Noun
(automotive) The wheels, suspension, steering, powertrain and usually the chassis of a motor vehicle.
(railways) Those components of a railway vehicle that run passively on the rails, unlike those of the driving gear. Traditionally these are the wheels, axles, axle boxes, springs and vehicle frame.
(historical) The wheels and axles of a carriage or other vehicle.
Source: en.wiktionary.orgDue to Lamborghini's shaky finances, Lamborghini fell behind schedule developing the car's structure and running gear. Source: Internet
Most designs enclose the running gear in the guideway to prevent derailments. Source: Internet
My strategy was to just tackle my day in 10-minute chunks, from putting on my running gear to having breakfast and taking those first few steps along the pathway. Source: Internet
The chassis, running gear, and other equipment have almost nothing to do with anything in ordinary automobiles. Source: Internet
They also provide for proper running gear alignment which prevents fretting. Source: Internet
My reaction was rather negative, but after some considerable discussion and finally the exchange of a small amount of cash, I became the owner of a frame, springs, engine running gear, body and a few other miscellaneous parts in rather dubious condition. Source: Internet