YAR-207-106-2RFGR-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-207-106-2RFGR-HV model number is decoded

YAR 207-106-2RFGR/HV is SKF's 34.925 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 34.925x72x42.9 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 -106 tail codes the bore in inches for inch-shaft bearings: 1 whole inch 6/16 in = 34.925 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 34.925x72x42.9 mm (1.375x2.835x1.689 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 450 g. Outer-vs-overall width: the outer ring is 19 mm wide inside the 42.9 mm total, so the extended inner ring accounts for 0.557 of the overall width (11.95 mm of axial projection per side). 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 207-106-2RFGR/HV, none interchangeable with another. Selection figures for YAR 207-106-2RFGR/HV: C0/C is 0.708, Pu 0.655 kN is 3.032 % of the 21.6 kN dynamic rating, and the 450 g catalogue mass works out to roughly 12.885 g per millimetre of the 34.925 mm bore. Static-first planning: the 0.357 kN of C0 per overall-width millimetre is the figure for belt tension peaks and rotor imbalance standstill loads on the 34.925 mm shaft, not the 21.6 kN L10 value. At the printed limiting speed of 3,200 r/min the mean diameter dm = 53.462 mm implies dn about 1.71x10^5 mm.r/min — the speed-demand figure used when comparing this insert with open deep-groove sizes of the same 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. Set-screw geometry on this size: the two 120 deg screws bear on the 34.925 mm shaft inside the 42.9 mm total width while the outer ring is only 19 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 34.925 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 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.
• Catalogue ratings belong to YAR 207-106-2RFGR/HV as the grub two hv execution; other order numbers of the YAR 207-106 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.