7320 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 3.1 single-row ACBB) · extracted 2026-09-26

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 3.1 single-row ACBB); 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 7320 model number is decoded

SKF 7320 (7320 BEP) is the medium (7300) series angular-contact choice for a 100 mm shaft — one row of balls on a steepened, asymmetric raceway giving a nominal 40° contact angle inside the 215×47 mm ISO 15 envelope.The code breaks down as type prefix 7 (angular contact), diameter series 3 (the medium section), and bore code 20 = 100 mm; dimensions 100×215×47 mm therefore match the 6320 deep-groove envelope even though the internal design is different. The letters mean B = 40° angle, E = enhanced ball complement and race geometry, P = PA66 glass-fibre cage, so this 7320 is the open polymer-caged execution rather than the sealed or brass-cage catalogue variants. The 6.4 kN Pu figure feeds the SKF adjusted-life equation at contaminated or partial-film conditions, and the 0.94 C0/C balance shows this execution is tuned to thrust-heavy combined loads rather than pure radial running. Mounting practice for 7320: the rotating ring takes the interference fit (k5 on a 100 mm rotating shaft), the stationary ring slides for axial location, and reversing-thrust duty demands a paired DB/DF set rather than one bearing.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 100 mm bore the ring mass is high enough that cocking during mounting damages the cage and race lips; guide the ring square, confirm seat contact around the full circumference, and re-check preload after the first thermal cycle of the paired set.
• The 73xx medium section at 100 mm bore (215×47 mm) is heavier-rated than the 7220 but runs hotter at the same speed; do not substitute a 7320 into a 72-series spindle position without re-checking dn, lubricant film and preload.
• Do not mix execution classes inside one 7320 pair — universal-matchable (CB) bearings are ground for arbitrary pairing, but a CB unit paired with an unmatched basic BEP bearing will not share preload evenly.
• DB (back-to-back) pairs are stiffer against moments, DF (face-to-face) pairs tolerate misalignment and thermal growth better; choosing the arrangement from the 2D drawing rather than the actual shaft thermal expansion is a common 7320 mounting error.
• The 7500 g mass and 47 mm width mean locknut and spacer faces must be square to the axis within the bearing's own P0 tolerance; a tilted spacer tilts the contact angle and concentrates load on one shoulder of 7320.
• The 203/190 kN ratings are SKF catalogue 17000 values for the 7320 BEP 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 7320 (BEP basic, BECBP universally matchable, BE-2RZP sealed, BECBM brass-cage, ACC-series at 25°); they are not interchangeable order numbers — quote the full 7320 BEP designation when purchasing and match the execution to the mounting arrangement.
• A plain 7320 BEP is a single open bearing, not a universally matchable one; to mount a defined DB/DF pair order the BECBP (CB) execution — pairing two unmatched basic units gives uncontrolled preload because the side faces are not ground for set mounting.