G-3
克泰液压产品样本 2018 年 9 月
LCBCA/LCBCG/LCBCH
平衡阀
标准型 /standard
A cartridge-style standard
capacity counterbalance valve
平衡阀
SYMBOL
压力 – 流量曲线 PRESSURE DROP VS.FLOW
说明 DESCRIPTION
Counterbalance valves with pilot assist are meant for control on overrunning load. The
check valve allows free flow from port ② to port ① while a direct-acting, pilot-assisted
relief valve controls flow from port ① to port ② . Pilot assist at port ③ lowers the
effective setting of the relief valve at a rate determined by the pilot ratio.
带先导开启平衡阀用于控制超越负载工况。油液从②口到①口单向自由流动；油液经
直动，先导辅助从①口溢流到②口，③口是溢流辅助控制口，按控制比降低溢流功能
的有效设定值。
• Counterbalance valves should be set at least 1.3 times the maximum load induced
pressure.
最大设定压力至少为最大负载压力的 1.3 倍。
• Backpressure at port ② adds to the effective relief setting at a ratio of 1 plus the pilot
ratio times the backpressure.
②口的背压按“控制比 +1”的倍数加到溢流阀的设定值上即增加值 =(1+ 控制比 )
×
压
力值。
• Reseat exceeds 85% of set pressure when the valve is standard set. Setting lower
than the standard set pressure may result in lower reseat percentages.
标准设定时 , 闭合压力值大于设定压力值的 85%；低于标准设定 , 则闭合压力值的百
分比相应降低。
• Factory pressure setting established at 30cc/min(2 in
3
/min).
工厂的设定是指当溢流阀开启（流量为 30cc/min）时的压力。
工作 OPERATION
特性 FEATURES
最大设定值(Max. Setting):
280 bar (LCBCA)
350 bar (LCBCG/LCBCH)
最大负载(Max. Recommended Load Pressure at Max. Setting):
215bar(LCBCA)
270bar(LCBCG/LCBCH)
流量(Flow):
See PRESSURE DROP VS.FLOW graph.
内泄漏(Internal Leakage):
5 drops/min(滴/分).
控制比(Pilot Ratio):
(LCBCA) 3: 1；(LCBCG) 4.5: 1;(LCBCH) 10: 1
温度(Temperature):
-40
°
F to +250
°
F(-40
°
C to +120
°
C)
过滤(Filtration):
See page (参见) N-1
油液(Fluids):
Mineral-based fluids with viscosities of 7.4 to 420 cSt.(矿物油粘度)
插孔(Cavity):
SUN T-11A, See page M-6
阀块材料(Body Material):
6061-T6 aluminum alloy rated to 207bar, Steel & Ductile iron rated to 350bar
6061-T6铝,允许使用最大压力207bar 钢和球铁允许使用最大压力350bar
技术参数 SPECIFICATIONS
32cSt oil @ 40°C
G-4
克泰液压产品样本 2018 年 9 月
G
订货代号 TO ORDER
安装尺寸 INSTALLATION DIMENSIONS
Unit=Millimeters
LCB * * – * * * – * *
7654321
阀块油口 Body Porting
空白 Blank
= 不带阀块 None
6T
=SAE6
3G
=G 3/8
8T
=SAE8
4G
= G 1 / 2
7
阀块详见章节 K-17―K-22
其它螺纹油口也是可选择的
Other Porting is Available
弹簧调压范围
Spring Ranges
5
流量 Flow
C
=60L/min
控制比 Pilot Ratio
A
=3:1;
G
=4.5:1;
H
=10:1
2
3
控制方式 Control
L
=Standard Screw Adjustment
4
油封 Seal Kits
N
= 丁晴橡胶 Buna N
V
= 氟橡胶 Viton
6
弹簧调压 LCBCA:
H
=1000-4000psi(70-280bar)
Preset:3000psi(210bar)(Check:1.7bar)
I
=400-1500psi(28-105bar)
Preset:1000psi(70bar)(Check:1.7bar)
A
=1000-4000psi(70-280bar)
Preset:3000psi(210bar)(Check:0.3bar)
B
=400-1500psi(28-105bar)
Preset:1000psi(70bar)(Check:0.3bar)
弹簧调压 LCBCG:
J
=2000-5000psi(140-350bar)
Preset:3000psi(210bar)(Check:1.7bar)
K
=1000-2500psi(70-175bar)
Preset:2000psi(140bar)(Check:1.7bar)
C
=2000-5000psi(140-350bar)
Preset:3000psi(210bar)(Check:0.3bar)
D
=1000-2500psi(70-175bar)
Preset:2000psi(140bar)(Check:0.3bar)
弹簧调压 LCBCH:
C
=2000-5000psi(140-350bar)
Preset:3000psi(210bar)(Check:0.3bar)
D
=1000-2500psi(70-175bar)
Preset:2000psi(140bar)(Check:0.3bar)
J
=2000-5000psi(140-350bar)
Preset:3000psi(210bar)(Check:1.7bar)
K
=1000-2500psi(70-175bar)
Preset:2000psi(140bar)(Check:1.7bar)
功能
LCB
= 平衡阀
Counterbalance Cartridge Valve
1
