YELAG-206-103 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-206-103 model number is decoded

Listed in SKF 17000 chapter 2, YELAG 206-103 is a eccentric-locking-collar insert bearing with the inner ring extended on both sides, 30.162499999999998x62x36.5 mm overall, whose convex spherical outer ring pivots in the spherical bore of a Y-pillow, Y-flange or take-up housing. Construction pairs capped deep-groove geometry with a one-piece eccentric locking collar and a convex outer ring — quick to mount on plain commercial shafts and tolerant of initial static misalignment. reading YEL: an eccentric locking collar does the shaft clamping (popular where shaft tolerance and quick removal matter), inner ring extended symmetrically both sides. for inch shafts the order number carries the bore as whole-inches plus sixteenths: -103 = 30.162 mm, which is why this row sits beside, not on, the metric bore size. AG is the application variant for agricultural equipment — the same bore and OD as the standard sealed size but an application-specific grease/seal build and a conservative limiting speed for field machinery. Envelope 30.162499999999998x62x36.5 mm (1.188x2.441x1.437 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 370 g. Inner-geometry cross-reference: the catalogue shoulder diameters (d1 39.7 mm, d2 44.1 mm) set the shaft-abutment and sleeve limits; an abutment larger than these numbers contacts the seal or the inner flinger. Outer-vs-overall width: the outer ring is 18 mm wide inside the 36.5 mm total, so the extended inner ring accounts for 0.507 of the overall width (9.25 mm of axial projection per side). Imperial procurement cross-check: 1.188 in bore, 2.441 in OD, 1.437 in overall width; the 370 g mass converts to 0.370 kg (13.1 oz) for the bill of materials. Selection figures for YELAG 206-103: C0/C is 0.574, Pu 0.475 kN is 2.436 % of the 19.5 kN dynamic rating, and the 370 g catalogue mass works out to roughly 12.267 g per millimetre of the 30.162499999999998 mm bore. Envelope arithmetic: the radial section from 30.162499999999998 mm bore to 62 mm OD is 15.919 mm; dividing C 19.5 kN by that section gives 1.225 kN per section millimetre, and the 36.5 mm overall width is 2.293x the section. 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

• 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.
• 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.
• The eccentric collar is handed to running direction; fit it wrong on the 30.162499999999998 mm shaft and self-tightening becomes self-loosening. Mark the shaft rotation before stripping any YEL2 collar unit.
• Ordering discipline for the 30.162499999999998 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.