32034 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.1 metric 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. 8.1 metric 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 32034 model number is decoded

SKF 32034 (SKF 32034 X) is the low-friction section tapered roller choice for a 170 mm shaft — one row of tapered rollers on an asymmetric raceway inside the 260×57 mm ISO 355 envelope.The code breaks down as type prefix 3 (tapered roller), series 20 (the low-friction section), and bore code 34 = 170 mm; dimensions 170×260×57 mm therefore match the ISO 355 envelope. In SKF suffix language a bare 32034 is the standard execution; B marks a larger contact angle and Q or J2 mark clearance/cage variants, all quoted separately. Catalogue mass 10500 g for the 170×260×57 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. Fit selection follows the rotating ring — interference on a rotating cone — and two 32034 units are required to take reversing thrust; keep the induced axial load inside the rated capacity when calculating the pair. Material and manufacturing detail: the 10500 g catalogue mass reflects through-hardened bearing steel (density ~7.85 g/cm³) machined to the 32000 ISO envelope, with the pressed-steel cage contributing roughly 315 g of the total; the 170 mm bore is ground to IT5 roundness and the 260 mm OD to IT5 cylindricity, and the 57 mm width tolerance keeps the pair-setting scatter within the ISO preload class.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 170 mm bore the cone mass is high enough that cocking during mounting damages the cage and rib; guide the ring square, confirm seat contact around the full circumference, and re-check setting after the first thermal cycle of the paired set.
• The 320 series at 170 mm bore (260×57 mm) is the low-friction, higher-speed section; it carries less thrust than a 30234 of the same bore, so verify the axial load share before swapping.
• When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of 32034 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
• At the 625 kN rating of 32034, preload class changes stiffness by tens of percent but also heat generation; select light preload for the 2,200 r/min speed end and heavier preload only where moment stiffness dominates.
• Catalogue reference speed and limiting speed are different limits: the 1,900 r/min reference is a thermal criterion under load, while the 2,200 r/min limiting value is the mechanical ceiling — observe both.
• The 625/915 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 32034 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 32034 X designation when purchasing and match the execution to the mounting arrangement.