YAR-215-215-2F 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-215-215-2F model number is decoded

Listed in SKF 17000 chapter 2, YAR 215-215-2F is a grub-screw insert bearing with the inner ring extended on both sides, 74.6125x130x73.3 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: -215 = 74.612 mm, which is why this row sits beside, not on, the metric bore size. -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 74.6125x130x73.3 mm (2.938x5.118x2.886 in), outer ring 29 mm wide, C 66.3 kN, C0 49 kN, Pu 2.04 kN. The catalogue publishes a single speed ceiling, the limiting speed: 2,600 r/min; mass 2150 g. Selection figures for YAR 215-215-2F: C0/C is 0.739, Pu 2.04 kN is 3.077 % of the 66.3 kN dynamic rating, and the 2150 g catalogue mass works out to roughly 28.816 g per millimetre of the 74.6125 mm bore. Grease-life arithmetic is dominated by speed: at dn approx 2.66x10^5 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. Capacity density: 66.3 kN from 2.150 kg of bearing steel is about 30.837 kN per kilogram, and per width millimetre the 73.3 mm unit carries 0.905 kN of dynamic capacity. The s1 46.3 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. Inner-geometry cross-reference: the catalogue shoulder diameters (d1 92 mm) set the shaft-abutment and sleeve limits; an abutment larger than these numbers contacts the seal or the plain flinger. 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 74.6125 mm shaft inside the 73.3 mm total width while the outer ring is only 29 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

• 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.
• Do not specify the 74.6125 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 46.3 mm s1 dimension is the screw seating geometry inside the 44.3 mm of extended inner ring; a shaft step that crowds that side prevents the screws reaching the shaft squarely.
• Ordering discipline for the 74.6125 mm size: the chapter lists several executions side by side (YAR2 locking style x seal package x application variant); a bare-number substitution needs a fresh dimension, speed and rating check rather than a like-for-like assumption.