Couplings Brakes 3 Clutches (Machinery) 3 Gearing 3 Screws 3 Shafting 3 Vibration 3 more ... Belt drives 2 Cams 2 Chains 2 Corrosion and anti-corrosives 2 Fasteners 2 Flywheels 2 Joints (Engineering) 2 Machine design 2 Materials 2 Materials handling 2 Mechanical movements 2 Riveted joints 2 Roller bearings 2 Springs (Mechanism) 2 Strains and stresses 2 Tolerance (Engineering) 2 Welded joints 2 Air 1 Air conditioning 1 Air quality 1 Bearings (Machinery) 1 Boilers 1 Bolted joints 1 less ...