53414-M 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 53414-M model number is decoded

53414 M is SKF's 70 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 70×150×63.6 mm U 414 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 14 encode the bore as 70 mm (code 14 × 5), the standard SKF bore-code rule shared with radial bearings. suffix M identifies a one-piece machined brass cage, ball-centred: the large-size and heavy-section option for higher speeds, shock loads and thin-film lubrication where a pressed cage would distort. Envelope 70×150×63.6 mm (2.756×5.906×2.504 in), 40.0 mm radial section, C 234 kN, C0 550 kN, Pu 19.3 kN. Mounted height H1 69 mm includes the U 414 seat washer; the bearing alone is 63.6 mm high. reference speed 1,400 r/min (thermal) and limiting speed 2,000 r/min (mechanical), catalogue mass 6500 g. Light-load floor: Pu = 19.3 kN is the equivalent-load threshold below which the SKF adjusted-life equation credits very long life for 53414 M; the number is 8 % of the 234 kN dynamic rating. Speed-ratio note for this exact unit: the reference speed is 1,400 r/min against a 2,000 r/min limiting speed, a reference-to-limit ratio of 0.70. Preload at the mechanical ceiling: repeating Fam ≈ A·(n·dm/1000)² with factor A 1.6 at the 2,000 r/min limiting speed raises the required axial preload to about 77.4 kN; the reference-speed value 37.9 kN is the thermal design point. Envelope economics: the 63.6 mm axial height over a 40.0 mm radial section yields 3.7 kN of dynamic capacity per height millimetre, and the bearing weighs 6500 g for 234 kN C — about 28 g per rated kN. Static-first selection data: 550 kN C0 spread across the 63.6 mm stack gives 8.6 kN of static rating per height millimetre, and the 6500 g mass/C0 ratio is about 12 g per static kN — crane-hook and screw positions are normally sized on these two figures. Heavy sphered-execution note: this M order number combines the machined brass ball-centred cage with the sphered housing washer and its U seat washer; it is the large-bore answer for hook blocks and pivots whose fabricated structure deflects — verify the spherical pair swivels freely under a light preload before the working load goes on. Under 550 kN static load the spherical interface of 53414 M must stay lubricated with a grease that does not separate at rest; a dry sphered contact under hook-block shock frets even though the ball tracks remain unworn.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The shaft washer remains the tight, ground-bore component on the 70 mm shaft; the sphered part is the HOUSING washer, and the U seat washer is the loose flat-backed part — the fitting order is shaft washer and cage set first, then housing washer and U 414 into the register.
• Minimum axial load still applies with factor A 1.6: a self-aligning seat does not prevent ball skidding, so provide spring preload or sufficient rotor weight at light load and speed.
• The sphered housing washer of 53414 M MUST run against the U 414 seat washer, a separate order number; mounted bare on a flat register, the convex back makes point contact that gouges the housing under load.
• Keep the sphered interface clean and lightly greased: scale, paint or grit between the washer back and U 414 locks the aligning function and frets under load; re-grease the contact at every overhaul.
• Catalogue ratings are SKF PUB BU/P1 17000 figures for 53414 M as the single sphered brass execution; other order numbers of the 53414 size are different products and may carry different ratings or seating geometry — always quote the full designation including the U 414 seat washer when purchasing.