YSA-207-2FK-HA-2307 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-207-2FK-HA-2307 model number is decoded

The YSA2 series order number YSA 207-2FK HA 2307 is a SKF insert bearing (Y-bearing) for a 30.15 mm (1.187 in) shaft: tapered-bore (1:12) insert bearing supplied on its HA 2307 adapter sleeve, built to the ISO 15 diameter-series envelope with a sphered OD of 72 mm. Inside is a sealed, symmetrically extended ball insert with a tapered bore, the adapter sleeve converting a plain commercial shaft into a precision seat without shoulders, screw points or collars. reading YSA: the inner-ring bore is tapered 1:12 and the bearing ships/specifies with its HA 2307 adapter sleeve; driving the sleeve home locks the plain shaft without shoulders or screw points. read the 30.15 mm bore from the HA 2307 sleeve designation — the YSA code marks the bearing seat size and the sleeve series is offset by one (sleeve code 2307 clamps the 30.15 mm shaft). the -2F external design pairs a nitrile contact seal with a plain sheet-steel thrower on both sides — a two-stage exclusion chain of flinger first, sealing lip second, typical of farm and conveyor duty. Envelope 30.15x72x30.5 mm (1.187x2.835x1.201 in), outer ring 19 mm wide, C 25.5 kN, C0 15.3 kN, Pu 0.655 kN. Mounted width B1 43 mm includes the adapter sleeve. Supplied/specified with HA 2307. The catalogue publishes a single speed ceiling, the limiting speed: 5,300 r/min; mass 540 g. Envelope arithmetic: the radial section from 30.15 mm bore to 72 mm OD is 20.925 mm; dividing C 25.5 kN by that section gives 1.219 kN per section millimetre, and the 30.5 mm overall width is 1.458x the section. Rating split for the maintenance file: dynamic 25.5 kN (L10), static 15.3 kN (s0 shock check), fatigue 0.655 kN (adjusted life) — three separate uses for YSA 207-2FK HA 2307, none interchangeable with another. Static-first planning: the 0.502 kN of C0 per overall-width millimetre is the figure for belt tension peaks and rotor imbalance standstill loads on the 30.15 mm shaft, not the 25.5 kN L10 value. Pitch-diameter arithmetic: dm = (30.15+72)/2 = 51.075 mm; at the 5,300 r/min limiting speed the ball set runs at dn approx 2.71x10^5, reduced from an open bearing mainly by seal lip friction and the life-long grease fill. Outer-vs-overall width: the outer ring is 19 mm wide inside the 30.5 mm total, so the extended inner ring accounts for 0.377 of the overall width (5.75 mm of axial projection per side). 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. Mounting sequence for YSA-207-2FK-HA-2307: slide HA 2307 on first, seat the bearing in the housing register, then draw the nut to drive-up — reversing the order (sleeve fully tightened before housing engagement) locks in misalignment the sphered seat cannot cure.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Sleeve drive-up uses the printed s1 24.8 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-207-2FK-HA-2307 specifies the HA 2307 adapter as part of the article; quoting only the YSA bearing risks delivery of a sleeve-less tapered bore that cannot mount.
• The 25.5/15.3 kN figures belong specifically to YSA 207-2FK HA 2307; 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.