确切地说，挖掘机CN201000417CN201000417，当泵的情况日趋恶化，在系统中早巳隐藏着使泵损坏的各种因素，实践证明90％至95％的泵的异常损坏，可大略地归纳为下列几种：1.空气混入2.气蚀3.使用液体污染4.过热5.超压6.使用不适当的工作液体因此，合理的维护、保养和使用液压系统就显得尤为重要了。
3132525251MATCHEDSETWM512.5*Y-(FH)PGP300CASTIRONGEARUNITSPRODUCTINFO3139112203P50A278BEOM17-7-(FH)PGP300CASTIRONGEARUNITSPRODUCTINFO3139112214P50A278BEON25-7H5883-(FH)PGP300CASTIRONGEARUNITSPRODUCTINFO3139115126P50A242BEJR25-11-(FH)PGP300CASTIRONGEARUNITSPRODUCTINFO电磁铁的换向频率过快，热量的堆积比失散怏，电磁铁很快变得力量不够不能*闭合而存在气隙磁阻。
当换向频率过快时，连续高频启动产生的电流会将电磁铁烧坏。
交流电磁铁的换向频率原标准规定为1000次／时，现提高到2000次／时，这对一般用途的电磁铁足以满足使用要求。
3249110146PGP330A296***AB15-65*-(FH)PGP300CASTIRONGEARUNITSPRODUCTINFO3249110147P330A296***AB17-65*-(FH)PGP300CASTIRONGEARUNITSPRODUCTINFO3249110229D330PA01-161H6127**-(FH)PGP300CASTIRONGEARUNITSPRODUCTINFO3249110263PGP330A296***AB*17-65*-(FH)PGP300CASTIRONGEARUNITSPRODUCTINFO三联阀A35-AA4-MB53*3-Y12   四联阀A35-AA4-MB53-MA53*3-Y12五联阀VA35-AA440-DB4-MA4X2-DA4X2-Y55055六联阀A20-AA128-DA53DA53DA53DA53-HB166-HA166-Z16四机250修井机三联阀A35-AA4-MB53-MA53-XDR53-Z16四机250修井机六A20-A128-A53-DA53-DA53-DA53-HB166-HA166-Z16阀片(进)A35-AA4阀片A35-MB53阀片A35-MA53阀片（出）A35-Y12阀片主油泵(原厂件） P50A/P25/IP407/3139115017油泵(OE件） P50A/P25/IP407/3139115017主油泵 P37X28BASD30-7/P75取力器 852XGAKP-F6XS/IT454取力器 852XBAKP-B4XS取力器 880XDAKXM6XK取力器 880XDAKXM6XS取力器 880XDAKPM4XS阀片 VA20-AA440/A20-AA128阀片 VA20-HA333/A20-HA166阀片 VA20-HB333/A20-HB166阀片 VA20-DA3/A20-DA53阀片 VA20-Z440/A20-Z16阀片 VA35-AA440/A35-AA阀片 VA35-MA4/A35-MA53阀片 VA35-MB4/A35-MB53阀片 VG35-RA899/A35-XDR53阀片 VA35-Z550/A35-Z16阀片 A35-Y12/A35-Y55055/A35-Y50050/Y6阀片 VA20-HB330-2阀片 VA20-HA322阀片 VA20-Y44044/VA20-PB44阀片 VA35-DB4阀片 VA35-CA440阀片 VA35-Y35035阀片 A35-DA53/DAV35-DA4 阀片 DVA35-DA8阀片 VA20-DB3阀片 VA20-MA3  阀片A35-XDR53五联阀A35-AA440-MB53-MA53*2*XDX53*2-Z1五联阀VA35-AA440-DB4-MA4X2-DAX2-Y55055   高位两联阀VA20-AA440-DA3X2-Z440四联阀VA20-AA440-DA3X4-Y44044   低位两联阀VA20-AA440-HB333-HA333-Z440二联阀VA35-2MA4-Z16    六联阀VA20-AA440-4DA3-HA333-HB333-Z440VA35-AA440-MA4*2-DA4*2-Y55055  VA35-AA4-MB4-2MA4-XDR53-Z16  VA20-AA440-HB333-HA333-ZA40VA20-AA440-DA3*4-Y44044   VA35-AA440-2MA4-2DA4-DB4-Z55055柯摸索Commercial详细介绍：经营美国柯摸索Commercial各种联阀产品：柯莫索二联阀A35-AA4-XDR53-XDR53-Z16柯莫索三联阀A35-AA4-MB53-MA53-XDR53-Z16柯摸索五联阀A35-AA4-MB53-MA53-MA53-XDR53-XDR53-Z16柯摸索四联阀A35-AA4-MB53-MA53-2XDR53-Z16柯摸索三联阀VA35-AA440-MA4-DA4-DA4-Z550柯摸索六联阀A20-DA35x4-HB166x2-Z16  柯摸索阀片MA53柯摸索五联阀VA35-AA440-DB4-MA4X2-DA4X2-Y55055柯摸索三联阀A35-AA4-MB53X3-Y12柯摸索六联阀A35-AA4-MB53-MA53X3-XDR53X2-柯摸索六联阀A20-AA128-DA53DA53DA53DA53-HB166-HA166-Z16派克，柯摸索VA20-AA440VA35-AA440系列产品VA2012联VA20-AA440-DA3X2-Z440    4联VA20-AA440-4XDA3-Z440        4联VA20-AA440-HB330-HA322-2XDA3-Z440    6联VA20-AA440-4XDA3-HB333-HA333-Z440 2联VA20-AA440-HB330-HA322-Z440         6联VA20-AA128-DA53X4-HB166-HA166-Z16VA3512联VA35-AA440-MA4X2-Z16         3联 VA35-AA440-MB53-MA53-XDR53-Z16 3联VA35-AA440-MB53-MA53-MA53-Y12        4联VA35-AA440-MB53-MA53-MA53-XDR53-Z16 4联VA35-AA440-MA4-MA4-DA4-DA4-Y50055     4联VA35-AA440-MB4-MA4-MA4-XDR53-Z16 4联VA35-AA440-MB53-MA53-XDR53-XDR53-Z16     5联VA35-AA440-MA4-MA4-DA4-DA4-DB4-Z550 5联VA35-AA440-MB53-MA53-MA53-XDR53-XDR53-Z16   5联VA35-AA4-MB4-MA4-MA4-XDR53-XDR53-Z550 5联VA35-AA440-MA4-MA4-DA4-DA4-DB4-Z55055    5联VA35-AA440-MB4-MA4-MA4-XDR53-XDR53-Y35035 5联VA35-AA440-DB4-MA4-MA4-DA4-DA4-Y55055     VG20-AA880-HA723-HB733-Z880VG35-AA880-DB8-Z990   VG35-AA880-HB833-Z990   3479204930  VA20-AA440-DA3X4-Y440443479204031  3489205515    A35-AA4-MB53-MA53-XDR53-Z16VA20-AA440-4DA3-Z440   VA35-AA440-MA4X2-DA4X2-DB4-Z550A35-AA4-MB53-MA53-MA53-XDR53-XDR53-Z16   VA20-AA440-DA3-DA3-DA3-DA3-HB333-HA333-Z440VA35-AA440-MB4-MA4-MA4-XDR53-XDR53-Z550   VA35-AA440-DB4-MA4X2-DA4X2-Y55055A20-AA440-HB330-HA322-Z440    VA35-2XMA4-Z16VA20-AA440-DA3X2-Z440    VA35-AA440-MA53X2-MB53-XDR53-Z16VA20-AA440-DA3X4-Y44044     VA35-AA440-MB53-MA53-XDR53X2-Z16    VA35-AA440-DB4-MA4X2-DA4X2-Y55055VA20-AA440-DA3-DA3-Z440      VA35-AA440-MB4-MA4-MA4-XDR53-XDR53-Y35035VA35-AA440-MA4X2-DA4X2-Y55055       VA35-AA4-MB4-2XMA4-XDR53-Z16VA35-AA440-2XMA4-2XDA4-DB4-Z55055    A35-AA4-MB53-2XMA53-XDR53-Z16*(PJ) 丹尼逊油泵T6DM-B24-3R00-C1P25X378BEIU2573139115017 连续车      联数A35-AA4-MB53-MA53-XDR53-Z16     3VA20-AA440-4DA3-Z440     3VA35-AA440-MA4X2-DA4X2-DB4-Z550     5A35-AA4-MB53-MA53-MA53-XDR53-XDR53-Z16     5VA20-AA440-DA3-DA3-DA3-DA3-HB333-HA333-Z440     6VA35-AA440-MB4-MA4-MA4-XDR53-XDR53-Z550     5VA35-AA440-DB4-MA4X2-DA4X2-Y55055     5A20-AA440-HB330-HA322-Z440     2VA35-2XMA4-Z16     2VA20-AA440-DA3X2-Z440     2VA35-AA440-MA53X2-MB53-XDR53-Z16     4VA20-AA440-DA3X4-Y44044     4VA35-AA440-MB53-MA53-XDR53X2-Z16 53X2-XDR53X2-Z16   5VA35-AA440-DB4-MA4X2-DA4X2-Y55055     5VA20-AA440-DA3-DA3-Z440     2VA35-AA440-MB4-MA4-MA4-XDR53-XDR53-Y35035     5VA35-AA440-MA4X2-DA4X2-Y55055     4VA35-AA4-MB4-2XMA4-XDR53-Z16     4VA35-AA440-2XMA4-2XDA4-DB4-Z55055     5A35-AA4-MB53-2XMA53-XDR53-Z16*(PJ)     4      联数A35-AA4-MB53-MA53-XDR53-Z16     3VA20-AA440-4DA3-Z440     3VA35-AA440-MA4X2-DA4X2-DB4-Z550     5A35-AA4-MB53-MA53-MA53-XDR53-XDR53-Z16     5VA20-AA440-DA3-DA3-DA3-DA3-HB333-HA333-Z440     6VA35-AA440-MB4-MA4-MA4-XDR53-XDR53-Z550     5VA35-AA440-DB4-MA4X2-DA4X2-Y55055     5A20-AA440-HB330-HA322-Z440     2VA35-2XMA4-Z16     2VA20-AA440-DA3X2-Z440     2VA35-AA440-MA53X2-MB53-XDR53-Z16     4VA20-AA440-DA3X4-Y44044     4VA35-AA440-MB53-MA53-XDR53X2-Z16 53X2-XDR53X2-Z16   5VA35-AA440-DB4-MA4X2-DA4X2-Y55055     5VA20-AA440-DA3-DA3-Z440     2VA35-AA440-MB4-MA4-MA4-XDR53-XDR53-Y35035     5VA35-AA440-MA4X2-DA4X2-Y55055     4VA35-AA4-MB4-2XMA4-XDR53-Z16     4VA35-AA440-2XMA4-2XDA4-DB4-Z55055     5A35-AA4-MB53-2XMA53-XDR53-Z16*(PJ)     4VA20-AA128-DA53-DA53-DA53-DA53-HB166-HA16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派克五联阀 修井机阀 派克换向阀 派克VA35 PARKER多路阀 修井机多路阀 VG35多路换向阀 派克多路换向阀] 修井机厂家VA35-AA440-2MA4-2DA4-DB4-Y55055修井机专用派克多路阀