How to find the right Gear Stock & Pinion Wire AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Gear Stock & Pinion Wire
- Pitch system
- Diametral pitch (inch) or module (metric) must match the mating gear exactly DP and module gears look similar but will not mesh correctly, and nearby sizes are not interchangeable.
- Pressure angle
- Match the mating gear: 14.5° (older inch gearing) or 20° (current standard) Gears with different pressure angles bind, wear fast and run noisily even when the pitch matches.
- Material
- Steel for load, brass for clock and instrument work, nylon or acetal for quiet light duty Material sets wear life and strength, and determines whether the stock can be cut, turned or hardened afterwards.
- Face width and length
- Face width at least that of the mating gear; length enough to part off all needed pinions plus waste Narrow faces concentrate load, and pinion wire is usually cut into several pinions.
- Tooth count
- Count must give the required ratio with the mating gear; very low counts on 20° gearing risk undercut Low tooth counts weaken teeth and can interfere with the mating gear.
Brands that matter
- Boston Gear: Long-established line of inch-pitch spur gears, racks and gear stock.
- Martin Sprocket & Gear: Broad industrial range of stock spur gears and racks.
What to avoid
- Mixing diametral-pitch and metric-module parts
- Pairing a 14.5° pressure-angle gear with a 20° gear
- Listings that state tooth count but not pitch and pressure angle
Questions
Can a 14.5° gear mesh with a 20° gear of the same pitch?
Not properly. It may fit, but it will bind and wear quickly. Always match the pressure angle.