HM801346-310 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 HM801346-310 model number is decoded

For a 38.1 mm shaft carrying combined load, SKF lists HM801346 under catalogue execution SKF HM 801346/310: one open single-row tapered roller bearing in the inch HM801300-series.On the SKF nameplate, HM801346 denotes a matched cone-and-cup pair: the designation is not a single number but a cone reference and cup reference joined by a slash, with the HM801300-series marking the dimensional series. In SKF suffix language a bare HM801346 is the standard execution; B marks a larger contact angle and Q or J2 mark clearance/cage variants, all quoted separately. The 13.4 kN Pu figure feeds the adjusted-life equation at contaminated or partial-film conditions, and the 1.11 C0/C balance shows this execution is tuned to thrust-heavy combined loads rather than pure radial running. Because the contact line is tapered, one HM801346 reacts thrust in a single direction; bidirectional shafts need an O or X pair, and a rotating cone on a 38.1 mm shaft typically takes a k5 seat with an H7 housing bore. Dimensional interchange map: within the HM800 series at 38.1 mm bore, the 82.55 mm OD and 29.37 mm width are fixed by the ISO 355 plan, so any same-code bearing from another brand shares the mounting envelope; the 22.2 mm section height distinguishes this family from a 302 or 322 of the same bore, and the 780 g mass is the minimum—sealed or snap-ring executions add rotating weight above that catalogue baseline. Two catalogue entries share the HM 801346 cone but use different cups; this one, HM801346, takes the 310 cup and is ground for the resulting 82.55 mm OD / 29.37 mm width envelope. Selecting a sibling cup produces a different boundary plan and a different order number, so the full designation is required at purchase.

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 HM801346 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 HM801346 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
• Setting is a design value, not an assembly feel: excessive preload in the HM801346 pair raises operating temperature and can trigger thermal runaway, while too little lets the rollers skid and smear the raceway under light load.
• Catalogue reference speed and limiting speed are different limits: the 6,700 r/min reference is a thermal criterion under load, while the 8,000 r/min limiting value is the mechanical ceiling — observe both.
• 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 HM801346 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF HM 801346/310 designation when purchasing and match the execution to the mounting arrangement.