Products > OSAKA JACK > New Products > O.J Power(Hydraulic jack Hydraulic pump) > EC type Hollow Jack S (Spring return type) type Flat jack S  
     

EC type Hollow Jack S (Spring return type)

Features : 

72MPa(720kgf/cm2) 

EC type Hollow Jack S (Spring return type)

1.Load test is 100% of lifting capacity, lateral load is 1/20 of lifting capacity.
2.Sliding part of piston is made of copper alloy padding and piston rod is made of hard chromium plating.
3.Cylinder and piston are strong materials heat treated with SCM435.
4.Thread of coupler screw is of NPT3/8.
5.Valve to prevent load falling is recommended just in case of damage of hose or piping(option item)

 


Item

Capacity

Stroke

Closed height

Outer dia.

Dia. of center hole

Weight approx.

Model 

kN(ton)

mm

mm

mm

mm

kg

EC12S4

120(12)

40

142

Max.75(70)

20

4

EC12S7.5

120(12)

75

195

Max.75(70)

20

5

EC20S5

200(20)

50

173

100

28.5

9

EC20S15

200(20)

150

335

100

28.5

15

EC30S6

300(30)

60

193

114

33

12

EC30S15

300(30)

150

343

114

33

21

EC50S7

500(50)

70

242

150

42

25

EC60S15

600(60)

150

335

163

55

38

EC90S7.5

900(90)

75

280

214

80

55


 

EC type Hollow Jack H (Hydraulic return type)

72MPa(720kgf/cm2) 

EC type Hollow Jack H (Hydraulic return type)

1.Designed for comapct size, light weight and easy-handling.
2.The hollow going through the rod is used for tensioning such as wire, strand, bolt, rod etc.
3.If Head cap is attached, jack is used as normal one.
4.Sliding part of piston is of copper alloy braze welding and piston rod is welded with hard chrome.
5.Load test is 100% of lifting capacity, lateral load is 1/20 of lifting capacity.
6.Material of cylinder and piston is SCM435, heat-treated and reinforrced.
7.Select hydraulic pump according to connecting qty of jacks and following usable oil capacity.
8.Safety valve which does not make return circuit of jack blockade is supplied as option.

 


Item

Capacity

Stroke

Closed height

Outer dia.

Dia. of center hole

Weight approx.

Model 

kN(ton)

mm

mm

mm

mm

kg

EC30H15

300(30)

150

310

114

33

19

EC30H20 ※

300(30)

200

360

115

33

23

EC30H25

300(30)

250

415

114

33

25

EC50H25 ※

500(50)

250

460

150

42

50

EC60H25

600(60)

250

452

163

55

55

EC90H25

900(90)

250

465

193

55

82

EC100H4

1000(100)

40

190

200

55

38

EC100H15 ※

1000(100)

150

345

200

55

70

EC100H30 ※

1000(100)

300

515

200

55

100

EC140H20

1400(140)

200

383

253

80

115

EC200H15 ※

2000(200)

150

390

270

75

145

EC200H35 ※

2000(200)

350

600

270

75

210

 
 
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