Anti-friction bearings for machines; Ball bearings for use in machines, namely, lifting machines; Ball rings for bearings for machines, namely, lifting machines; Bearing brackets for machines; Bearing inserts for machines; Bearings for transmission shafts, being parts of machines; Machine parts, namely, bearings; Machine parts, namely, roller bearings; Machine parts, namely, bearing inserts; Self-lubricating mechanical friction parts, especially of composite materials, namely, wear rings, was...