YSA-206-2FK-H-2306 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-206-2FK-H-2306 model number is decoded

YSA 206-2FK H 2306 is SKF's 25 mm-bore tapered-bore (1:12) insert bearing supplied on its H 2306 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 25x62x28 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 H 2306 sleeve is drawn up the taper to clamp a plain 25 mm shaft with a locknut, giving the concentricity and easy mounting of adapter-sleeve bearings. the shaft diameter is set by the H 2306 adapter sleeve, not by the bearing code: the sleeve seats a 25 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 25x62x28 mm (0.984x2.441x1.102 in), outer ring 18 mm wide, C 19.5 kN, C0 11.2 kN, Pu 0.475 kN. Mounted width B1 38 mm includes the adapter sleeve. Supplied/specified with H 2306. The catalogue publishes a single speed ceiling, the limiting speed: 6,300 r/min; mass 380 g. Static-first planning: the 0.4 kN of C0 per overall-width millimetre is the figure for belt tension peaks and rotor imbalance standstill loads on the 25 mm shaft, not the 19.5 kN L10 value. Bore-to-OD planning: OD 62 over bore 25 is a 2.48x step, while bore/overall-width gives 0.893; the spherical seat in the matching Y-housing must be specified to the 62 mm OD, not to a cylindrical housing bore. Rating split for the maintenance file: dynamic 19.5 kN (L10), static 11.2 kN (s0 shock check), fatigue 0.475 kN (adjusted life) — three separate uses for YSA 206-2FK H 2306, none interchangeable with another. Envelope arithmetic: the radial section from 25 mm bore to 62 mm OD is 18.5 mm; dividing C 19.5 kN by that section gives 1.054 kN per section millimetre, and the 28 mm overall width is 1.514x the section. The s1 22.5 mm dimension is printed for the locking zone — the distance before the adapter sleeve is driven up the taper — and it is verified at mounting, not recoverable from d/D/B alone. 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-206-2FK-H-2306: H 2306 pulls the tapered inner ring onto the 25 mm plain shaft; the printed s1 22.5 mm is the pre-drive distance and 38 mm is the overall width including the sleeve hardware.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Sleeve drive-up uses the printed s1 22.5 mm starting distance, not a torque value guessed from locknut size; re-measure the residual gap after tightening rather than trusting feel.
• 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.
• The order number is incomplete without the sleeve: YSA-206-2FK-H-2306 specifies the H 2306 adapter as part of the article; quoting only the YSA bearing risks delivery of a sleeve-less tapered bore that cannot mount.
• The 19.5/11.2 kN figures belong specifically to YSA 206-2FK H 2306; 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.