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H719 Series | High Precision and High Speed Angular Contact Ball Bearing

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H719 High Speed Series Bearing

Series

Click series for Specification Chart

Series

Range

Schematic Diagram:

Parameters:

HGT 719 series Angular Contact Ball Bearings come with 15 ° (C) and 25 ° (AC) contact angles. As for the angular contact ball bearings, the bigger the contact angle is, the greater the axial load capacity is, but the lower the limited speed of bearings becomes. Therefore, with high speed and small axial load, the application should adopt the 15 ° angular contact ball bearings. Otherwise, the 25 ° angular contact ball bearing should be adopted.

Please contact us at [email protected] regarding Category: H719 High-Speed Series Angular Contact Ball Bearings

Attributes of HGT 719 series Angular Contact Ball Bearings

  • Rolling Element: Steel Ball or Ceramic Balls; Generally, the steel balls are recommended for medium or high speed while the ceramic balls are recommended for high speed or special working conditions.
  • Seal Type: Sealed, Open
  • Structural Features: The design of small balls enables the bearings to have high-speed performance, high rigidity, and low heat. The rings are made of bearing steel with high purity. The unique technology of heat treatment, cold treatment, and material modifications lead to a dramatic increase in the antifatigue life of bearing.
  • Contact Angle: 15°and 25°. Paired bearings can support axial and radial loads.
  • Cage: Bakelite (outer-ring guided), Nylon (rolling-element guided), brass
  • Speed Factor:
    when the rolling elements are steel balls,
    • Grease: DmN≤1200000 (that is, limit speed N≤1200000/Dm
    • Oil (minimum): DmN≤1800000
    when the rolling elements are ceramic balls,
    • Grease: DmN≤1400000 (that is, limit speed N≤1400000/Dm
    • Oil (minimum): DmN≤2200000

Applications

They are mainly used for high rotating accuracy and high rotational speed. For example, CNC lathe spindle, high-speed electric spindle for grinding, grinding wheel spindle, high speed and high precision machinery, etc.

H719 reference table

High Precision and High Speed Angular Contact Ball Bearing – H719 Series
Part Number Dimensions (mm) 〆15o 〆25o Cage
d D B Rated Load Capacity (kN) Limit Speed (r/min) Rated Load Capacity (kN) Limit Speed (r/min)
Cr Cor Grease   Oil Cr   Cor Grease   Oil
HSS71900 10 22 6 2.9   1.8 69000   109000 2.7   1.7 66000   90000 Bakelite
HSS71901 12 24 6 3.2    2.2 62000  94000 3.1   2.1 55000   84000 Bakelite
HSS71902 15 28 7 4.8   3.4 52000   79000 4.6   3.2 49000   74000 Bakelite
HSS71903 17 30 7 5.1   3.8 49000   74000 4.8   3.6 44000   66000 Bakelite
HSS71904 20 37 9 7.4   5.8 39000   59000 7.0   5.6 37000   55000 Bakelite
HSS71905 25 42 9 7.6   6.5 33000  49000 7.2   6.2 29000   44000 Bakelite
HSS71906 30 17 9 8.0   7.6 29000   44000 7.6   7.2 25000   39000 Bakelite
HSS71907 35 55 10 11   10.9 25000   39000 10.4   10.3 19000   33000 Bakelite
HSS71908 40 62 12 14   14.2 19000   33000 13.3   13.5 17000   29000 Bakelite
HSS71909 45 68 12 14.7  16.1 17000    29000 13.9   15.2 16000   27000 Bakelite
HSS71910 50 72 12 19   21.2 16000   27000 17.9   20.1 14000   23000 Bakelite
HSS71911 55 80 13 23.7   27.4 14000   23000 22.4   26 13000   21000 Bakelite
HSS71912 60 85 13 24.8   30.3 13000    21000 23.3   28.7 12000   19000 Bakelite
HSS71913 65 90 13 25.1  31.9 12000   19000 23.6   30.2 11000   18000 Bakelite
HSS71914 70 100 16 34.5   43.3 11000   18000 32.6   41.2 10000   17000 Bakelite
HSS71915 75 105 16 25   45.6 10000   17000  33      43.2 8500    15000 Bakelite
HSS71916 80 110 16 35.5   47.8 9000   16000 33.5   45.3 8000   14000 Bakelite
HSS71917 85 120 18 46.5   61.9 8500   15000 43.8   58.6 7500   13000 Bakelite
HSS71918 90 115 18 47.2   64.8 8000   15000 20.4   31.6 7500   13000 Bakelite
HSS71919 95 130 18 47.9   67.8 8000  14000 45.2   64.1 7000   12000 Bakelite
HSS71920 100 140 20 60.4   84.4 7500   13000 56.9   79.9 7000   12000 Bakelite
HSS71921 105 145 20 61.4   88.2 7000   12000 57.8   83.5 6500   11000 Bakelite
HSS71922 110 150 20 62.3   91.9 6500   11000 58.7     87 6000   10000 Bakelite
HSS71924 120 165 22 73.7   107.6 6000   10000 69.5   101.9 5700   9000 Bakelite
HSS71926 130 180 24 76.3   117.1 5700   9000 71.9   110.9 5000   8000 Bakelite
HSS71928 140 190 24 78.9   126.4 5000   8000 74.4   119.7 4600   7500 Bakelite
HSS71930 150 210 28 118.2   175.1 4600   7500 111.4  165.8 4000   6500 Bakelite
HSS71932 160 220 28 123.3   191.2 4000   6500 116.5   181.1  3800     6000 Bakelite
HSS71934 170 230 28 125.7   200.0 3800   6000 118.5   189.4 3300   5300 Bakelite
HSS71936 180 250 33 159.7   249.1 3500   5700 150.6   235.9 3000   5000 Bakelite
HSS71938 190 260 33 162.8   260.8 3300   5300 153.5   247.0 2800   4600 Bakelite
HSS71940 200 280 38 198.4   311.4 2800   4600 187.1   394.9 2600   4300 Bakelite
HSS71944 220 300 38 206.6   341.1 2600   4300 194.8   323.0 2200   3800 Bakelite
HSS71948 240 320 38 225     310 2300   3500 212   300 2200   3300 Bakelite
HSS71952 260 360 46 281   425 2100   3100 265   400 2000   2900 Bakelite
HSS71956 280 380 46 282   425 2101   3100 266   400 2001   2900 Bakelite
HSS71960 300 420 56 283   425 2102   3100 267   400 2002   2900 Brass
HSS71964 320 440 56 284   425 2103   3100 268   400 2003   2900 Brass
HSS71968 340 460 56 285   425 2104   3100 269   400 2004   2900 Brass
HSS71972 360 480 56 286   425 2105   3100 270   400 2005   2900 Brass
HSS71976 380 520 65 287   425 2106   3100 271   400 2006   2900 Brass
HSS71980 400 540 65 288   425 2107   3100 272   400 2007   2900 Brass
HSS71984 420 560 65 289   425 2108   3100 273   400 2008   2900 Brass
HSS71988 440 600 74 290   425 2109   3100 274   400 2009   2900 Brass
HSS71992 460 620 74 291   425 2110   3100 275   400 2010   2900 Brass

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