YSA-209-2FK-HA-2309 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 YSA-209-2FK-HA-2309 model number is decoded

YSA 209-2FK HA 2309 is SKF's 36.512 mm-bore tapered-bore (1:12) insert bearing supplied on its HA 2309 adapter sleeve in the YSA2 series — a Y-bearing with a spherically ground outside surface for static self-alignment inside a matching SKF Y-housing, boundary dimensions 36.512x85x35 mm. The inner ring carries a 1:12 tapered bore and mounts on the specified adapter sleeve: tightening the sleeve nut draws the ring home on a plain shaft, while the sphered outer ring pivots in the Y-housing. YSA names the tapered-bore (K, 1:12 taper) insert mounted on an adapter sleeve: the HA 2309 sleeve is drawn up the taper to clamp a plain 36.512 mm shaft with a locknut, giving the concentricity and easy mounting of adapter-sleeve bearings. the shaft diameter is set by the HA 2309 adapter sleeve, not by the bearing code: the sleeve seats a 36.512 mm plain shaft under the tapered bore. suffix -2F means an NBR rubber contact seal plus a plain pressed-steel flinger on EACH side: the lip rides the extended inner ring while the flinger sheds coarse contamination before it reaches the lip. Envelope 36.512x85x35 mm (1.437x3.346x1.378 in), outer ring 22 mm wide, C 33.2 kN, C0 21.6 kN, Pu 0.915 kN. Mounted width B1 50 mm includes the adapter sleeve. Supplied/specified with HA 2309. The catalogue publishes a single speed ceiling, the limiting speed: 4,300 r/min; mass 920 g. Rating split for the maintenance file: dynamic 33.2 kN (L10), static 21.6 kN (s0 shock check), fatigue 0.915 kN (adjusted life) — three separate uses for YSA 209-2FK HA 2309, none interchangeable with another. At the printed limiting speed of 4,300 r/min the mean diameter dm = 60.756 mm implies dn about 2.61x10^5 mm.r/min — the speed-demand figure used when comparing this insert with open deep-groove sizes of the same bore. Spherical-seat note in numbers: the 85 mm OD is ground spherical, so the self-aligning pivot happens on a circle roughly pi x 60.756 = 190.871 mm in mean circumference — keep that interface greased, because corrosion locking turns the pivot into a fixed misaligned mount. Fatigue-limit check: Pu 0.915 kN is the equivalent-load threshold under which the SKF adjusted-rating model credits very long life for YSA 209-2FK HA 2309 — most belt-driven mounted-unit loads sit comfortably under 2.756 % of C. Mass-to-load ratio for YSA-209-2FK-HA-2309: 27.711 g of catalogue mass per rated kN of C, and 25.197 g per millimetre of bore — useful when comparing executions of the same 36.512x85 mm envelope on the drawing. Adapter-sleeve note: tighten the sleeve locknut to the catalogue axial drive-up (s1 is printed as the starting distance before the sleeve is driven into the tapered bore); under-tightening lets the inner ring creep, over-tightening eliminates internal clearance and preloads the balls hot. Sleeve geometry on YSA-209-2FK-HA-2309: HA 2309 pulls the tapered inner ring onto the 36.512 mm plain shaft; the printed s1 29 mm is the pre-drive distance and 50 mm is the overall width including the sleeve hardware.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The order number is incomplete without the sleeve: YSA-209-2FK-HA-2309 specifies the HA 2309 adapter as part of the article; quoting only the YSA bearing risks delivery of a sleeve-less tapered bore that cannot mount.
• Plain-shaft advantage is also its trap: with no shoulders, axial location comes entirely from the sleeve/nut reaction — the abutment behind the sleeve must be square and present.
• Sleeve drive-up uses the printed s1 29 mm starting distance, not a torque value guessed from locknut size; re-measure the residual gap after tightening rather than trusting feel.
• Catalogue ratings belong to YSA 209-2FK HA 2309 as the adapter two f execution; other order numbers of the YSA 209-2FK size are different articles (open vs sealed, plain vs rubberized flinger, stainless vs carbon steel) and may carry different ratings or speeds — always quote the full designation.