首先用于安全保護(hù)時(shí)，將壓力繼電器設(shè)置在夾緊液壓缸的一端，液壓泵啟動(dòng)后，首先將工件夾緊，此時(shí)夾緊液壓缸的右腔壓力升高，當(dāng)升高到壓力繼電器的調(diào)定值時(shí)，壓力繼電器動(dòng)作，發(fā)出電信號(hào)使2YA通電，于是切削液壓缸進(jìn)刀切削。在加工期間，壓力繼電器微動(dòng)開(kāi)關(guān)的常開(kāi)觸點(diǎn)始終閉合。若工件沒(méi)有夾緊，壓力繼電器2斷開(kāi)，于是2YA斷電，切削液壓缸立即停止進(jìn)刀，從而避免工件未夾緊被切削而出事故。[1] 
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常用型號(hào)有：
AGMZO-AE-10/210 10 
AGMZO-AE-10/315 10  
AGMZO-AE-20/315/Y 10 
AGMZO-AE-32/315  
AGMZO-TER-010/210/I 
AGMZO-TER-10/100/I 
AGMZO-TER-10/210EFG551H417
REXROTH力士樂(lè)比例伺閥0811404832400590086 DDRRZ-7040-2-2 24D S444C
400590085 DBDSB-1LG-250-2-3 24D
400590082 DBDRB-1LG-230-2-3 24D
400590077 DBDRB-1LG-230-2-3 12D M100
400590052 DDRRZ-7040-2-2 24D
400590053 DDRRZ-7040-2-H-2 24D
400590100 DPRA-116-3-3 24D AUSLAUF
400590064 DDRRZ-7020-4-2 12D
400590073 DBDRB-1LG-100-3-3 24D
400590074 DBDRB-1LG-063-4-3 24D
400590076 DBDRB-1LG-350-2-3 12D
400590070 DBDRB-1LG-350-2-3 24D
400590048 DDRRZ-7020-4V-2 24D
400590101 DPRA-106-3-3 24D AUSLAUF
400590104 DPRA-130-3-3 24D AUSLAUF
400590155 DBDRB-1L-230-2-3 12D
400590153 DRDRA-7GG-03-3-2 24D J
400590148 DBDRB-1L-100-3-3 12D
400590147 DBDRB-1L-160-3-3 12D
400590146 DBDRB-1L-160-3-3 24D
400590145 DBDRB-1L-350-2-3 24D
400590144 DBDRB-1L-230-2-3 24D
400590143 DBDRB-1L-160-3-3 OMS
400590142 DBDRB-1L-100-3-3 24D
400590141 DBDRB-1L-063-4-3 24D
400590140 DBDRB-1L-025-4-3 24D
ZDR10DP2-5X/210YMV  
ZDR10VP5-3X/200YMV 
ZDR10VP5-3X/315MV  
ZDR10VP6-3X/200YV 
ZDR6DA2-4X/150YV
ZDR6DP1-4X/75YM  
ZDR6DP2-4X/150YM 
ZDR6DP2-4X/210YM 
ZDR6DP2-4X/210YM
DRV10-01-X/0  
DR6DP2-5X/75YM3 
ZDR6DP2-4X/210YM
3DREP6C-14/25A 24N 9K4M 
WEA-LIN-NBA  
PPJB-LBN-HBO/M  
PVFB-LBN-NB3/M   
RBAC-OBN-FAU  
FDCB-LAN-DCV  
CBGA-LHN-HFY  
FSCD-XAN  
 MMV/S   
RDBA-LWN 
 CXHA-XCV  
PBDB-LNN  
PBDB-LEN  
RDDA-LAN-FEU 
RDFA-LSN-CEX SUN庫(kù)存 
CBGA-LHN 
AGMZO-TER-10/315/Y 40  
AGMZO-TER-20/210 
AGMZO-TER-20/315/Y 40 
AGMZO-TERS-PS-010/210/I
先導(dǎo)式減壓閥
AGRCZO-A-10/100/P 10 
AGRCZO-A-10/210 10 
AGRCZO-A-10/210/P 10 
AGRCZO-A-10/315 10 
AGRCZO-A-10/315/P 10 
AGRCZO-A-20/210/R 10  
AGRCZO-AE-10/210 10 
AGRCZO-AE-10/50 10 
AGRCZO-AE-20/210/P 
AGRCZO-TER-10/315 40 
AGRZO-A-10/100/P 
AGRZO-A-10/210/P