Spur Gears – Pressure Angle 20 Degrees
?Material : 1045 Carbon Steel or Equivalent, 304 Stainless Steel, Stainless Steel, Steel
?Shape : Shape A, Shape B, Shape K
Gears
Browse precision spur gears and gear components for industrial automation, stamping dies, injection molds, and mechanical transmission systems. Available in carbon steel and stainless steel, standard modules from 0.5 to 3, 20° pressure angle.
Precision gears are the backbone of mechanical transmission systems. At GUNRI, we manufacture standard spur gears with 20° pressure angle, available in modules 0.5 to 3, in both 1045 carbon steel and 304 stainless steel. Whether you need a single replacement gear or production runs for an automation system, all our gears are machined to tight tolerances on advanced CNC hobbing equipment.
Why Choose GUNRI Spur Gears
- Standard 20° Pressure Angle — Compatible with the vast majority of modern gear systems. No special matching required.
- Multiple Configurations — Available in straight bore, bore+tap, keyway, and keyway+tap. Covers virtually all mounting scenarios.
- Carbon Steel & Stainless Steel — Choose 1045 carbon steel with black oxide for general industrial use, or 304 stainless steel for food-grade, medical, and corrosive environments.
- Modules 0.5 to 3 — From fine-pitch precision instruments to heavy-duty power transmission, we cover the most commonly specified module range.
- Custom Sizes Available — Non-standard bore diameters, special keyway dimensions, or custom hub lengths. Send us your drawing and we will machine to your exact specification.
Need Standard Spur Gears in a Hurry?
Browse our full range — modules 0.5 to 3, 20° pressure angle, carbon steel & stainless steel. Same-day shipping on most standard sizes.
Common Applications for Spur Gears
- Industrial Automation — Conveyor drives, indexing tables, pick-and-place units, packaging machinery
- Machine Tools — Feed drives, spindle speed reduction, tool changers
- Stamping Dies — Cam drivers, stock feeders, incremental indexing mechanisms
- Injection Molds — Core pull timing, unscrewing mechanisms, rotating mold sections
- Material Handling — Elevator drives, transfer systems, palletisers
- Printing & Packaging — Web tension control, registration adjustment, roller drives
Frequently Asked Questions
What is gear module and how do I calculate it?
Module (m) is the ratio of pitch diameter to number of teeth: m = D ÷ N. For example, a gear with 20 mm pitch diameter and 20 teeth has module 1. To identify an unknown gear, measure the outside diameter (OD) and count teeth (N). Approximate module = OD ÷ (N + 2). Round to the nearest standard value.
Can I use a module 1 gear with a module 1.5 gear?
No. Gears with different modules have different tooth sizes and pitches. They cannot mesh correctly. The module must be identical for both gears in a pair.
What is the difference between 20° and 14.5° pressure angle?
20° pressure angle is the modern standard. It offers stronger tooth roots, higher load capacity, and better resistance to tooth breakage. 14.5° is an older standard found in legacy equipment. Gears with different pressure angles cannot be interchanged even if module and tooth count match.
What materials are your spur gears available in?
Our standard spur gears are available in 1045 carbon steel (with or without black oxide treatment) and 304 stainless steel. We also accept custom orders in other materials such as brass, 316 stainless, or engineering plastics.
Do you offer custom bore sizes or keyways?
Yes. All our spur gears can be ordered with custom bore diameters, keyway dimensions, or hub modifications. Simply provide your specifications, and we will machine to your requirements.
