YSPAG-206 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 YSPAG-206 model number is decoded

Listed in SKF 17000 chapter 2, YSPAG 206 is a SKF ConCentra insert bearing with concentric stepped-sleeve locking and symmetrically extended inner ring, 30x62x37.2 mm overall, whose convex spherical outer ring pivots in the spherical bore of a Y-pillow, Y-flange or take-up housing. Construction is a sealed deep-groove insert, a symmetrically extended inner ring and the stepped ConCentra sleeve — uniform grip, minimal run-out, no shaft damage from screw points or an eccentric mass. reading YSP: SKF ConCentra technology locks the shaft through a stepped sleeve that contracts uniformly, chosen for high run-out accuracy and for shafts that must not be marked by screw points or an eccentric. the size code 206 carries the usual bore arithmetic — 30 mm (code 06 x 5) — while the leading 2 marks the ISO 15 diameter series 2 sphered-OD envelope. AG is the application variant for agricultural equipment — the same bore and OD as the standard sealed size but an application-specific grease/seal build and a conservative limiting speed for field machinery. Envelope 30x62x37.2 mm (1.181x2.441x1.465 in), outer ring 18 mm wide, C 19.5 kN, C0 11.2 kN, Pu 0.475 kN. The catalogue publishes a single speed ceiling, the limiting speed: 1,200 r/min; mass 300 g. Imperial procurement cross-check: 1.181 in bore, 2.441 in OD, 1.465 in overall width; the 300 g mass converts to 0.300 kg (10.6 oz) for the bill of materials. Fillet discipline: the printed minimum-fillet limit means shaft and housing fillets must stay under that radius; a fillet that bottoms the 30x62 mm insert on its chamfer tilts the whole spherical seat. Grease-life arithmetic is dominated by speed: at dn approx 0.55x10^5 the sealed-for-life fill is planned for the catalogue's grease-life regime, which is why the AG variant caps speed so aggressively, and high-temperature mounts shorten both even when load is light. Mass-to-load ratio for YSPAG-206: 15.385 g of catalogue mass per rated kN of C, and 10 g per millimetre of bore — useful when comparing executions of the same 30x62 mm envelope on the drawing. Inner-geometry cross-reference: the catalogue shoulder diameters (d1 39.7 mm, d2 48 mm) set the shaft-abutment and sleeve limits; an abutment larger than these numbers contacts the seal or the inner flinger. Sleeve geometry: the ConCentra stepped sleeve occupies the symmetric extension up to the 37.2 mm overall width while the sphered outer ring stays 18 mm wide — uniform sleeve contraction is why run-out stays low at 30 mm bore.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The SB shortened-inner-ring ConCentra unit needs its matching mounting sleeve and procedure; substituting a standard YSP sleeve or a generic drift is the usual cause of crooked drive-up on the 30 mm shaft.
• ConCentra solves run-out and fretting but not gross misalignment — the housing spherical seat still carries that function; do not use the sleeve grip as an excuse to skip housing alignment.
• Inspect the shaft before sleeve mounting: a single deep keyway burr or old screw-point dimple under the 37.2 mm-wide sleeve causes a local unclamped arc that later frets.
• Catalogue ratings belong to YSPAG 206 as the concentra two ag execution; other order numbers of the YSPAG 206 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.