7303-BE-2RZP bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-27

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); 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 7303-BE-2RZP model number is decoded

7303 BE-2RZP is SKF's 17 mm-bore single-row angular-contact ball bearing in the 7300 series, nominal 40° (B) contact angle, 17×47×14 mm to the ISO dimension plan. 40° contact angle (suffix B): the steep standard single-row angle, giving the highest axial capacity at the cost of speed, with a recommended load ratio Fa/Fr ≥ 1. E marks the optimized internal design with an enhanced ball complement and race geometry. glass-fibre reinforced PA66 cage, ball-centred (suffix P), with a 120 °C continuous-temperature ceiling. -2RZ marks non-contact NBR seals on both sides riding in recessed grooves: they keep contamination and the standard grease fill in without lip drag, and P again denotes the PA66 cage. Envelope 17×47×14 mm (0.669×1.85×0.551 in), 15.0 mm radial section height, C 15.9 kN, C0 8.3 kN, Pu 0.355 kN.reference speed 20,000 r/min (thermal) and limiting speed 15,000 r/min (mechanical), catalogue mass 110 g. Mass and section check: 110 g inside the 17×47×14 mm outline leaves a 15.0 mm radial section, and the 8.3 kN static rating is 0.52× the dynamic rating — plan static safety and minimum load against those numbers rather than against sister executions. Load balance: C0 8.3 kN against C 15.9 kN gives a 0.52 ratio, typical of a steep-angle axial-oriented design; Pu 0.355 kN enters the SKF adjusted-life equation rather than the basic rating life. Speed-ratio note for this exact unit: the reference speed is 20,000 r/min against a 15,000 r/min limiting speed, i.e. a reference-to-limit ratio of 1.33. Sealing note: the two non-contact NBR -2RZ seals run in recessed grooves without touching the inner ring, so drag and speed loss stay small while the standard grease fill is retained and coarse dust is excluded; they are not lip-contact seals, so pressure washing and fine slurry still require external housing seals. The uncapped BECBP/BEP executions are the open counterparts.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Mount by induction-heating the inner ring to max 120 °C — the PA66 cage sets the ceiling, not the steel; driving the bearing home through the outer ring or balls brinells the asymmetric raceway.
• One 7303-BE-2RZP locates the shaft in one axial direction only; reversing-thrust positions need a DB or DF pair — or a double-row bearing — with preload set from the load diagram, never from assembly feel.
• Preload the set against a calculated stand-off dimension — the ground faces of BE-2RZP establish it, but locknut torque, sleeve crush and housing-face squareness each consume part of the allowance.
• Do not mix execution classes inside one set: a universally matchable BE-2RZP unit is ground for arbitrary pairing, a basic execution is not.
• The steep 40° angle of 7303-BE-2RZP favours thrust-heavy combined loads; for a predominantly radial high-speed position the 25° ACCBM execution of the same size is the alternative order number.
• The non-contact -2RZ seals of 7303-BE-2RZP add little drag but are not contact seals; in wet or fine-dust duty retain external sealing at the housing.