HM801346X-310 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 HM801346X-310 model number is decoded

Catalogue mass 770 g for the 38.1×82.55×29.37 mm open execution covers the pressed-steel cage and standard roller complement; sealed or special-clearance variants differ slightly in mass and carry their own order numbers. For a 38.1 mm shaft the usual cone seat is k5 with an H7 housing when the inner ring rotates; arrange two HM801346X bearings as a set for two-direction location and set clearance from the load diagram, never from assembly feel. Journal and housing interface: the 38.1 mm bore takes a k5 shaft seat (upper deviation ~0.076 mm for this diameter range) and the 82.55 mm outside diameter pairs with an H7 housing bore tolerance band of 82.55.000/82.570 mm; the 29.37 mm width defines the shoulder depth, and the 770 g cone-plus-cup assembly is the dead load on the shaft during thermal expansion calculations. Cone-and-cup identity in HM801346X: the leading HM 801346 X reference identifies the inner ring, rollers and cage; the trailing 310 reference identifies the outer ring. The HM801300-series series lists alternative cups for the same cone, each producing a different 82.55 mm OD or 29.37 mm width — hence a different SKU even though the bore stays at 38.1 mm.HM801346X is a single-row tapered roller bearing in the HM801300-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.Numbering ties the bearing to its inch-series envelope: HM801346X means a cone and cup matched pair in the HM801300-series series — which is why the 38.1×82.55×29.37 mm outline swaps dimensionally with other inch-series bearings of the same code. The SKF catalogue adds the ISO 355 dimension-series code after the bare number (e.g. ); it is the dimensional series, not a separate part number.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On this 38.1 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 HM801346X pair heats, loses setting control and smears the roller-rib contact.
• The HM801300-series inch series at 38.1 mm bore (82.55×29.37 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.
• When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of HM801346X pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
• At the 106 kN rating of HM801346X, preload class changes stiffness by tens of percent but also heat generation; select light preload for the 8,000 r/min speed end and heavier preload only where moment stiffness dominates.
• The pressed-steel cage is rated for standard industrial service; sustained running above the limiting speed or with degraded lubricant wears the cage pockets — inspect the cage at every relubrication interval.
• The 106/118 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 HM801346X (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF HM 801346 X/310 designation when purchasing and match the execution to the mounting arrangement.