YAT-205-015 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 YAT-205-015 model number is decoded

Listed in SKF 17000 chapter 2, YAT 205-015 is a grub-screw insert bearing with the inner ring extended on one side, 23.8125x52x27.2 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. YAT is SKF's grub-screw insert design — a single extended inner-ring side housing the two 120 deg set screws. for inch shafts the order number carries the bore as whole-inches plus sixteenths: -015 = 23.813 mm, which is why this row sits beside, not on, the metric bore size. the bare designation means no factory seal package: unlike the -2F executions this bearing relies on enclosure by the Y-housing and its own re-greasing path, which is why it is normally specified inside well-sealed plummer and flange units. Envelope 23.8125x52x27.2 mm (0.938x2.047x1.071 in), outer ring 15 mm wide, C 14 kN, C0 7.8 kN, Pu 0.335 kN. The catalogue publishes a single speed ceiling, the limiting speed: 7,000 r/min; mass 170 g. Outer-vs-overall width: the outer ring is 15 mm wide inside the 27.2 mm total, so the extended inner ring accounts for 0.449 of the overall width (12.2 mm of axial projection on the locking side). Grease-life arithmetic is dominated by speed: at dn approx 2.65x10^5 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. Speed ceiling of 7,000 r/min is the catalogue mechanical limit for THIS execution; seal lip and flinger drag, not steel fatigue, are normally what cap it, so real fan duty is planned well below it. Spherical-seat note in numbers: the 52 mm OD is ground spherical, so the self-aligning pivot happens on a circle roughly pi x 37.906 = 119.085 mm in mean circumference — keep that interface greased, because corrosion locking turns the pivot into a fixed misaligned mount. Fatigue-limit check: Pu 0.335 kN is the equivalent-load threshold under which the SKF adjusted-rating model credits very long life for YAT 205-015 — most belt-driven mounted-unit loads sit comfortably under 2.393 % of C. Single-extension fitting note: with the inner ring extended only on the locking side, orient the open (non-extended) face toward the shaft step or housing shoulder as the drawing shows — reversed, the set screws end up unsupported by the abutment and the shortened side offers no seal land at all. Set-screw geometry on this size: the two 120 deg screws bear on the 23.8125 mm shaft inside the 27.2 mm total width while the outer ring is only 15 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 23.8125 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 one-side YAT 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 19.5 mm s1 dimension is the screw seating geometry inside the 12.2 mm of extended inner ring; a shaft step that crowds that side prevents the screws reaching the shaft squarely.
• Catalogue ratings belong to YAT 205-015 as the grub one open execution; other order numbers of the YAT 205-015 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.