How to Change Speed on Drill Press? | Belt Steps & Variable-Speed

Changing drill press speed usually means moving the drive belt on stepped pulleys after unplugging the machine and loosening belt tension.

For the full breakdown, see our best 5 Speed Drill Press guide.

Getting the right speed on a drill press is what keeps bits from burning and holes from wandering. The exact process depends on whether your machine uses a belt-drive system or a variable-speed mechanism, but every method starts with the same safety step: disconnect the power. The steps below walk through both systems using instructions from the manuals that ship with common bench and floor models.

How Do You Change Speed on a Belt-Drive Drill Press?

Belt-drive drill presses use a stepped pulley system, and you change speed by moving the belt between different pulley steps. This is the most common setup on bench-top and floor models, and it works the same way across most brands.

The core sequence, confirmed across multiple owner’s manuals, looks like this:

• Unplug the drill press and disconnect it from power completely.
• Open the belt and pulley guard to access the pulleys.
• Loosen the belt tension lock knobs or screws on the motor mount.
• Move the motor to release tension from the belt (usually by pivoting it toward the front of the headstock).
• Slide the belt onto the pulley steps shown on the speed chart inside the belt cover. For the highest speed, place the belt on the largest step of the motor pulley and the smallest step of the spindle pulley.
• Pivot the motor back and check belt tension—it should be just tight enough to prevent slipping, not overly taut.
• Tighten the lock knobs and close the cover before plugging the machine back in.

The manuals agree on the tension rule: excessive tension shortens belt, pulley, and bearing life. If your machine has a lever instead of pivot points, turn the lever to relieve tension, move the belt, then reapply tension by repositioning the motor bracket.

What About Variable-Speed Drill Presses?

Variable-speed drill presses skip the belts entirely. Instead, you adjust speed with a handwheel, pilot-wheel handle, cam handle, or speed lever while the machine is running.

The method here is model-specific, and the manuals show real variation.

Here’s the catch: changing speed while the spindle is turning is only supported on these variable-speed designs. On a belt-drive machine, the spindle must be fully stopped and the machine unplugged before you touch the belt. One manual goes further and warns that speed changes require the machine to stop completely before any adjustment starts.

Common Mistakes and What to Avoid

Most speed-change failures come down to a few avoidable errors. Skipping the unplug step is the big one—multiple manuals warn against changing speeds with power connected. Failing to match the belt to the speed chart gives you the wrong RPM or poor belt tracking. And over-tightening the belt does real damage over time.

It also helps to remember that speed-change methods are not universal. If your machine uses stepped pulleys and belts, follow the chart under the belt guard. If it uses a handwheel or lever, the mechanism itself is the speed changer. When in doubt, check your model’s manual—the pulley diagram on the speed chart tells you exactly which grooves to use for each speed.

FAQs