YET-204-VL065 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 YET-204-VL065 model number is decoded

YET 204/VL065 is SKF's 20 mm-bore eccentric-locking-collar insert bearing with a one-side-extended inner ring in the YEL2 series — a Y-bearing with a spherically ground outside surface for static self-alignment inside a matching SKF Y-housing, boundary dimensions 20x47x21 mm. The deep-groove ball set is built into an extended inner ring carrying a separate eccentric locking collar; turning the collar against its eccentric seat pinches the shaft, and the sphered outer ring self-aligns in the housing. the YET prefix identifies the eccentric-locking-collar design: a separate eccentric collar turns against a matching eccentric on the extended inner ring to pinch the shaft, extended one side. 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. /VL065 means the inner-ring bore and side faces are zinc coated: corrosion protection on the shaft seating and abutment faces without changing the seal package or the carbon-steel outer ring. Envelope 20x47x21 mm (0.787x1.85x0.827 in), outer ring 14 mm wide, C 12.7 kN, C0 6.55 kN, Pu 0.28 kN. Mounted width B1 30.5 mm includes the eccentric collar. The catalogue publishes a single speed ceiling, the limiting speed: 8,500 r/min; mass 160 g. Width accounting: B1 30.5 mm covers the bearing WITH its eccentric locking collar against 21 mm for the bearing itself and 14 mm outer-ring width; housing axial space is drawn to B1, seal replacement space to B. Capacity density: 12.7 kN from 0.160 kg of bearing steel is about 79.375 kN per kilogram, and per width millimetre the 21 mm unit carries 0.605 kN of dynamic capacity. At the printed limiting speed of 8,500 r/min the mean diameter dm = 33.5 mm implies dn about 2.85x10^5 mm.r/min — the speed-demand figure used when comparing this insert with open deep-groove sizes of the same bore. Load balance for documentation: C0 6.55 kN against C 12.7 kN gives a 0.516 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. Selection figures for YET 204/VL065: C0/C is 0.516, Pu 0.28 kN is 2.205 % of the 12.7 kN dynamic rating, and the 160 g catalogue mass works out to roughly 8 g per millimetre of the 20 mm bore. Zinc-coated one-side collar note: the VL065 layer protects the inner-ring bore and abutment faces; the eccentric collar itself is uncoated, so grease the collar-back interface to keep the zinc-free face from corroding fast to the inner ring. Collar geometry for this size: over the 14 mm outer-ring width the inner ring runs to 21 mm overall (30.5 mm including the eccentric collar width), giving the collar its eccentric seating face clear of the seal.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Never pin or weld the eccentric collar: the controlled eccentric friction is the locking principle, and pinning turns a demountable insert into a shaft-replacement job.
• Overall width 30.5 mm includes collar space — a housing sized for a grub-screw insert of the same OD can be too narrow axially for the YET collar.
• The eccentric collar is handed to running direction; fit it wrong on the 20 mm shaft and self-tightening becomes self-loosening. Mark the shaft rotation before stripping any YEL2 collar unit.
• Ordering discipline for the 20 mm size: the chapter lists several executions side by side (YEL2 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.