YEL-209-111-2F 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 YEL-209-111-2F model number is decoded

YEL 209-111-2F is SKF's 42.8625 mm-bore eccentric-locking-collar insert bearing with the inner ring extended on both sides 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 42.8625x85x42.8 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 YEL 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 both sides. 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). suffix -2F means an NBR rubber contact seal plus a plain pressed-steel flinger on EACH side: the lip rides the extended inner ring while the flinger sheds coarse contamination before it reaches the lip. Envelope 42.8625x85x42.8 mm (1.688x3.346x1.685 in), outer ring 22 mm wide, C 33.2 kN, C0 21.6 kN, Pu 0.915 kN. Mounted width B1 56.3 mm includes the eccentric collar. The catalogue publishes a single speed ceiling, the limiting speed: 4,300 r/min; mass 860 g. Capacity density: 33.2 kN from 0.860 kg of bearing steel is about 38.605 kN per kilogram, and per width millimetre the 42.8 mm unit carries 0.776 kN of dynamic capacity. Bore-to-OD planning: OD 85 over bore 42.8625 is a 1.983x step, while bore/overall-width gives 1.001; the spherical seat in the matching Y-housing must be specified to the 85 mm OD, not to a cylindrical housing bore. Envelope arithmetic: the radial section from 42.8625 mm bore to 85 mm OD is 21.069 mm; dividing C 33.2 kN by that section gives 1.576 kN per section millimetre, and the 42.8 mm overall width is 2.031x the section. Spherical-seat note in numbers: the 85 mm OD is ground spherical, so the self-aligning pivot happens on a circle roughly pi x 63.931 = 200.845 mm in mean circumference — keep that interface greased, because corrosion locking turns the pivot into a fixed misaligned mount. Outer-vs-overall width: the outer ring is 22 mm wide inside the 42.8 mm total, so the extended inner ring accounts for 0.486 of the overall width (10.4 mm of axial projection per side). Two-side sealed collar note: after driving the eccentric collar tight, lock the collar set screw against its recess and verify the collar cannot be turned by hand; a collar that was merely pressed on without the eccentric bite spins on the shaft and frets it within hours. Direction rule for YEL-209-111-2F: 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

• 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 56.3 mm includes collar space — a housing sized for a grub-screw insert of the same OD can be too narrow axially for the YEL collar.
• 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.
• Catalogue ratings belong to YEL 209-111-2F as the ecc two f execution; other order numbers of the YEL 209-111 size are different articles (open vs sealed, plain vs rubberized flinger, stainless vs carbon steel) and may carry different ratings or speeds — always quote the full designation.