WDL

I contacted Bosch with the problem and did not get very far. The response from Bosch was not from one with knowledge of the retaining device design; obviously only a first level "One ringy dingy, two ringy dingy, operator / front door greeter. I have forwarded your feedback to the appropriate team for the GDX18V-1800C. I would like to ask what happened with the GDX18V-1800C since you returned this to Lowe's. Victoria PT/SCP1-NA. I did not receive any additional contact, from any team. How am I to know what happens to a device once it is returned to the store? Somehow, I have the feeling there is something with the spring, which is a stiffer than the older standard collars I have experienced. When functioning correctly, the release ring travels fully. When malfunctioning the release ring travel is not enough to allow the securing ball to move out of the way. The type of spring used is not known but, I suspect the spring coil, in general, binds and perhaps somehow, overlaps itself, which might cause limited movement of the retaining ring, preventing its full travel. Spring coils, during compression, rotate and the number of coils per distance increase . In a conical design, the coil collapses within itself, allowing more compression travel. In a straight cylindrical type the coils stack on top of each other. I did not want to disassemble the device which might have prevented its return for refund.

Sorry I do not have an answer. I too have had this trouble. I purchased the Bosh GDX18V-1800 impact from Lowes. In the first one the 1/4 inch bits, constantly, would not go in, and when they did go in I had to use a vise and hammer to force them out. I returned it within 30 days for another new same make and model, Bosh 1800, as a replacement. This second one is having the same trouble with the 1/4 bits. The bits are not an off brand, they are Bosh bits and bit adapters. This post is the only one I found referencing this problem. I have now observed some of the 1800 models have a "Nut Looking" hexagonal item directly under the red release ring. This is something neither of mine had. These newer design releases also feel different when actuating them. Bosh must have realized an issue/defect and changed the design. Shameful Bosh did not send out a notification and or a modification kit to all previous owners. That is my thoughts as long as the new design rectifies the stuck bit defect. I will return this second GDX18V-1800 and give Bosh one last chance. Good Luck with yours!