YAR-213-208-2F 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-213-208-2F model number is decoded

YAR 213-208-2F is SKF's 63.5 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 63.5x120x68.3 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 -208 tail codes the bore in inches for inch-shaft bearings: 2 whole inch 8/16 in = 63.5 mm (first digit whole inches, next two sixteenths of an inch). suffix -2F means an NBR rubber contact seal plus a plain pressed-steel flinger on EACH side: the lip rides the extended inner ring while the flinger sheds coarse contamination before it reaches the lip. Envelope 63.5x120x68.3 mm (2.5x4.724x2.689 in), outer ring 27 mm wide, C 57.2 kN, C0 40 kN, Pu 1.7 kN. The catalogue publishes a single speed ceiling, the limiting speed: 3,000 r/min; mass 1850 g. Outer-vs-overall width: the outer ring is 27 mm wide inside the 68.3 mm total, so the extended inner ring accounts for 0.605 of the overall width (20.65 mm of axial projection per side). Fatigue-limit check: Pu 1.7 kN is the equivalent-load threshold under which the SKF adjusted-rating model credits very long life for YAR 213-208-2F — most belt-driven mounted-unit loads sit comfortably under 2.972 % of C. Selection figures for YAR 213-208-2F: C0/C is 0.699, Pu 1.7 kN is 2.972 % of the 57.2 kN dynamic rating, and the 1850 g catalogue mass works out to roughly 29.134 g per millimetre of the 63.5 mm bore. The s1 42.9 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. Grease-life arithmetic is dominated by speed: at dn approx 2.75x10^5 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. 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 63.5 mm shaft inside the 68.3 mm total width while the outer ring is only 27 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 63.5 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 42.9 mm s1 dimension is the screw seating geometry inside the 41.3 mm of extended inner ring; a shaft step that crowds that side prevents the screws reaching the shaft squarely.
• Ordering discipline for the 63.5 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.