Created on 07/06/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 2
MODEL
CBEL
2.3:1 pilot ratio, standard capacity counterbalance valve
SERIES 2 / CAPACITY: 120 L/min. / CAVITY: T-2A
3-Port Non-vented
3-Port Non-vented, Fixed Setting
Counterbalance valves with pilot assist are meant to control an overrunning load. The check valve allows free flow
from the directional valve (port 2) to the load (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.
Other names for this valve include motion control valve and over center valve.
TECHNICAL DATA
Pilot Ratio 2.3:1
Maximum Recommended Load Pressure at Maximum Setting 270 bar
Maximum Setting 350 bar
Factory Pressure Settings Established at 30 cc/min.
Maximum Valve Leakage at Reseat 0,3 cc/min.
Adjustment - Number of Counterclockwise Turns to Increase Setting 3.75
Reseat >85% of setting
Locknut Hex Size 15 mm
Locknut Torque 9 - 10 Nm
Seal kit - Cartridge Buna: 990-202-007
Seal kit - Cartridge Polyurethane: 990-002-002
Seal kit - Cartridge Viton: 990-202-006
(L)CONTROL
L Standard Screw Adjustment
C Tamper Resistant - Factory Set
(J)FUNCTIONAL SETTING RANGE
J 2000 - 5000 psi w/25 psi Check (140 -
350 bar w/1,7 bar Check), 3000 psi (210
bar) Standard Setting
C 2000 - 5000 psi w/4 psi Check (140 - 350
bar w/0,3 bar Check), 3000 psi (210 bar)
Standard Setting
D 1000 - 2500 psi w/4 psi Check (70 - 175
bar w/0,3 bar Check), 2000 psi (140 bar)
Standard Setting
(N)SEAL MATERIAL
N Buna-N
V Viton
MATERIAL/COATING
Standard Material/Coating
/AP Stainless Steel, Passivated
/LH Mild Steel, Zinc-Nickel
snhy.com/
CBEL
Model Code Example: CBELLJNCONFIGURATION OPTIONS
Created on 07/06/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 2
K 1000 - 2500 psi w/25 psi Check (70 - 175
bar w/1,7 bar Check), 2000 psi (140 bar)
Standard Setting
TECHNICAL FEATURES
Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
Turn adjustment clockwise to decrease setting and release load.
Full clockwise setting is less than 200 psi (14 bar).
Backpressure at port 2 adds to the effective relief setting at a ratio of 1 plus the pilot ratio times the backpressure.
Reseat exceeds 85% of set pressure when the valve is standard set. Settings lower than the standard set pressure may result in lower reseat percentages.
Sun counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and improved stiffness in the circuit.
Two check valve cracking pressures are available. Use the 25 psi (1,7 bar) check unless actuator cavitation is a concern.
This valve has positive seals between all ports.
All 3-port counterbalance, load control, and pilot-to-open check cartridges are physically interchangeable (i.e. same flow path, same cavity for a given frame size).
Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge
machining variations.
PERFORMANCE CURVES
RELATED MODELS
CBELX Model
