1）平行上托辊：平行下托辊：适用范围港运码头，矿山运送,机械设备 2）平行上调心托辊.平行下调心托辊：适用范围避免皮带跑偏梳形托辊：矿山、码头、煤炭、电厂、焦化、出口贸易 1.托辊正常运用寿命20000h以上，通常不需修理。但依据运用场所和负荷的巨细，应制定相应的修理日期，及时清洁注油修理，及时整理浮煤等。对有反常动静和不转的托辊要及时替换。  2.替换轴承时，有必要使轴承坚持架开口向外，轴承装入托辊后，应坚持恰当的游隙，不得压死。  3.迷宫密封件应选用原厂配件，安装时应别离装入托辊内，不得套在一同安装。  4.运用中托辊，应谨防重物击砸托辊管体。  5.为保证托辊密封性能及运用性能，严禁随意拆开托辊。

1) parallel roller: parallel to the lower roller: the scope of port wharf, mine transportation, machinery and equipment 2) parallel raised idler roller. The parallel cut scope to avoid the deviation of the belt comb idler: mines, docks, power plants, coking coal, and export 1. roller normal use life is more than 20000h, usually does not need to be repaired. But according to the size and size of the use of the site, should be appropriate to repair the date, timely cleaning, oiling, repair, timely finishing of floating coal, etc.. In case of abnormal movement and non rotating idler, replace it in time. 2., replace the bearing, it is necessary to keep the bearing open to the outside of the bearing, bearing into the idler, should adhere to the proper clearance, not to death. 3. labyrinth seals should be selected from the original parts, installation should be loaded into the idler, shall not be installed together. 4., the use of middle roller, should be careful to hit the weight of the roller tube. 5., in order to ensure the sealing performance and application performance of roller, it is strictly prohibited to disassemble the idler.