setting is the engineering value being purchased. Cross-section geometry: the 40.0 mm half-section ((160−80)/2) places the roller pitch diameter near 120 mm, and the 98 mm axial width sets the abutment depth — geometry that fixes the contact angle behaviour of T7FC080T98-DTC20. Setting note for T7FC080T98-DTC20: the axial clearance is set at the factory by selective spacer grinding for the /DT execution; in service, re-checking end play after the first thermal cycle catches seating relaxation before it becomes roller skid. The rotating cones of T7FC080T98-DTC20 take a k5 seat on the 80 mm shaft; the cups are a transition-to-loose fit so the pair can be clamped to its factory setting during assembly.
Typical equipment & failure modes
Common applications
- paper-machine and printing rolls
- construction machinery drives
- marine deck machinery shafts
- paper-machine and printing rolls
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
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- 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
- Replace T7FC080T98-DTC20 as a complete set: pairing a new bearing with a worn partner leaves the clearance undefined even when the designation matches.
- Setting is built into T7FC080T98-DTC20; the classic field error is re-adjusting a matched pair as if it were two loose single bearings, which destroys the /DT clearance class.
- Replace T7FC080T98-DTC20 as a complete set: pairing a new bearing with a worn partner leaves the clearance undefined even when the designation matches.
- The 480/630 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 080T98/DTC20 designation when purchasing — base-number-only orders are ambiguous across executions and variants.
Frequently asked questions
What are the dimensions and catalogue data of T7FC080T98-DTC20?
The SKF T7FC 080T98/DTC20 is a matched pair of single-row tapered roller bearings in tandem matched pair arrangement with 80 mm bore, 160 mm outer diameter and 98 mm overall width (3.15 × 6.299 × 3.858 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 480 kN, C0 630 kN, fatigue load limit Pu 71 kN, reference speed 2,400 r/min, limiting speed 4,000 r/min, mass about 8.80 kg.
What does the /DT suffix on T7FC080T98-DTC20 mean?
The base T7FC 080T98 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 T7FC080T98-DTC20 for one bearing or the pair?
They are for the complete matched pair: C 480 kN dynamic and C0 630 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 080T98 table values.
Can T7FC080T98-DTC20 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 80 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.