YAR-220-2F 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-220-2F model number is decoded

Listed in SKF 17000 chapter 2, YAR 220-2F is a grub-screw insert bearing with the inner ring extended on both sides, 100x180x98.4 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. the size code 220 carries the usual bore arithmetic — 100 mm (code 20 x 5) — while the leading 2 marks the ISO 15 diameter series 2 sphered-OD envelope. -2F decodes to contact seals with additional plain flingers, one set per side; the unit is grease-filled for life and the flinger is why the sealed width exceeds the open one-side execution. Envelope 100x180x98.4 mm (3.937x7.087x3.874 in), outer ring 40 mm wide, C 124 kN, C0 93 kN, Pu 3.35 kN. The catalogue publishes a single speed ceiling, the limiting speed: 1,900 r/min; mass 5600 g. Pitch-diameter arithmetic: dm = (100+180)/2 = 140 mm; at the 1,900 r/min limiting speed the ball set runs at dn approx 2.66x10^5, reduced from an open bearing mainly by seal lip friction and the life-long grease fill. Static-first planning: the 0.945 kN of C0 per overall-width millimetre is the figure for belt tension peaks and rotor imbalance standstill loads on the 100 mm shaft, not the 124 kN L10 value. Rating split for the maintenance file: dynamic 124 kN (L10), static 93 kN (s0 shock check), fatigue 3.35 kN (adjusted life) — three separate uses for YAR 220-2F, none interchangeable with another. Bore-to-OD planning: OD 180 over bore 100 is a 1.8x step, while bore/overall-width gives 1.016; the spherical seat in the matching Y-housing must be specified to the 180 mm OD, not to a cylindrical housing bore. Width accounting on this execution: 98.4 mm overall and 40 mm outer-ring width leave the housing designer 58.4 mm of inner-ring projection to accommodate the locking arrangement. Both-sides sealed order-number note: the two set screws clamp through dimpled recesses in the extended inner ring; tighten alternately to the catalogue procedure and retighten after the first run-in period, because the -2F flingers keep dust out but cannot compensate for a screw that walked loose. Set-screw geometry on this size: the two 120 deg screws bear on the 100 mm shaft inside the 98.4 mm total width while the outer ring is only 40 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 100 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 63.4 mm s1 dimension is the screw seating geometry inside the 58.4 mm of extended inner ring; a shaft step that crowds that side prevents the screws reaching the shaft squarely.
• Catalogue ratings belong to YAR 220-2F as the grub two f execution; other order numbers of the YAR 220 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.