guide rod

guide rod

[′gīd ‚räd]
(mining engineering)
A heavy drill rod coupled to and having the same diameter as a core barrel on which it is used; gives additional rigidity to the core barrel and helps to prevent deflection of the borehole. Also known as core barrel rod; oversize rod.
References in periodicals archive ?
Unscrew the barrel mounting set screw just enough so that you can remove the barrel by tipping the breech end up and working it out of the receiver while clearing the recoil guide rod spring (rod) that is protruding from the face of the slide.
The G19 Gen5 looks more like an oversized G26, complete with the dual-spring guide rod inside and tapered slide muzzle.
The remaining part has been attached to an operating rod that goes forward above the barrel, inside which is the guide rod and spring.
The 10mm version of the SR1911 features a full-length guide rod.
What Are the Pros and Cons of a Full-Length Recoil Spring Guide Rod in a Model 1911?
A lightweight heater and guide rod latching system eliminate the need to manually hold the heater in place during overhead fusions, reducing operator fatigue.
In both cases, it's because their recoil spring guide rod extends far enough forward to create "standoff effect" which prevents the slide from going out of battery.
Unique and effective cocking serrations feature the Cabot Trinity stripes, and the TriStar trigger and guide rod feature the company's signature stars.
All models feature a high-ride beavertail grip safety, extended magazine release, beveled magazine well, aluminum trigger with an over-travel stop, stainless steel full-length guide rod, extended thumb safety, enlarged ejection port and double-diamond-checkered wood grip.
The workpiece is placed under the drill chuck and positioned so this guide rod can be lowered with no binding into the existing hole.
IT ALSO HAS AN EXPANSION GUIDE ROD THAT ALLOWS FOR FUEL EXPANSION.
A flexible guide rod attached to the front of the first rod was used to help ensure the smooth installation of rods.