胀紧联结套(简称胀套也叫工业胀紧套),锁紧联结盘（简称锁紧盘），是当今国际上*用于重型载荷下机械联结的一种先进基础部件，在轮和轴的联结中，它是靠拧紧高强度螺栓使包容面间产生的压力和磨擦力实现负载传送的一种无键联结装置。
胀紧套联结独特的优点
（一）使用胀紧套使主机零件制造和安装简单。安装胀套的轴和孔的加工不像过盈配合那样要求高精度的制造公差。胀套安装时无须加热，冷却或加压设备，只需将螺栓按要求的力矩拧紧即可。且调整方便，可以将轮毂在轴上方便地调整到所需位置。胀套也可用来联结焊接性差的零件。
（二）胀紧套的使用寿命长，强度高。胀套依靠摩擦传动，对被联结件没有键槽削弱，也无相对运动，工作中不会产生磨损。
（三）胀套在超载时，将失去联结作用，可以保护设备不受损害。
（四）胀套联结可以承受多重负荷，其结构可以做成多种样式。根据安装负荷大小，还可以多个胀套串联使用。
（五）胀套拆卸方便，且具有良好的互换性。由于胀套能把较大配合间隙的轴毂结合起来，拆卸时将螺栓拧松，即可使被联结件容易拆。胀紧时，接触面紧密贴合不易锈蚀，也便于拆开。
Z2型胀紧套由一个开口的双锥内环，一个开口的双锥外环和两个双锥压紧环组成。用内六角螺栓拧紧，拧紧时弹性环没有相对于轴毂的轴向移动，与Z1型比较，同样压紧力能产生更大的径向压力，传递更大的载荷。为便于拆卸，在一个压紧环上有拆卸用螺孔，沿圆周共有2~4处。*应用于包装、印刷、纺织、机床等机械上。
SXRXZT(Z2)型胀套基本尺寸和参数规格
d×D基本尺寸额定负荷胀套与轴结合面上的压力Pt
（N/mm2）胀套与轴毂结合面上的压力Pt’
（N/mm2）螺钉的拧紧力矩MA（N.m）重量G
（Kg）dDILL1d1nFtMt19×471947172027.5M68270.2620090140.2420×472047172027.5M68270.2721090140.2422×472247172027.5M68270.319590140.2424×502450172027.5M69300.3519095140.2425×502550172027.5M69300.3819095140.2528×552855172027.5M610330.4718595140.330×553055172027.5M610330.517595140.3232×603260172027.5M610400.63180105140.2935×603560172027.5M612400.7180105140.338×633863172027.5M614460.88185105140.3238×653865172027.5M614460.88185105140.3340×654065172027.5M614460.92180110350.3442×724272202433.5M812651.36200117350.4842×754275202433.5M812651.36200117350.4845×754575202433.5M812721.62210125350.5748×804880202433.5M812721.77200125350.6250×805080202433.5M812711.77190115350.655×855585202433.5M814832.27200130350.6360×906090202433.5M814832.47180120350.6965×956595202433.5M816933.04190130350.7370×11070110242839M10141324.6210130701.2675×11575115242839M10141314.9195125701.3380×12080120242839M10141315.2180120701.485×12585125242839M10161486.3195130701.4990×13090130242839M10161476.6180125701.5395×13595135242839M10181677.9195135701.62100×1451O0145293347M12141929.61951351252.01105×150105150293347M12141909.981851301252.1110×155110155293347M121419110.51801251252.15120×165120165293347M121621813.11851351252.35125×170125170293347M121822013.781801301252.95130×180130180343852M122027217.61651201253.51140×190140190343852M122229820.91651251253.85150×200150200343852M122432424.21701251254.07160×210160210343852M1226350281701301254.3170×225170225384460M142238632.81601201905.78180×235180235384460M142442037.81651251906.05190×250190250465268M142849046.51501151908.25200×260200260465268M143052552.51501151908.6521O×275210275505674M162459962.8915111529510.1220×285220285505674M16266206815011529511.22240×305240305505674M163071585.516012529512.2250×315250315505674M16327689616212529512.7260×325260325505674M163480010416513029513.2280×355280355606686.5M183291512814511540519.2300×375300375606686.5M1836102015315012040520.5320×4053204057278100.5M2036131021015012058029.6340×4253404257278100.5M2036131022414511558031.1360×4553604558490116M2236163029414511578042.2380×4753804758490116M2236162030813511078044400×4954004958490116M2236161032213010578046420×5154205158490116M2240178037413511078050450×55545055596102130M24402050461.25124100100065480×58548058596102130M24422160518.4124100100071500×60550060596102130M24442240560123100100072.6530×64053064096102130M24452330617121100100083.6560×67056067096102130M24482440680120100100085600×71060071096102130M24502580775118100100091630×74063074096102130M24522680844117105100094670×78067078096102130M245628209441161001000101710×82071082096102130M2460297010541151001000106750×86075086096102130M2462313011731151001000112800×91080091096102130M2466326013001121001000118850×96085096096102130M2470350014871131001000125900×1010900101096102130M2475368016501121001000132950×1060950106096102130M24803870183811210010001391000×11101000111096102130M2482400020001101001000146注：SWLA020(Z2)型胀紧联结套螺钉的机械性能等级为12.9级
