1985-1922 bearing: complete specifications & equivalents

Specification table

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.

Cross references & equivalents

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 1985-1922 model number is decoded

SKF 1985 (SKF 1985/1922) is the 1900-series tapered roller choice for a 28.575 mm shaft — one row of tapered rollers on an asymmetric raceway inside the 57.15×19.845 mm envelope.The 1900-series series assigns 28.575 mm bore, 57.15 mm OD and 19.845 mm width to 1985; the cone and cup references are not interchangeable with other inch-series pairs even when the bore matches, because the cup profile and rib geometry are series-specific. SKF lists the plain number as the basic execution; letter suffixes such as B denote a steeper contact angle and are different order numbers. At 10,000 r/min reference speed the 14.3 mm-section 1985 is governed thermally by preload and lubricant flow; grease or oil selection should be made against that value, with 12,000 r/min as the mechanical ceiling. Specify pairs rather than single units wherever thrust reverses: the tapered contact of 1985 generates an induced axial load under radial force, and an unpaired bearing on a reversing shaft will run slack and fret its seat. Dimensional interchange map: within the 19800 series at 28.575 mm bore, the 57.15 mm OD and 19.845 mm width are fixed by the ISO 355 plan, so any same-code bearing from another brand shares the mounting envelope; the 14.3 mm section height distinguishes this family from a 302 or 322 of the same bore, and the 230 g mass is the minimum—sealed or snap-ring executions add rotating weight above that catalogue baseline. Cone-and-cup identity in 1985: the leading 1985 reference identifies the inner ring, rollers and cage; the trailing 1922 reference identifies the outer ring. The 1900-series series lists alternative cups for the same cone, each producing a different 57.15 mm OD or 19.845 mm width — hence a different SKU even though the bore stays at 28.575 mm.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On this 28.575 mm bore, interference and temperature rise consume clearance inside a preloaded pair; calculate the residual clearance after mounting and at operating temperature — an over-tight 1985 pair heats, loses setting control and smears the roller-rib contact.
• The 1900-series inch series at 28.575 mm bore (57.15×19.845 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.
• At the 58.2 kN rating of 1985, preload class changes stiffness by tens of percent but also heat generation; select light preload for the 12,000 r/min speed end and heavier preload only where moment stiffness dominates.
• Setting is a design value, not an assembly feel: excessive preload in the 1985 pair raises operating temperature and can trigger thermal runaway, while too little lets the rollers skid and smear the raceway under light load.
• Never press both rings through the wrong element during fitting: force for an interference shaft seat goes through the cone only, or brinell marks on the 57.15 mm cup race release as noise within the first running hours.
• The 58.2/55 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 1985 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 1985/1922 designation when purchasing and match the execution to the mounting arrangement.