YAT-216-300 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-216-300 model number is decoded

Listed in SKF 17000 chapter 2, YAT 216-300 is a grub-screw insert bearing with the inner ring extended on one side, 76.19999999999999x140x55.5 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: -300 = 76.2 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 76.19999999999999x140x55.5 mm (3x5.512x2.185 in), outer ring 30 mm wide, C 72.8 kN, C0 53 kN, Pu 2.16 kN. The catalogue publishes a single speed ceiling, the limiting speed: 2,400 r/min; mass 2200 g. Static-first planning: the 0.955 kN of C0 per overall-width millimetre is the figure for belt tension peaks and rotor imbalance standstill loads on the 76.19999999999999 mm shaft, not the 72.8 kN L10 value. Bore-to-OD planning: OD 140 over bore 76.19999999999999 is a 1.837x step, while bore/overall-width gives 1.373; the spherical seat in the matching Y-housing must be specified to the 140 mm OD, not to a cylindrical housing bore. Fatigue-limit check: Pu 2.16 kN is the equivalent-load threshold under which the SKF adjusted-rating model credits very long life for YAT 216-300 — most belt-driven mounted-unit loads sit comfortably under 2.967 % of C. Pitch-diameter arithmetic: dm = (76.19999999999999+140)/2 = 108.1 mm; at the 2,400 r/min limiting speed the ball set runs at dn approx 2.59x10^5, reduced from an open bearing mainly by seal lip friction and the life-long grease fill. Load balance for documentation: C0 53 kN against C 72.8 kN gives a 0.728 ratio; mounted-unit positions with shock and standstill loading are normally checked on C0, while conveyor and fan duty are evaluated on the L10 figure. 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 76.19999999999999 mm shaft inside the 55.5 mm total width while the outer ring is only 30 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 76.19999999999999 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 39 mm s1 dimension is the screw seating geometry inside the 25.5 mm of extended inner ring; a shaft step that crowds that side prevents the screws reaching the shaft squarely.
• 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.
• Catalogue ratings belong to YAT 216-300 as the grub one open execution; other order numbers of the YAT 216-300 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.