Zigzag 20CrMnTi Sewing Machine Gear Set for Multi-Layer Fabric Stitching

Product Specification

Zigzag 20CrMnTi Sewing Machine Gear Set for Multi-Layer Fabric Stitching Operations

Zigzag sewing machine gears are precision core transmission parts for zigzag sewing machines, including spur gears, helical gears, bevel gears (for needle swing), cam gears, link gears and duplex gears. They fit 2/3/4-point zigzag, electronic pattern zigzag and automatic thread trimming zigzag machines. Made of 40Cr/20CrMnTi high-quality alloy steel with quenching & tempering + induction/carburizing hardening, they feature precise needle swing, high speed & low noise, wear & impact resistance, stable stitches and multi-pattern adaptability. They transmit power for the main shaft, feeding, needle swing mechanism, thread take-up and trimming, ensuring accurate swing width (0–12mm), uniform stitch length, neat stitches and stable elasticity in zigzag sewing. They are key vulnerable parts for sewing underwear, bras, home textiles and elastic fabrics.

Product Features

• Precise needle swing control: Special bevel gear + cam gear combination ensures swing width error ≤±0.1mm with smooth 2/3/4-point zigzag switching.
• High-speed & quiet tooth profile: Small module, 20° pressure angle and polished tooth surface ensure smooth meshing with noise ≤65dB, suitable for 2500–4000 rpm high-speed operation.
• Elastic fabric adaptation: Reinforced tooth root and moderate torque prevent thread breakage, stitch distortion and poor elastic recovery when sewing elastic fabrics.
• High wear resistance & long life: Tooth surface hardness HRC 50–58 provides wear & fatigue resistance, enabling ≥8000 hours of continuous maintenance-free operation.
• Multi-pattern compatibility: Fits straight, crescent, needle-shaped and zigzag stitches with 700+ patterns and precise synchronization for electronic models.
• Oil & corrosion resistance: Blackened/phosphated surface resists sewing oil, dust and rust, adapting to closed oil pan lubrication.
• Strong interchangeability & easy maintenance: Standard module and inner hole fit Juki, Brother, Zoje, Hikari and other mainstream brands for easy replacement.
• Automatic trimming compatible: Fast response and precise synchronization of trimming gears ensure residue ≤3.5mm for efficient automated sewing.

Technical Parameter Table

Main Applications

• Main shaft transmission gears and gear shafts for 2/3/4-point zigzag machines.
• Special bevel + cam gear sets for needle swing mechanisms (core components).
• High-speed gear sets for feeding and thread take-up mechanisms.
• Pattern drive gears for electronic pattern zigzag machines (servo-linked).
• Gear parts for automatic thread trimming and reverse stitching mechanisms.
• Sewing equipment for elastic fabrics like underwear, bras, panties and swimwear.
• Zigzag processing for home textiles (pillows, curtains), apparel decoration, shoes, hats and luggage.
• Replacement gears for old zigzag machines (Juki, Brother, Zoje, etc.).

Product Advantages

• Precise needle swing: Special bevel + cam gears minimize swing error for neat, attractive stitches.
• Strong elastic adaptation: Wear-resistant tooth surface + moderate torque prevent breakage/distortion on elastic fabrics.
• High speed & low noise: Precision tooth profile + polishing ensure quiet operation (≤65dB) at high speed, improving workshop environment.
• Wear resistance & durability: Alloy steel + induction hardening deliver 2–3x longer life than ordinary gears, reducing downtime.
• Precise transmission: ISO Grade 7 precision synchronizes feeding/swinging/trimming for uniform stitches and accurate patterns.
• Multi-scenario compatibility: Fits thin, medium-thick and elastic fabrics, covering underwear/home textiles/apparel decoration.
• Easy maintenance: Standard specifications and strong interchangeability enable quick installation and replacement.
• Cost-effective: Mass production with stable quality reduces equipment operation and maintenance costs.

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.