YAR-208-108-2RF-VE495 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-208-108-2RF-VE495 model number is decoded

Listed in SKF 17000 chapter 2, YAR 208-108-2RF/VE495 is a grub-screw insert bearing with the inner ring extended on both sides, 38.099999999999994x80x49.2 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. 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: -108 = 38.1 mm, which is why this row sits beside, not on, the metric bore size. VE495 denotes galvanized rings plus food-compatible sealing components and grease, aimed at humid, cleaned-down installations rather than submerged chemical duty. Envelope 38.099999999999994x80x49.2 mm (1.5x3.15x1.937 in), outer ring 21 mm wide, C 30.7 kN, C0 19 kN, Pu 0.8 kN. The catalogue publishes a single speed ceiling, the limiting speed: 2,800 r/min; mass 650 g. Fatigue-limit check: Pu 0.8 kN is the equivalent-load threshold under which the SKF adjusted-rating model credits very long life for YAR 208-108-2RF/VE495 — most belt-driven mounted-unit loads sit comfortably under 2.606 % of C. Inner-geometry cross-reference: the catalogue shoulder diameters (d1 51.8 mm) set the shaft-abutment and sleeve limits; an abutment larger than these numbers contacts the seal or the inner flinger. Grease-life arithmetic is dominated by speed: at dn approx 1.65x10^5 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. Static-first planning: the 0.386 kN of C0 per overall-width millimetre is the figure for belt tension peaks and rotor imbalance standstill loads on the 38.099999999999994 mm shaft, not the 30.7 kN L10 value. Bore-to-OD planning: OD 80 over bore 38.099999999999994 is a 2.1x step, while bore/overall-width gives 0.774; the spherical seat in the matching Y-housing must be specified to the 80 mm OD, not to a cylindrical housing bore. Zinc-coated food-range note: the VE495 plating is a functional surface, not cosmetic; clean the bore and shaft WITHOUT steel brushes or aggressive descalers, mount dry or with the approved food-grade mounting paste, and touch up damaged plating spots before commissioning the wash-down area. Set-screw geometry on this size: the two 120 deg screws bear on the 38.099999999999994 mm shaft inside the 49.2 mm total width while the outer ring is only 21 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 38.099999999999994 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 30.2 mm s1 dimension is the screw seating geometry inside the 28.2 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 208-108-2RF/VE495 as the grub two ve495 execution; other order numbers of the YAR 208-108 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.