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

YAR 205-100-2RFGR/HV is SKF's 25.4 mm-bore grub-screw insert bearing with the inner ring extended on both sides in the YAR2 series — a Y-bearing with a spherically ground outside surface for static self-alignment inside a matching SKF Y-housing, boundary dimensions 25.4x52x34.1 mm. Wide-inner-ring deep-groove ball geometry carries the load: the extended inner ring gives the shaft grip and the seal lands, while the outer ring stays narrow and spherically ground on its outside surface. the YAR prefix names SKF grub-screw Y-bearings: two set screws in the extended inner ring lock the shaft at a 120 deg angle, and the inner ring extends symmetrically on both sides. the three-digit -100 tail codes the bore in inches for inch-shaft bearings: 1 whole inch = 25.4 mm (first digit whole inches, next two sixteenths of an inch). /HV identifies the stainless-steel, food-industry execution: stainless bearing components, food-compatible rubber in the seal/flinger set and food-grade grease fill — the catalogue ratings are correspondingly below the standard steel version, and the GR marking adds the lubrication groove in the sphered outside surface on the locking side. 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. Mass-to-load ratio for YAR-205-100-2RFGR-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. Grease-life arithmetic is dominated by speed: at dn approx 1.66x10^5 the sealed-for-life fill is planned for the catalogue's grease-life regime, which is why the limiting speed and the relubrication interval move together, and high-temperature mounts shorten both even when load is light. The s1 19.8 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. Selection figures for YAR 205-100-2RFGR/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. Imperial procurement cross-check: 1 in bore, 2.047 in OD, 1.343 in overall width; the 190 g mass converts to 0.190 kg (6.7 oz) for the bill of materials. 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-205-100-2RFGR-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

• 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 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.
• Catalogue ratings belong to YAR 205-100-2RFGR/HV as the grub two hv execution; other order numbers of the YAR 205-100 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.