YARAG-209-111 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 YARAG-209-111 model number is decoded

Listed in SKF 17000 chapter 2, YARAG 209-111 is a grub-screw insert bearing with the inner ring extended on both sides, 42.8625x85x49.2 mm overall, whose convex spherical outer ring pivots in the spherical bore of a Y-pillow, Y-flange or take-up housing. Construction follows the Y-bearing principle: a capped and flinger-protected deep-groove ball insert, inner ring elongated for the screw points, outer ring convex-spherical for the housing seat. YAR is SKF's grub-screw insert design — an inner ring extended equally past the outer ring on both sides, the screws still 120 deg apart. for inch shafts the order number carries the bore as whole-inches plus sixteenths: -111 = 42.862 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 42.8625x85x49.2 mm (1.688x3.346x1.937 in), outer ring 22 mm wide, C 33.2 kN, C0 21.6 kN, Pu 0.915 kN. The catalogue publishes a single speed ceiling, the limiting speed: 850 r/min; mass 710 g. Load balance for documentation: C0 21.6 kN against C 33.2 kN gives a 0.651 ratio; mounted-unit positions with shock and standstill loading are normally checked on C0, while conveyor and fan duty are evaluated on the L10 figure. Pitch-diameter arithmetic: dm = (42.8625+85)/2 = 63.931 mm; at the 850 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. Grease-life arithmetic is dominated by speed: at dn approx 0.54x10^5 the sealed-for-life fill is planned for the catalogue's grease-life regime, which is why the AG variant caps speed so aggressively, and high-temperature mounts shorten both even when load is light. 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 49.2 mm overall width is 2.335x the section. The s1 30.2 mm dimension is printed for the locking zone — the set-screw/collar seating reference — and it is verified at mounting, not recoverable from d/D/B alone. Set-screw geometry on this size: the two 120 deg screws bear on the 42.8625 mm shaft inside the 49.2 mm total width while the outer ring is only 22 mm wide, leaving the extended ring to carry the screw points clear of the ball track.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The 30.2 mm s1 dimension is the screw seating geometry inside the 27.2 mm of extended inner ring; a shaft step that crowds that side prevents the screws reaching the shaft squarely.
• Replacement discipline: a YAR insert is not interchangeable with an eccentric-collar unit of the same envelope — the shaft may need spot-facing or collar space that does not exist.
• Do not specify the 42.8625 mm grub-screw insert for a shaft harder than about 45 HRC without dimples: the screw points skate on hard surfaces and the unit creeps regardless of tightening torque.
• The 33.2/21.6 kN figures belong specifically to YARAG 209-111; 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.