1.5M SC45 Carbon Steel Spur Gear 56T–66T High-Frequency Quenched

1.5 Module Carbon Steel Cylindrical Spur Gear — 56 to 66 Teeth

Built for demanding mechanical applications, these 1.5M cylindrical spur gears are precision-cut from SC45# carbon steel and feature high-frequency quenching on the tooth surface for exceptional hardness, wear resistance, and long service life. Available in a full range of tooth counts — 56T, 57T, 58T, 59T, 60T, 61T, 62T, 63T, 64T, 65T, and 66T — these gears are ideal for custom machinery, robotics, automation equipment, conveyor systems, and industrial drive assemblies.

Made in Mainland China.

Key Specifications

• Model: 1.5M — 56T / 57T / 58T / 59T / 60T / 61T / 62T / 63T / 64T / 65T / 66T
• Material: SC45# Carbon Steel
• Surface Treatment: High-Frequency Quenching (tooth surface hardened)
• Tooth Profile: Spur Gear (Cylindrical)
• Shape: Ring Gear with Process Bore
• Gear Height: 10 mm / 15 mm
• Teeth Pitch: 4.71 mm
• Teeth Depth: 3.375 mm
• Inner Bore: Process Hole (customer-machinable)
• Package Includes: 1 × Gear

Why Choose These Gears?

• 🔩 High-Frequency Quenched Teeth — surface-hardened teeth resist wear and extend operational lifespan under heavy load cycles.
• ⚙️ SC45# Carbon Steel Construction — excellent tensile strength and toughness for reliable power transmission.
• 📐 Process Bore Design — the inner bore can be machined to your exact shaft diameter, offering maximum flexibility for custom builds.
• 🔧 Wide Tooth Count Range — select from 56T through 66T to achieve the exact gear ratio your application requires.
• 🏭 Versatile Applications — suitable for CNC machines, 3D printers, robotics, industrial drives, conveyor lines, and more.

Important Note

As a carbon steel product, minor surface oxidation (light rust) may be present upon delivery. This is a normal characteristic of the material and does not affect the gear's structural integrity, tooth profile accuracy, or mechanical performance. A light clean or protective coating prior to installation is recommended.

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Frequently Asked Questions

Q: What tooth counts are available for the 1.5M cylindrical spur gear?

A: This gear is available in 11 tooth count options: 56T, 57T, 58T, 59T, 60T, 61T, 62T, 63T, 64T, 65T, and 66T. Select the tooth count that matches your required gear ratio during checkout.

Q: What is high-frequency quenching and why does it matter?

A: High-frequency quenching is an induction heat-treatment process applied specifically to the tooth surface of the gear. It significantly increases the surface hardness while keeping the core tough and ductile. This means the teeth resist wear, pitting, and fatigue under repeated load cycles — extending the working life of the gear in power transmission systems.

Q: Can I machine the inner bore to fit my shaft?

A: Yes. The inner bore is supplied as a process hole, meaning it is designed to be finish-machined (bored, reamed, or broached) to your specific shaft diameter and keyway requirements. This makes the gear highly adaptable to custom and OEM mechanical assemblies.

Q: Is surface rust on delivery a quality defect?

A: No. Light surface oxidation is a natural characteristic of SC45# carbon steel and does not compromise the gear's tooth geometry, dimensional accuracy, or mechanical strength. Before installation, simply clean the surface and apply a suitable lubricant or rust-inhibiting coating as part of standard assembly practice.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.