YET-209-111 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-28

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); 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 YET-209-111 model number is decoded

YET 209-111 is SKF's 42.8625 mm-bore eccentric-locking-collar insert bearing with a one-side-extended inner ring in the YEL2 series — a Y-bearing with a spherically ground outside surface for static self-alignment inside a matching SKF Y-housing, boundary dimensions 42.8625x85x30.2 mm. The deep-groove ball set is built into an extended inner ring carrying a separate eccentric locking collar; turning the collar against its eccentric seat pinches the shaft, and the sphered outer ring self-aligns in the housing. the YET prefix identifies the eccentric-locking-collar design: a separate eccentric collar turns against a matching eccentric on the extended inner ring to pinch the shaft, extended one side. the three-digit -111 tail codes the bore in inches for inch-shaft bearings: 1 whole inch 11/16 in = 42.862 mm (first digit whole inches, next two sixteenths of an inch). this suffix-free execution is listed without the sealed external design: the 30.2 mm width is the one-side-extended inner ring alone, so protection depends on the housing seals and the relubrication routine rather than bearing-mounted contact seals. Envelope 42.8625x85x30.2 mm (1.688x3.346x1.189 in), outer ring 22 mm wide, C 33.2 kN, C0 21.6 kN, Pu 0.915 kN. Mounted width B1 43.7 mm includes the eccentric collar. The catalogue publishes a single speed ceiling, the limiting speed: 4,300 r/min; mass 730 g. The s1 32.7 mm dimension is printed for the locking zone — the set-screw/collar seating reference — and it is verified at mounting, not recoverable from d/D/B alone. Width accounting: B1 43.7 mm covers the bearing WITH its eccentric locking collar against 30.2 mm for the bearing itself and 22 mm outer-ring width; housing axial space is drawn to B1, seal replacement space to B. Bore-to-OD planning: OD 85 over bore 42.8625 is a 1.983x step, while bore/overall-width gives 1.419; the spherical seat in the matching Y-housing must be specified to the 85 mm OD, not to a cylindrical housing bore. Rating split for the maintenance file: dynamic 33.2 kN (L10), static 21.6 kN (s0 shock check), fatigue 0.915 kN (adjusted life) — three separate uses for YET 209-111, none interchangeable with another. Fillet discipline: the printed r_min 1 mm limit means shaft and housing fillets must stay under that radius; a fillet that bottoms the 42.8625x85 mm insert on its chamfer tilts the whole spherical seat. One-side collar note: the eccentric collar mounts on the extended side only and must turn in the shaft rotation direction to self-tighten; on reversing drives this design can loosen by design intent — choose grub-screw or ConCentra locking for true bidirectional shafts. Direction rule for YET-209-111: the eccentric collar self-tightens in the shaft's running direction, so mark rotation at mounting; the 42.8625 mm shaft must be free of burrs under the collar or the eccentric cannot bed flat.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Never pin or weld the eccentric collar: the controlled eccentric friction is the locking principle, and pinning turns a demountable insert into a shaft-replacement job.
• The eccentric collar is handed to running direction; fit it wrong on the 42.8625 mm shaft and self-tightening becomes self-loosening. Mark the shaft rotation before stripping any YEL2 collar unit.
• Overall width 43.7 mm includes collar space — a housing sized for a grub-screw insert of the same OD can be too narrow axially for the YET collar.
• Ordering discipline for the 42.8625 mm size: the chapter lists several executions side by side (YEL2 locking style x seal package x application variant); a bare-number substitution needs a fresh dimension, speed and rating check rather than a like-for-like assumption.