VOSTA LMG is a designer and manufacturer of ball joints with over 30 years experience. The standard range of Vosta ball joints is based on a patented bayonet type ball joint that was specifically designed for the demanding circumstances encountered in the dredging industry. The design is well proven in the field and includes a replaceable wear liner in the case (female part) and a pipe through ball construction to protect the ball joint from direct wear.
The bayonet connection is locked by either a locking pin or a locking plate. The main advantage of the locking plate is that it can always be easily placed and removed, because there is no need to line up any holes.
Lining up the pipes during coupling is not necessary as coupling and locking takes place in any position within the maximum angle allowed by the ball movement.
The range of standard VOSTA ball joints is available for various dredge pipe diameters. Besides the standard range VOSTA LMG also supplies a wide range of ball joints with alternative designs and features, for example increased pressure rating and alternative tilting angles. Information regarding these alternatives can be supplied upon request.
Enquiries: coupling@vostalmg.com
Main features
- Bayonet type connection with 2x 15 degrees tilting angle
- Locking pin or locking plate to secure the bayonet
- Replaceable wear liner for long life
- Weld-on attachment to the dredge pipe and 'pipe through ball' construction
- Working pressure of 20 bar
- CNC-machined surfaces to guarantee proper fitting and exchangeability of the parts
- Accurately polished ball and gland bearing surface to reduce friction and increase sealing qualities
- Grease fittings placed sunken into the gland
Gland with retaining ring:
Prevents the gland from slipping from the surface of the ball before and during assembly.
High pressure (HP) execution:
With special design features and reinforced parts the HP ball joint can cope with extremely high pressures, while reducing the total weight to a minimum.
Flanged execution:
Executed with flanged connection instead of weld-on connection to the dredge pipe.
Ball liner:
Coned wear liner in ball
- VOSTA LMG has designed and supplied ball joints for over 25 years.
- Vosta ball joints are used by practically all major dredging companies.
- Over 1000 ball joints have been produces and delivered in the past five years.
- Deliveries include High Pressure ball joints for one of the largest cutter dredgers in the world, the CSD d'Artagnan.
- These ball joints with a weight of about 6.800 kg and an outer dimension of 2 meters are capable of handling a test pressure of at least 40 bars.
