20CrMnTi Shoe Upper Lasting Machine Gears HRC 52–62 Gear In China

20CrMnTi Shoe Upper Lasting Machine Gears HRC 52–62 Gear In China

Shoe upper lasting machine gears are heavy-duty core transmission parts for shoe upper lasting machines (upper stitching/lockstitch machines), including spur gears, bevel gears, rack & pinion gears, feed gears, crankshaft gears and duplex gears. They fit single/double-needle, automatic lubrication, automatic thread trimming and dual-drive lasting machines. Made of 40Cr/42CrMo/20CrMnTi high-strength alloy steel with quenching & tempering + induction/carburizing hardening, they feature high torque, impact resistance, wear resistance, anti-chipping and adaptability to humid/dusty environments. They transmit power for the main shaft, feed rollers, lasting mechanism, trimming mechanism and toe-lasting mechanism, ensuring uniform stitches, stable tension and precise stitch length in upper/sole stitching. They are key vulnerable parts of shoe-making equipment.

Product Features

• High-torque heavy-duty design: Module 1.5–3.0mm, thickened tooth root and widened tooth width withstand 150–250N·m lasting torque without chipping or deformation.
• Reinforced rack & pinion: Induction-hardened + precision-ground tooth surfaces enable accurate rotary↔linear conversion with smooth feeding and no jamming.
• Impact & fatigue resistance: No tooth breakage during frequent start/stop/reverse (≤2000 times/day) for continuous shoe production.
• Wear resistance & long life: Tooth surface HRC 52–62 resists leather/rubber dust wear for ≥8000 hours service life.
• Harsh environment adaptability: Blackened/phosphated + anti-rust oil provides oil, moisture and dust resistance for humid/dusty workshops.
• Precise & quiet transmission: ISO Grade 7 precision and polished surfaces ensure 0.08–0.20mm meshing clearance, noise ≤68dB and neat stitches.
• Strong interchangeability: Fits Juki, Brother, Zoje, Hikari, Posse and mainstream Chinese lasting machines for easy replacement.
• Automatic lubrication compatible: Optimized tooth profile and oil grooves suit auto-lubrication systems with high resistance to low-oil/dry running.

Technical Parameter Table

Main Applications

• Main shaft and crankshaft gears for single/double-needle lasting machines.
• Rack & pinion gear sets for feeding mechanisms (core components).
• Bevel and spur gear sets for lasting claw/stretching mechanisms.
• Drive gears for automatic thread trimming and toe-lasting mechanisms.
• Upper/sole stitching equipment for sports shoes, casual shoes and safety shoes.
• Lockstitch machines for medium-thick materials like work gloves, wetsuits and fur fabrics.
• Complete transmission gears for automatic/semi-automatic shoe lasting machines.
• Replacement parts for old lasting machines (domestic/imported models).

Product Advantages

• High torque & anti-chipping: Thickened tooth roots + heavy-duty material withstand high shoe-making tension without fracture.
• Precise rack transmission: Precision-ground + hardened rack & pinion ensures smooth feeding, uniform stretching and neat stitches.
• Wear resistance & long life: HRC 52–62 tooth surfaces resist dust abrasion, reducing downtime for replacement.
• Stable in harsh conditions: Moisture, dust and oil resistance adapt to humid/dusty shoe workshops.
• Efficient & quiet transmission: Precise meshing + polishing reduce noise and vibration, improving workshop environment.
• Wide compatibility: Fits domestic/imported mainstream lasting machines, universal for medium-thick materials and smooth for thin materials.
• 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.