53212 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 53212 model number is decoded

53212 is SKF's 60 mm-bore single-direction thrust ball bearing in the 53200 series to the ISO 104 dimension plan, with a sphered housing washer paired to a U seat washer, measuring 60×95×28 mm U 212 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 12 encode the bore as 60 mm (code 12 × 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 60×95×28 mm (2.362×3.74×1.102 in), 17.5 mm radial section, C 59.2 kN, C0 140 kN, Pu 5.1 kN. Mounted height H1 31 mm includes the U 212 seat washer; the bearing alone is 28 mm high. reference speed 2,600 r/min (thermal) and limiting speed 3,600 r/min (mechanical), catalogue mass 820 g. Sizing arithmetic on the 60 mm bore: 59.2 kN C over the 17.5 mm radial section gives 3.4 kN per section millimetre, and the 28 mm stack height is 1.60× that section — proportions typical of a 53200 thrust section. Imperial cross-check for procurement drawings: 2.362 in bore, 3.74 in OD, 1.102 in height, and the 820 g catalogue mass converts to 0.820 kg (28.9 oz). Mass and section check: 820 g inside the 60×95×28 mm outline leaves a 17.5 mm radial section, and the 140 kN static rating is 2.36× the dynamic rating — plan static safety and minimum preload against those figures. Rating split for documentation: dynamic 59.2 kN (L10 life), static 140 kN (safety factor s0), fatigue limit 5.1 kN (adjusted life) — three different uses of three different numbers for 53212, none interchangeable with another. Selection figures for 53212: the C0/C ratio is 2.36, Pu 5.1 kN is about 9 % of C, and the catalogue mass works out to roughly 14 g per millimetre of bore; the printed minimum-load factor is A 0.12. 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: 53212 and U 212 are two order numbers shipping as two articles; the installed 31 mm H1 rather than 28 mm H is the dimension the housing drawing must carry.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Keep the sphered interface clean and lightly greased: scale, paint or grit between the washer back and U 212 locks the aligning function and frets under load; re-grease the contact at every overhaul.
• 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.
• Minimum axial load still applies with factor A 0.12: a self-aligning seat does not prevent ball skidding, so provide spring preload or sufficient rotor weight at light load and speed.
• Dimension the housing to the 31 mm mounted height H1 (bearing plus U 212), not the 28 mm bearing height H — confusing the two is a recurring drawing error for the 53-series.
• Ordering discipline for 53212: the catalogue page quotes 53212 plus U 212 and its 59.2/140 kN ratings as one exact article; bare-number substitutions from another series or brand need a fresh dimension and rating check, not a like-for-like assumption.