YEL-205-2F 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-205-2F model number is decoded

The YEL2 series order number YEL 205-2F is a SKF insert bearing (Y-bearing) for a 25 mm shaft: eccentric-locking-collar insert bearing with the inner ring extended on both sides, built to the ISO 15 diameter-series envelope with a sphered OD of 52 mm. Inside sits a sealed ball insert with an eccentric collar on the extended ring: collar bite locks the shaft, the contact seals retain the life grease, and the spherical OD floats in the Y-housing. YEL means collar locking instead of grub screws — fit the eccentric collar, turn it in the rotation direction until it grips, then lock the collar's own setscrew; the inner ring is extended on both sides. the size code 205 carries the usual bore arithmetic — 25 mm — while the leading 2 marks the ISO 15 diameter series 2 sphered-OD envelope. the -2F external design pairs a nitrile contact seal with a plain sheet-steel thrower on both sides — a two-stage exclusion chain of flinger first, sealing lip second, typical of farm and conveyor duty. Envelope 25x52x34.9 mm (0.984x2.047x1.374 in), outer ring 15 mm wide, C 14 kN, C0 7.8 kN, Pu 0.335 kN. Mounted width B1 44.4 mm includes the eccentric collar. The catalogue publishes a single speed ceiling, the limiting speed: 7,000 r/min; mass 240 g. Fillet discipline: the printed r_min 0.6 mm limit means shaft and housing fillets must stay under that radius; a fillet that bottoms the 25x52 mm insert on its chamfer tilts the whole spherical seat. Bore-to-OD planning: OD 52 over bore 25 is a 2.08x step, while bore/overall-width gives 0.716; the spherical seat in the matching Y-housing must be specified to the 52 mm OD, not to a cylindrical housing bore. Width accounting: B1 44.4 mm covers the bearing WITH its eccentric locking collar against 34.9 mm for the bearing itself and 15 mm outer-ring width; housing axial space is drawn to B1, seal replacement space to B. Pitch-diameter arithmetic: dm = (25+52)/2 = 38.5 mm; at the 7,000 r/min limiting speed the ball set runs at dn approx 2.69x10^5, reduced from an open bearing mainly by seal lip friction and the life-long grease fill. Spherical-seat note in numbers: the 52 mm OD is ground spherical, so the self-aligning pivot happens on a circle roughly pi x 38.5 = 120.951 mm in mean circumference — keep that interface greased, because corrosion locking turns the pivot into a fixed misaligned mount. 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. Collar geometry for this size: over the 15 mm outer-ring width the inner ring runs to 34.9 mm overall (44.4 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 44.4 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 25 mm shaft and self-tightening becomes self-loosening. Mark the shaft rotation before stripping any YEL2 collar unit.
• The 14/7.8 kN figures belong specifically to YEL 205-2F; 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.