YAR-203-010-2F 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-203-010-2F model number is decoded

Listed in SKF 17000 chapter 2, YAR 203-010-2F is a grub-screw insert bearing with the inner ring extended on both sides, 15.875x40x27.4 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. for inch shafts the order number carries the bore as whole-inches plus sixteenths: -010 = 15.875 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 15.875x40x27.4 mm (0.625x1.575x1.079 in), outer ring 12 mm wide, C 9.56 kN, C0 4.75 kN, Pu 0.2 kN. The catalogue publishes a single speed ceiling, the limiting speed: 9,500 r/min; mass 100 g. Inner-geometry cross-reference: the catalogue shoulder diameters (d1 24.2 mm) set the shaft-abutment and sleeve limits; an abutment larger than these numbers contacts the seal or the plain flinger. Selection figures for YAR 203-010-2F: C0/C is 0.497, Pu 0.2 kN is 2.092 % of the 9.56 kN dynamic rating, and the 100 g catalogue mass works out to roughly 6.299 g per millimetre of the 15.875 mm bore. Capacity density: 9.56 kN from 0.100 kg of bearing steel is about 95.6 kN per kilogram, and per width millimetre the 27.4 mm unit carries 0.349 kN of dynamic capacity. Load balance for documentation: C0 4.75 kN against C 9.56 kN gives a 0.497 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. Imperial procurement cross-check: 0.625 in bore, 1.575 in OD, 1.079 in overall width; the 100 g mass converts to 0.100 kg (3.5 oz) for the bill of materials. 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 15.875 mm shaft inside the 27.4 mm total width while the outer ring is only 12 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 15.875 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 15.9 mm s1 dimension is the screw seating geometry inside the 15.4 mm of extended inner ring; a shaft step that crowds that side prevents the screws reaching the shaft squarely.
• 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.
• Catalogue ratings belong to YAR 203-010-2F as the grub two f execution; other order numbers of the YAR 203-010 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.