At A Glance: The 98-104 Six Arm Spider Rotor

The 98-104 Six Arm Spider Rotor from Riverside Products, Bettendorf, Iowa, is constructed out of cast alloy.

• The rotor shaft is a fully machined, certified vacuum degassed rotor shaft.

• Approximate weight is 56,000 pounds without the hammers, hammer pins, pin protectors or spider caps.

• The rotor uses 39 spider caps and normally runs a 16-hammer pattern.