API Standard 613 - Special Purpose Gear Units （API标准613 -专用齿轮单位）.pdf

API Standard 613 - Special Purpose Gear Units for Petroleum, Chemical, and Gas Industry Services Last update: October 26, 2007 Standard Edition Section Inquiry # Question Reply 613 5th - Feb. 2.2.3 Question 1: In the Driven Equipment column of Table 3, what Reply 1: The temperature of hot oil is not specified in API 613. 2003 temperature is considered hot for Centrifugal, hot oil? Would this be used for a heated crude oil pipeline application? Question 2: In the Driven Equipment column of Table 3, can Reply 2: API 613 is for refinery service, but could be used for Centrifugal, water supply be used for municipalities? municipalities. 613 5th - Feb. 2.2.4.2 613-I-01/03 Backgound: We have gears built with center distance variation where Yes. 2003 the manufacturing pinion pitch diameter is different from the running pinion pitch diameter. In Equations 1 and 2 of 2.2.4.2 the variable d is used to calculate the transmitted tangential load at the operating pitch diameter. Question: Should d be considered the running pinion pitch