NOV D-495 7K Rotary Table 49 1/2

Basic Specifications

• Model: NOV / National Oilwell Varco D-495

• Table opening: 49-1/2 in (1,257 mm)

• Rated static load: ≈ 1,500–1,600 kips (≈ 680–726 metric tons)

• Drive: Hydraulic motor (often Hagglunds type on many rigs)

• Maximum continuous torque: ~35,000 ft-lb

• Maximum operating speed: ~25.5 RPM

Typical Design / Features

• Built for land and offshore drilling rigs.

• Designed to handle large drill pipe, casing, and BHA components.

• Compatible with API master bushings and slips.

• Heavy-duty gearbox and bearings for high drilling loads.

• Built for easy maintenance and component access.

General Application

• Used on medium-to-large drilling rigs with top drives or kelly systems.

• Often paired with PS-21 power slips and iron roughneck systems on modern rigs.