Self-oiling bearings; Ball-bearings; Bearing brackets for machines; Bearings (parts of machines); Bearings for transmission shafts; Roller bearings; Ball rings for bearings; Anti-friction bearings for machines; Shaft couplings (machines); Axles for machines; Machine wheelwork; Journals (parts of machines); Transmissions for machines; Reels, mechanical, for flexible hoses; Couplings, other than for land vehicles; Crank shafts; Transmission shafts (other than for land vehicles)