| Bed size and usable drilling area |
Compare the table or bed dimensions with the largest workpiece you need to clamp, including fixture space. |
A machine can have enough spindle travel but still be too small once jigs, clamps, and edge clearance are included. |
Ask: What is the maximum part size that can be drilled without repositioning, after clamps are fitted? |
| Spindle travel and throat depth |
Confirm the vertical stroke, distance from spindle center to column, and maximum clearance under the spindle. |
These dimensions decide hole depth, reach from the workpiece edge, and whether taller parts or fixtures will fit. |
Ask: Can you match the machine dimensions to a sample drawing or photo of the part I plan to drill? |
| Material and hole requirements |
State the workpiece material, hole diameter range, hole depth, and whether the operation is drilling, tapping, countersinking, or reaming. |
A bed drilling machine suited to light holes in thin material may not handle larger holes, harder material, or repeated tapping reliably. |
Ask: Which spindle speed range and feed method do you recommend for my material and hole size? |
| Workholding and repeat positioning |
Review how the part will be located: T-slots, vise, fixture plate, stops, or custom jigs. |
Poor workholding causes wandering holes, inconsistent spacing, and slower batch production even if the drill itself is adequate. |
Ask: What bed slot pattern and fixture options are available for repeat drilling of the same part? |
| Power supply, controls, and shop fit |
Confirm voltage, phase, motor power, floor space, guarding, and whether manual, semi-automatic, or CNC control is needed. |
A machine that does not match the workshop supply or production method can add installation cost or limit daily output. |
Ask: What installation details should I confirm before ordering, including power, footprint, and operator controls? |