Hydraulic Core Pin Cylinders DK Series - DADCO

?

Hydraulic Core Pin Cylinders

Catalog Number C00106B

DK Series

?40 mm

?55 mm

Hydraulic Core Pin Cylinders

DK Series

DADCO was founded in 1958 and today supplies a wide range of fluid power products for use in molds, dies, and automation equipment. With product ranging from the Micro Nitrogen Gas Spring Series to air/oil accumulators, DADCO provides customers with quality products of unmatched performance.

DADCO's innovative Hydraulic Core Pin Cylinder was developed specifically for use in plastic injection molds. Its compact, one-piece round body and rear porting capability make it the ideal replacement for bulky, square head, tie-rod style cylinders. The one piece body also eliminates the need to seal between multiple body parts, therefore decreasing the potential for leaks.

Sealing Features

DADCO's Core Pin Cylinder is constructed with long-lasting, high temperature seals, as standard. Consequently, the Core Pin Cylinder can typically withstand the high temperatures inside plastic molds. As an option, seals are available that provide for zero fluid bypass while standing up to operating pressures as high as 220 bar (3000 psi).

Porting Options

The DADCO Hydraulic Core Pin Cylinder offers numerous porting advantages. Convenient rear porting eliminates the need to provide additional space for piping to the front of the cylinder. However, side ports are also supplied on every cylinder. Every port is sealed with a hightemperature, flourocarbon elastomer (FPM/FKM) seal to assure zero leakage. Two straight port adapters are supplied as standard with each cylinder.

DK Cylinder with rear porting

?40 mm

?55 mm

Models

DADCO's Core Pin Cylinder is optionally available in a nonrotating model for use in applications where the rod alone controls the core pin orientation. The non-rotating model is available in both 13 and 25 mm (Nom. 0.5 and 1") stroke lengths. DADCO's Core Pin Cylinder may also be supplied with a double rod end. The body length of the double rod end cylinder is the same as the standard model. Contact DADCO for information on special cylinders.

DK Series cylinders can be custom designed.

Quality Construction

The Core Pin Cylinder's one-piece steel body is machined to close tolerances and corrosion protected. The hard chrome plated piston rod has wrench flats for easy core pin connection. Standard stroke lengths are 13, 25, 50, 80, and 100 mm. (Nom. 0.5?, 1?, 2?, 3?, 4?). Various male and female rod end styles are available.

Convenient Mounting

Unlike square head cylinders, DADCO's compact Core Pin

Cylinder can be easily inserted into cored pockets within

the mold. Simple two bolt mounting through the full

body length of the cylinder facilitates fast installation. An

attachable front flange mount is also available for the

?40 mm bore size for greater mounting versatility.

2

734.207.1100 ? 800.DADCO.USA ? f a x 734.207.2222 ?

Application Examples

Hydraulic Core Pin Cylinders

Optional Cylinder Styles

DADCO's Hydraulic Core Pin Cylinder is used to extract the core pin from the formed workpiece. In this application, the double rod end cylinder is used with an adjustable limit switch to achieve the desired cylinder travel within the mold.

Double Rod End Core Pin Cylinder

Limit Switch

Core Pin

Versatile Mounting

In this application, DADCO's ?40 mm Hydraulic Core Pin Cylinder is mounted outside of the mold with an attachable front flange mount. Four mounting bolts are used to secure the cylinder to the mold. The compact cylinder also can be installed easily in cored pockets within the mold, as shown above. Installation is fast and simple with two mounting bolts through the full body length of the cylinder.

Core Pin Cylinder with Attachable Flange Mount

Core Pin

734.207.1100 ? 800.DADCO.USA ? f a x 734.207.2222 ?

3

Hydraulic Core Pin Cylinders

?40 mm Core Pin Cylinder

Standard or Non-Rotating Cylinder 20

.79

32

3

1.26 .12

STROKE

*13 .51

*25 .98

50 1.97

80 3.15

100 3.94

BODY

30.7

1.21

125

4.92

125 4.92

150 5.91

180 7.09

200

37.8

7.87

1.49

1/2-20 ? Rod End Style 1

M12x1.25 ? Rod End Style 2

Rod End Style 3

13

18

.51 ACROSS FLATS .72

?16

8

.63

.31

M10x1.25

?16 .63

R 2.5 R .10

Female Rod End

G1/8 (2) PL. SIDE

?75

(2) GV-120 SERVICE

2.95

FITTINGS

57.1

Note: Two GV-120 service fittings are installed in

2.25

the rear ports of each cylinder. Other fittings are also

available. See page 9.

M10 SHCS

55

3/8 SHCS

2.17

G1/8 (2) PL. REAR

Force (daN) Force (lb.)

2800

2600 2400 2200 2000 1800 1600 1400 1200 1000

800 600 400 200

0 20 40

Pull Force (daN)

Push force is pull force x 1.20

60 80 100 120 140 160 180 200 220

Hydraulic Pressure (bar)

6000 5500 5000 4500 4000 3500 3000 2500 2000 1500 1000

500 0 250 500

Pull Force (lb.)

Push force is pull force x 1.20

750 1000 1250 1500 1750 2000 2250 2500 2750 3000

Hydraulic Pressure (psi)

Ordering Information:

Model

DK-Basic, DKN- Non-Rotating Rod

Bore Stroke

DK?13, 25, 50, 80, 100 mm *DKN?13 and 25 mm only

DK.40.25.1

Rod End Style

1 - 1/2-20 Male Rod End

2 - M12 x 1.25 Male Rod End

3 - Female Rod End (M10 x 1.25)

4

734.207.1100 ? 800.DADCO.USA ? f a x 734.207.2222 ?

?40 mm Double Rod End Cylinder

Hydraulic Core Pin Cylinders

STROKE

13 .51

25 .98

50 1.97

80 3.15

100 3.94

20 .79

32

3

1.26

.12

BODY 30.7

1.21

125

4.92

125 4.92

150 5.91

180 7.09

200 37.8

7.87

1.49

1/2-20 ? Rod End Style M12x1.25 ? Rod End Style 2

13 .51 ACROSS FLATS

Rod End Style 3 18

.72

?16 .63

8 .31

M10x1.25

?16 .63

R 2.5 R .10

Female Rod End

G1/8 (2) PL. SIDE

32 + STROKE 1.26 + STROKE

?75 2.95 57.1 2.25

(2) GV-120 SERVICE FITTINGS

Note: Two GV-120 service fittings are installed in the rear ports of each cylinder. Other fittings are also available. See page 9.

55 2.17

M10 SHCS 3/8 SHCS G1/8 (2) PL. REAR

Note: Force charts can be found on page 4. For the DKD cylinder, the push force equals the pull force.

Ordering Information: Model

DKD- Double Rod End

Bore

Stroke

13, 25, 50, 80, 100 mm

DKD.40.25.1. 1

Rear Rod End Style

1 - 1/2-20 Male Rod End 2 - M12 x 1.25 Male Rod End 3 - Female Rod End (M10 x 1.25)

Front Rod End Style

1 - 1/2-20 Male Rod End 2 - M12 x 1.25 Male Rod End 3 - Female Rod End (M10 x 1.25)

734.207.1100 ? 800.DADCO.USA ? f a x 734.207.2222 ?

5

Hydraulic Core Pin Cylinders

?55 mm Core Pin Cylinder

Standard or Non-Rotating Cylinder 25

.98

40

3

1.57 .12

STROKE

BODY

33.5

1.32

*13

125

.51

4.92

*25

125

.98

4.92

50

150

1.97

5.91

80

180

3.15

7.09

31

100

200

1.22

3.94

7.87

3/4-16 - Rod End Style 1 M20x1.5 - Rod End Style 2

21 .82 ACROSS FLATS

Rod End Style 3 18

.72

? 25

.98

M16 x 1.5

? 25 .98

Female Rod End

G 1/4 (2) PL. SIDE

Force (daN) Force (lb.)

? 100 3.94 79.4 3.13

(2) GV-140 SERVICE FITTINGS

Note: Two GV- 140 service fittings are installed in the rear ports of each cylinder. Other fittings are also available. See page 9.

M14 SHCS

71

1/2 SHCS

2.79

G 1/4 (2) PL. REAR

4300 4000 3700 3400 3100 2800 2500 2200 1800 1500 1200

900 600 300

0 20 40

Pull Force (daN)

Push force is pull force x 1.26

60 80 100 120 140 160 180 200 220

Hydraulic Pressure (bar)

9000 8250 7500 6750 6000 5250 4500 4050 3300 2550 1800 1050

0 250 500

Ordering Information:

Model

DK-Basic, DKN- Non-Rotating Rod

Bore

DK.55.25.1

Stroke

DK?13, 25, 50, 80, 100 mm

*DKN?13 and 25 mm only

Pull Force (lb.)

Push force is pull force x 1.26

750 1000 1250 1500 1750 2000 2250 2500 2750 3000

Hydraulic Pressure (psi)

Rod End Style

1 - 3/4-16 Male Rod End 2 - M20 x 1.5 Male Rod End 3 - Female Rod End (M16 x 1.5)

6

734.207.1100 ? 800.DADCO.USA ? f a x 734.207.2222 ?

?55 mm Double Rod End Cylinder

Hydraulic Core Pin Cylinders

25 .98

40

3

1.57 .12

STROKE

13 .51

25 .98

50 1.97

80 3.15

100 3.94

BODY 33.5

1.32

125

4.92

125 4.92

150 5.91

180 7.09

200 31

7.87

1.22

40 + STROKE 1.57 + STROKE

3/4-16 - Rod End Style 1 M20 x 1.5 - Rod End Style 2

21

Rod End Style 3

.82 ACROSS FLATS 18

.72

? 25 .98

M16 x 1.5

?25 .98

Female Rod End

G 1/4 (2) PL. SIDE

(2) GV-140 SERVICE FITTINGS

? 100 3.94

79.4 3.13

Note: Two GV-140 service fittings are installed in the rear ports of each cylinder. Other fittings are also available. See page 9.

71 2.79

M14 SHCS 1/2 SHCS

G 1/4 (2) PL. REAR

Note: Force charts can be found on page 6. For the DKD cylinder, the push force equals the pull force.

Ordering Information:

DKD.55.25.1. 1

Model

DKD- Double Rod End

Bore

Rear Rod End Style

1 - 3/4-16 Male Rod End

2 - M20 x 1.5 Male Rod End

3 - Female Rod End (M16 x 1.5)

Stroke

13, 25, 50, 80, 100 mm

Front Rod End Style

1 - 3/4-16 Male Rod End 2 - M20 x 1.5 Male Rod End 3 - Female Rod End (M16 x 1.5)

734.207.1100 ? 800.DADCO.USA ? f a x 734.207.2222 ?

7

Hydraulic Core Pin Cylinders

?40 mm Mount Option

Attachable Front Flange Mount

DK40-RF

An attachable front flange mount is available for use with the DADCO 40 mm bore size DK Hydraulic Core Pin Cylinder for increased mounting options. The flange mount allows for fast, easy mounting and is especially useful for securing the Core Pin Cylinder outside the mold.

16

48

.63

1.89

WIRE RING INSTALLED IN CYLINDER GROOVE

TWO PIECE FLANGE BOLTED TOGETHER

?104 BOLT CIRCLE 4.09

?11 (4) PL.

M6 THD. (2) PL.

?122 73.5 4.80 2.89

8

734.207.1100 ? 800.DADCO.USA ? f a x 734.207.2222 ?

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