Are 22 to 25 the Same Model of Thread Rolling Wheel?

[PaisleyAnn]

22 to 25 are the same model of thread rolling wheel, and you just need to adjust the stripping gear. 1. Differences in Thread Rolling Wheels: The main distinctions among construction thread rolling wheels are the pitch, the thread angle, and whether they are numbered wheels or single-piece wheels. Numbered wheels have numbers 1, 2, 3 or one dot, two dots, three dots engraved on the three wheels respectively. For 16-22 rebar couplers, the national standard requires thread rolling wheels with a 2.5 pitch, while for rebar couplers above 25, a 3.0 pitch thread rolling wheel is needed. 2. Precautions: The thread rolling machine has poor precision, significant vibration, or operates abnormally; the thread rolling dies are misaligned, causing axial displacement of the rolled part, subjecting the threads to both shear and compressive stresses; the dimensions of the rolled thread blanks are uneven, and the surface is not cleaned properly, containing grinding dust, oxide scale, and dirt.

[SophiaRose]

As someone who has long been exposed to automotive tools, I know that thread rolling dies are common tools used to create bolt threads. The range of 22 to 25 usually refers to the size range of bolts, such as M22 indicating a bolt with a diameter of 22 millimeters, rather than a single model of thread rolling die. Thread rolling dies are designed for specific sizes, with each model corresponding to only one size to ensure thread precision. In automotive repair shops, we often emphasize selecting thread rolling dies that match the specific bolt size; otherwise, the threads can easily be damaged, affecting assembly quality. If users mistakenly believe there is a universal model, I recommend consulting standard tool manuals or confirming each model's specifications with suppliers. Experience from daily use tells me that such small details should never be overlooked, as mistakes can lead to more troublesome rework.

[LeDonovan]

Hey, regarding thread rolling dies, the numbers 22 to 25 sound like the size range of bolts. Thread rolling dies must be precisely designed to match the dimensions, with each model dedicated to a single thread type. When machining automotive parts, such as M22 bolts, you must use the dedicated M22 thread rolling die—don't expect one tool to handle everything. I've seen cases where someone took a shortcut with the wrong size, resulting in crooked threads and degraded overall performance. Remember, it's more convenient to keep multiple die sizes on hand—don't skimp on this cost. Safety first, after all. Checking the tool label or looking up specific codes online can prevent mistakes. Simply put, thread rolling dies aren't universal fix-alls.

[Margot]

I believe 22 to 25 likely refers to bolt sizes, with threading dies needing to match each model individually. Each size such as M22 has independently designed threading dies to ensure thread precision. In automotive applications, selecting the correct tool prevents thread deformation.