YSPAG-209-111 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-209-111 model number is decoded

Listed in SKF 17000 chapter 2, YSPAG 209-111 is a SKF ConCentra insert bearing with concentric stepped-sleeve locking and symmetrically extended inner ring, 42.8625x85x44.2 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. for inch shafts the order number carries the bore as whole-inches plus sixteenths: -111 = 42.862 mm, which is why this row sits beside, not on, the metric bore size. 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 42.8625x85x44.2 mm (1.688x3.346x1.74 in), outer ring 22 mm wide, C 33.2 kN, C0 21.6 kN, Pu 0.915 kN. The catalogue publishes a single speed ceiling, the limiting speed: 850 r/min; mass 690 g. Mass-to-load ratio for YSPAG-209-111: 20.783 g of catalogue mass per rated kN of C, and 16.098 g per millimetre of bore — useful when comparing executions of the same 42.8625x85 mm envelope on the drawing. Grease-life arithmetic is dominated by speed: at dn approx 0.54x10^5 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. The s1 26.7 mm dimension is printed for the locking zone — the pre-drive position of the ConCentra stepped sleeve — and it is verified at mounting, not recoverable from d/D/B alone. Selection figures for YSPAG 209-111: C0/C is 0.651, Pu 0.915 kN is 2.756 % of the 33.2 kN dynamic rating, and the 690 g catalogue mass works out to roughly 16.098 g per millimetre of the 42.8625 mm bore. Imperial procurement cross-check: 1.688 in bore, 3.346 in OD, 1.74 in overall width; the 690 g mass converts to 0.690 kg (24.3 oz) for the bill of materials. Reuse note for YSPAG-209-111: the stepped locking sleeve is a one-time clamping component in most over-torque cases; if the 42.8625 mm shaft shows a polished sleeve imprint after withdrawal, fit a new sleeve rather than re-driving the old one.

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 42.8625 mm shaft.
• Inspect the shaft before sleeve mounting: a single deep keyway burr or old screw-point dimple under the 44.2 mm-wide sleeve causes a local unclamped arc that later frets.
• 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.
• Catalogue ratings belong to YSPAG 209-111 as the concentra two ag execution; other order numbers of the YSPAG 209-111 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.