7310-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 7310-BE-2RZP model number is decoded

7310 BE-2RZP is SKF's 50 mm-bore single-row angular-contact ball bearing in the 7300 series, nominal 40° (B) contact angle, 50×110×27 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 50×110×27 mm (1.969×4.331×1.063 in), 30.0 mm radial section height, C 68.9 kN, C0 47.5 kN, Pu 2 kN.reference speed 7,500 r/min (thermal) and limiting speed 6,000 r/min (mechanical), catalogue mass 1200 g. Mass and section check: 1200 g inside the 50×110×27 mm outline leaves a 30.0 mm radial section, and the 47.5 kN static rating is 0.69× the dynamic rating — plan static safety and minimum load against those numbers rather than against sister executions. Load balance: C0 47.5 kN against C 68.9 kN gives a 0.69 ratio, typical of a steep-angle axial-oriented design; Pu 2 kN enters the SKF adjusted-life equation rather than the basic rating life. Bore-to-OD planning: OD 110 over bore 50 is a 2.20× step for this size, and the 27 mm width gives a bore/width ratio of 1.85; use these ratios when housing space around the 50 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

• 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.
• Fillet radii must clear the chamfer so the 27 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
• One 7310-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.
• The steep 40° angle of 7310-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 7310-BE-2RZP add little drag but are not contact seals; in wet or fine-dust duty retain external sealing at the housing.