Based on standards and similar equipment, here are the kinds of specifications you’d expect (or want to verify):
| Parameter | Approximate / Typical Value / Considerations |
|---|---|
| Table opening / diameter | 49.5 inches (≈ 1,257 mm) — this is the inner clear opening for drill pipe etc. |
| Master bushings / bushings set | The listing includes a complete set of bushings — important for matching the drill string, casing, slip sizes. |
| Drive | Could have different drive configurations: DC electric motor (e.g. GE752), or hydraulic drive. This one has a GE752 motor. |
| Transmission & gearing | Has “National transmission” mentioned. That implies it uses National’s gearing / gear train — gear ratio, load capacity, pinion, sprocket rows etc. Verifying gear ratio / pinion type is important. |
| Static load rating | For a table of this size, static load ratings are often in the range of ~1,000 short tons or more (depending on design). I didn’t find a specific number for this particular unit, though the Wirth RTSS 49½-inch version (a similar size) has a static capacity ~1,000 short tons. |
| Speed and torque | The maximum and operating rotational speeds, plus torque, should match the rig’s requirements. The listings usually don’t give full operating torque, but the drive motor (GE752) and transmission type will influence this. |
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