7301-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 7301-BE-2RZP model number is decoded

7301 BE-2RZP is SKF's 12 mm-bore single-row angular-contact ball bearing in the 7300 series, nominal 40° (B) contact angle, 12×37×12 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 12×37×12 mm (0.472×1.457×0.472 in), 12.5 mm radial section height, C 10.6 kN, C0 5 kN, Pu 0.208 kN.reference speed 26,000 r/min (thermal) and limiting speed 20,000 r/min (mechanical), catalogue mass 60 g. Sizing arithmetic on the 12 mm bore: 10.6 kN C divided by the 12.5 mm radial section height gives 0.8 kN per section millimetre; the 60 g mass and 2 % Pu/C share frame the light-load floor for the adjusted-life check. The 0.208 kN fatigue load limit is the equivalent-load floor for long-life adjustment; with 10.6/5 kN ratings and 60 g mass this execution carries about 0.88 kN of C per millimetre of bore. Bore-to-OD planning: OD 37 over bore 12 is a 3.08× step for this size, and the 12 mm width gives a bore/width ratio of 1.00; use these ratios when housing space around the 12 mm shaft is the first constraint. 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

• Greased positions should fill roughly 25–35 % of the free volume on a 7301-BE-2RZP of this section and route the surplus past the outer ring; overpacking churns the grease and reproduces the thermal preload problem mechanically.
• 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.
• 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.
• Reference and limiting speeds are different ceilings: design to both, and remember preload and oil/air cooling move the real thermal limit far from the catalogue reference value.
• The steep 40° angle of 7301-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 7301-BE-2RZP add little drag but are not contact seals; in wet or fine-dust duty retain external sealing at the housing.