HRB Harbin bearing 7312 ACTA P5 P4 DB DF precision machine tool spindle bearing

Bore Size:
60 mm
Outside Diameter:
130 mm
Model Number:
7312 ACTA P5 P4 DB DF
$25.50
-+
total_price
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Samples:
60 mm , 130 mm , 7312 ACTA P5 P4 DB DF
$25.50/Piece | 1 Piece (Min. Order) |
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  • Product Description
  • Product Description
    HRB Harbin bearing 7312 ACTA P5 P4 DB DF precision machine tool spindle bearing

    Description of bearing accuracy.


    Bearing precision refers to the dimension precision and rotation precision of the bearing, while the main difference between high precision and low precision is:
    The size deviation of the product with high accuracy grade (inner diameter, outer diameter, ellipse, etc.) is smaller than that of the product with low accuracy grade.
    Rotation accuracy requirements are different, the product with high precision grade the rotation accuracy (radial runout, outer diameter to beat, end face a race to beat, etc.) are lower than the accuracy grade of the value of the product requirements should be strictly;
    Surface shape and surface quality is not the same as the required value, high precision grade of the surface shape and surface quality (race or surface roughness of the channel, circular deviation, furrowed deviation, etc.) are lower than the accuracy grade of the value of the product requirements should be strictly;
    The product with high accuracy grade is superior to the product of general precision grade.
    The accuracy grade of the domestic brand bearing is based on the international ISO standard, and the accuracy level is from the P0 level of the common level to P6, P5, P4 and P2. For general purpose P0 stage had enough, and high precision bearing used for high-speed rotation, small friction friction/change, beating and placed high precision machine tool in mechanical or precise instrument.


    Description of paired bearings.
    Angular contact ball bearings in need under high axial load or two-way axial load when the need to use double row or more matching bearing, commonly used way of pairing with back to back (suffix DB), face-to-face (DF), and the same series (DT).
    Note though is the single bearing (with no matching suffix) and paired bearings is the same as in the specification, but the matching parameters such as the width of the bearing outer ring, is has more stringent requirements, and a single bearing just meets the requirements of a single bearing. Therefore, the general single bearing will not be used in combination with the paired bearing. Instead, it USES the universal mating type bearing (suffix DU) to mix and match with the paired bearing.

    HRB Harbin bearing 7312 ACTA P5 P4 DB DF precision machine tool spindle bearing
    No. No. No. Bore Out Dia Width
          d(mm) D(mm) B(mm)
    7210C 7210AC 7210B 50 90 20
    7211C 7211AC 7211B 55 100 21
    7212C 7212AC 7212B 60 110 22
    7213C 7213AC 7213B 65 120 23
    7214C 7214AC 7214B 70 125 24
    7215C 7215AC 7215B 75 130 25
    7216C 7216AC 7216B 80 140 26
    7217C 7217AC 7217B 85 150 28
    7218C 7218AC 7218B 90 160 30
    7219C 7219AC 7219B 95 170 32
    7220C 7220AC 7220B 100 180 34
    7221C 7221AC 7221B 105 190 36
    7222C 7222AC 7222B 110 200 38
    7224C 7224AC 7224B 120 215 40
    7226C 7226AC 7226B 130 230 40
    7228C 7228AC 7228B 140 250 42
    7230C 7230AC 7230B 150 270 45
    7232C 7232AC 7232B 160 290 48
    7234C 7234AC 7234B 170 320 52
    7236C 7236AC 7236B 180 320 52
    7238C 7238AC 7238B 190 340 55
    7240C 7240AC 7240B 200 360 58
    7244C 7244AC 7244B 220 400 65
     
    HRB Harbin bearing 7312 ACTA P5 P4 DB DF precision machine tool spindle bearing HRB Harbin bearing 7312 ACTA P5 P4 DB DF precision machine tool spindle bearing HRB Harbin bearing 7312 ACTA P5 P4 DB DF precision machine tool spindle bearing
     
     
     
     
     
     
     
    HRB Harbin bearing 7312 ACTA P5 P4 DB DF precision machine tool spindle bearing
     
    HRB Harbin bearing 7312 ACTA P5 P4 DB DF precision machine tool spindle bearing
     
    HRB Harbin bearing 7312 ACTA P5 P4 DB DF precision machine tool spindle bearing
     
     
     
     
     
     
     
    Product Description
    HRB Harbin bearing 7312 ACTA P5 P4 DB DF precision machine tool spindle bearing

    Description of bearing accuracy.


    Bearing precision refers to the dimension precision and rotation precision of the bearing, while the main difference between high precision and low precision is:
    The size deviation of the product with high accuracy grade (inner diameter, outer diameter, ellipse, etc.) is smaller than that of the product with low accuracy grade.
    Rotation accuracy requirements are different, the product with high precision grade the rotation accuracy (radial runout, outer diameter to beat, end face a race to beat, etc.) are lower than the accuracy grade of the value of the product requirements should be strictly;
    Surface shape and surface quality is not the same as the required value, high precision grade of the surface shape and surface quality (race or surface roughness of the channel, circular deviation, furrowed deviation, etc.) are lower than the accuracy grade of the value of the product requirements should be strictly;
    The product with high accuracy grade is superior to the product of general precision grade.
    The accuracy grade of the domestic brand bearing is based on the international ISO standard, and the accuracy level is from the P0 level of the common level to P6, P5, P4 and P2. For general purpose P0 stage had enough, and high precision bearing used for high-speed rotation, small friction friction/change, beating and placed high precision machine tool in mechanical or precise instrument.


    Description of paired bearings.
    Angular contact ball bearings in need under high axial load or two-way axial load when the need to use double row or more matching bearing, commonly used way of pairing with back to back (suffix DB), face-to-face (DF), and the same series (DT).
    Note though is the single bearing (with no matching suffix) and paired bearings is the same as in the specification, but the matching parameters such as the width of the bearing outer ring, is has more stringent requirements, and a single bearing just meets the requirements of a single bearing. Therefore, the general single bearing will not be used in combination with the paired bearing. Instead, it USES the universal mating type bearing (suffix DU) to mix and match with the paired bearing.

    Further Information