YELAG-205-100 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-205-100 model number is decoded

The YEL2 series order number YELAG 205-100 is a SKF insert bearing (Y-bearing) for a 25.4 mm (1 in) 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. inch bore code -100 decodes as 1", i.e. 25.4 mm; the metric coded size YELAG 205 shares the same envelope but its bore is the metric value, not this one. the AG suffix identifies the farm-duty variant of the range: sealed and flinger-protected for chaff and dust, with the catalogue deliberately derating its permissible speed versus the industrial execution. Envelope 25.4x52x34.9 mm (1x2.047x1.374 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: 1,500 r/min; mass 230 g. Imperial procurement cross-check: 1 in bore, 2.047 in OD, 1.374 in overall width; the 230 g mass converts to 0.230 kg (8.1 oz) for the bill of materials. Selection figures for YELAG 205-100: C0/C is 0.557, Pu 0.335 kN is 2.393 % of the 14 kN dynamic rating, and the 230 g catalogue mass works out to roughly 9.055 g per millimetre of the 25.4 mm bore. 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 25.4x52 mm insert on its chamfer tilts the whole spherical seat. At the printed limiting speed of 1,500 r/min the mean diameter dm = 38.7 mm implies dn about 0.58x10^5 mm.r/min — the speed-demand figure used when comparing this insert with open deep-groove sizes of the same bore. Pitch-diameter arithmetic: dm = (25.4+52)/2 = 38.7 mm; at the 1,500 r/min limiting speed the ball set runs at dn approx 0.58x10^5, reduced from an open bearing mainly by seal lip friction and the life-long grease fill. Direction rule for YELAG-205-100: the eccentric collar self-tightens in the shaft's running direction, so mark rotation at mounting; the 25.4 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

• 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.
• The eccentric collar is handed to running direction; fit it wrong on the 25.4 mm shaft and self-tightening becomes self-loosening. Mark the shaft rotation before stripping any YEL2 collar unit.
• 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 14/7.8 kN figures belong specifically to YELAG 205-100; 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.