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圈上海文通大华 Bevel Gears 口Straight Bevel(直齿圆锥齿轮) >Usually used for pitch-line velocities up to 1000 ft/min (When the noise level is not an important consideration) >Available in many stock sizes >Less expensive to produce than other bevel gears,especially in small quantities. 圈上泽夫道大学 Bevel Gears 口Spiral(螺旋锥齿轮) >Similar to bevel gears >However,teeth are angled with respect to axis at a spiral angle(analogous to the helix angle of helical gears). >Recommended for higher speeds and where noise level is an important consideration. >Have less vibration >Stronger than straight bevel gear of same diameter and pitch.(Because spiral's tooth is thicker in direction of loading) 77 Bevel Gears  Straight Bevel(直齿圆锥齿轮)  Usually used for pitch-line velocities up to 1000 ft/min (When the noise level is not an important consideration)  Available in many stock sizes  Less expensive to produce than other bevel gears, especially in small quantities.  Spiral (螺旋锥齿轮)  Similar to bevel gears  However, teeth are angled with respect to axis at a spiral angle (analogous to the helix angle of helical gears).  Recommended for higher speeds and where noise level is an important consideration.  Have less vibration  Stronger than straight bevel gear of same diameter and pitch.(Because spiral’s tooth is thicker in direction of loading) Bevel Gears
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