SKF7015CP4DGASuper-Precision Angular Contact Ball Bearing – 75 mm Bore, 115 mm OD, 20 mm Width, 15°, ABEC 7

Product Description

What this part is

SKF 7015 CD/P4A super-precision single-row angular contact ball bearing, universally matchable. Bore Diameter: 75 mm. Outside Diameter: 115 mm. Overall Width: 20 mm. Contact Angle: 15°. Precision Class: ABEC 7 / P4A. Preload: extra light (DGA). Internal Clearance: N/A. Number Of Rows: 1. Rolling Elements: Ball. Bore Type: Cylindrical. Closure Type: Open. Bearing Material: Bearing steel. Series: 70. Base Number: 7015.

Decoding the designation

7015 is the ISO 70 light series at a 75 mm bore. CD is SKF’s 15° super-precision design. DGA — universally matchable, extra light preload. P4A is the super-precision tolerance class. Written as 7015-CDGA/P4DGA, 7015-C-P4-DGA, 7015C and 7015 CD/P4A.

What these specs mean in practice

Dynamic Load Rating: 52,700 N. Static Load Rating: 49,000 N. Limiting Speed: 11,000 rpm grease; 18,000 rpm oil-air. A 15° contact angle keeps more of the load path radial, so the bearing runs faster and cooler than a 25° part of the same size and gives up axial stiffness in exchange. Twenty 12.7 mm balls spread the radial load over a long contact arc, which is why the static rating comes so close to the dynamic on this size. Extra light preload suits positions where speed and thermal growth matter more than rigidity.

Quantity and configuration

Unit Quantity: 1 Pc. One bearing per sale unit, open on both faces. Ball complement: 20 balls of 12.7 mm diameter. Load-centre distance a: 22.8 mm from the side face.

Mounting data

Shaft abutment diameter da and db: 81 mm minimum. Housing abutment diameter Da: 109 mm maximum. Housing abutment diameter Db: 111 mm maximum. Shaft fillet radius ra: 1 mm maximum. Housing fillet radius rb: 0.6 mm maximum. Bearing chamfers r1,2: 1.1 mm minimum and r3,4: 0.6 mm minimum. Oil nozzle position dn: 90 mm. Reference grease quantity: 8.4 cm³ per bearing.

Interchange guidance

The 15° super-precision 7015 is built by every spindle-bearing maker and the angle codes translate. Cross-Reference 1: FAG B7015-C-T-P4S, where the C on a B70 designation is the 15° angle. Cross-Reference 2: NSK 7015C. Cross-Reference 3: RHP 7015 CT. Cross-Reference 4: SNFA EX75 7CE1, where CE1 is 15°. Cross-Reference 5: SKF 7015 ACD/P4A, the same envelope and precision at a 25° contact angle and therefore a related size rather than a substitution. Searchable forms: 7015-CDGA/P4DGA, 7015-C-P4-DGA, 7015CDGAP4, 7015C, 7015.