Brakes 4 Clutches (Machinery) Gearing 4 Cams 3 Chains 3 Screws 3 Springs (Mechanism) 3 more ... Belts and belting 2 Couplings 2 Fasteners 2 Feedback control systems 2 Flywheels 2 Hydraulic machinery 2 Lubrication and lubricants 2 Machine design 2 Materials 2 Materials handling 2 Mechanical engineering 2 Mechanical movements 2 Mechanical wear 2 Pneumatic machinery 2 Roller bearings 2 Shafting 2 Vibration 2 Actuators 1 Air conditioning 1 Air-compressors 1 Automatic control 1 Bearings (Machinery) 1 Belt drives 1 less ...