TDS-11SA To TDS-11SAE Upgrade Advantage

Top drive upgrade :More power, field lifetorque, and efficiency

Gearbox improvements

• To maintain the proven service life and design safety factor of the TDS-11SA while still

enabling the upgrade, major internal changes were necessary to the gearbox.

• Compound and pinion gears and the bull gear mounting all required changes to

accommodate the loads from the increase in power

• Bearing sizes and housings, as well, had to be adjusted to accommodate the increased

load.

• The gear box cover required new casting and machining to accommodate changes to the

bearing.

These important changes come together to provide customers with a cost-effective solution to upgrade a critical piece of drilling equipment.