53411 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 53411 model number is decoded

53411 is SKF's 55 mm-bore single-direction thrust ball bearing in the 53400 series to the ISO 104 dimension plan, with a sphered housing washer paired to a U seat washer, measuring 55×120×50.5 mm U 411 seat washer companion included in the mounted H1 dimension. The separable set comprises a shaft washer (ground bore, tight fit on the shaft), a loose-bore housing washer and one ball-cage assembly, reacting axial force in one direction and carrying no radial load. in the 53xxx designation the 3 marks a single-direction bearing whose housing washer has a sphered (convex) seating surface, intended to run against the matching U seat washer; the third digit 2–4 grades the section. the final two digits 11 encode the bore as 55 mm (code 11 × 5), the standard SKF bore-code rule shared with radial bearings. with no cage suffix this is the standard execution with a stamped sheet-steel ball-cage assembly (pressed cage) — the light, quiet and economical cage for small and medium thrust-ball sizes. Envelope 55×120×50.5 mm (2.165×4.724×1.988 in), 32.5 mm radial section, C 195 kN, C0 400 kN, Pu 14.6 kN. Mounted height H1 55 mm includes the U 411 seat washer; the bearing alone is 50.5 mm high. reference speed 1,700 r/min (thermal) and limiting speed 2,400 r/min (mechanical), catalogue mass 3100 g. Speed planning separates the two ceilings mechanically: the pressed cage and balls tolerate 2,400 r/min while thermal balance under catalogue load sets the 1,700 r/min reference; at dm ≈ 87.5 mm the corresponding dn is approximately 210k mm·r/min. Bore-to-OD planning: OD 120 over bore 55 is a 2.18× step for this size, and the 50.5 mm height gives a bore/height ratio of 1.09; use these ratios when the housing recess around the 55 mm shaft is the first constraint. Track-circle loading: per millimetre of mean track circumference the 195 kN dynamic rating corresponds to roughly 0.71 kN/mm of π·dm track, a useful comparison against the other dimension series of the 55 mm bore. Pitch-diameter arithmetic: dm = (55+120)/2 = 87.5 mm; at the 2,400 r/min limiting speed that corresponds to roughly 210k mm·r/min, the figure used when comparing cage speed demand across the thrust-ball series. Washer-annulus check: the π/4·(D²−d²) contact annulus of 53411 covers about 8,934 mm², distributing C0 400 kN over a mean track circle of π·dm ≈ 275 mm. Sphered-seating order-number note: the convex back face of the housing washer is finish-ground spherical and is delivered to mate with the separately ordered U seat washer, which presents a flat face to the housing and a concave face to the washer; together they accommodate initial static misalignment, but the pair must be kept clean, greased at the spherical interface and never replaced by a washer-on-flat-steel makeshift. Procurement reminder for this specific page: 53411 and U 411 are two order numbers shipping as two articles; the installed 55 mm H1 rather than 50.5 mm H is the dimension the housing drawing must carry.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Minimum axial load still applies with factor A 0.79: a self-aligning seat does not prevent ball skidding, so provide spring preload or sufficient rotor weight at light load and speed.
• The self-aligning feature is checked at commissioning by hand: with the shaft under no load the assembly must swivel and settle; a stiff spherical seat means dirt, a mismatched U washer, or a register bored off-axis.
• The spherical seat accommodates INITIAL static misalignment between shaft and housing; it is not a swivel for continuous oscillation, and the bearing still carries pure axial load with no radial capacity.
• Keep the sphered interface clean and lightly greased: scale, paint or grit between the washer back and U 411 locks the aligning function and frets under load; re-grease the contact at every overhaul.
• The 195/400 kN figures belong to 53411 specifically (the single sphered pressed steel execution of 53411); suffixed, sphered and counterpart-series order numbers are separate articles, and U 411 is ordered separately, so write the complete designation on the order and the maintenance record.