I. Model Designation 7013: 70 Series (extra-light series) angular contact ball bearing AC: Contact angle of 25° P6: Precision class 6
II. Basic Standard Parameters Dimensions: 65 x 100 x 18 mm Weight: 0.414 kg
III. Core Product Advantages 1. Advantages of AC (25° contact angle) vs. 7013C (15°) and 7013B (40°) (1.) Balanced radial and axial load capacity Compared to the 15° 7013C, it offers higher axial load capacity and greater rigidity; compared to the 40° 7013B, it delivers superior high-speed performance and lower operating temperature rise, making it the most versatile intermediate choice. (2.) Excellent resistance to overturning moments When installed in matched pairs, the spindle achieves high rigidity and superior resistance to off-center loads and wobbling compared to the "C" type; suitable for rotating shafts subjected to combined radial and axial loads. 2. Advantages of P6 precision class (1.) Superior dimensional tolerances and rotational accuracy compared to standard P0 bearings; results in reduced runout and lower operating vibration. (2.) Suitable for medium-precision transmission equipment; offers high cost-performance and is the preferred choice when high-end P4 precision bearings are not required. (3.) Greater tolerance for machining and assembly errors; moderate requirements for shaft and housing bore machining. 3. Structural advantages (1.) Flexible pairing: Supports various configurations such as DF, DB, and DT to accommodate bidirectional axial loads and heavy-load operating conditions. (2.) Moderate speed range, balancing high speed with load-bearing capacity; open structure facilitates easy lubrication/greasing.
IV. Application Scenarios CNC lathe spindles, grinding machines, fans, pumps, gear reducers, woodworking machinery, textile equipment, small-to-medium precision motors, and gear transmission shafts. V. Selection Tips High speed with light axial load → Prioritize the 7013C; Very high axial load with relatively low speed → Select the 7013B; Combined radial and axial loads, balancing speed and rigidity → The 7013AC is the optimal choice; P6 is suitable for general-purpose precision equipment; high-end machine tool spindles typically upgrade to the P4-grade 7013AC/P4.
