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Marine Four-point Contact Ball Bearing

About product

The Marine Single Row Four Point Contact Ball Bearing is a specialized slewing bearing commonly used in marine applications. It consists of two seat rings and boasts a compact structure and light weight. The key feature is the four-point contact between the steel balls and the arc raceway. This design allows the slew bearing to withstand axial force, radial force, and overturning moments simultaneously.

  • Non-Gear Type
  • External Gear Type
  • Internal Gear Type

Additional information

Outer Diameter

602mm~4726mm

Ball Diameter

30mm~75mm

Main Material

42CrMo, 50Mn, C45

Rated Load

129KN~3410KN

Weight/Kg

75.8-4000

Load Ratings (Coa 10^4 N)

129-3410

Product Detail

Marine Slewing Bearing – Four-point Contact Ball Bearing

This slew bearing is well-suited for various construction machinery, including rotary conveyors, welding manipulators, small and medium-sized cranes, and excavators. Its robust construction enables it to handle the demanding operational requirements of these machines.

Types Of Marine Four-point Contact Ball Bearing

The Marine Four Point Contact Ball Bearing is available in three distinct structures to accommodate different application needs.

  • Non-Gear Type: This structure is ideal when external gear engagement is not required. It provides a compact and efficient solution for applications where the slewing bearing itself does not need to drive or be driven by external gears.
  • External Gear Type: Designed with external teeth on the outer ring, this structure enables the bearing to engage with an external gear. It allows for smooth rotation and power transmission between the bearing and the gear, making it suitable for gear-driven systems.
  • Internal Gear Type: Featuring internal teeth on the inner ring, this structure allows for the bearing to mesh with an internal gear. It facilitates controlled rotation and torque transfer within the bearing assembly, making it advantageous for applications where compactness and enclosed gear engagement are desired.

The Structure Of Marine Four-point Contact Ball Bearing

The four-point contact ball bearings consist of several essential components that enable their reliable performance and versatility in various applications:

  • Inner Ring: The inner ring provides support and a mounting surface for the bearing assembly. It plays a crucial role in maintaining proper alignment and facilitating smooth rotation.
  • Outer Ring: Surrounding the inner ring, the outer ring provides stability and acts as the outer boundary of the bearing. It also serves as a mounting surface and contributes to load distribution.
  • Seal: Slewing bearings employ sealing mechanisms to prevent grease leakage and protect the bearing from contaminants such as dust, impurities, and moisture. This sealing ensures optimal functioning and extends the bearing’s lifespan.
  • Spacer: Spacers are used to maintain the precise spacing between the inner and outer rings. They contribute to the overall stability and alignment of the bearing, enabling efficient load distribution and smooth rotation.
  • Ball/Roller: The rolling elements, either balls or rollers, reduce friction and facilitate smooth rotation within the slew bearing. They distribute the load evenly across the bearing surfaces, ensuring efficient force transmission.

Parameter Of Four-point Contact Ball Bearing

No Gear Type Four Point Contact Slewing Bearing

Ungeared

Boundary Dimensions/mm

Bolt Hole Diameter/mm

Structure Dimensions/mm

Basic Load Ratings (Coa 10^4 N)

Weight/Kg

#rowspan#

D

d

H

D1

D2

n

φ

D3

d1

H1

h

n3

φ3

#rowspan#

#rowspan#

010 • 30 • 500 • **

602

398

80

566

434

20

18

498.5

501.5

70

10

4

M10*1

129

75.8

010 • 40 • 800 • **

922

678

100

878

722

30

22

798.5

801.5

90

10

6

M10*1

313

256

010 • 45 • 1250 • **

1390

1110

110

1337

1163

40

26

1248

1252

100

10

6

M10*1

554

420

010 • 45 • 1600 • **

1740

1460

110

1687

1513

45

26

1598

1602

100

10

8

M10*1

702

550

010 • 60 • 2000 • **

2178

1825

144

2110

1891

48

33

1998

2002

132

12

8

M10*1

1210

1100

010 • 60 • 2500 • **

2678

2325

144

2610

2391

56

33

2498

2503

132

12

8

M10*1

1500

1400

010 • 60 • 2800 • **

2978

2625

144

2910

2691

56

33

2798

2803

132

12

8

M10*1

1680

1600

010 • 75 • 3150 • **

3376

2922

174

3286

3014

56

45

3148

3153

162

12

8

M10*1

2380

2800

010 • 75 • 4500 • **

4726

4272

174

4636

4364

60

45

4498

4503

162

12

10

M10*1

3410

4000

External Gear Type Four Point Contact Ball Bearing

External Gear

Dimensions/mm

Bolt Hole Diameter/mm

Structure Dimensions/mm

Gear Parameters/mm

Bassic Load Rating (Coa 10^4N)

Weight/kg

#rowspan#

D

d

H

D1

D2

n

φ

D3

d1

H1

h

n3

φ3

m

Da

Z

b

x

#rowspan#

#rowspan#

011 • 30 • 500 • **

602

398

80

566

434

20

18

498.5

501.5

70

10

4

M10*1

5

630

123

60

0.5

129

75.8

011 • 30 • 710 • **

812

608

80

776

644

24

18

708.5

711.5

70

10

4

M10*1

6

852

139

60

0.5

212

120

012 • 30 • 630 • **

732

528

80

696

564

24

18

628.5

631.5

70

10

4

M10*1

8

776

94

60

0.5

187

110

011 • 40 • 800 • **

922

678

100

878

722

30

22

798.5

801.5

90

10

6

M10*1

8

968

118

80

0.5

313

256

012 • 40 • 900 • **

1022

778

100

978

822

30

22

898.5

901.5

90

10

6

M10*1

10

1070

104

80

0.5

355

240

011 • 45 • 1250 • **

1390

1110

110

1337

1163

40

26

1248

1252

100

10

6

M10*1

12

1452

118

90

0.5

554

420

012 • 45 • 1400 • **

1540

1260

110

1487

1313

40

26

1398

1402

100

10

6

M10*1

14

1610

112

90

0.5

617

480

011 • 45 • 1800 • **

1940

1660

110

1887

1713

45

26

1798

1802

100

10

8

M10*1

14

2016

141

90

0.5

793

610

012 • 60 • 2800 • **

2978

2625

144

2910

2691

56

33

2798

2803

132

12

8

M10*1

20

3080

151

120

0.5

1680

1600

012 • 75 • 3550 • **

3776

3322

174

3686

3414

56

45

3548

3553

162

12

8

M10*1

22

3894

174

150

0.5

2690

3200

012 • 75 • 4500 • **

4726

4272

174

4636

4364

60

45

4498

4503

162

12

10

M10*1

25

4850

191

150

0.5

3410

4000

Internal Gear Type Four Point Contact Ball Bearing

Internal Gear

Boundary Dimensions/mm

Bolt Hole Diameter/mm

Structure Dimensions/mm

Gear Parameters/mm

Basic Load Ratings(Coa 10^4N)

Weight/Kg

#rowspan#

D

d

H

D1

D2

n

φ

D3

d1

H1

h

n3

φ3

m

Da

Z

b

x

#rowspan#

#rowspan#

013 • 30 • 500 • **

602

398

80

566

434

20

18

498.5

501.5

70

10

4

M10*1

5

365

74

60

0.5

129

75.8

014 • 30 • 500 • **

602

398

80

566

434

20

18

498.5

501.5

70

10

4

M10*1

6

366

62

60

0.5

129

75.8

013 • 40 • 800 • **

922

678

100

878

722

30

22

798.5

801.5

90

10

6

M10*1

8

632

80

80

0.5

313

256

014 • 40 • 800 • **

922

678

100

878

722

30

22

798.5

801.5

90

10

6

M10*1

10

630

64

80

0.5

313

256

013 • 40 • 1120 • **

1242

998

100

1198

1042

36

22

1118

1122

90

10

6

M10*1

10

940

95

80

0.5

443

300

014 • 40 • 1120 • **

1242

998

100

1198

1042

36

22

1118

1122

90

10

6

M10*1

12

936

79

80

0.5

443

300

013 • 75 • 3150 • **

3376

2922

174

3286

3014

56

45

3148

3153

162

12

8

M10*1

20

2820

142

150

0.5

2380

2800

014 • 75 • 3150 • **

3376

2922

174

3286

3014

56

45

3148

3153

162

12

8

M10*1

22

2816

129

150

0.5

2380

2800

013 • 75 • 4500 • **

4726

4272

174

4636

4364

60

45

4498

4503

162

12

10

M10*1

22

4158

190

150

0.5

3410

4000

014 • 75 • 4500 • **

4726

4272

174

4636

4364

60

45

4498

4503

162

12

10

M10*1

25

4150

167

150

0.5

3410

4000

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About our company

Zava Marine Corporation is a leading supplier of marine parts and components. With a strong focus on quality and customer satisfaction, we specialize in providing a comprehensive range of high-quality marine equipment and accessories. Our products include deck equipment, ship accessories, and various other essential components needed for smooth maritime operations.

With a global presence, we serve a diverse customer base, including shipbuilders, shipowners, offshore operators, and marine equipment distributors. We are committed to providing exceptional service and tailored solutions to meet our customers’ unique needs.

FAQ

Zava Marine offers a comprehensive range of certifications for marine parts in accordance with international standards and regulations. These certifications include those provided by renowned marine classification societies such as Lloyd’s Register (LR), Bureau Veritas (BV), China Classification Society (CCS), Registro Italiano Navale (RINA), American Bureau of Shipping (ABS), Nippon Kaiji Kyokai (NK), and Det Norske Veritas – Germanischer Lloyd (DNV-GL). By collaborating with these esteemed societies, Zava Marine ensures that our certified marine parts meet the highest standards of safety, quality, and performance, instilling confidence in our reliability and compliance within the maritime industry.

The warranty provided by Zava Marine covers defects in materials and workmanship for a period of two years from the date of purchase. During this warranty period, if any marine parts purchased from Zava Marine exhibit issues or failures resulting from manufacturing defects or faulty materials, Zava Marine will take responsibility for repair or replacement of the affected parts. 

Zava Marine has recently opened new molds for European and North American clients, utilizing materials such as metal, ABS, PVC, and more. These successful mold opening projects allow us to provide customized marine parts and components that meet the specific requirements of our clients in these regions.

Typically, Zava Marine can ship samples within 7 days once the product drawing has been mutually confirmed by both parties. This efficient process ensures that customers can receive samples promptly, allowing them to assess the quality and suitability of the products.

Zava Marine frequently utilizes a wide range of materials in our projects. These materials include aluminum, stainless steel, carbon steel, copper, plastics, titanium, and PEEK (Polyether Ether Ketone). Each material offers unique properties and characteristics suitable for various marine applications. 

Yes, we provide customization services for marine parts. We understand that every project and application may have unique requirements, and we are committed to delivering tailored solutions. By collaborating closely with our clients, we can adapt our products to specific specifications, ensuring optimal fit, performance, and compatibility. Whether it’s modifying existing designs or creating entirely new parts, our customization services cater to the diverse needs of the maritime industry.

Absolutely! We offer product design and development services to support our clients’ needs. Our experienced team of engineers and designers can collaborate with clients from concept development to final product realization. By leveraging our expertise in marine engineering and design, we can provide valuable insights and innovative solutions. Whether it’s optimizing existing designs or creating entirely new products, we are equipped to assist clients in bringing their ideas to life efficiently and effectively.

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