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FLOW CONTROL

LEDEEN™ SY SeriesPneumatic & Hydraulic Actuators

SY Series

MODULAR ASSEMBLY

Consistent engineering design and efficient

modular assembly allows maximum operational

flexibility to be achieved. Double acting, spring

fail close/open or manual override operations

are combinations that are readily obtainable

on the pneumatic and hydraulic products.

TYPICAL APPLICATION

For on/off or modulating control of any

quarter-turn operated valve.

Quarter-Turn Hydraulic

Quarter-Turn Pneumatic

Frame

Pneumatic Cylinder

Spring Cartridge

Hydraulic Cylinder

2

Symmetric Yoke Canted Yoke

FLOW CONTROL

Pneumatic Spring Return

Hydraulic Spring Return

STANDARD FEATURES

• All models available as double acting or spring return

• Torque outputs to 3,600,000 in-lbs (400,000 Nm)

• Open and close travel stops provide ±3˚ min.

• Scotch yoke mechanism generates powerful opening

and closing torque outputs

• Steel fabricated frame provides rugged foundation

of modular assemblies

• Chrome-plated side load bar with guide block for

effective elimination of piston rod deflection

• Bronze bushing interfaces provide low-friction support

of sliding and rotating components

• Aluminum bronze sliding blocks for a low-friction,

low-stress pin connection

• Steel cylinder assembly provides robust pressure

containment for all conditions

• Nickel-plated cylinder I.D. ensures excellent sealing

surface with superior corrosion resistance

• Buna piston seal configurations specifically designed

for pneumatic and hydraulic applications

• Composite guide band on piston provides low-friction

guidance and support

• Steel spring cartridge is fully enclosed from

environmental conditions

• Epoxy-coated prestressed springs provide consistent

performance with corrosion protection

• Seal-welded design construction provides maximum

personnel safety

3

STANDARD PRODUCT CHARACTERISTICS

TYPE TEMPERATURE PRESSURE

Pneumatic-22 °F to 212 °F

(-30 °C to 100 °C)

40 to 175 psig(3 to 12 barg)

Hydraulic145 to 3000 psig(10 to 202 barg)

Pneumatic Actuator Standard Construction

4

ITEM DESCRIPTION MATERIAL

1

2

3

4

5

6

7

8

9

10

12

13

11

14

15

16

17

Travel Stop Alloy Steel

Guide Bar Alloy Steel/Chrome Plated

Pin Alloy Steel

Guide Block Carbon Steel

Sliding Block Aluminum Bronze

Cylinder Carbon Steel

Tie Rod Alloy Steel

Flange Carbon Steel

Guide Band Teflon and Graphite

Seal Buna O-Ring

Piston Carbon Steel

Piston Rod Alloy Steel

Scotch Yoke Alloy Steel

Bushing Bronze

Frame Carbon Steel

Spring Cartridge Carbon Steel

Spring Alloy Steel

Double Acting Pneumatic Actuator

2

1

15

3 45 6 7

8

1

14 13

Spring Return Pneumatic Actuator

16 17

1112 10

9

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Hydraulic Actuator Standard Construction

5

ITEM DESCRIPTION MATERIAL

Travel Stop Alloy Steel

Guide Bar Alloy Steel/Chrome Plated

Pin Alloy Steel

Guide Block Carbon Steel

Sliding Block Aluminum Bronze

Cylinder Carbon Steel

Tie Rod Alloy Steel

Flange Carbon Steel

Guide Band Teflon and Graphite

Seal Buna Quad-Ring

Piston Carbon Steel

Piston Rod Alloy Steel

Scotch Yoke Alloy Steel

Bushing Bronze

Frame Carbon Steel

Spring Cartridge Carbon Steel

Spring Alloy Steel

Double Acting Hydraulic Actuator

Spring Return Hydraulic Actuator

78

1

16 17

1112 10

9

6

2

1

15

3 45

14 13

1

2

3

4

5

6

7

8

9

10

12

13

11

14

15

16

17

SY SeriesSTANDARD OPTIONS

• Jackscrew override

• Hand pump override

• Fluorosilicone seals for low temperature

applications to -76 ˚F (-60 ˚C)

• Viton® seals for high temperature

applications to 392 ˚F (200 ˚C)Pneumatic Spring Return with Jackscrew Override

Pneumatic Double Acting with Jackscrew Override

Pneumatic Double Acting with Hand Pump Override

CERTIFICATIONS

Cameron’s SY series of actuators comply

with many industry standards.

• ISO 9001:2000, Quality

• PED 97/23/EC, Design

• SI 825, Safety

• IEC 61508:2000, Integrity (TUV/SIL3)

6

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MODEL NUMBER DESIGNATION

Cameron offers customizable actuators—from

the frame type to the override options. A sample

of the actuator selection process is shown below.

Starting with step 1, Frame Type, the compo-

nents of the actuator needed to fit the customer’s

requirements is built. An example model number

is shown below which specifically identifies each

variable for selection.

TECHNICAL DATA

For additional technical data such as torque

charts, dimensional drawings, etc., refer to the

SY Series Actuators technical data package.

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Technical Data

SY Series

Description

Cameron customizes actuators to meet customer needs.

The SY series of quarter-turn actuators are offered as

hydraulic and pneumatic, double-acting and spring return.

SY Pneumatic

& Hydraulic Actuators

7

SY 16 48 S C 2 HP

7

A

1

2

5

6

7

8

9

1 2 3 5 7 86 9

P

4

4

3

MANUAL OVERRIDE OPTION (if required)HP: Hand PumpJS: Jackscrew

SPRING CARTRIDGE SIZE(only for spring return models)1–5

FAIL POSITION(only for spring return models)C: ClosedO: Open

ACTUATOR TYPE(only for spring return models)S: Spring Return

POWER CYLINDER SIZEPneumatic: 28–120Hydraulic: 04–28

FRAME TYPESY

FRAME SIZE8–32

PRODUCT TYPEP: PneumaticH: Hydraulic

YOKE TYPEA: CantedS: Symmetric

FLOW CONTROL11331 Tanner RoadHouston, Texas 77041USATel 1-713-280-3000Fax 1-713-280-3056

4903-B W Sam Houston Pkwy NHouston, Texas 77041USATel 1-281-809-1900Toll Free 1-866-447-209624/7 Aftermarket 1-281-382-2407Fax 1-281-809-1851

5120 67th AvenueEdmonton, Alberta T6B 3N9CanadaTel 1-780-426-8700Fax 1-780-426-8720

Factory Building 1No. 1388 South Longgong RoadChengdu Longquan Economic Development ZoneChengdu, 610100ChinaTel 86-28-8843-1751Fax 86-28-8843-1027

Via Gandini 427058 Voghera, PVItalyTel 39-0383-343311Fax 39-0383-62289

DRILLING & PRODUCTION SYSTEMSPO Box 1212Houston, Texas 77251-1212USATel 1-713-939-2211

Visit us at:www.c-a-m.com /flowcontrol

HSE Policy StatementAt Cameron, we are committed ethically, financially and personally to a working environment where no one gets hurt, nothing gets harmed.

© 2009 Cameron | Viton is a registered trademark of E.I. du Pont de Nemours and Company. | LEDEEN is a trademark of Cameron International Corporation. | Printed in USA, SWP, 2M | 01/09, TC9674

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