Case Studies

Client

SOUTHERN WATER

WATER TRANSFER SCREW

Timeframe

6 weeks

The Brief:

A waste transfer screw had a worn flight and shaft diameter. The unit was around 600 mm in diameter over the flights and was 6.5 meters long. It weighed in the region of 7 tonnes.

We manufactured and fit a new stainless steel sleeve, secured it  into position then machine afterwards to the desired size given by our customer.

The Solution:

We set the large screw in our CNC lathe and machined off the damaged area of the bearing seat. We manufactured and fitted a new stainless steel sleeve, secured it into position, and then machined it to the size given by our customer.

We chose a lathe chuck, ensuring that the appropriate type and size based on the roll’s diameter and weight was selected. Before securing the roll in the lathe chuck, we checked the lathe chuck jaws for damage and ensured that they were clean. We tightened the chuck securely using a chuck key.

To begin the machining process, we ensured that the roll was cleaned and correctly supported. Before cutting, we ensured that the roll was centered and tightly secured in the lathe chuck. We then set the lathe tool’s cutting depth and speed based on the material being machined.

With care, we machined off the damaged area of the bearing seat to the specified size. Then, manufactured the stainless steel sleeve to the customer’s specifications, ensuring that it fitted appropriately on the roll. Secured the sleeve onto the roll using appropriate methods such as welding or adhesive bonding. Finally, machine the stainless steel sleeve to the desired size, ensuring that it is smooth and free of defects. Perform a final inspection to ensure that the roll and stainless steel sleeve meet all customer specifications and requirements.