A straight trommel, similar to a taper trommel, is a cylindrical drum with a perforated surface used for sorting and classifying materials. The term "straight" indicates that the diameter of the trommel drum remains consistent along its length, unlike a taper trommel where the diameter may change gradually.

When manufacturing straight trommels to meet various/customized sizes requested by customers, several key considerations and steps are involved:

1. Customer Requirements: Understanding the specific requirements of the customer is crucial. This includes factors such as the desired diameter, length, perforation size, material type and thickness, capacity, and any special features or customization requests.

2. Design and Engineering: Based on the customer's requirements, design engineers create detailed specifications and drawings for the straight trommel. This includes determining the optimal dimensions, drum construction materials, perforation pattern, support structure, and drive system.

3. Material Selection: Choosing the appropriate materials for constructing the trommel drum is essential for durability, performance, and longevity. Common materials include mild steel, stainless steel, or abrasion-resistant alloys, depending on the type of material being processed and the operating environment.

4. Fabrication and Manufacturing: Skilled fabricators and welders then manufacture the trommel drum and support structure according to the approved design specifications. Precision is crucial to ensure proper alignment and functionality of the trommel.

5. Perforation: Perforating the drum involves drilling or punching holes in the cylindrical surface to allow particles of a certain size to pass through while retaining larger materials for further processing. The size and pattern of the perforations are customized based on the customer's requirements and the characteristics of the materials being processed.

6. Assembly: Once all components are fabricated, the straight trommel is assembled, including attaching the drum to the support structure, installing the drive system (gearbox and motor or diesel engine), and integrating any additional features or accessories requested by the customer.

7. Testing and Quality Assurance: Before delivery, the straight trommel undergoes rigorous testing to ensure it meets performance standards and operates as intended. This may include testing the rotational speed, material throughput, screening efficiency, and overall durability.

8. Delivery and Installation: The finished straight trommel is then delivered to the customer's site and installed according to their specifications. Installation may involve mounting the trommel on a suitable foundation, connecting the drive system, and integrating it into the material handling system.

By following these steps and working closely with customers to understand their unique requirements, manufacturers can produce customized straight trommels that effectively meet the needs of various industries and applications.