YSP-205-100-SB-2F 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 YSP-205-100-SB-2F model number is decoded

Listed in SKF 17000 chapter 2, YSP 205-100 SB-2F is a SKF ConCentra insert bearing with concentric stepped-sleeve locking and symmetrically extended inner ring, 25.4x52x33.2 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: -100 = 25.4 mm, which is why this row sits beside, not on, the metric bore size. -2F decodes to contact seals with additional plain flingers, one set per side; the unit is grease-filled for life and the flinger is why the sealed width exceeds the open one-side execution. Envelope 25.4x52x33.2 mm (1x2.047x1.307 in), outer ring 15 mm wide, C 14 kN, C0 7.8 kN, Pu 0.335 kN. The catalogue publishes a single speed ceiling, the limiting speed: 7,000 r/min; mass 180 g. Selection figures for YSP 205-100 SB-2F: C0/C is 0.557, Pu 0.335 kN is 2.393 % of the 14 kN dynamic rating, and the 180 g catalogue mass works out to roughly 7.087 g per millimetre of the 25.4 mm bore. Envelope arithmetic: the radial section from 25.4 mm bore to 52 mm OD is 13.3 mm; dividing C 14 kN by that section gives 1.053 kN per section millimetre, and the 33.2 mm overall width is 2.496x the section. Mass-to-load ratio for YSP-205-100-SB-2F: 12.857 g of catalogue mass per rated kN of C, and 7.087 g per millimetre of bore — useful when comparing executions of the same 25.4x52 mm envelope on the drawing. Spherical-seat note in numbers: the 52 mm OD is ground spherical, so the self-aligning pivot happens on a circle roughly pi x 38.7 = 121.58 mm in mean circumference — keep that interface greased, because corrosion locking turns the pivot into a fixed misaligned mount. Pitch-diameter arithmetic: dm = (25.4+52)/2 = 38.7 mm; at the 7,000 r/min limiting speed the ball set runs at dn approx 2.71x10^5, reduced from an open bearing mainly by seal lip friction and the life-long grease fill. ConCentra mounting note: the SB shortened-inner-ring sleeve is driven AXIALLY with the proper sleeve/drift until it seats against the abutment — driving at an angle burrs the stepped sleeve and destroys the concentricity advantage; removal needs the matching withdrawal technique, never a puller on the flingers. Reuse note for YSP-205-100-SB-2F: the stepped locking sleeve is a one-time clamping component in most over-torque cases; if the 25.4 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

• Inspect the shaft before sleeve mounting: a single deep keyway burr or old screw-point dimple under the 33.2 mm-wide sleeve causes a local unclamped arc that later frets.
• 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 25.4 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.
• The 14/7.8 kN figures belong specifically to YSP 205-100 SB-2F; HV stainless, AG agricultural and VE495 zinc-plated variants of the same envelope publish derated values, so write the complete order number including suffixes on the purchase and maintenance records.