1. Machine tool parts

They are the basic individual components that make up the machine tool itself, which cannot be split further under normal assembly. They form the inherent structure of the machine.

Features: Fundamental constituent units; belong to the machine’s original structural components.

Typical examples:

Screws, bearings, gears, shafts, springs, guide rails, lead screws, nuts, spindle components, cylinder liners, sealing rings.

2. Machine tool accessories

Auxiliary devices installed on machine tools to expand processing functions, improve machining accuracy, efficiency or operation convenience. Most are optional equipment, not mandatory structural parts for the machine to run.

Features: Auxiliary, interchangeable; users can select and equip them according to processing demands.

Typical examples:

Chucks, vices, rotary tables, tool holders, tool magazines, indexing heads, grinding wheels, coolant nozzles, workpiece fixtures, tapping attachments.

Simple Distinction Rule

✅ Parts: Built-in basic building blocks of the machine tool (the machine cannot be assembled without these core components).

✅ Accessories: External auxiliary fittings for machining tasks (the machine can operate without them, but processing capacity will be limited).

Short English Summary for business use

Machine tool parts refer to basic structural components forming the machine tool body.

Machine tool accessories are optional auxiliary devices fitted to machine tools to extend processing capability.