Precision Bevel Gears – Straight, Spiral & Zerol | Custom Bevel Gear Manufacturer
GUNRI manufactures precision bevel gears including straight tooth, spiral, and zerol types. Conical shaped gears for 90° intersecting shaft applications. Materials: alloy steel, stainless steel, brass. Inch and metric sizes. Custom designs supported.
Description
What Are Bevel Gears?
Bevel gears are conically shaped gears used to transmit mechanical power between intersecting shafts, typically at a 90° angle. The teeth are cut on the conical surface and can be straight, spiral, or zerol (curved with zero spiral angle). SDP/SI-style precision bevel gears manufactured to Gleason®/Coniflex® standards.
Types of Bevel Gears We Offer
Straight Tooth Bevel Gears — The most common and economical bevel gear type. Straight teeth cut on a conical blank. Suitable for lower-speed applications where noise is not critical. Available in precision and commercial grades.
Spiral Bevel Gears — Teeth cut at a helical angle (12°–20°) for smoother engagement, higher strength, and quieter operation. Ideal for high-speed, high-torque applications in automotive, aerospace, and industrial drives.
Zerol Bevel Gears — Combine benefits of straight and spiral bevel gears. Zero-degree spiral angle at the center of face width produces no axial thrust, allowing bidirectional rotation. Can be ground-finished for higher precision.
Hypoid Bevel Gears — Offset shaft axes allow the pinion to be larger and stronger than conventional bevel gears. Higher contact ratio enables greater torque transmission. Used in automotive differentials and heavy machinery.
Specifications
Inch: 16 to 72 Diametral Pitch
Metric: Module 0.5 to 8
Ratio Range: 1:1 to 5:1 (higher ratios available on custom order)
Materials: Alloy steel (SCM440/4140, SCM415), stainless steel (SUS304, 416SS), brass (C3604), aluminum, nylon
Applications
Automotive • Aerospace & Defense • Robotics • Industrial Mixers • Machine Tools • Printing Presses • Material Handling • Rail & Transportation
Why Choose GUNRI for Bevel Gears?
• Straight, spiral, zerol, and hypoid manufacturing capability
• Gleason®-type cutting processes for precision tooth forms
• Full range of hub styles: pin-type, clamp-type, Fairloc®-type
• Inch and metric sizes from stock or custom-designed
• Competitive OEM and volume production pricing