DZ 20-1-5X/315M
Rexroth
R900538019
可用作预紧阀、顺序阀及切换阀。
用于底板安装。
油口布置符合ISO 5781。
插装阀结构。
四种压力等级。
四种调节方式：旋钮；带六角及保护帽的调节套；带刻度的可锁定旋钮；带刻度旋钮。
可选单向阀。
DZ型阀是先导式顺序阀。
用于根据压力接入第二个系统。
顺序阀主要由带主阀芯插装件（7）的主阀（1）、带调节装置的先导阀（2），以及可选单向阀（3）组成。
根据先导油的供油、回油方式及相应功能，可作如下区分：
预加载阀 DZ. . -.-5X/…（控制油路 4.1、12 和 13 开通；控制油路 4.2、14 和 15 关闭）
A通道压力通过控制管路（4.1）作用于先导阀（2）的先导阀芯（5），同时经喷嘴（6）作用于主阀芯（7）的弹簧侧。P通道压力超过弹簧（8）设定值时，先导阀芯（5）克服弹簧移动。主阀芯（7）弹簧侧油液经喷嘴（9）、控制边（10）及控制管路（11）、（12）流入B通道，使主阀芯处形成压降。主阀芯上移，接通A至B。A通道压力比B通道压力高出的值由弹簧（8）设定。先导阀芯（5）的泄漏油经先导阀弹簧腔（17）及控制管路（13）内部流入B通道。若二次回路B通道压力超过A通道，可选装单向阀（3），实现自由回流。
预加载阀 DZ. . -.-5X/.X…（控制油路 4.2、12 和 13 开通；控制油路 4.1、14 和 15 关闭）
该阀的基本功能与 DZ. . -.-5X/… 型相同。不过，“X”型的开启信号通过外部控制油路 X（4.2）输入。
顺序阀 DZ. . -.-5X/.Y…（控制油路 4.1、12 和 14 或 15 开通；控制油路 4.2 和 13 关闭）
该阀的基本功能与 DZ. . -.-5X/… 型相同。不过，在“Y”型中，先导阀芯（5）处产生的泄漏油必须经管路（14）或（15）无压排回油箱。先导油经管路（11）和（12）导入 B 通道。
循环阀 DZ. . -.-5X/.XY…（控制油路 4.2、14 或 15 开通；控制油路 4.1、12 和 13 关闭）
该阀的基本功能与 DZ. . -.-5X/… 型相同。不过，“XY”型的开启信号通过外部控制油路 X（4.2）输入。先导阀芯（16）孔内的先导油及产生的泄漏油，必须经管路（14）或（15）无压排回油箱。
01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | |||
DZ | – | – | 5X | / | * |
01 | Pressure sequence valve, pilot-operated | DZ |
02 | Valve complete (subplate mounting) | no code |
Pilot control valve without main spool insert (cartridge valve; do not enter nominal size) | C | |
Pilot control valve with main spool insert (cartridge valve; enter valve size 30) | C | |
03 | Size 10 | 10 |
Size 25 | 20 | |
Size 32 | 30 | |
Adjustment type | ||
04 | Rotary knob | 1 |
Sleeve with hexagon and protective cap | 2 | |
Lockable rotary knob with scale | 3 1) | |
Rotary knob with scale | 7 | |
05 | Component series 50 … 59 (50 … 59: unchanged installation and connection dimensions) | 5X |
Set pressure | ||
06 | 50 bar | 50 |
100 bar | 100 | |
200 bar | 200 | |
315 bar | 315 | |
Pilot oil supply | ||
07 | Pilot oil supply internal, pilot oil return internal | no code |
External pilot oil supply, internal pilot oil return | X 2) | |
Internal pilot oil supply, external pilot oil return | Y 2) | |
External pilot oil supply, external pilot oil return | XY | |
08 | With check valve 2) | no code |
Without check valve | M | |
Seal material (observe compatibility of seals with hydraulic fluid used, see "Technical data") | ||
09 | NBR seals | no code |
FKM seals | V | |
10 | Further details in the plain text | * |
| 1) | H-Key with material no. R900008158 is included in the scope of delivery. |
| 2) | Not with version "C" |
Size | 10 | 25 | 32 | ||
Weight | "DZ" | kg | 3.4 | 5.3 | 8 |
"DZC" | kg | 1.2 | |||
"DZC 30" | kg | 1.5 | |||
Installation position | any | ||||
Ambient temperature range | NBR seals | °C | -30 … +80 | ||
FKM seals | °C | -20 … +80 | |||
Size | 10 | 25 | 32 | ||
Maximum operating pressure | Anschluss A | bar | 315 | ||
Port B | bar | 315 | |||
Port X | bar | 315 | |||
Maximum counter pressure | Port Y | bar | 315 | ||
Minimum set pressure | flow-dependent, see "characteristic curves" | ||||
Maximum set pressure | bar | 50 100 200 315 | |||
Maximum flow | l/min | 200 | 400 | 600 | |
Hydraulic fluid | see table "Hydraulic fluid" | ||||
Hydraulic fluid temperature range | NBR seals | °C | -30 … +80 | ||
FKM seals | °C | -20 … +80 | |||
Viscosity range | mm²/s | 10 … 800 | |||
Maximum admissible degree of contamination of the hydraulic fluid 1) | Class 20/18/15 according to ISO 4406 (c) | ||||
| 1) | The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter. |
Hydraulic fluid | Classification | Suitable sealing materials | Standards | Data sheet | |
Mineral oils | HL, HLP, HLPD, HVLP, HVLPD | NBR, FKM | DIN 51524 | 90220 | |
Bio-degradable | Insoluble in water | HETG | NBR, FKM | ISO 15380 | 90221 |
HEES | FKM | ||||
Soluble in water | HEPG | FKM | ISO 15380 | ||
Flame-resistant | Water-free | HFDU (glycol base) | FKM | ISO 12922 | 90222 |
HFDU (ester base) | FKM | ||||
HFDR | FKM | ||||
Containing water | HFC (Fuchs: Hydrotherm 46M, Renosafe 500; | NBR | ISO 12922 | 90223 | |
Important information on hydraulic fluids:
| |||||
Dimensions in mm
| Required surface quality of the valve contact surface |
1 | Name plate |
2.1 | Port Y for external pilot oil return at version "XY" or spring chamber discharge at version "Y" |
2.2 | Port Y (G1/4) optionally for external pilot oil return at version "XY" or spring chamber discharge at version "Y" |
4 | Adjustment type "1" |
5 | Adjustment type "2" |
6 | Adjustment type "3" |
7 | Adjustment type "7" |
8 | Hexagon SW10 |
9 | Space required to remove the key |
10 | Identical seal rings for ports A and B |
11 | Identical seal rings for ports X, Y, Y1 and Y2 |
12 | Valve mounting bores |
13 | Locking pin |
NG | L1 | L2 | L3 | L4 | L5 | L6 | L7 | L8 | L9 | L10 | B1 | B2 | B3 | B4 | B5 | H1 | H2 | H3 |
mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | |
| 10 | 96 | 35.5 | 33 | 42.9 | 21.5 | - | 7.2 | 21.5 | 31.8 | 35.8 | 85 | 50 | 66.7 | 58.8 | 7.9 | 112 | 92 | 28 |
| 25 | 116 | 37.5 | 35.4 | 60.3 | 39.7 | - | 11.1 | 20.6 | 44.5 | 49.2 | 102 | 59.5 | 79.4 | 73 | 6.4 | 122 | 102 | 38 |
| 32 | 145 | 33 | 29.8 | 84.2 | 59.5 | 42.1 | 16.7 | 24.6 | 62.7 | 67.5 | 120 | 76 | 96.8 | 92.8 | 3.8 | 130 | 110 | 46 |
Size | Quantity | Hexagon socket head cap screws | Material number |
16 | 4 | ISO 4762 - M10 x 50 - 10.9 (Friction coefficient μtotal = 0.09 … 0.14) Tightening torque MA = 60 Nm | R913015580 |
25 | 4 | ISO 4762 - M10 x 60 - 10.9 (Friction coefficient μtotal = 0.09 … 0.14) Tightening torque MA = 60 Nm | R913014770 |
32 | 4 | ISO 4762 - M10 x 70 - 10.9 (Friction coefficient μtotal = 0.09 … 0.14) Tightening torque MA = 60 Nm | R913014772 |
Notices:
For reasons of stability, exclusively the specified valve mounting screws may be used.
The tightening torques are guidelines, referring to the maximum operating pressure and when using a manual torque wrench (tolerance ±10 %).
Subplates (separate order) with porting pattern according to ISO 4401, see data sheet 45100.
Dimensions in mm
1 | Name plate |
2.2 | Port Y (G1/4) optionally for external pilot oil return at version "XY" or spring chamber discharge at version "Y" |
3.1 | Port Y1 at cartridge valve for pilot oil return at version "XY" or spring chamber discharge at version "no code", "X" and "Y" |
3.2 | Port Y2 at cartridge valve for pilot oil return at version "no code", "X" and "Y" |
4 | Adjustment type "1" |
5 | Adjustment type "2" |
6 | Adjustment type "3" |
7 | Adjustment type "7" |
8 | Hexagon SW10 |
9 | Space required to remove the key |
11 | Identical seal rings for ports X, Y, Y1 and Y2 |
12 | Valve mounting bores |
14 | Main spool insert with nozzle |
15 | Seal ring (main spool) |
16 | Support ring (main spool) |
Size | Quantity | Hexagon socket head cap screws | Material number |
– | 4 | ISO 4762 - M8 x 40 - 10.9 (Friction coefficient μtotal = 0.09 … 0.14) Tightening torque MA = 31 Nm ±10 % | R913015798 |
Notices:
For reasons of stability, exclusively the specified valve mounting screws may be used.
The tightening torques are guidelines, referring to the maximum operating pressure and when using a manual torque wrench (tolerance ±10 %).
Dimensions in mm
17 | Versions "X" and "XY" without bore |
18 | Notice: Bore Ø32 mm can cut into Ø45 mm at any position. However, it must be observed that the connection and valve mounting bores are not damaged. |
19 | Support ring and seal ring are to be inserted into this bore before assembly of the main spool. |
