Relationship with the pulley pulley groove angle: The angle of the pulley groove is divided into 32 degrees 34 degrees 36 degrees 38 degrees Bushes manufacturers, specific selection to choose according to the pulley groove and the reference diameter; pulley groove angle with pulley diameter relationship, the different types of groove angle pulley pulley groove angle recommended number of different diameters in the range are as follows: O type pulley pulley 50mm ~ 71mm diameter in the range of 34 degrees when; when 71mm ~ 90mm pulley 36 degrees ,> 38 degrees at 90mm; A-type pulley pulley 71mm ~ 100mm diameter in the range of 34 degrees when, 100mm ~ 125mm at 36 degrees;> 38 degrees at 125mm; B-type pulley pulley diameter in the range 125mm ~ 34 degrees at 160mm; 160mm ~ 200mm at 36 degrees,> 38 degrees at 200mm; C-type pulley pulley 200mm ~ 250mm diameter in the range of 34 degrees when, 250mm ~ 315mm at 36 degrees spc Bushes ,> 38 degrees at 315mm; D-type pulley pulley diameter in the range 355mm ~ 450mm at 36 degrees,> 38 degrees at 450mm; E-type 500mm ~ 630mm at 36 degrees,> 38 degrees at 630mm belt Failure Failure Analysis toothed pulley wheel interpreted as follows: motor overheating problems during exercise in timing belt pulleys often produced, processed as follows: 1, the proportion is greater than the belt round the medium configuration motor: equipped with the appropriate timing belt wheel motor. 2, the pressure is too firmly packing gland or mechanical seal spring adjustment too tight: can spring gland or mechanical seal to adjust the amount of compression. 3, equipped with a pump of poor quality, or the existence of friction at the motor and pump shaft no concentric: Quality Check fitted and equipped to remove the fault. 4, wheel and shaft coupling: When the gear or pulley and shaft coupling, when it should be removed the same drive space. spb drogue _ Hengda Machinery (certified) pulley _ Bushes provided by Texas Hengda Machinery Co., Ltd. Texas Hengda Machinery Co., Ltd. (www.sddzhdjx.com) (www.sddzhdjx.com) is Dezhou, machining leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Hengda Machinery leadership in the staff warmly welcome all inquiries negotiations to create a better future Hengda machinery.