Z2FS6-5-4X/2QV
Rexroth
R900476838
叠加板式阀。
油口布置符合DIN 24340 A型。
油口布置符合ISO 4401-03-02-0-05，带定位孔。
用于限制两个执行器油口的主流量或先导流量。
四种调节方式：
• 带锁紧螺母及保护帽的调节螺钉。
• 带刻度的可锁定旋钮；带内六角及刻度的调节螺杆；带刻度旋钮。
用于进油或回油节流。
Z2FS型阀是叠加板式双单向节流阀，用于限制一个或两个执行器油口的主流量或先导流量。
两个相互对称布置的单向节流阀限制一个方向的流量，并允许反向自由回流。
采用进油节流时，液压油从通道 A➀ 经阀座（2）与节流阀芯（3）形成的节流点（1），流向执行器 A➁。可通过调节螺钉（4）轴向调节节流阀芯（3），以改变节流点（1）的开度。
执行器A➁的回油推动阀座（2）克服弹簧（5），向节流阀芯（3）移动，使其作为单向阀允许无阻流动。根据安装位置，节流作用可发生在进油或回油方向。
主油流限制（“2Q”型）
为调节执行器速度（限制主油流），双节流单向阀安装在换向阀与底板之间。
先导油流量限制（“1Q”型）
用于先导式换向阀时，双单向节流阀可通过限制先导流量来调节切换时间，此时安装于先导控制阀与主阀之间。
（进油节流）
➀ | component side |
➁ | plate side |
01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | ||
Z2FS | 6 | – | 4X | / | * |
01 | Twin throttle check valve, sandwich plate design | Z2FS |
02 | Size 6 | 6 |
03 | Throttle check valve side A and B | – 1) |
Throttle check valve side A | A | |
Throttle check valve side B | B | |
Adjustment type | ||
04 | Setscrew with lock nut and protective cap | 2 |
Lockable rotary knob with scale | 3 2) | |
Spindle with internal hexagon and scale | 5 | |
Rotary knob with scale | 7 | |
05 | Component series 40 … 49 (40 … 49: unchanged installation and mounting dimensions) | 4X |
06 | With fine adjustment | 1Q |
Standard version | 2Q | |
Seal material | ||
07 | NBR seals | no code |
FKM seals | V | |
Observe compatibility of seals with hydraulic fluid used. (Other seals upon request) | ||
08 | no code | |
With locating hole | /60 3) | |
09 | Further details in the plain text | * |
| 1) Identical adjustment types on sides A and B | |
| 2) H-key with material no. R900008158 is included in the scope of delivery. | |
| 3) Locking pin ISO 8752-3x8-St, material no. R900005694 (separate order) |
Preferred types and standard units are contained in the EPS (standard price list).
Size | 6 | ||
Weight (approx.) | kg | 0.8 | |
Installation position | any | ||
Ambient temperature range | °C | -20 … +80 | |
Size | 6 | ||
Maximum operating pressure | bar | 315 | |
Maximum flow | l/min | 80 | |
Hydraulic fluid | see table | ||
Hydraulic fluid temperature range | °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 | |
Mineral oils and related hydrocarbons | HL, HLP, HLPD | NBR, FKM | DIN 51524 | |
Environmentally compatible | Insoluble in water | HETG | NBR, FKM |
ISO 15380 |
HEES | FKM | |||
Soluble in water | HEPG | FKM |
ISO 15380 | |
Containing water | Water-free | HFDU, HFDR | FKM |
ISO 12922 |
Containing water | HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) |
NBR | ISO 12922 | |
Important information on hydraulic fluids!
Flame-resistant – containing water:
| ||||
Dimensions in mm
➀ | Component side – porting pattern according to ISO 4401-03-02-0-05 (with locating hole Ø3 x 5 mm deep) |
➁ | plate side – porting pattern according to DIN 24340 form A (without locating hole), or ISO 4401-03-02-0-05 (with locating hole for locking pin ISO 8752-3x8-St; version "/60") |
1 | Name plate |
2 | Adjustment type "2" |
3 | Adjustment type "3" |
4 | Adjustment type "5" |
5 | Adjustment type "7" |
6 | Space required to remove the key |
7 | Valve mounting bores |
8 | Lock nut SW10 |
9 | Setscrew/spindle for flow cross-section adjustment (internal hexagon SW5) |
10 | Identical seal rings for ports A, B, P, T |
11 | Seal ring plate |
12 | for all adjustment types: Left rotation = higher flow Right rotation = lower flow |
13 | Modification from discharge to supply control is realized by rotation of the device around axis "X" – "X" |
14 | Stroke |
15 | Plug screw SW22 |
Notice!
Length and tightening torque of the valve mounting screws must be calculated according to the components mounted under and over the sandwich plate valve.
Valve mounting screws (separate order)
4 hexagon socket head cap screws ISO 4762 - M5 - 10.9
