Mechanical Parts
199 products
Mechanical parts are the physical backbone of your electronics and mechatronics projects. This category covers fasteners such as screws, nuts and washers; motion and bearing components including bearings, linear rails, carriages, shafts and couplings; power transmission parts like gears, belt-pulley systems and chains; as well as structural supports and mounting brackets. They are indispensable in robot kits, CNC machines, 3D printers, drone frames and industrial automation applications.
Selection Criteria & What to Watch For
- Material & durability: Steel, stainless steel, aluminum, brass or plastic must match the mechanical load, environmental conditions and weight targets.
- Dimensional compatibility: Thread pitch (metric / inch), shaft diameter, bearing type (ball / needle / plain) and mounting dimensions need exact alignment with your design.
- Precision & backlash: For high-position-accuracy systems like CNC and 3D printers, the parallelism of linear rails, zero-backlash couplings and low-backlash gearboxes are critical.
- Speed & torque requirements: Gear module, belt profile (e.g., GT2, T5) and reduction ratio must be matched to the stepper or servo motor torque.
Common mistakes include mismatched metric/imperial thread pairings, premature wear of overloaded plastic gears, bearing failures due to inadequate lubrication, and binding caused by misalignment in linear rail assemblies. Selecting each mechanical component according to its datasheet is essential for the efficiency and longevity of your project.
