China Machined Helical Metal Pinions Manufacturer, Supplier, Factory

Machined helical metal pinions are high-precision cylindrical gears with angled teeth that gradually engage mating components, reducing noise and distributing load across multiple teeth. Manufactured from forged or drawn alloy steel billets, these pinions undergo CNC turning, hobbing, and finish grinding to achieve tight tooth-to-tooth and cumulative pitch errors. They are engineered to work with Steel Helical Gear Components, Alloy Helical Transmission Gears, Metal Helical Pinion Sets, and Metallic Helical Gear Wheels in complete drive assemblies. Standard materials include case-hardened 8620, 20CrMnTi, 42CrMo, and 17CrNiMo6, with optional stainless steel for corrosive environments. Tooth surfaces are typically carburized to 58–62 HRC, then ground or honed to Ra 0.4–0.8 µm. Quality control follows AGMA 2015 and ISO 1328, using double-flank roll testing and CMM inspection to verify profile, lead, and runout. This production discipline ensures interchangeability with existing gear systems and long service life in high-torque applications.
Machined Helical Metal Pinions are available in both standard and custom configurations, with a complete range of dimensional and metallurgical options to match demanding power transmission tasks. The following list details the primary specifications that customers select when configuring a pinion for a new or existing gearbox.

• Tooth profile: involute, full-depth or stub teeth, with profile shift options.
• Module range: 0.5 mm to 8 mm as standard; up to 16 mm on request.
• Number of teeth: 8 to 120 standard; special tooth counts above 120 are produced through custom hobbing.
• Pressure angle: 20 degrees default; 14.5 and 25 degrees available for specialized load and backlash requirements.
• Helix angle: 10 to 30 degrees left-hand or right-hand; common angles include 15, 20, and 23 degrees.
• Face width: 8 mm to 160 mm standard, dependent on module and bending stress calculations.
• Hub configuration: plain bore, keyway, set screw, clamp, or spline bore from 4 mm to 120 mm.
• Material grades: 8620, 20CrMnTi, 42CrMo, 17CrNiMo6, 16MnCr5, stainless steel 17-4PH, and powdered metal.
• Heat treatment: carburizing, carbonitriding, induction hardening, nitriding, or through hardening.
• Core hardness: 30–45 HRC; surface hardness 55–62 HRC after case hardening.
• Accuracy class: AGMA 8–12, DIN 6–9, or ISO 6–9; ground options reach AGMA 13.
• Surface treatment: black oxide, phosphate, zinc plating, or electroless nickel for corrosion resistance.

Beyond these standard parameters, each order of Machined Helical Metal Pinions can be customized with shaft pinions, integral hubs, anti-backlash features, or matched sets with specific center distance and backlash targets. Reverse engineering from sample parts or CAD files is supported, and all custom designs are validated through tooth contact analysis and finite element simulation before production. Each batch ships with dimensional inspection reports, material certificates, and heat treatment records. For high-volume programs, precision forging or powder metallurgy can be combined with finish machining to reduce unit cost while maintaining AGMA quality levels.