7307-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 7307-BE-2RZP model number is decoded

7307 BE-2RZP is SKF's 35 mm-bore single-row angular-contact ball bearing in the 7300 series, nominal 40° (B) contact angle, 35×80×21 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 35×80×21 mm (1.378×3.15×0.827 in), 22.5 mm radial section height, C 39 kN, C0 24.5 kN, Pu 1.04 kN.reference speed 11,000 r/min (thermal) and limiting speed 8,500 r/min (mechanical), catalogue mass 450 g. Load balance: C0 24.5 kN against C 39 kN gives a 0.63 ratio, typical of a steep-angle axial-oriented design; Pu 1.04 kN enters the SKF adjusted-life equation rather than the basic rating life. Mass and section check: 450 g inside the 35×80×21 mm outline leaves a 22.5 mm radial section, and the 24.5 kN static rating is 0.63× the dynamic rating — plan static safety and minimum load against those numbers rather than against sister executions. Speed-ratio note for this exact unit: the reference speed is 11,000 r/min against a 8,500 r/min limiting speed, i.e. a reference-to-limit ratio of 1.29. 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

• DB pairs give the highest moment stiffness, DF pairs tolerate misalignment and thermal expansion better, DT shares heavy one-direction thrust; choose from the shaft thermal calculation rather than by habit.
• Greased positions should fill roughly 25–35 % of the free volume on a 7307-BE-2RZP of this section and route the surplus past the outer ring; overpacking churns the grease and reproduces the thermal preload problem mechanically.
• Assign interference to the rotating ring — roughly k5 on a 35 mm rotating shaft with an H7 housing — and let the stationary ring slide for axial setting; reverse the logic if the outer ring rotates.
• Keep the load ratio in the SKF design range: Fa/Fr ≥ 1 for this angle; below it the balls unload the contact ellipse and skid, which is why the catalogue insists on a minimum axial load (Fam ≈ A·(n·dm/1000)²) at high speed.
• The steep 40° angle of 7307-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 7307-BE-2RZP add little drag but are not contact seals; in wet or fine-dust duty retain external sealing at the housing.