Dredge Ball Joint

Dredge Yard ball joints are designed by using the latest CAD technologies, production methods and testing facilities in Europe and the Republic of Turkey.
To provide customer with the best suitable solution and lowest cost , Dredge Yard ball joints are designed in six different types, giving variations of tilting angle from 15 to 18 degrees and duties from 10 bar to 30 bar.


All dredge ball joints are designed, produced, assembled, tested, painted, greased, packed and transported under close super vision of Dredge Yard team of engineers and quality control. Dredge Yard emphasizes on after sales and ensures total customer satisfaction.
Dredge Yard ball joints are designed, produced and tested under strict ISO and ASTM standards and double tested at third party for verification.

Dredge ball joint types

Tilting angle of 15 degrees

• Low Duty for operating pressure of 10 bar
• Medium Duty for operating pressure of 20 bar
• Heavy Duty for operating pressure of 30 bar

Dredge Ball Joint

Tilting angle of 18 degrees

• Low Duty for operating pressure of 10 bar
• Medium Duty for operating pressure of 20 bar
• Heavy Duty for operating pressure of 30 bar

Dredge ball joint features

• Grease grooves provided in the gland
• Stiffened dredge ball joint case lugs
• Quick fix and release locking using a pin and chain connection
• Pipe welded through ball
• Maximum thickness provided at the neck of the ball joint

Dredge ball joint benefits

• Easy assembly and disassembly
• Low maintenance required
• Low friction between ball and gland due to grease grooves and polished ball and gland face
• Replaceable liners made from wear resistant materials
• Quick fix and release of locking

Dredge ball joint materials

• Case: cast iron of a manganese alloy providing high elongation and impact value
• Ball: cast iron of a manganese alloy providing high elongation and impact value
• Gland : cast iron of a chromium, nickel and molybdenum alloy providing a high tensile, high yield and high hardness values.
• Liner: ductile manganese iron or hard chromium iron for wear resistant properties
• Seal: NBR 70

Dredge Ball Joint cross section

Dredge ball joint production

• Production of dredge ball joints is done at high quality and experienced foundry with the latest production facilities to ensurehigh quality casting and quick delivery time.
• Patterns are made from aluminum to ensure that all parts are identical and interchangeable.
• All castings of dredge ball joint are heat treated according ISO and ASTM
• All castings are measured and tested before machining
• All products are measured and tested after machining and before releasing for transport
• Cast areas are painted and machined surfaces are greased after machining
• All measurements and tests are recorded at Dredge Yard database

Dredge ball joint quality control

The following testing is done during and after production:

• Chemical composition test at third party
• Mechanical properties test at third party
• Measurement test of all dimensions after casting
• Ultra sonic testing for 20% of all surfaces
• Magnetic particle tests for critical parts
• Dye penetrant inspection for critical parts
• Measurement test of all dimensions after machining
• Surface roughness test for critical surfaces
• Hardness test for all parts
• Assembly test and interchangeability for all parts
• Locking fix and release test for all dredge ball joints
• Visual inspection for all parts during and after assembly

Customers are welcome to witness any test in our production facilities.

Dredge ball joint additional options

• Dredge ball joints can be provided with welded pipe and Flange execution
• Gland liner
• Ball liner
• Extra or special lifting lugs
• Different type of locking