RHP7203ETDULP4VSuper-Precision Angular Contact Ball Bearing – Straight Bore, 17 mm ID, 40 mm OD, 12 mm Width, Open, 25° Contact Angle, ABEC 7, Light Preload

Product Description

What this part is

RHP 7203ETDULP4V super-precision angular contact ball bearing, 72 dimension series, 17 mm bore x 40 mm outside diameter x 12 mm width. Bore: 17 mm. Outside Diameter: 40 mm. Overall Width: 12 mm. Bore Type: Straight. Number Of Rows: 1. Rolling Elements: Balls. Closure Type: Open. Contact Angle: 25°. Precision Class: ABEC 7 (RHP EP7 / ISO Class 4). Preload: Light. Cage Material: Machined laminated phenolic. Cage Type: Machined, outer-ring guided. Design Units: Metric. Material: Chrome bearing steel. Country of Origin: United Kingdom.

Decoding the designation

7203 gives the 72 dimension series and a 17 mm bore. E: 25° contact angle. T: machined laminated phenolic cage, outer-ring guided. DU: universally faced pair, so the pieces mount back-to-back, face-to-face or in tandem. L: light preload. P4: RHP EP7, equal to ISO tolerance class 4 and ABEC 7. The carton carries three schemes and all three give the same angle: FAG B7203-E-T-P4S (E on a B70 designation is 25°), SKF 7203 ACD/P4A DGA (ACD is 25°) and Fafnir 3MM203WI-DUL (3MM is 25°). Searchable variants: 7203E, 7203-E-T-DUL-P4V, 7203 E T DUL P4 V, 7203ETDULP4.

What these specs mean in practice

Dynamic Load Rating: 13.2 kN. Static Load Rating: 5.60 kN. Permissible Axial Load: 5.30 kN. Limiting Speed, oil or oil-air lubrication: 52,700 rpm. Limiting Speed, grease lubrication: 35,100 rpm. Effective Load Centre: 12.6 mm. Item Weight: 0.064 kg (0.14 lb). A 25° contact angle carries more thrust and less speed than a 15° execution of the same envelope, which suits a small spindle seeing combined radial and axial load. The machined laminated phenolic cage is light and outer-ring guided, giving stable cage rotation at speed and continuous service to 120 °C. Lubricant: grease or oil. Maximum Operating Temperature: 120 °C. Minimum Operating Temperature: -30 °C.

Quantity and configuration

Unit Quantity: 1 Pc. One piece from a factory universally faced pair. Mounting Arrangement: universally faced, for back-to-back, face-to-face or tandem assembly. Internal Clearance: N/A — face grinding sets the axial position on a universally faced preloaded execution, in place of a radial clearance class.

Fitting notes

Diameter of Shaft Abutment: 22 mm minimum. Diameter of Housing Abutment: 35 mm maximum. Chamfer Dimension: 0.6 mm minimum. Measured axial clearance at light preload: -4 µm. Axial rigidity at light preload: 60 N/µm in a back-to-back or face-to-face pair.

Interchange guidance

Same-specification equivalents: NSK 7203A5TRDULP4, FAG B7203-E-T-P4S-DUL, SKF 7203 ACD/P4ADGA, Fafnir 3MM203WI-DUL. A 7203C execution shares the 17 x 40 x 12 mm envelope at a 15° contact angle, which is a related size rather than a substitution.