China high quality Nhf160 Hydraulic Safety Coupling with Flange

Product Description

NHF Hydraulic Safety Coupling With Flange

Description of NHF Hydraulic Safety Coupling With Flange
1.Simple and convenient assembly and disassembly;
2.No keyway and thrust ring are required on the shaft;
3.The stress on the entire contact surface is relatively uniform, and the stress concentration is not obvious;
4.When the vibration load of the shaft system changes, the shaft will not be worn;
5.The position of the coupling on the shaft is easy to ensure, and the connection accuracy is high;
6.Can be used repeatedly, with high interchangeability.

Dimensions of NHF Hydraulic Safety Coupling With Flange

 

d

D

L

L1

Df

Dc

R

t

n

ds

Mt

Mass

mm

mm

mm

mm

mm

mm

mm

mm

 

mm

kNm

kg

NHF100

100

170

215

40

265

230

9

21

8

19

26

26

NHF110

110

186

235

45

295

255

10

23

8

21

35

34

NHF120

120

202

250

50

315

275

11

25

8

23

46

42

NHF130

130

218

270

55

340

295

11

27

8

25

58

52

NHF140

140

234

290

60

355

310

12

29

10

24

72

64

NHF150

150

250

300

60

380

335

13

31

10

26

89

75

NHF160

160

266

320

65

405

355

14

33

10

28

108

91

NHF170

170

282

340

70

430

375

15

35

10

30

130

108

NHF180

180

298

355

75

440

390

15

37

12

29

154

124

NHF190

190

314

375

80

465

410

16

39

12

30

181

145

NHF200

200

330

390

80

490

435

17

41

12

32

211

167

NHF210

210

346

410

85

515

455

18

43

12

33

244

193

NHF220

220

362

425

90

535

475

19

45

12

35

281

219

NHF230

230

378

445

95

560

495

19

47

12

37

321

249

NHF240

240

394

465

100

580

515

20

49

12

38

365

282

NHF250

250

410

475

100

605

535

21

51

12

40

412

313

NHF260

260

426

495

105

630

560

22

53

12

42

464

352

NHF270

270

442

515

110

655

580

23

55

12

43

519

394

NHF280

280

458

530

115

675

600

23

57

12

45

579

434

NHF290

290

474

550

120

700

620

24

59

12

46

644

483

NHF300

300

490

565

120

720

640

25

61

12

48

713

528

NHF310

310

506

580

125

750

665

26

63

12

50

786

582

NHF320

320

522

600

130

770

685

27

65

12

51

865

638

NHF330

330

538

620

135

795

705

27

67

12

53

948

700

NHF340

340

554

635

140

815

725

28

69

12

54

1037

759

NHF350

350

570

650

140

840

745

29

71

12

56

1131

823

NHF360

360

586

670

145

835

750

30

73

16

50

1231

878

 

d

D

L

L1

Df

Dc

R

t

n

ds

Mt

Mass

mm

mm

mm

mm

mm

mm

mm

mm

 

mm

kNm

kg

NHF370

370

602

690

150

855

770

31

75

16

51

1337

951

NHF380

380

618

705

155

880

790

31

77

16

53

1448

1026

NHF390

390

634

725

160

900

810

32

79

16

54

1565

1108

NHF400

400

650

740

160

930

835

33

81

16

56

1689

1194

NHF410

410

666

755

165

950

855

34

83

16

57

1819

1277

NHF420

420

682

775

170

975

875

35

85

16

58

1955

1376

NHF430

430

698

795

175

995

895

35

87

16

60

2098

1474

NHF440

440

714

810

180

1571

915

36

89

16

61

2248

1574

NHF450

450

730

825

180

1040

935

37

91

16

63

2405

1674

NHF460

460

746

845

185

1060

955

38

93

16

64

2569

1787

NHF470

470

762

860

190

1085

975

39

95

16

65

2740

1900

NHF480

480

778

880

195

1105

995

39

97

16

67

2918

2571

NHF490

490

794

900

200

1130

1015

40

99

16

68

3105

2156

NHF500

500

810

910

200

1150

1035

41

101

16

70

3299

2267

NHF510

510

826

930

205

1175

1055

42

103

16

71

3501

2411

NHF520

520

842

950

210

1195

1075

43

105

16

72

3711

2554

NHF530

530

858

965

215

1220

1095

43

107

16

74

3929

2698

NHF540

540

874

985

220

1240

1115

44

109

16

75

4155

2852

NHF550

550

890

1000

220

1270

1140

45

111

16

77

4391

3014

NHF560

560

906

1571

225

1290

1160

46

113

16

78

4634

3180

NHF570

570

922

1035

230

1310

1180

47

115

16

79

4887

3338

NHF580

580

938

1055

235

1335

1200

47

117

16

81

5149

3524

NHF590

590

954

1075

240

1355

1220

48

119

16

82

5420

3708

NHF600

600

970

1085

240

1380

1240

49

121

16

84

5700

3877

NHF610

610

986

1105

245

1400

1260

50

123

16

85

5990

4072

NHF620

620

1002

1125

250

1425

1280

51

125

16

86

6289

4284

NHF630

630

1018

1140

255

1445

1300

51

127

16

88

6599

4477

NHF640

640

1034

1160

260

1465

1320

52

129

16

89

6918

4692

NHF650

650

1050

1175

260

1495

1345

53

131

16

91

7247

4917

NHF660

660

1066

1190

265

1515

1365

54

133

16

92

7587

5128

NHF670

670

1082

1210

270

1540

1385

55

135

16

93

7937

5375

NHF680

680

1098

1230

275

1560

1405

55

137

16

95

8298

5618

NHF690

690

1114

1245

280

1585

1425

56

139

16

96

8669

5860

NHF700

700

1130

1260

280

1605

1445

57

141

16

98

9052

6097

 

 

hydraulic coupling

What materials, such as steel or brass, are commonly used in manufacturing hydraulic couplings?

Hydraulic couplings are manufactured using a variety of materials, and the choice of material depends on the specific application requirements and the operating conditions of the hydraulic system. Some common materials used in manufacturing hydraulic couplings include:

  • Steel: Steel is one of the most widely used materials for hydraulic couplings due to its excellent strength, durability, and resistance to wear and corrosion. Carbon steel, stainless steel, and alloy steel are commonly used to manufacture hydraulic couplings for a wide range of applications.
  • Brass: Brass is another popular material for hydraulic couplings, especially in low-pressure and non-corrosive environments. Brass couplings offer good conductivity and are commonly used in fluid systems that require electrical grounding.
  • Aluminum: Aluminum couplings are lightweight and have good corrosion resistance. They are often used in applications where weight reduction is critical, such as aerospace and marine industries.
  • Cast Iron: Cast iron couplings provide high strength and durability, making them suitable for heavy-duty industrial applications with higher pressures and temperatures.
  • Stainless Steel: Stainless steel couplings are preferred for applications where resistance to corrosion and chemical exposure is essential. They are commonly used in the food and pharmaceutical industries.
  • Plastics: Some hydraulic couplings are made from various plastics, such as polypropylene or nylon. Plastic couplings are lightweight, corrosion-resistant, and suitable for low-pressure applications.
  • Bronze: Bronze couplings offer good corrosion resistance and are commonly used in marine and offshore applications.
  • Titanium: Titanium couplings are used in specialized applications where high strength and corrosion resistance are required, such as in the chemical and petrochemical industries.

Each material has its advantages and limitations, and the selection of the appropriate material depends on factors such as the operating pressure, temperature, chemical compatibility, weight requirements, and cost considerations of the specific hydraulic system.

Manufacturers of hydraulic couplings provide detailed specifications and material options for their products, enabling users to choose the most suitable coupling material for their application needs.

hydraulic coupling

What are the standard sizes and thread types available for hydraulic couplings?

Hydraulic couplings come in a variety of sizes and thread types to accommodate different hydraulic system requirements. The standard sizes and thread types are specified based on industry standards and regional norms. Here are some common standard sizes and thread types for hydraulic couplings:

  • Thread Types:
    • NPT (National Pipe Thread): NPT is a widely used thread type in North America. It has a tapered thread design and requires thread sealants like Teflon tape to ensure a leak-free connection.
    • BSP (British Standard Pipe): BSP is commonly used in Europe and many other parts of the world. It can have parallel (BSPP) or tapered (BSPT) threads and often requires thread sealants for a secure connection.
    • JIC (Joint Industry Council): JIC threads have a 37-degree flare angle and are prevalent in hydraulic systems. They provide a reliable metal-to-metal seal without the need for thread sealants.
    • SAE (Society of Automotive Engineers): SAE threads are commonly used in mobile hydraulic applications. They have a 45-degree flare angle and offer excellent sealing capabilities.
    • ORFS (O-Ring Face Seal): ORFS fittings feature a flat face with an O-ring seal. They are suitable for high-pressure applications and provide a reliable leak-free connection.
  • Standard Sizes:
    • Hydraulic couplings are available in various standard sizes, typically measured in inches or millimeters. Common sizes for hydraulic couplings include 1/4″, 3/8″, 1/2″, 3/4″, 1″, and 1 1/4″ for smaller couplings and up to larger sizes like 2″, 2 1/2″, and 3″ for heavy-duty industrial applications.
    • Metric sizes, such as 6 mm, 10 mm, 12 mm, 16 mm, and 20 mm, are also commonly used in hydraulic systems, especially in countries that follow the metric system.
    • Some specialized hydraulic systems may require custom sizes to meet specific application needs.

It’s important to note that while these thread types and sizes are commonly used, there may be other proprietary or industry-specific thread types and sizes depending on the manufacturer or application requirements. When selecting hydraulic couplings, it’s essential to ensure that the chosen couplings match the thread type and size of the corresponding components in the hydraulic system to ensure a proper and secure connection.

Hydraulic coupling manufacturers often provide detailed specifications and technical information about their products, including the available thread types and sizes, to help users select the right couplings for their specific hydraulic system needs.

hydraulic coupling

How do hydraulic couplings accommodate misalignment and prevent overload during operation?

Hydraulic couplings are designed to accommodate misalignment and prevent overload during operation, ensuring smooth and efficient power transmission. Here’s how they achieve this:

  1. Misalignment Accommodation: Hydraulic couplings can handle different types of misalignment between the driving and driven shafts. This includes angular misalignment, radial misalignment, and axial misalignment. The design of the coupling allows it to flex and compensate for these misalignments, reducing stress on the system components and preventing premature wear.
  2. Torsional Flexibility: Hydraulic couplings offer torsional flexibility, which means they can twist and absorb torsional vibrations that may occur during operation. This capability helps to dampen vibrations and reduce the impact of shock loads on the system, enhancing the overall performance and protecting sensitive components.
  3. Slip Mechanism: In applications where overload protection is critical, some hydraulic couplings feature a slip mechanism. When the torque exceeds a certain threshold, the coupling slips, disengaging the driving and driven elements. This slip mechanism prevents damage to the system and its components by acting as a safety feature under high-load conditions.
  4. Hydraulic Fluid Damping: The hydraulic fluid present in the coupling acts as a damping medium. When torque is transmitted from the driving element to the driven element, the fluid dampens the transmission of vibrations, providing a smoother and quieter operation while reducing wear and tear.
  5. Gradual Start-up: During system start-up, hydraulic couplings provide gradual power transmission. As the fluid flow builds up and pressure increases, the coupling gradually engages, minimizing the shock and stress on the system. This gradual start-up is particularly beneficial for systems with heavy loads and delicate components.
  6. Continuous Power Transmission: Hydraulic couplings maintain continuous power transmission even when there are slight misalignments or variations in operating conditions. The ability to accommodate misalignments and fluctuations in torque allows the system to operate reliably and efficiently over time.

By accommodating misalignments, damping vibrations, and providing overload protection, hydraulic couplings ensure the smooth and reliable operation of hydraulic systems. Their versatility and adaptability make them suitable for a wide range of industrial applications, where precision, efficiency, and protection against shock loads are essential requirements.

China high quality Nhf160 Hydraulic Safety Coupling with Flange  China high quality Nhf160 Hydraulic Safety Coupling with Flange
editor by CX 2023-12-12