YAR-204-2RF-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-204-2RF-VE495 model number is decoded

Listed in SKF 17000 chapter 2, YAR 204-2RF/VE495 is a grub-screw insert bearing with the inner ring extended on both sides, 20x47x31 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. the size code 204 carries the usual bore arithmetic — 20 mm — while the leading 2 marks the ISO 15 diameter series 2 sphered-OD envelope. VE495 denotes galvanized rings plus food-compatible sealing components and grease, aimed at humid, cleaned-down installations rather than submerged chemical duty. Envelope 20x47x31 mm (0.787x1.85x1.22 in), outer ring 14 mm wide, C 12.7 kN, C0 6.55 kN, Pu 0.28 kN. The catalogue publishes a single speed ceiling, the limiting speed: 5,000 r/min; mass 150 g. Inner-geometry cross-reference: the catalogue shoulder diameters (d1 28.2 mm) set the shaft-abutment and sleeve limits; an abutment larger than these numbers contacts the seal or the inner flinger. Outer-vs-overall width: the outer ring is 14 mm wide inside the 31 mm total, so the extended inner ring accounts for 0.548 of the overall width (8.5 mm of axial projection per side). Width accounting on this execution: 31 mm overall and 14 mm outer-ring width leave the housing designer 17 mm of inner-ring projection to accommodate the locking arrangement. Static-first planning: the 0.211 kN of C0 per overall-width millimetre is the figure for belt tension peaks and rotor imbalance standstill loads on the 20 mm shaft, not the 12.7 kN L10 value. Capacity density: 12.7 kN from 0.150 kg of bearing steel is about 84.667 kN per kilogram, and per width millimetre the 31 mm unit carries 0.41 kN of dynamic capacity. 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 20 mm shaft inside the 31 mm total width while the outer ring is only 14 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

• The 18.3 mm s1 dimension is the screw seating geometry inside the 17 mm of extended inner ring; a shaft step that crowds that side prevents the screws reaching the shaft squarely.
• Do not specify the 20 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 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.
• The 12.7/6.55 kN figures belong specifically to YAR 204-2RF/VE495; HV stainless, AG agricultural and VE495 zinc-plated variants of the same envelope publish derated values, so write the complete order number including suffixes on the purchase and maintenance records.