STM公司成立于1976年，总部位于意大利的博洛尼亚 (Bologna) ，如今STM公司已经发展成为一个大型集团公司，在机械传动领域占据着重要的位置，其设计和生产的减速机、电机及机械和电子变速器在全世界范围内享有盛誉。在意大利名列三甲！
STM集团由以下三个公司组成：STM S.p.a., GSM S.p.a., 以及STM Drive S.r.l.。其中GSM S.p.a.生产的是中型及大型功率的减速机和减速电机，极大地扩大了STM的产品供应范围，其卓越的生产能力及产品质量使STM在国际市场上占有着重要地位。
STM和GSM制造了最广泛规格的齿轮箱和减速电机，STM和GSM根据用户的特殊要求，在每一个重机械和轻机械领域都提供了最前沿的技术解决方案。STM&GSM是出色的联盟，使客户不仅信任高科技的产品，而且也使客户信任自己的产品知识和适当的市场策略。STM&GSM的结合是强大的，因此，从今天起STM&GSM的结合也将意味着使客户完全满意。
GSM型号例举：齿轮减速机RX02/814/ABU/58.1/ECE/US/M4-DT US=SPECIAL OUTPUT SHAFT * 110*200MM
STM型号例举：型号:
RI28FL,RI40FL,RI50FL,RI63FL,RI70FL,RI85FL,RI11FLMRI130FL,RI150FL,
RI180FL,
RI28D,RI40DMRI50D,RI63D,RI70D,RI85D,RI110D,RI130D,RI150D,RI180D,
RMI28FL,RMI40FL,RMI150FL,RMI63FL,RMI70FL,RMI85FL,RMI110FL,RMI130FL,
RMI150FL,RMI180FL
RI28P,RMI28P,RI40PP,RI70PP,RI85PP,RI110P,RI130P,RI150P,RI180P,RMI40PP,
RMI70PP,RMI85P,RMI110P,RMI130P,RMI150P,RMI180P
RI28S,RI40SMRI50SMRI63S,RI70S,RI85S,RI110S,RI130S,RI150S,RI180S
RMI128S,RMI40S,RMI50S,RMI63S,RMI70S,RMI85SMRMI110S,RMI130S,RMI150S,
RMI180S
RMI28I,RMI40I,RMI50I,RMI63I,RMI70I,RMI85I,RMI110I,RMI130I,RMI150I,
RMI180I
RMI28D,RMI40D,RMI50D,RMI63D,RMI70D,RMI85D,RMI110D,RMI130D,RMI150D,
RMI180D
CRI28S,CRI40S,CRI50S,CRI63S,CRI70S,CRI85S,CRI110S,CRI130S,CRI150S,
CRI180S
CRMI28S,CRMI40S,RMI50S,CRMI63S,CRMI70S,CRMI110S,CRMI130S,CRMI150S,
CRMI180S
CRI28I,CRI140I,CRI50I,CRI63I,CRI85I,CRI110I,CRI130I,CRI150I,CRI180I
CRMI28I,CRMI40I,CRMI50I,CRMI63I,CRMI70I,CRMI85I,CRMI110I,CRMI130I,
CRMI150I,CRMI180I
CRI28D,CRI40D,CRI50D,CRI63D,CRI70D,CRI85D,CRI110D,CRI130D,CRI150D,
CIR180D
CRMI28DMCRMI40D,CRMI50D,CRMI63D,CRMI70D,CRMI85D,CRMI110D,CRMI130D,
CRMI150DMCRMI180D
CRI28A,CRI40A,CRI50A,CRI63A,CRI70A,CRI85A,CRI110A,CRI130A,CRI150A,
CRI180A
CRI28P,CRI40P,CRI50P,CRI63P,CRI70P,CRI85P,CRI110P,CRI130P,CRI150P,
CRI180P
