GM-4.74 Battery-Powered Rail Grinder yɛ ano aduru a ɛyɛ ketewa, ɛkorɔn-precision ano aduru ma nkurow akɛse mu keteke, metro tunnels, ne switch zones a atetesɛm mu keteke a wɔde twitwiw nneɛma ntumi nyɛ adwuma. Ne mu duru yɛ kilogram 28 pɛ na 7.2kW lithium battery na ɛma ahoɔden, na ɛde dede a ɛkɔ so daa, a ɛba fam-dede ( a ennu anaasɛ ɛne 75 dB yɛ pɛ) ma a ɛnyɛ nea efi mu ba, na ɛma ɛyɛ nea eye ma anadwo nsiesie wɔ mmeae a ɛhɔ yɛ nwini anaasɛ wɔte hɔ. Wɔyɛɛ no ​​maa single-adwumayɛ, GM-4.74 no ma ɛyɛ ntɛm nhyehyɛe, weld finishing a etu mpɔn, ne rail profile correction a ɛyɛ pɛpɛɛpɛ — de tumi a ɛwɔ keteke akɛse a wɔde twitwiw nneɛma mu ba kilomita a etwa to a wɔde siesie track no.