Thordon Bearings Inc., a Thomson-Gordon Group company, is a family-owned business manufacturing high performance, oil- and grease-free bearing systems, seals and other shaft line products for the global marine, clean power, pump and industrial markets.
What is Thordon SXL?
Thordon Bearings manufactures a seawater lubricated propeller shaft bearing system that is unlike traditional water lubricated rubber bearing systems. It uses elastomeric polymer bearings designed uniquely to offer desirable performance and operational benefits.
How does a Thordon Compac stern tube bearing work?
These bearings are lubricated by lube oil and to prevent leakage of oil out at sea or ingress of water inside the tube, lip seals are attached at forward and aft part of the tube. The Thordon bearing system uses sea water for lubrication of the propeller shaft and bearing.
What is a cutlass bearing?
Your Johnson Cutless Bearing (also known as “cutlass” bearing) is a fluted rubber tube that holds your propeller shaft in place, and keeps it spinning smoothly.
How do stern tube seals work?
A housing with series of seal rings clamped into position on the bush. Sterntube seals have to perform two separate functions, one is to ensure that water does not enter the engine room, the second one to allow the propeller shaft to rotate as smoothly and freely as possible.
What is the function of stern tube?
The main function of stern tube bearings is to allow an unrestricted and smooth rotation of the propeller shaft. Apart from stern bearings, the stern tube also houses water and oil sealing glands known as the stern glands. The stern tube is a sensitive part of the ship where the sea water can easily seep inside.
What is the function of stern tube seal?
Sterntube seals have to perform two separate functions, one is to ensure that water does not enter the engine room, the second one to allow the propeller shaft to rotate as smoothly and freely as possible.
What are Thordon Bearings?
Thordon bearings can be specified as an upgrade for rubber or other non-metallic bearings in existing water-lubricated bearing systems or as a complete conversion from sealed oil or grease lubricated systems to pollution-free water lubrication.
What type of guide bearings are available for turbine bearings?
Thordon main guide bearings are usually supplied factory-bonded into split bearing housings, or on larger diameter shafts, onto multiple segment blocks. Thordon bearings can also be supplied in stave configuration if required. Thordon turbine guide bearings with tapered key design offer:
Why choose Thordon SXL rudder bearings?
Thordon SXL rudder bearings offer low friction, operating pressures up to 12 MPa (1,740 psi) and do not require grease or greasing systems removing any risk of pollution. Thordon SXL can also withstand high shock loads and edge loading. An impressive reference list of demanding, yet satisfied customers is available.
What are the standard Thordon machining tolerances?
standard Thordon machining tolerances are as follows: Bearings up to 330mm (13.00”) O.D. +0.13mm, -0.00mm (+0.005”, -0.000”) I.D. +0.13mm, -0.00mm (+0.005”, -0.000”) Bearings between 330 and 530mm (13.00” and 21.00”) O.D. +0.18mm, -0.00mm (+0.007”, -0.000”) Wall thickness (W.T.)
