YELAG-206-102 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 YELAG-206-102 model number is decoded

YELAG 206-102 is SKF's 28.575 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 28.575x62x36.5 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 -102 tail codes the bore in inches for inch-shaft bearings: 1 whole inch 2/16 in = 28.575 mm (first digit whole inches, next two sixteenths of an inch). AG marks the agricultural-machinery application execution, built on the sealed both-sides-extended geometry and tuned for the low-speed, shock-laden duty of harvesters, balers and spreaders — note the catalogue prints a much reduced limiting speed for this variant. Envelope 28.575x62x36.5 mm (1.125x2.441x1.437 in), outer ring 18 mm wide, C 19.5 kN, C0 11.2 kN, Pu 0.475 kN. Mounted width B1 48.4 mm includes the eccentric collar. The catalogue publishes a single speed ceiling, the limiting speed: 1,200 r/min; mass 400 g. Pitch-diameter arithmetic: dm = (28.575+62)/2 = 45.288 mm; at the 1,200 r/min limiting speed the ball set runs at dn approx 0.54x10^5, reduced from an open bearing mainly by seal lip friction and the life-long grease fill. Capacity density: 19.5 kN from 0.400 kg of bearing steel is about 48.75 kN per kilogram, and per width millimetre the 36.5 mm unit carries 0.534 kN of dynamic capacity. Spherical-seat note in numbers: the 62 mm OD is ground spherical, so the self-aligning pivot happens on a circle roughly pi x 45.288 = 142.276 mm in mean circumference — keep that interface greased, because corrosion locking turns the pivot into a fixed misaligned mount. Fatigue-limit check: Pu 0.475 kN is the equivalent-load threshold under which the SKF adjusted-rating model credits very long life for YELAG 206-102 — most belt-driven mounted-unit loads sit comfortably under 2.436 % of C. Mass-to-load ratio for YELAG-206-102: 20.513 g of catalogue mass per rated kN of C, and 13.998 g per millimetre of bore — useful when comparing executions of the same 28.575x62 mm envelope on the drawing. Collar geometry for this size: over the 18 mm outer-ring width the inner ring runs to 36.5 mm overall (48.4 mm including the eccentric collar width), giving the collar its eccentric seating face clear of the seal.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Overall width 48.4 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.
• The eccentric collar is handed to running direction; fit it wrong on the 28.575 mm shaft and self-tightening becomes self-loosening. Mark the shaft rotation before stripping any YEL2 collar unit.
• The 19.5/11.2 kN figures belong specifically to YELAG 206-102; HV stainless, AG agricultural and VE495 zinc-plated variants of the same envelope publish derated values, so write the complete order number including suffixes on the purchase and maintenance records.