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Precision Transmission Components for Industry

Zhejiang Yayisai Machinery Co., Ltd. delivers high-quality sprockets, pulleys, gears, and bushings for metallurgy, mining, shipbuilding, elevators, aviation, and more. Trusted globally for durability and precision.

Factory Equipment Production Line Quality Inspection

About YAYISAI

Zhejiang Yayisai Machinery Co., Ltd. is located in the Industrial Park, Shengzhou, Zhejiang, with convenient access to Shangsan Expressway and National Road 104. Our factory combines modern infrastructure with advanced manufacturing and quality control systems to deliver reliable transmission components worldwide.

We focus on scientific management and advanced manufacturing technology, providing a wide variety of transmission parts for industries including metallurgy, mining, shipbuilding, elevators, aviation, electric power, oil, automotive, and logistics.

100+
Production Machines
50+
Testing Instruments
Factory Interior

What We Do

We provide standard transmission components across multiple industrial categories. For specialized needs, our custom manufacturing service ensures precision-engineered non-standard parts tailored to your exact specifications.

Standard Products

High-precision sprockets, pulleys, gears, and bushings manufactured to international standards. Ideal for immediate integration into existing systems.

Custom Non-Standard Parts

Our core strength lies in custom design and production. Share your drawings or requirements, and we’ll deliver engineered solutions with fast turnaround.

Our Products

Explore our comprehensive range of transmission components designed for durability, precision, and performance across diverse industrial applications.

Roller Chain Sprockets

Roller Chain Sprockets

Standard and custom sprockets for roller chains. Available in multiple tooth counts and bore sizes.

Idler Sprockets

Idler Sprockets

Designed for smooth chain guidance and tensioning in conveyor and drive systems.

Engineering Class Sprockets

Engineering Class Sprockets

Heavy-duty sprockets built for extreme loads and harsh environments.

Made-to-Order Sprockets

Made-to-Order Sprockets

Fully customizable sprockets based on your technical drawings and specifications.

QD Pulleys

QD Pulleys

Quick-detach pulleys for easy installation and maintenance in belt drive systems.

Taper Bushed Pulleys

Taper Bushed Pulleys

Secure fit with taper lock bushings. Ideal for high-torque applications.

Spur Gears

Spur Gears

Parallel-axis gears with straight teeth. High efficiency and load capacity.

Bevel Gears

Bevel Gears

Transmit motion between intersecting shafts. Precision-cut for smooth operation.

Worm Gears

Worm Gears

High reduction ratios in compact designs. Self-locking capability for safety.

QD Bushings

QD Bushings

Quick-detach bushings for easy mounting and removal of pulleys and sprockets.

Variable Pitch Pulleys

Variable Pitch Pulleys

Adjustable pitch for variable speed drives. Smooth performance under load.

Miter Gears

Miter Gears

Bevel gears with equal teeth and shaft angles. Used for 90° power transmission.

Why Choose Yayisai?

Quality Assurance

Equipped with 50+ testing instruments including hardness depth detectors, tooth profile projectors, and metallographic analyzers.

Advanced Manufacturing

100+ CNC machines including machining centers, lathes, milling machines, and hobbing equipment ensure precision and consistency.

Customization Expertise

Specialized in non-standard parts. Share your design, and we’ll manufacture it with precision and speed.

Industries We Serve

Our transmission components are trusted across a wide range of industrial sectors for their reliability and performance.

Mining Industry
Metallurgy
Shipbuilding
Agricultural
Printing
Escalator
Aviation
Automotive

Get in Touch

For inquiries about standard or custom transmission components, reach out to us directly through our official website.

Email
Phone / WhatsApp
+86 18605887263
Location
Shengzhou, Zhejiang, China

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