67983-67920 bearing: complete specifications & equivalents
The 67983-67920 is a ISO 355 radial bearing sized 203.2 x 282.575 x 46.038 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 203.2 mm |
| Outer diameter D | 282.575 mm |
| Width B | 46.038 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 465 kN |
| Basic static load rating C0 | 830 kN |
| Fatigue load limit Pu | 76.5 kN |
| Reference speed (thermal) | 1600 rpm |
| Limiting speed (mechanical) | 2000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 8850 g |
| Manufacturer designation | SKF 67983/67920 |
| Standard | ISO 355 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch single-row TRB |
| Last verified | 2026-09-28 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch single-row TRB) · extracted 2026-09-28
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch single-row TRB); 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 & 67900-series range
| Bore d | 8 in |
|---|---|
| Outer diameter D | 11.125 in |
| Width B | 1.813 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 39.7 mm |
| Smallest bore in 67900-series | 198.298 mm |
| Largest outer diameter in 67900-series | 282.575 mm |
| Width range across 67900-series | 46.038–46.038 mm |
| Bore position in 67900-series (smallest first) | 3 of 4 |
| Bore above smallest 67900-series size | 4.901999999999987 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 67983-67920 | Timken | full Dimensions and internal design equivalent — standard interchange. | Same inch-series cone/cup boundary envelope (d/D/T); load ratings and speed limits are brand-specific and may differ. |
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 67983-67920 model number is decoded
Why the cup reference matters here: in the 67900-series tables the 67983 cone appears against several cup options. 67983 is the pairing with 67920, and that choice — not the cone — fixes the 282.575 mm OD, the raceway track position and the 46.038 mm assembled width.Ordering number SKF 67983/67920 in SKF catalogue PUB BU/P1 17000 denotes a single-row tapered roller bearing for a 203.2 mm shaft, inch series, with an open pressed-steel-cage execution and one-direction axial capacity.Digit by digit, 67983 reads as cone reference / cup reference in the 67900-series inch series; the 203.2 mm bore, 282.575 mm OD and 46.038 mm width are the metric equivalents of the original inch boundary values. In SKF suffix language a bare 67983 is the standard execution; B marks a larger contact angle and Q or J2 mark clearance/cage variants, all quoted separately. Selection arithmetic: the C0/C ratio is about 1.78 (static 830 kN against dynamic 465 kN), typical of a tapered roller sized for axial capacity, and the 76.5 kN fatigue load limit Pu is the equivalent-load floor used in the life calculation. A single 67983 locates the shaft in one axial direction only; mount it against a second bearing in O (back-to-back) or X (face-to-face) arrangement, and set the running clearance by the mounting procedure — not by feel. Journal and housing interface: the 203.2 mm bore takes a m6 shaft seat (upper deviation ~0.406 mm for this diameter range) and the 282.575 mm outside diameter pairs with an H7 housing bore tolerance band of 282.575.000/282.595 mm; the 46.038 mm width defines the shoulder depth, and the 8850 g cone-plus-cup assembly is the dead load on the shaft during thermal expansion calculations.
Typical equipment & failure modes
Common applications
- large crusher and mineral-processing drives
- wind-turbine main shafts
- marine propulsion gearboxes
- rolling-mill roll-neck bearings
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
- uneven load sharing in a pair when spacer faces are not parallel to the bore
- roller large-end smearing against the cone rib after EP lubricant film failure
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- edge loading from shaft deflection or housing misalignment
Selection pitfalls — read before you substitute
- At 203.2 mm bore the cone mass is high enough that cocking during mounting damages the cage and rib; guide the ring square, confirm seat contact around the full circumference, and re-check setting after the first thermal cycle of the paired set.
- The 67900-series inch series at 203.2 mm bore (282.575×46.038 mm) follows the Timken cone/cup convention; substitutions must match both the cone and cup reference exactly — interchanging with another series or a metric 3xxxx bearing of the same bore changes OD, width and contact angle, so re-run the pair setting and shoulder-diameter checks before swapping.
- When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of 67983 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
- When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of 67983 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
- Shaft and housing fillets must clear the bearing chamfer so the 46.038 mm-wide cup seats square; use an undercut or withdrawal groove rather than an oversized radius that locks on the ring face.
- The 465/830 kN ratings are SKF catalogue 17000 values for the basic 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 and re-verify for critical drives.
- SKF lists several executions of 67983 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 67983/67920 designation when purchasing and match the execution to the mounting arrangement.
Frequently asked questions
Is 67983 interchangeable with other brands?
Inch-series tapered roller bearings follow a long-standing industry boundary plan, so cones and cups of the same basic number are generally dimensionally interchangeable across manufacturers. However, internal geometry, cage design and load ratings differ by brand, so for paired or precision applications keep both halves of the set from one manufacturer — or re-verify ratings and setting when mixing.
What are the dimensions and catalogue data of 67983?
The SKF 67983/67920 is a single-row tapered roller bearing with 203.2 mm bore, 282.575 mm outer diameter and 46.038 mm width (8 × 11.125 × 1.813 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 465 kN, C0 830 kN, fatigue load limit Pu 76.5 kN, reference speed 1,600 r/min, limiting speed 2,000 r/min, mass about 8850 g. It is an open, separable bearing with a pressed-steel cage.
How does the 67983 inch-series designation work?
Inch-series tapered roller bearings use a Timken-style cone/cup convention: the number before the slash identifies the cone (inner ring with roller and cage assembly), the number after the slash identifies the cup (outer ring), and the 67900-series code marks the dimensional series. The metric dimensions 203.2×282.575×46.038 mm are the converted equivalents of the original inch boundary dimensions.
What do the cone and cup numbers in 67983 mean?
The cone number (before the slash) identifies the inner ring, rollers and cage; the cup number (after the slash) identifies the outer ring. Both are quoted together because a single-row tapered roller bearing is a matched separable pair — the cone and cup are ground to work together and are not interchangeable with arbitrary other parts. The series prefix (67900-series) groups sizes that share the same boundary-dimension plan.
Can a single 67983 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.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch single-row TRB on 2026-09-28. Read our editorial & correction policy.