A mechanically reconditioned straight side press can be considered almost like a new press in many respects. 

Reconditioning typically involves replacing or refurbishing critical components, such as the crankshaft, bearings, and controls, restoring the press to near-original operating conditions.

When a used straight-side press is "rebuilt," it means the press undergoes a comprehensive restoration process to bring it back to near-new condition. This typically includes:

  1. Disassembly and Inspection: The press is completely disassembled, and all components are inspected for wear or damage.
  2. Replacement of Worn Parts: Worn or damaged parts such as bearings, seals, bushings, and gears are replaced.
  3. Machining and Refinishing: Critical surfaces are machined and refinished to restore precision.
  4. Upgrading Controls: The press may receive modern control systems and safety features.
  5. Reassembly and Testing: After rebuilding, the press is reassembled, aligned, and rigorously tested to ensure it meets original specifications.

A rebuilt press can offer similar performance and reliability as a new press, often at a lower cost.