Computer Pattern 20CrMnTi Sewing Machine Gear Set for Embroidery Transmission Systems

Computer Pattern 20CrMnTi Sewing Machine Gear Set for Embroidery Transmission Systems

Computer pattern sewing machine gears are special precision transmission gears for automatic computer pattern sewing machines, including spur gears, helical gears, bevel gears, gear shafts and duplex gears. They are compatible with all major brands of pattern sewing machines and computer sewing equipment. Made of wear-resistant alloy steel with precision machining and professional heat treatment, they run smoothly, quietly and durably. They accurately match main shaft transmission, feeding mechanism, shuttle swing mechanism and XY displacement drive system, ensuring precise sewing positioning, even stitch distance and stable machine operation. They are core vulnerable transmission parts for sewing machinery.

Product Features

• Special module tooth profile for sewing machines, small meshing gap, accurate positioning without deviation.
• Made of high wear-resistant material, not easy to wear or break under long-term high-speed operation.
• Low operating noise and smooth transmission reduce sewing vibration.
• High temperature resistance without annealing, suitable for long-time continuous workshop working condition.
• Unified precision and strong interchangeability, directly replace original parts.
• Even force bearing, resist impact load from frequent start and stop, long service life.
• Rust and oil resistant surface, adapt to oily working environment of sewing workshop.
• Complete specifications fit all large, medium and small pattern sewing machine models.

Technical Parameter Table

Working Principle

The computer pattern sewing machine outputs power by motor, and transmits rotating power stably to all executive mechanisms through meshing gear sets. Matching gears with different teeth changes transmission speed and angle, accurately controlling feeding speed, shuttle swing range and head moving stroke, so as to complete sewing work strictly according to computer programmed pattern track. Precise gear meshing ensures uniform stitch distance and neat stitching. It buffers force during start and stop to avoid position deviation, realizing automatic high-precision pattern sewing.

Main Applications

• Main shaft power transmission gears for computer pattern sewing machines.
• Transmission gears for upper and lower feeding mechanism.
• Drive bevel gears for shuttle swing assembly.
• XY axis front-back and left-right moving gear sets.
• Eccentric gears and duplex gears for sewing head lifting.
• Replacement original gears for industrial computer sewing machines.
• Transmission parts for luggage, leather goods, shoes and garment sewing equipment.
• Complete transmission gears for automatic template sewing machines.

Product Advantages

• Special sewing machine tooth profile design ensures accurate movement and neat sewing stitches.
• High wear-resistant heat treatment process has higher durability than ordinary gears, reducing replacement frequency.
• Low transmission resistance saves power and reduces motor operating load.
• Low noise operation improves workshop working environment.
• Standard universal specifications, easy installation and convenient maintenance replacement.
• Oil and corrosion resistant, no rust or jamming in long-term oily sewing environment.
• Impact resistance and anti-breaking performance fit frequent start-stop working mode.
• Stable bulk supply and high cost performance greatly reduce equipment maintenance cost.

Production Process

• High-quality steel raw material inspection → 2. Cutting and forging forming
• CNC lathe finish turning gear blank outer circle, inner hole and end face
• Roll standard tooth profile by special sewing machine gear hobbing machine
• Tooth end chamfering and deburring finishing
• Overall quenching & tempering + tooth surface induction hardening
• Inner hole precision grinding to correct concentricity
• Meshing tightness matching screening
• Anti-rust and oil-proof protection treatment
• Full inspection of size and hardness → 10. Sorting, packaging and delivery

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.

Our company was formerly known as Changsha Double Star Gear Industrial Co., Ltd, which was established in 1994. It is a directly affiliated university-run enterprise founded by Central South University Professor Zeng Tao, the leading expert on spiral bevel gears in China. It was later renamed as Changsha Senjie Gear Co., Ltd (abbreviated as "CSG") in 2016. CSG is a production R&D base specializing in professional design, reserch, manufacture and sales of high-quality small module spiral bevel gears and high reduction hypoid gears and cylindrical gears. In 2023, Hunan Dinghan New Material Technology Co., Ltd. was established as a specialized international export business department. CSG has strong scientific research and development capabilities and is also equipped a full set of advanced equipment including seven-axis five-linkage CNC spiral bevel gear grinding machines and gear milling machines. By making the best use of the scientific and technological achievements and equipment of the Gear Research Institute of Central South University, machanical processing, heat treatment and testing. We have developed high-quality products featuring high reduction, high speed, heavy load, low noise and less teeth for users.

With the quality policy of "scientific and technological innovation, quality first, being first-class firm and customer‘s satisfaction", we have won the trust of well-known domestic and abroad enterprises with stable and excellent quality. It is committed to be a pioneer of the industry of China's small-module spiral bevel gears, and is dedicated to providing service for any related industry requiring industrial robots, CNC turning and milling compound power tool turrets, industrial sewing machines, reducers, bicycles, power tools and aeromodelling. We sincerely look forward to your cooperation!