Enerpac CYDA User Manual

Repair Parts Sheets for this product are available from the Enerpac
web site at www.enerpac.com, or from your nearest Authorized
Enerpac Service Center or Enerpac Sales office.

1.0 IMPORTANT RECEIVING INSTRUCTIONS

Visually inspect all components for shipping damage. Shipping
damage is not covered by warranty. If shipping damage is found,
notify carrier at once. The carrier is responsible for all repair and
replacement costs resulting from damage in shipment.

SAFETY FIRST

2.0 SAFETY ISSUES

Read all instructions, warnings and cautions
carefully. Follow all safety precautions to avoid

personal injury or property damage during system
operation. Enerpac cannot be responsible for damage or injury
resulting from unsafe product use, lack of maintenance or incorrect
product and/or system operation. Contact Enerpac when in doubt as
to the safety precautions and operations. If you have never been
trained on high-pressure hydraulic safety, consult your distribution or
service center for a free Enerpac Hydraulic safety course.

Failure to comply with the following cautions and warnings could
cause equipment damage and personal injury.

A CAUTION is used to indicate correct operating or maintenance
procedures and practices to prevent damage to, or destruction of
equipment or other property.

A WARNING indicates a potential danger that requires correct
procedures or practices to avoid personal injury.

A DANGER is only used when your action or lack of action may
cause serious injury or even death.

WARNING: Wear proper personal protective gear when
operating hydraulic equipment.

WARNING: Stay clear of loads supported by
hydraulics. A cylinder, when used as a load lifting device,

should never be used as a load holding device. After the
load has been raised or lowered, it must always be blocked
mechanically.

WARNING: USE ONLY RIGID PIECES TO HOLD LOADS.

Carefully select steel or wood blocks that are capable of

supporting the load. Never use a hydraulic cylinder as a
shim or spacer in any lifting or pressing application.

DANGER: To avoid personal injury keep hands and
feet away from cylinder and workpiece during
operation.

WARNING: Do not exceed equipment ratings. Never

attempt to lift a load weighing more than the capacity of

the cylinder. Overloading causes equipment failure and
possible personal injury. The cylinders are designed for a max.
pressure of 700 bar [10,000 psi]. Do not connect a jack or cylinder
to a pump with a higher pressure rating.

Never set the relief valve to a higher pressure than the

maximum rated pressure of the pump. Higher settings

may result in equipment damage and/or personal injury.

WARNING: The system operating pressure must not
exceed the pressure rating of the lowest rated component

in the system. Install pressure gauges in the system to
monitor operating pressure. It is your window to what is
happening in the system.

CAUTION: Avoid damaging hydraulic hose. Avoid sharp

bends and kinks when routing hydraulic hoses. Using a

bent or kinked hose will cause severe back-pressure.
Sharp bends and kinks will internally damage the hose leading to
premature hose failure.

Do not drop heavy objects on hose. A sharp impact
may cause internal damage to hose wire strands.
Applying pressure to a damaged hose may cause it to

rupture.

IMPORTANT: Do not lift hydraulic equipment by the

hoses or swivel couplers. Use the carrying handle or

other means of safe transport.

CAUTION: Keep hydraulic equipment away from
flames and heat. Excessive heat will soften packings

and seals, resulting in fluid leaks. Heat also weakens
hose materials and packings. For optimum performance do not
expose equipment to temperatures of 65°C [150°F] or higher.
Protect hoses and cylinders from weld spatter.

DANGER: Do not handle pressurized hoses. Escaping
oil under pressure can penetrate the skin, causing serious
injury. If oil is injected under the skin, see a doctor

immediately.

WARNING: Only use hydraulic cylinders in a coupled
system. Never use a cylinder with unconnected couplers.

If the cylinder becomes extremely overloaded,
components can fail catastrophically causing severe personal
injury.

WARNING: BE SURE SETUP IS STABLE BEFORE

LIFTING LOAD. Cylinders should be placed on a flat

surface that can support the load. Where applicable, use a

Instruction Sheet

CYDA-15

Double-Acting Cylinder

L0038 Rev. O

®

®

®

®

®

cylinder base for added stability. Do not weld or otherwise modify
the cylinder to attach a base or other support.

Avoid situations where loads are not directly centered on
the cylinder plunger. Off-center loads produce

considerable strain on cylinders and plungers. In
addition, the load may slip or fall, causing potentially dangerous
results.

Distribute the load evenly across the entire saddle
surface. Always use a saddle to protect the plunger.

IMPORTANT: Hydraulic equipment must only be serviced

by a qualified hydraulic technician. For repair service,

contact the Authorized ENERPAC Service Center in your
area. To protect your warranty, use only ENERPAC oil.

WARNING: Immediately replace worn or damaged parts

by genuine ENERPAC parts. Standard grade parts will

break causing personal injury and property damage.
ENERPAC parts are designed to fit properly and withstand high
loads.

1.0 FEATURES

1.1 At 3000 psi hydraulic pressure CYDA-15 will

provide clamping force (push) of 1230 lbs.
Retracing force (pull) at same pressure is 600
lbs.

1.2 CYDA-15 has a maximum stroke of 1.5 inches.

1.3 CYDA-15 can be operated by air or hydraulic

pressure. Air pressure shall not exceed 200 psi,
hydraulic pressure shall not exceed 3000 psi.

1.4 All pressure ports are located at one end (base).

The base can be removed and multiple cylinders
can be attached to a common manifold. See
Figure 2.

1.5 Many mounting brackets and accessories are

available for CYDA-15. Refer to Enerpac
Workholding Catalog.

2.0 INSPECTION

Upon removal from the shipping container, the unit
should be visually inspected for any shipping
damage.

3.0 INSTALLATION

3.1 Remove and discard all protective plastic caps. The unit can
be mounted on suitable Enerpac mounting brackets with other
Enerpac accessories. Mount unit on bracket.

CAUTION: DO NOT USE ALUMINUM BASE AS A
MOUNTING SURFACE.

3.3 Set operating pressure from 100-500 psi. Cycle the unit a few
times until all air is bled out from the connectors. Then tighten
connectors to prevent leakage. Reset hydraulic pressure to
normal operating setting.

4.0 PERIODIC INSPECTION AND MAINTENANCE

The CYDA-15 require maintenance only when wear or leakage is
noticed. Repair as required. Maintenance Kit CYDA-15K contains
seals and instructions for repair of this unit. Overhaul maintenance,
in most cases can be performed by the user and good results.
Occasional visual inspection should be performed to detect any
problem which would necessitate overhaul maintenance.

www.enerpac.com

CYDA-15
Without Base

MANIFOLD MACHINING INSTRUCTIONS FOR USE

WITHOUT SQUARE BASE

.910
.928

.259

.259 R Ref

Dia.

.775
.790

1.00

1"- 12 UNF-2B
Thread

.12 X 1.02 Dia.
Th’d Relief

.09 Dia. Typ.

32

32

.75 Min.

Hyd. Manifold

45°

.875
.877

Dia.

.19

Cham. 45° X

1.02 Dia.

Figure 1

Figure 2

.63

Advance Port

.20

.125-27 NPT

1.0 - 12 UNF
.312-24, .50 DP

.50

1.50

Retract Port

1.25

.88

.38

1.00

1.75

4.41

5.97

.31