the chuck gets stuck and i can't loosen it by hand to change bits, do i need the key?

Diagnosis

The Ryobi ONE+ HP 18V Brushless Drill PBLDD01B features a keyless three-jaw chuck designed for tool-free bit changes. However, when using the high-torque brushless motor on heavy-duty fasteners or large diameter holes, "over-tightening" occurs. This happens because the rotational inertia of the motor can cause the chuck jaws to cinch tighter than human grip strength can reverse, essentially welding the internal collet to the bit. This is often exacerbated by the use of hexagonal bits that have slight manufacturing variances; if the bit is slightly oversized, the jaws bite deeper into the metal. You can confirm this is the issue if the outer sleeve of the chuck spins freely but the inner jaws remain locked, or if the entire sleeve is seized and refuses to rotate counter-clockwise regardless of the pressure applied.

How to Fix It

Since this model is a keyless design, you do not need a separate chuck key. Instead, you must use the drill's own motor to break the static friction of the seized jaws.

1. Insert the drill into the Reverse (CCW) position by sliding the torque selector switch fully to the right.
2. Ensure the clutch ring is set to the Drill Icon (maximum torque) rather than a numbered setting to ensure full power is delivered to the chuck.
3. Grip the chuck sleeve firmly with your non-dominant hand. If you have a piece of rubber shelving liner or a leather glove, wrap it around the sleeve to increase friction and prevent slipping.
4. Squeeze the trigger in short, rapid "pulses" rather than a long hold. These sharp bursts of torque create a hammering effect that vibrates the internal collet loose.
5. As soon as you feel the sleeve rotate slightly, stop the motor immediately to avoid stripping the internal threads.
6. Now, rotate the sleeve counter-clockwise by hand to fully open the jaws and remove the stuck bit.

If That Didn't Work

If the motor pulse method fails, try these progressive escalation steps:

• The Impact Method: Use a rubber mallet or a dead-blow hammer. Hold the drill firmly and give the side of the chuck sleeve a series of sharp, brisk taps. This shocks the internal locking mechanism and can break the bond between the jaw and the bit.
• Pliers Leverage: Use a pair of locking C-clamp pliers (Vise-Grips). Clamp them onto the outer sleeve of the chuck. This provides significantly more leverage than your hand. Rotate the pliers counter-clockwise. Be careful not to crush the sleeve, as this will permanently deform the chuck and make future bit changes impossible.
• Penetrating Lubricant: Apply a small amount of WD-40 Specialist Penetrant or PB Blaster to the seam where the chuck sleeve meets the drill body. Let it soak for 15 minutes to lubricate the internal threads, then repeat the "Reverse Pulse" method.
• Heat Expansion: Use a heat gun on a low setting to warm the outer sleeve of the chuck for 30 seconds. The heat causes the metal to expand slightly, which can break the friction lock of a seized bit.

Heads Up

• Avoid "over-torquing" the chuck when inserting bits; tighten only until the bit is secure. The brushless motor's power makes it easy to tighten too far.
• Always wipe your drill bits clean of oil or grease before inserting them, as lubricants can cause bits to slip, leading you to over-tighten the chuck to compensate.
• Periodically apply a single drop of dry silicone lubricant to the outer threads of the chuck to prevent future seizing.
• If you frequently use high-torque settings, consider switching to impact-rated bits which have a more consistent diameter and are less likely to wedge in the jaws.