2FRE

阀带压力补偿器，用于经压力补偿的流量控制。
比例电磁铁驱动。
用于底板安装，油口布置符合ISO 6263。
计量节流口带电气位置闭环控制。
位置传感器线圈可沿轴向移动，因此无需改动电液控制电子装置，即可方便地标定计量节流口的零点。
阀、电气放大器及放大模块的制造偏差较小。
通过整流叠加板，实现双向流量控制。

01	02		03		04	05	06	07	08
2FRE		-	4X	/		B	K4		*

01	Proportional flow control valve in 2-way version		2FRE
02	Size 10		10
02	Size 16		16
03	Component series 40 … 49 (40 … 49: unchanged installation and mounting dimensions)		4X
Rated flow A → B, flow characteristics
04	Size 10
	Linear	Up to 10 l/min	10L
		Up to 16 l/min	16L
		Up to 25 l/min	25L
		Up to 50 l/min	50L
		Up to 60 l/min	60L
	Progressive with rapid traverse (fine control range)	With rapid traverse up to 40 l/min	5QE
		Up to 5 l/min	5Q
		Up to 10 l/min	10Q
		Up to 16 l/min	16Q
		Up to 25 l/min	25Q
	Size 16
	Linear	Up to 80 l/min	80L
		up to 100 l/min	100L
		Up to 125 l/min	125L
		Up to 160 l/min	160L
05	Withpressure compensator stroke limitation		B
Electrical connection
06	Without mating connector, connector DIN EN 175301-803-A (proportional solenoid) and GSA20 (position transducer)		K4
07	NBR seals, suitable for mineral oil HL and HLP according to DIN 51524		M
07	FKM seals		V
08	Further details in the plain text		*

一般

Type		2FRE
Size		10	16
Component series		4X
Installation position		Any
Weight	kg	6.1	8.5
Storage temperature range	°C	-20 … +80
Ambient temperature range	°C	-20 … +70

液压

Type			2FRE
Size			10	16
Maximum operating pressure		bar	315
Maximum operating pressure	Anschluss A	bar	315
Maximum flow		l/min	60	160
	Linear	l/min	60	160
	progressive with rapid traverse	l/min	40
Minimum pressure differential		bar	3 … 8	6 … 10
Pressure differential with free return flow B → A			See characteristic curve
Temperature drift	hydraulic and electric	%	0.1
Temperature drift	pressure-compensated	%	± 2
Hydraulic fluid temperature range		°C	-20 … +80
Viscosity range		mm²/s	15 … 380
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1)			Class 20/18/15 according to ISO 4406 (c)
Hysteresis		%	< ± 1
Repetition accuracy		%	< 1
Manufacturing tolerance	at command value 33 %	%	≤ ± 2
Manufacturing tolerance	at command value 100 %	%	≤ ± 5

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	FKM	DIN 51524	90220
Flame-resistant - water-free	HFDU (glycol base)	FKM	ISO 12922	90222
Important information on hydraulic fluids: For more information and data on the use of other hydraulic fluids please contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). The ignition temperature of the hydraulic fluid used must be 50 K higher than the maximum surface temperature.

电气

Type			2FRE
Voltage type			Direct voltage
Maximum solenoid current		A	1.5
Solenoid coil resistance	Cold value at 20 °C	Ω	10
Solenoid coil resistance	Maximum hot value	Ω	13.9
Duty cycle		%	100
Protection class according to DIN EN 60529			IP65 (If a suitable and a correctly mounted mating connector are used.)

电气参数，感应式位置传感器

Type			2FRE
Coil resistance at 20°C	Total resistance between 1 and 2	Ω	31.5
	Total resistance between 2 and PE	Ω	45.5
	Total resistance between PE and 1	Ω	31.5
Type of protection according to EN 60529			IP65 (If a suitable and a correctly mounted mating connector are used.)
Inductivity		mH	6 ... 8
Oscillator frequency		kHz	2.5
Electrical position measurement system			Differential throttle
Nominal stroke		mm	4

Proportional flow control valve

Dimensions in mm

NG	10	16
B1	95	123,5
B2	76	101,5
B3	9,5	11
B4	79,4	102,4
B5	-	0,8
B6	97	126
B7	10,5	12
ØD1	9	11
ØD2	15	18
H1	245	255,5
H2	200	210
H3	210	140
H4	48	51
L1	102,5	123,5
L2	82,5	101,5
L3	10	11
L4	24	31
L5	62,5	72,5
L6	23,8	28,6
L7	105	126
L8	11	12

1	Valve housing
2	Proportional solenoid with inductive position transducer
3.1	Mating connector for proportional solenoid, separate order
3.2	Mating connector for inductive position transducer, separate order
4	Space required to remove the mating connector
5	Pressure compensator stroke limitation: Grub screw with internal hexagon SW3, lock nut SW10
6	Valve mounting screws (separate order)
7	Identical seal rings for ports A and B
8
9	Port B
10.1	Locking pin with NG10 and 16
10.2	Locking pin with NG16
11.1	Locating hole for locking pin with NG10 and 16
11.2	Locating hole for locking pin with NG16
13	Name plate
14	Machined valve contact surface: NG10: Porting pattern according to ISO 6263-06-05-0-97 NG16: Porting pattern according to ISO 6263-09-05-0-97

Valve mounting screws NG10 (separate order):

without rectifier sandwich plate:

4 hexagon socket head cap screws ISO 4762 - M8 x 60 - 10.9-flZn-240h-L

Tightening torque MA = 30 Nm ± 10 % , material no. R913000217

or

4 hexagon socket head cap screws ISO 4762 - M8 x 60 - 10.9

Tightening torque MA = 34 Nm ± 10 %

with rectifier sandwich plate:

4 hexagon socket head cap screws ISO 4762 - M8 x 120 - 10.9-flZn-240h-L

Tightening torque MA = 30 Nm ± 10 % , material no. R913000423

or

4 hexagon socket head cap screws ISO 4762 - M8 x 120 - 10.9

Tightening torque MA = 34 Nm ± 10 %

Notice:

The tightening torque of the hexagon socket head cap screws refers to maximum operating pressure!

Valve mounting screws NG16 (separate order):

without rectifier sandwich plate:

4 hexagon socket head cap screws ISO 4762 - M10 x 70 - 10.9-flZn-240h-L

Tightening torque MA = 64 Nm ± 10 % , material no. R913000126

or

4 hexagon socket head cap screws ISO 4762 - M10 x 70 - 10.9

Tightening torque MA = 75 Nm ± 10 %

with rectifier sandwich plate:

4 hexagon socket head cap screws ISO 4762 - M10 x 160 - 10.9-flZn-240h-L

Tightening torque MA = 64 Nm ± 10 % , material no. R913000072

or

4 hexagon socket head cap screws ISO 4762 - M10 x 160 - 10.9

Tightening torque MA = 75 Nm ± 10 %

Notice:

The tightening torque of the hexagon socket head cap screws refers to maximum operating pressure!

Rectifier sandwich plate

Dimensions in mm

NG	10	16
B1	95	123,5
B2	76	101,5
B3	9,5	11
B4	79,4	102,4
B5	-	0,8
ØD1	9	11
H5	60	85
H6	30	40
L1	102,5	123,5
L2	82,5	101,5
L3	10	11
L6	23,8	28,6

NG	10	16
B1	95	123,5
B2	76	101,5
B3	9,5	11
B4	79,4	102,4
B5	-	0,8
B6	97	126
B7	10,5	12
ØD1	9	11
ØD2	15	18
H1	245	255,5
H2	200	210
H3	210	140
H4	48	51
L1	102,5	123,5
L2	82,5	101,5
L3	10	11
L4	24	31
L5	62,5	72,5
L6	23,8	28,6
L7	105	126
L8	11	12

1	Valve housing
6	Valve mounting screws (separate order)
7	Identical seal rings for ports A and B
8	Port A1 (A2)
9	Port B1 (B2)
10	Locking pin with NG10 and 16
11.1	Locating hole for locking pin with NG10 and 16
11.2	Locating hole for locking pin with NG16
12	Rectifier sandwich plate
13.1	Name plate (rectifier sandwich plate NG10)
13.2	Name plate (rectifier sandwich plate NG16)
15	Subplate (separate order)

2FRE ... 型比例流量阀具备二通功能，可根据电气指令值控制流量，并进行压力补偿及大范围温度补偿。

该结构主要由阀体（1）、带感应式位置传感器的比例电磁铁（2）、计量节流口（3）、压力补偿器（4）、行程限制器（5）及单向阀（6）组成。指令值电位器的0至100%刻度确定流量设定。指令值经放大器及比例电磁铁调节节流口（3），感应式位置传感器测量其位置，位置控制修正相对指令值的偏差。

压力补偿器（4）始终保持计量节流口（3）两端压降恒定，因此流量获得压力补偿。

若流量控制器的使用范围明显小于阀的最大额定流量范围，可通过限制压力补偿器（4）的行程来缩短其响应时间，从而减小不希望出现的启动突跳。

若行程限制器（5）上的紧定螺钉处于最左端止点（旋出位置），则不限制压力补偿器的行程。

优化的计量节流口设计使温度漂移较小。

指令值为0%时，计量节流口关闭。电源故障或感应式位置传感器断线时，计量节流口也会关闭。

可从 0% 指令值平稳启动。通过电气放大器中的两个斜坡环节，可延时打开和关闭计量节流口。

通过单向阀（6），可由B向A自由回流。在比例流量控制阀下方另装Z4S...型整流叠加板，可调节执行器的进油及回油流量。

产品分类

一般

液压

电气

电气参数，感应式位置传感器

Proportional flow control valve

Valve mounting screws NG10 (separate order):

without rectifier sandwich plate:

with rectifier sandwich plate:

Valve mounting screws NG16 (separate order):

without rectifier sandwich plate:

with rectifier sandwich plate:

Rectifier sandwich plate

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