YAR-208-108-2RFGR-HV 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-208-108-2RFGR-HV model number is decoded

The YAR2 series order number YAR 208-108-2RFGR/HV is a SKF insert bearing (Y-bearing) for a 38.099999999999994 mm (1.5 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 80 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 -108 decodes as 1" +8/16, i.e. 38.1 mm; the metric coded size YAR 208 shares the same envelope but its bore is the metric value, not this one. the HV suffix means stainless rings and balls with food-grade compliant seals and grease (this article also carries the GR outside-surface lubrication groove); capacity is derated versus the carbon-steel part. Envelope 38.099999999999994x80x49.2 mm (1.5x3.15x1.937 in), outer ring 21 mm wide, C 24.7 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. Outer-vs-overall width: the outer ring is 21 mm wide inside the 49.2 mm total, so the extended inner ring accounts for 0.573 of the overall width (14.1 mm of axial projection per side). 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 24.7 kN L10 value. Load balance for documentation: C0 19 kN against C 24.7 kN gives a 0.769 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. 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. 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. Stainless food-range note: HV parts trade some capacity for corrosion resistance and food-compatible lubrication, and the printed limiting speed is set for that fill; do not top up with ordinary mineral grease in service — mixing greases can harden the food-grade fill and seize the seals. Service tip for YAR-208-108-2RFGR-HV: dimpled or drilled shaft spots under the screw points are sometimes specified on shock duty, but the standard mounting relies on point indentation alone — never substitute longer screws that reach the 20.95 mm radial section.

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 208-108-2RFGR/HV as the grub two hv 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.