>> P.402
■滑轨负载容量度为1250N/mm2)时的值,如果对方零件材料的硬度不同于40HRC时、可在该值上乘上表9中的滑轨负载容量系数求出。此外,外圈和对方滑轨之间的润滑如果不充分,在某些工作条件下,有时会发生烧结或磨损。尤其是凸轮机构等高速旋转时,需要注意润滑和表面光洁度。滑轨负载容量是指滚子从动轴承的外圈与钢制的对方滑轨面(平面)相接触,对方零件材料不产生变形或压痕,能连续经受的容许负荷。表8.1和表8.2中所示的滑轨负载容量是对方零件材料的硬度为40HRC(抗拉强表8.2滑轨负载容量(英制系列)公称型号(1)滑轨负载容量球面外圈圆柱外圈公称型号(1)滑轨负载容量CRY12RCRY14RCRY16RCRY18RCRY20RCRY22RCRY24RCRY26RCRY28RCRY30RCRY32RCRY36RCRY40RCRY44RCRY48RCRY52RCRY56RCRY64R8531050142016602160245034103820421046105690664089701020011400127001410016800CRY12CRY14CRY16CRY18CRY20CRY22CRY24CRY26CRY28CRY30CRY32CRY36CRY40CRY44CRY48CRY52CRY56CRY64449052407270770010700118001540016700210002250030800347004490049400643006960087000113000单位N注(1)亦适用于密封型。表9滑轨负载容量系数硬度HRC抗拉强度N/mm2滑轨负载容量系数圆柱外圈球面外圈2025303538404244464850525456587608409501080118012501340143515301635176018802015215022900.220.310.450.650.851.001.231.521.852.272.803.464.215.136.260.370.460.580.750.891.001.151.321.511.731.992.292.612.973.39表8.1滑轨负载容量(公制系列)球面外圈圆柱外圈公称型号(1)分离型滚子从动轴承非分离型(3)滚子从动轴承双列圆柱滚子从动轴承滑轨负载容量公称型号滑轨负载容量公称型号(2)滑轨负载容量RNAST5R(R)NAST6R(R)NAST8R(R)NAST10R(R)NAST12R(R)NAST15R─(R)NAST17R─(R)NAST20R─(R)NAST25R─(R)NAST30R─(R)NAST35R─(R)NAST40R─(R)NAST45R─(R)NAST50R─NART5RNART6RNART8RNART10RNART12RNART15R─NART17R─NART20R─NART25R─NART30R─NART35R─NART40R─NART45R─NART50R──────NURT15RNURT15-1RNURT17RNURT17-1RNURT20RNURT20-1RNURT25RNURT25-1RNURT30RNURT30-1RNURT35RNURT35-1RNURT40RNURT40-1RNURT45RNURT45-1RNURT50RNURT50-1R104013301850247027103060391036604530453051905190658065808020802092209220108009990124001080014000RNAST5(R)NAST6(R)NAST8(R)NAST10(R)NAST12(R)NAST15─(R)NAST17─(R)NAST20─(R)NAST25─(R)NAST30─(R)NAST35─(R)NAST40─(R)NAST45─(R)NAST50─231035503980561059906550─10900─12800─14100─22100─25700─26900─28500─30200──NAST6ZZNAST8ZZNAST10ZZNAST12ZZNAST15ZZ─NAST17ZZ─NAST20ZZ─NAST25ZZ─NAST30ZZ─NAST35ZZ─NAST40ZZ─NAST45ZZ─NAST50ZZ──35504490689073508030─11700─13800─15300─22100─25700─30300─32200─34000─公称型号滑轨负载容量NURT15NURT15-1──────────1150013700NURT17NURT17-11360016000NURT20NURT20-12000022100NURT25NURT25-12210026400NURT30NURT30-13160036700NURT35NURT35-13670040800NURT40NURT40-14420049700NURT45NURT45-14700055300NURT50NURT50-14970060800单位N注(1)亦适用于满滚子、屏蔽型及密封型。(3)亦适用于C-Lube自润滑滚子从动轴承。(2)亦适用于密封型。402
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