54310 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 54310 model number is decoded

Listed in SKF 17000 chapter 5, 54310 is an ISO 104 double-direction thrust ball bearing, 40 mm bore and 95 mm OD, with a sphered housing washer and U seat washer, standing 64.7 mm high before installation. Construction is a five-component stack: one central shaft washer with tracks on both faces, two outward-facing housing washers and two cage sets, which lets one housing recess accept thrust from either direction. note the bore of 54310 is 40 mm by the dimension table: the double-direction series was deliberately aligned to the 51/53 washer sets with shifted codes, so the familiar 04=20 arithmetic does not apply here. no cage suffix means the standard stamped steel retainer — a pressed sheet-metal ball-cage assembly that covers the bulk of the thrust-ball assortment. Envelope 40×95×64.7 mm (1.575×3.74×2.547 in), 27.5 mm radial section, C 81.9 kN, C0 170 kN, Pu 6.3 kN. Mounted height H1 70 mm includes the U 310 seat washer; the bearing alone is 64.7 mm high. reference speed 1,700 r/min (thermal) and limiting speed 2,400 r/min (mechanical), catalogue mass 2300 g. Light-load floor: Pu = 6.3 kN is the equivalent-load threshold below which the SKF adjusted-life equation credits very long life for 54310; the number is 8 % of the 81.9 kN dynamic rating. At the printed limiting speed of 2,400 r/min the mean pitch diameter dm ≈ 67.5 mm implies a dn value around 162k mm·r/min; the 1,700 r/min reference speed is the thermal-planning value under catalogue load. Preload at the mechanical ceiling: repeating Fam ≈ A·(n·dm/1000)² with factor A 0.19 at the 2,400 r/min limiting speed raises the required axial preload to about 5.0 kN; the reference-speed value 2.5 kN is the thermal design point. Pitch-diameter arithmetic: dm = (40+95)/2 = 67.5 mm; at the 2,400 r/min limiting speed that corresponds to roughly 162k mm·r/min, the figure used when comparing cage speed demand across the thrust-ball series. Static-first selection data: 170 kN C0 spread across the 64.7 mm stack gives 2.6 kN of static rating per height millimetre, and the 2300 g mass/C0 ratio is about 14 g per static kN — crane-hook and screw positions are normally sized on these two figures. Bidirectional self-aligning note: TWO U seat washers are required for this order number, one behind each housing washer, and the catalogue H1 height includes them on both sides of the stack; the spherical interfaces accept initial misalignment in either load direction but are not pivots for continuous oscillation. At 40×95×64.7 mm the bearing carries C0 170 kN bidirectionally, but the two U interfaces share that load only if each is free to seat; torque the covers so the 5.3 mm-per-side washer steps are not pre-clamped.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The 81.9/170 kN ratings assume the spherical contacts are free to find their seat — a painted-over or shimmed U washer fixes the angle and turns the self-aligning bearing into an edge-loaded one.
• Assembly is a five-component stack (central shaft washer, two cage sets, two sphered housing washers) plus the two U seat washers in the housing registers; dry-build the arrangement by hand first to confirm both sides swivel freely.
• Minimum load factor A 0.19 applies to both load directions, and both brass pressed cage sets need lubricant reaching the upper track on a vertical shaft.
• Order TWO seat washers for 54310 — the designation U 310 pairs with one side and a second U washer (same number) with the other; the catalogue 70 mm H1 includes both.
• Ordering discipline for 54310: the catalogue page quotes 54310 plus U 310 and its 81.9/170 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.