YAR-205-100-2RF-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-205-100-2RF-HV model number is decoded

Listed in SKF 17000 chapter 2, YAR 205-100-2RF/HV is a grub-screw insert bearing with the inner ring extended on both sides, 25.4x52x34.1 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: -100 = 25.4 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 25.4x52x34.1 mm (1x2.047x1.343 in), outer ring 15 mm wide, C 11.9 kN, C0 7.8 kN, Pu 0.335 kN. The catalogue publishes a single speed ceiling, the limiting speed: 4,300 r/min; mass 190 g. Outer-vs-overall width: the outer ring is 15 mm wide inside the 34.1 mm total, so the extended inner ring accounts for 0.56 of the overall width (9.55 mm of axial projection per side). Mass-to-load ratio for YAR-205-100-2RF-HV: 15.966 g of catalogue mass per rated kN of C, and 7.48 g per millimetre of bore — useful when comparing executions of the same 25.4x52 mm envelope on the drawing. Envelope arithmetic: the radial section from 25.4 mm bore to 52 mm OD is 13.3 mm; dividing C 11.9 kN by that section gives 0.895 kN per section millimetre, and the 34.1 mm overall width is 2.564x the section. Static-first planning: the 0.229 kN of C0 per overall-width millimetre is the figure for belt tension peaks and rotor imbalance standstill loads on the 25.4 mm shaft, not the 11.9 kN L10 value. Selection figures for YAR 205-100-2RF/HV: C0/C is 0.655, Pu 0.335 kN is 2.815 % of the 11.9 kN dynamic rating, and the 190 g catalogue mass works out to roughly 7.48 g per millimetre of the 25.4 mm bore. 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-205-100-2RF-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 13.3 mm radial section.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The 19.8 mm s1 dimension is the screw seating geometry inside the 19.1 mm of extended inner ring; a shaft step that crowds that side prevents the screws reaching the shaft squarely.
• Do not specify the 25.4 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.
• 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.
• The 11.9/7.8 kN figures belong specifically to YAR 205-100-2RF/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.