YAR-207-104-2RF-HV 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 YAR-207-104-2RF-HV model number is decoded

Listed in SKF 17000 chapter 2, YAR 207-104-2RF/HV is a grub-screw insert bearing with the inner ring extended on both sides, 31.75x72x42.9 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: -104 = 31.75 mm, which is why this row sits beside, not on, the metric bore size. HV is the corrosion-resistant food-range variant of the -2RF sealed design — stainless parts plus food-compatible rubber and lubricant, which also explains its lower published C and limiting speed. Envelope 31.75x72x42.9 mm (1.25x2.835x1.689 in), outer ring 19 mm wide, C 21.6 kN, C0 15.3 kN, Pu 0.655 kN. The catalogue publishes a single speed ceiling, the limiting speed: 3,200 r/min; mass 500 g. Inner-geometry cross-reference: the catalogue shoulder diameters (d1 46.1 mm) set the shaft-abutment and sleeve limits; an abutment larger than these numbers contacts the seal or the inner flinger. Load balance for documentation: C0 15.3 kN against C 21.6 kN gives a 0.708 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 = (31.75+72)/2 = 51.875 mm; at the 3,200 r/min limiting speed the ball set runs at dn approx 1.66x10^5, reduced from an open bearing mainly by seal lip friction and the life-long grease fill. The s1 25.4 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. Rating split for the maintenance file: dynamic 21.6 kN (L10), static 15.3 kN (s0 shock check), fatigue 0.655 kN (adjusted life) — three separate uses for YAR 207-104-2RF/HV, none interchangeable with another. Stainless food-range note: HV parts trade some capacity for corrosion resistance and food-compatible lubrication, and the printed limiting speed is set for that fill; do not top up with ordinary mineral grease in service — mixing greases can harden the food-grade fill and seize the seals. Service tip for YAR-207-104-2RF-HV: 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 20.125 mm radial section.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The 25.4 mm s1 dimension is the screw seating geometry inside the 23.9 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 31.75 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 21.6/15.3 kN figures belong specifically to YAR 207-104-2RF/HV; 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.