20CrMnTi 20606/4400 Double Needle Sewing Machine Gear Set 30T/15T

Product Specification

20CrMnTi 20606/4400 Double Needle Sewing Machine Gear Set 30T/15T

20CrMnTi 20606/4400 Double Needle Sewing Machine Gear Set (30 Teeth / 15 Teeth) is a precision transmission component specifically designed for industrial double needle sewing machines. It is mainly used in 20606 and 4400 series double needle sewing machines and related industrial sewing equipment. The gear set features a combination of a 30-tooth driven gear and a 15-tooth driving gear, providing a transmission ratio of 2:1. This design effectively achieves speed reduction and torque multiplication, improving transmission efficiency and sewing stability. It is widely used in the manufacturing of luggage, leather goods, automotive interiors, furniture, tents, footwear materials, and other heavy-duty sewing applications.

Product Features

• Manufactured from premium 20CrMnTi alloy steel, offering high strength and excellent toughness.
• Carburized and hardened for high tooth surface hardness and extended service life.
• Precision tooth profile design ensures smooth meshing and low vibration.
• Reduces machine operating noise and improves the working environment.
• Minimizes power loss and ensures stable machine performance.
• Guarantees installation accuracy and transmission precision.
• Suitable for 20606 and 4400 series double needle sewing machines.
• Simple structure allows convenient installation, removal, and servicing.

Technical Parameter Table

 Main Applications

• Power Transmission System: Ensures stable power transmission for reliable machine operation.
• Speed Reduction & Torque Multiplication System: Reduces speed and increases torque for heavy-duty sewing applications.
• Synchronous Transmission System: Keeps all mechanisms operating in synchronization to improve sewing accuracy.
• Precision Transmission System: Provides smooth operation and helps reduce skipped stitches and thread breakage.

Product Advantages

• Made of 20CrMnTi alloy steel with high strength and excellent toughness.
• Carburized and quenched for high hardness and superior wear resistance.
• Accurate tooth profile, smooth meshing, and high transmission efficiency.
• Excellent wear resistance ensures extended operating life.
• Reduced vibration and noise for smoother performance.
• Easy maintenance, quick replacement, and lower operating costs.

Production Process

• Raw Material Procurement: Select high-quality 20CrMnTi alloy steel.
• Forging: Produce gear blanks through precision forging.
• Turning: Machine the outer diameter, bore, and reference surfaces.
• Gear Hobbing: Use CNC gear hobbing machines to form precise gear teeth.
• Heat Treatment: Perform carburizing, quenching, and tempering processes.
• Precision Machining: Finish critical dimensions and remove burrs.
• Inspection and Testing: Check gear accuracy, hardness, concentricity, and other key parameters.
• Anti-Rust Packaging: Apply anti-rust treatment and package the products for storage and transportation.

Cautions

• Clean Before Installation: Clean the shaft bore, mounting surfaces, and gear teeth before installation.
• Inspect Product Condition: Check for any damage, dents, or abnormalities before installation.
• Ensure Installation Accuracy: Maintain proper shaft alignment and correct gear meshing clearance.
• Secure Fastening: Tighten screws and locking components according to the specified torque.
• Proper Lubrication: Regularly apply grease or gear oil to ensure adequate lubrication.
• Avoid Abnormal Operating Conditions: Prevent overloading, impact loads, and frequent starts and stops.
• Regular Maintenance Inspection: Check gear wear, lubrication condition, and operating status regularly, address any abnormalities promptly.

Why choose us?

• 7-axis CNC Grinding: We adopt high-precision 7-axis CNC grinding machines, holding tolerances as tight as ±5μm, ensuring gears run quietly, smoothly and with outstanding durability.
• Strong technical expertise: Our core R&D team includes doctoral and master’s professionals specializing in spiral bevel gear technology, providing strong technical support for complex projects.
• Rigorous testing & high precision: All gears undergo 100% inspection with Gleason metrology systems. We can achieve DIN 6 grade accuracy with strict control over tooth profile and direction errors, keeping our quality at the industry-leading level.
• High transmission efficiency: Our gear designs support a single-stage reduction ratio of up to 300:1, with actual transmission efficiency reaching over 95%, greatly improving energy utilization.
• Excellent durability & cost efficiency: Our gears deliver 40% lower lifecycle cost and a failure rate below 0.5%, ensuring stable long-term operation and reduced maintenance costs.
• Fast response & short lead time: Supported by our digitalized production process, we are able to shorten the delivery cycle to only 20 working days, helping you accelerate project development and launch.
• Professional custom design capability: We provide fully customized gear solutions for applications requiring high-reduction, high-speed, heavy-load, low-noise, and special small-tooth profiles, based on your actual working conditions.