Trilock Cylindrical Plug Gages


Cylindrical plug gages are available in a variety of designs predicated on size and use. The preceding is a breakdown of the many designs. The taperlock gage gets its name from the tapered shank that latches into the tapered aperture at the end of the lever. It is the American Gage Design Committee's time-honored standard for gages up to 12 inches in diameter. The truth that these gages have enough tolerance and size marked on the shaft of the sections is a benefit. There is no doubt as to what they've been if and when they are detached from the handles.

The NoGo and Go members have a varied length of gauging surface, which aids in identification. Because the NoGo gage is not meant to enter the component, it is permitted to make it shorter. Read on to learn more about WESTport's Trilock Cylindrical Plug Gages.

Trilock Cylindrical Plug Gages’ Progressive Design  

In certain circumstances, having the NoGo and Go diameters on the same gage member might save some gauging time. For example, a progressive plug is appropriate for inspecting a short hole that is exposed on both sides. Furthermore, the opening cannot be subtler than the plug's Go portion. Progressive type gages are often taperlock, although any design may be made progressive.

The gauging members are just basic pins that may be withdrawn from the handle by tightening the collet nuts on the ends. Marking the tolerance and size on the tips of larger gage members helps to identify them. When the gage is too tiny, it is impossible to discern between the Go and NoGo members without the use of measuring devices. The collet nuts at the handle's ends are colored differently - red for NoGo and green for Go. This traffic light method is frequently used in attribute measurement.

Trilock Design

The pin (reversible) and Taperlock systems are not suitable for big, heavy gages. The trilock configuration has been proven to be ideally adapted for gages with diameters ranging from 8 to 12 inches. The trilock mechanism superficially resembles the design. The grip has triple prongs on each end that slide into slots, distributed uniformly around the gage members' centre hole. A bolt secures the part to the handle, while the trilock prongs and grooves provide stability.

Trilocks, like pin (reversible) locks, are bidirectional because either side may be fastened to the lever. Therefore, if the user values the reversibility characteristic, which allows for dual usage, one can buy reversible gages in all sizes in the range. Military specifications, which military contractors must normally follow, demand for pin type reversible gages in sizes ranging from .510 to 1.510 inches and taperlocks in sizes ranging from .510 to 1.510 inches. Trilocks are advised for sizes ranging from 1.510 to 8.010 inches.

The paramount concern in creating a very big gage (more than an 8-inch diameter) to keep it lightweight, enough to carry effortlessly without tiring the operator out. Because these gages must be fully reliable in size and roundness, they are made with very little metal parts as feasible. For convenient handling, the annulus gage has twin screw-in ball grips similar to those seen on machineries. 


Since 1989, the WESTport team has been providing excellent quality Trilock Cylindrical Plug Gages all around the world. We are devoted to consistently improve our goods, processes, and services in order to preserve our reputation as a dominant force in our market by putting our customers' interests first. We are also an ISO 9001, ISO 6508, ISO 6506, and ISO/IEC 17025 recognised manufacturer that provides "Quality you can Trust" to over 125 countries.

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