YAR-204-012-2RFGR-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-204-012-2RFGR-HV model number is decoded

Listed in SKF 17000 chapter 2, YAR 204-012-2RFGR/HV is a grub-screw insert bearing with the inner ring extended on both sides, 19.049999999999997x47x31 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: -012 = 19.05 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 19.049999999999997x47x31 mm (0.75x1.85x1.22 in), outer ring 14 mm wide, C 10.8 kN, C0 6.55 kN, Pu 0.28 kN. The catalogue publishes a single speed ceiling, the limiting speed: 5,000 r/min; mass 160 g. Load balance for documentation: C0 6.55 kN against C 10.8 kN gives a 0.606 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. Selection figures for YAR 204-012-2RFGR/HV: C0/C is 0.606, Pu 0.28 kN is 2.593 % of the 10.8 kN dynamic rating, and the 160 g catalogue mass works out to roughly 8.399 g per millimetre of the 19.049999999999997 mm bore. Mass-to-load ratio for YAR-204-012-2RFGR-HV: 14.815 g of catalogue mass per rated kN of C, and 8.399 g per millimetre of bore — useful when comparing executions of the same 19.049999999999997x47 mm envelope on the drawing. Bore-to-OD planning: OD 47 over bore 19.049999999999997 is a 2.467x step, while bore/overall-width gives 0.615; the spherical seat in the matching Y-housing must be specified to the 47 mm OD, not to a cylindrical housing bore. Speed ceiling of 5,000 r/min is the catalogue mechanical limit for THIS execution; the stainless/food-grade HV fill sets this lower value, so real fan duty is planned well below it. 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. Set-screw geometry on this size: the two 120 deg screws bear on the 19.049999999999997 mm shaft inside the 31 mm total width while the outer ring is only 14 mm wide, leaving the extended ring to carry the screw points clear of the ball track.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Do not specify the 19.049999999999997 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 18.3 mm s1 dimension is the screw seating geometry inside the 17 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.
• Catalogue ratings belong to YAR 204-012-2RFGR/HV as the grub two hv execution; other order numbers of the YAR 204-012 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.