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Leak-Free Load-Control Valves NS 32
Q
= 1000 l/min [265 gpm], p
max
Seat-valve, two-stage hydraulic, cartridge design
Series CINDY 32-B-C...
1
Description
Whenever large loads are to be precisely moved, placed
and held, when work access platforms must maintain their
position, or when hydraulic presses gates need to withstand
high forces, then CINDY load-control valves from Bucher
Hydraulics are the right solution.
Load-control valves in this series prevent hydraulic actua­
tors from running ahead of the available oil supply.
2
Symbol
Variant A
Influenced by return-line pressure
(pressure in A is additive to opening pilot pressure).
X
Issue: 10.2016
= 420 bar [6000 psi]
max
A
B
S Two-stage load-control valve and bypass check valve
are functionally combined in one coaxial valve assembly
S Leak-free load holding
S Pilot ratio 1:113
S The control assembly is guaranteed to close
→ it closes even with a broken spring
S Various pilot-pressure ranges can be chosen
S All exposed parts with zinc-nickel plating
S Various types of pilot control, matched to your system,
can be supplied
S Low-noise operation thanks to specially shaped control
grooves
In one valve, they combine the functions of load-holding,
safety and pipe-rupture protection. Leak-free load-control
valves in this series are ideally suited for use in high pres­
sure applications up to 420 bar (6000 psi) with a safety fac­
tor of at least 3.
With a variety of optional components, the range can be ex­
tended and adapted to the requirements of the system.
Variant L
Not influenced by return-line pressure
(drain line is required).
L
X
Reference: 300-P-9050099-EN-02
A
B
1/9

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Summary of Contents for Bucher Hydraulics NS 32

  • Page 1 Leak-Free Load-Control Valves NS 32 = 1000 l/min [265 gpm], p = 420 bar [6000 psi] Seat-valve, two-stage hydraulic, cartridge design Series CINDY 32-B-C... S Two-stage load-control valve and bypass check valve are functionally combined in one coaxial valve assembly...
  • Page 2: Technical Data

    Technical data General characteristics Description, value, unit Designation Leak-free load-control valve Design Seat-valve, two-stage hydraulic, cartridge design Size Nominal size 32 Mounting method Factory standards (1x Cylinder screw with internal hexagon DIN 912, M10 x 22 – strength category 12.9) Actuator / drive ports A, B, ∅...
  • Page 3: Construction And Function

    Construction and function The function of the control assembly is subdivided into the following positions: 4.1 Neutral position The load pressure and the compression spring act on the control spool in the closing direction. The valve is thus closed with no leakage.
  • Page 4 4.4 Types of pilot control Cover types / Type “G“ Type “D“ Type “K“ Type “H“ application Cylinder application ✓✓ ✓ (external pilot signal) Cylinder application (✓) ✓✓ (✓) (✓) (pilot signal from opposite line) Motors / Winches (✓) ✓✓ Motors for slewing ✓✓...
  • Page 5: Performance Graphs

    Performance graphs measured with oil viscosity 33 mm /s (cSt) Δp = f (Q) Pressure drop - Flow rate characteristic Δp = f (Q) Pressure drop - Flow rate characteristic Lifting (A → B) Lowering (B → A, valve fully opened) Δp [bar (psi)] Δp [bar (psi)] P0026.ai...
  • Page 6 6.1 Body and control versions Beispiel für die Masseinheit: Example for the dimension unit: 0.79 0.79 mm millimeter Deckel Typ / cover type “G“ [.010] 0.010 ˝ inch [1.22] [.354] Angriffsflächen zum Montieren und Demontieren Areas for assembling and disassembling Angriffsfläche zum Demontiere [0.43] Area for disassemblin...
  • Page 7 6.2 Cavity type SCHNITT A-A CUT A-A 149.5 ± 0.1 147 ± 0.1 107 ± 0.1 104.5 ± 0.1 ∅38 -0.2 bis min. ∅108 to min. ∅108 72 ± 0.2 0.05 A (2.5) (2.5) 16.5 ∅4 44 ± 0.1 Ra 1.6 Ra 1.6 Ra 1.6 Aufnahmebohrung...
  • Page 8: Safety Instructions

    Safety instructions 7.1 Assembly / disassembly IMPORTANT!: IMPORTANT!: The valve may only be used for its intended pur­ The port threads conform to DIN 3852 T1. pose within its nominal rating. If you plan to use it Use screws to DIN 912, grade 12.9, to mount the outside the nominal rating, you must contact the valve.
  • Page 9: Ordering Code

    Other control / cover versions on application. info.ch@bucherhydraulics.com www.bucherhydraulics.com E 2016 by Bucher Hydraulics AG, CH-6345 Neuheim All rights reserved. Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. The information does not relieve users from the duty of conducting their own evaluations and tests.

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