原装继电器ST307-150-B
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而我们知道,当负载为零的时候,如果四通滑阀完全打开,p口压力=t口压力+阀口压力损失(忽略油路上的其它压力损失),如果阀口压力损失很小,t口压力又为零,那么p口的压力不足以供给前置级阀来推动主阀芯,整个伺服阀失效了。所以伺服阀的阀口做得偏小,即使在阀口全开的情况下,也要有一定的压力损失,来维持前置级阀的正常工作。
CG2V-6GW-10
PVH098R01AJ30B252000001001AB010A
DS8P1-06-30-11-1
DS8P1-10-30-11-1
PA5-DG4S4LW-012C-B-60
PA5-DG4S4LW-012N-B-60
DG4V-3-2C-M-U-B6-60
02-101728
507834
DGMPC-5-ABK-BAK-30
DG4V-3-6C-M-U-H7-60
DG4V-5-2NJ-VM-U-H6-20
DG5V-7-6C-M-U-H7-21
DG5V-7-33C-T-M-U-H5-40
DG4V-3S-0F-M-U-H5-60
DGMPC-5-ABK-30
DG4V-5-22AJ-M-U-H6-20
DG4V-5-2AJ-M-U-H6-20
DG17V4-012N-10
DG4V-5-2CJ-M-U-H6-20
DG4V-3-0B-M-U-H7-60
CG5V-8FW-DM-U-H7-11
CG5V-6CW-DM-U-H7-11
KBDG5V-8-2C330N-M2-PE7-H-10
CVI-25-D20-10
KFDG5V-8-33C270N-EX-VM-U1-H1-10
4CT-06-B-21
45V50A-1B22R
4535V60A38-1CC22R
4535V60A38-1CC22R泵芯60
4535V60A38-1CC22R泵芯38
EHA-PAM-291-A20
02-178028 24VDC
300AA00086A
FAR1-16-S-0
SBV11-10-0-0-240AGH
SPC2-10-P-0-500
EEA-PAM-523-A-32
CG2V-8GW-10
DG4V-5-33CJ-M-U-H6-20
DGMX2-5-PP-FW-B-30
EEA-PAM-525-A-32
伺服阀其实缺点极多:能耗浪费大、容易出故障、抗污染能力差、昂贵等等等等,好处只有一个:动态性能是所有液压阀中高的。凭着这一个优点,在很多对动态特性要求高的场合不得不使用伺服阀,如飞机火箭的舵机控制、汽轮机调速等等。动态要求低一点的,基本上都是比例阀的天下了。
一般说来,好像伺服系统都是闭环控制,比例多用于开环控制;其次比例阀类型要多,有比例压力、流量控制阀等,控制比伺服要灵活一些。从他们内部结构看,伺服阀多是零遮盖,比例阀则有一定的死区,控制精度要低,响应要慢。但从发展趋势看,特别在比例方向流量控制阀和伺服阀方面,两者性能差别逐渐在缩小,另外比例阀的成本比伺服阀要低许多,抗污染能力也强!
DG4V-5-6CJ-M-U-H6-20
DG5S4046CTMUH560
DG5S4-046C-T-M-U-H5-60
DG5V72CTMUH730
DG5V-7-2C-T-M-U-H7-30
DG5V72CTVMUH730
DG5V-7-2C-T-VM-U-H7-30
DG5V76C2TMUH730
DG5V-7-6C-2T-M-U-H7-30
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DGMC23ATGWBTGW41
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DGMC-2-5-AB-FW-BA-FW-30
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DGMC3ATGWB41
DGMC3-AT-GW-B-41
DGMC3PTGW41
DGMC-3-PT-GW-41
DGMCTFWB30
DGMC5-ATFWB30
DGMC-5-AT-FW-B-30
DGMC5PTFWB30
DGMC-5-PT-FW-B-30
DGMC7ATFH20
DGMC-7-AT-FH-20
DGMC7PTGH20
DGMC-7-PT-GH-20
DGMDC3XBK41
DGMDC-3-X-BK-41
DGMDC3XTK41
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DGMDC-3-Y-PK-41
DGMFN3XA1WB1W41
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DGMFN-3-Y-A2W-B2W-41
DGMFN-3-Y-A2W-B2W-41
DGMFN5XA2W30
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DGMFN-5-X-A2W-B2W-30
DGMFN5YA2W30
DGMFN-5-Y-A2W-30
DGMFN5YA2WB2W30
DGMFN-5-Y-A2W-B2W-30
DGMPC3ABK41
DGMPC-3-ABK-41
DGMPC3ABKBAK41
DGMPC-3-ABK-BAK-41
DGMPC3ABMBAM41
DGMPC-3-ABM-BAM-41
DGMPC3ABNBAN41
DGMPC-3-ABN-BAN-41
DGMPC3BAK41
DGMPC-3-BAK-41
DGMPCBK30
DGMPC-5-ABK-30
DGMPCBKBAK30
DGMPCBKBAK30
DGMPC-5-ABK-BAK-30
DGMPC-5-ABK-BAK-30
DGMPC7ABKBAK21
DGMPC-7-ABK-BAK-21
DGMR13PPFWB40
DGMR1-3-PP-FW-B-40
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DGMR1FWB1FW30
709245DGMX-7-PP-GH-10-B
871076DG4V-3-0A-M-U-B6-60
02-310936DG5V-7-6C-T-M-U-B5-40
638539DG3VP-3-102A-V-M-U-B-10
02-159667PVQ40-B2R-SS1S-10-C21D-11
02-352708DGMX-7-PP-G-W-20
977466PLUGCONNECTORWITHLIGHT
694415DGMDC-3-Y-PK-41
565568RV3-10-S-0-36
02-156097DGMX2-3-PP-CH-B-40
02-178049COIL350BAR240AGH
857343PVB5-RSY-21-C-11
02-323061DG4V-5-6CJ-H-VM-U-H6-20
616775DG4V-5-2N-M-U-C6-20
616771DG4V-5-2A-M-U-C6-20
859170DG4V-3-2A-M-U-C6-60
02-352199DG5V-5-2N-T-M-U-C5-20
02-110822DG5V-7-6C-M-U-C6-30
02-356397DG17V4-016N-10
94059C2-830-S3
565460KFDG4V-5-33C50N-Z-M-U1-H7-20
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720AR00104AV20P-1S11T-38C6D12R
565465DG4V-3-6C-M-U-H7-60
02-323187DGMC2-3-AT-CW-BT-BW-41
240040SG1-02-50-11
02-312336CVCS-16-HFV3-W-B29-10
02-104690EEA-PAM-520-A-14
02-311920KXG-8-W100-Z-M-U-H1-10
02-310564CVI-16-HFV-20-A-21-10
02-310563CVI-16-HFV-20-B-21-10
02-318166KADG5V-7-33C170N-X-H-M-F-PD7-H1-11
615424DGMRC-5-Y-AA-BH-11
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507834SUBASSYENCAPSULATEDCOIL(D)
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616784DG4V-5-8CJ-VM-U-H6-20
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02-326018EEA-PAM-581-A-32
871291DG4V-3-2C-M-FW-B6-60
565567RV3-10-S-0-18
615044PCGV-6F-1-10
616772DG4V-5-2NJ-M-U-H6-20
180G24-8NZM(0811402017)比例压力阀
压现货销售博世力士乐BOSCH-Rexroth比例阀:
BOSCH博世0811 402 017比例压力阀
BOSCH博世0811 403 017比例流量阀
BOSCH博世0811 402 003比例压力阀