YAR-204-012-2RF-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-204-012-2RF-VE495 model number is decoded

The YAR2 series order number YAR 204-012-2RF/VE495 is a SKF insert bearing (Y-bearing) for a 19.049999999999997 mm (0.75 in) shaft: grub-screw insert bearing with the inner ring extended on both sides, built to the ISO 15 diameter-series envelope with a sphered OD of 47 mm. Inside is a sealed deep-groove ball set with an extended inner ring, two set screws 120 deg apart doing the shaft locking, and the sphered outer ring providing the unit's static alignment pivot. reading the YAR basic designation: set-screw shaft locking with the screws spaced 120 deg apart; YAR carries the symmetric, both-sides-extended inner ring. inch bore code -012 decodes as 0" +12/16, i.e. 19.05 mm; the metric coded size YAR 204 shares the same envelope but its bore is the metric value, not this one. the VE495 suffix packages zinc-coated rings with stainless-reinforced food-grade seals/flingers and food-grade lubricant — the wash-down-resistant counterpart of the standard -2RF bearing. Envelope 19.049999999999997x47x31 mm (0.75x1.85x1.22 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 160 g. Rating split for the maintenance file: dynamic 12.7 kN (L10), static 6.55 kN (s0 shock check), fatigue 0.28 kN (adjusted life) — three separate uses for YAR 204-012-2RF/VE495, none interchangeable with another. 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. 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 0.211 kN of C0 per overall-width millimetre is the figure for belt tension peaks and rotor imbalance standstill loads on the 19.049999999999997 mm shaft, not the 12.7 kN L10 value. At the printed limiting speed of 5,000 r/min the mean diameter dm = 33.025 mm implies dn about 1.65x10^5 mm.r/min — the speed-demand figure used when comparing this insert with open deep-groove sizes of the same 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 19.049999999999997 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

• 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.
• Do not specify the 19.049999999999997 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 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.
• Ordering discipline for the 19.049999999999997 mm size: the chapter lists several executions side by side (YAR2 locking style x seal package x application variant); a bare-number substitution needs a fresh dimension, speed and rating check rather than a like-for-like assumption.