YARAG-209 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 model number is decoded

Listed in SKF 17000 chapter 2, YARAG 209 is a grub-screw insert bearing with the inner ring extended on both sides, 45x85x49.2 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. the size code 209 carries the usual bore arithmetic — 45 mm (code 09 x 5) — while the leading 2 marks the ISO 15 diameter series 2 sphered-OD envelope. 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 45x85x49.2 mm (1.772x3.346x1.937 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 660 g. Inner-geometry cross-reference: the catalogue shoulder diameters (d1 56.8 mm) set the shaft-abutment and sleeve limits; an abutment larger than these numbers contacts the seal or the inner flinger. Envelope arithmetic: the radial section from 45 mm bore to 85 mm OD is 20 mm; dividing C 33.2 kN by that section gives 1.66 kN per section millimetre, and the 49.2 mm overall width is 2.46x the section. Static-first planning: the 0.439 kN of C0 per overall-width millimetre is the figure for belt tension peaks and rotor imbalance standstill loads on the 45 mm shaft, not the 33.2 kN L10 value. 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. Fillet discipline: the printed r_min 1 mm limit means shaft and housing fillets must stay under that radius; a fillet that bottoms the 45x85 mm insert on its chamfer tilts the whole spherical seat. Service tip for YARAG-209: dimpled or drilled shaft spots under the screw points are sometimes specified on shock duty, but the standard mounting relies on point indentation alone — never substitute longer screws that reach the 20 mm radial section.

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 45 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; 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.