14131-14276 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch single-row TRB) · extracted 2026-09-28

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.2 inch single-row TRB); 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 14131-14276 model number is decoded

14131 is a single-row tapered roller bearing in the 14000-series inch series: a separable cone-and-cup design for combined radial and one-direction axial load, listed by SKF in SKF catalogue PUB BU/P1 17000.Digit by digit, 14131 reads as cone reference / cup reference in the 14000-series inch series; the 33.338 mm bore, 69.012 mm OD and 19.845 mm width are the metric equivalents of the original inch boundary values. SKF lists the plain number as the basic execution; letter suffixes such as B denote a steeper contact angle and are different order numbers. The 7.35 kN Pu figure feeds the adjusted-life equation at contaminated or partial-film conditions, and the 1.02 C0/C balance shows this execution is tuned to thrust-heavy combined loads rather than pure radial running. Mounting practice for 14131: the rotating cone takes the interference fit (k5 on a 33.338 mm shaft), the cup slides for axial location, and reversing-thrust duty demands a paired O/X set rather than one bearing. Load system: the 65.8 kN basic dynamic rating C and 67 kN static rating C0 give a C0/C balance of 1.02, and dividing C by the 33.338 mm bore yields 1.97 kN per millimetre of journal — a density metric that compares across families; the 7.35 kN fatigue limit Pu is the floor beneath which the adjusted-life calculation drops below acceptable L10 hours for a 33.338 mm shaft carrying variable duty. Cone versus cup responsibility in 14131: the 14131 cone carries the 33.338 mm bore, rollers and pressed-steel cage; the 14276 cup carries the 69.012 mm OD raceway, the roller-seating rib and the outer press-fit surface. The two references are not interchangeable halves.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On this 33.338 mm bore, interference and temperature rise consume clearance inside a preloaded pair; calculate the residual clearance after mounting and at operating temperature — an over-tight 14131 pair heats, loses setting control and smears the roller-rib contact.
• The 14000-series inch series at 33.338 mm bore (69.012×19.845 mm) follows the Timken cone/cup convention; substitutions must match both the cone and cup reference exactly — interchanging with another series or a metric 3xxxx bearing of the same bore changes OD, width and contact angle, so re-run the pair setting and shoulder-diameter checks before swapping.
• Setting is a design value, not an assembly feel: excessive preload in the 14131 pair raises operating temperature and can trigger thermal runaway, while too little lets the rollers skid and smear the raceway under light load.
• The tapered contact angle creates an induced axial load under pure radial force; include it in the 14131 rating calculation (and account for it in both bearings of a pair) or the unloaded bearing skids its rollers.
• Catalogue reference speed and limiting speed are different limits: the 8,000 r/min reference is a thermal criterion under load, while the 10,000 r/min limiting value is the mechanical ceiling — observe both.
• The 65.8/67 kN ratings are SKF catalogue 17000 values for the basic execution; SKF can revise internal geometry without changing the order number, so keep the catalogue version (PUB BU/P1 17000/1 EN, 2018) with the specification and re-verify for critical drives.
• SKF lists several executions of 14131 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 14131/14276 designation when purchasing and match the execution to the mounting arrangement.