GATES同步带|圆弧齿同步带POWERGRIPHTD:264-8M320-8M360-8M376-8M384-8M416-8M424-8M480-8M512-8M520-8M560-8M576-8M592-8M600-8M608-8M624-8M640-8M656-8M672-8M680-8M720-8M744-8M760-8M776-8M800-8M840-8M856-8)