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YYC Standard Rack Series integrates a wide selection of modules, tooth profiles, materials, and precision grades, providing designers with flexible and ready-to-select motion solutions.
• Module range: M1 – M10
• Tooth profile: Straight, Helical
• Heat treatment: Laser hardened, Induction hardened
• Accuracy grade: DIN 5–10
• Material options: Medium carbon steel, Alloy steel
YYC racks are engineered to suit various motion systems with different load capacities, rigidity, and speed requirements, ensuring smooth operation, stable quality, and optimal transmission performance.
YYC Standard Pinion Series
The YYC Standard Pinion Series offers a comprehensive range of modules, tooth profiles, materials, and precision grades, delivering reliable performance and perfect compatibility with YYC racks. Each pinion is designed to provide precise motion control, smooth engagement, and long service life under demanding operating conditions.
• Module range: M1.5 – M10
• Tooth profile: Straight, Helical
• Mounting type: Keyway, Hub
• Accuracy grade: DIN 6
• Material options: Alloy steel, SCM440 / SCM415
• Heat treatment: Induction hardened or Carburized.
YYC pinions are optimized for various applications requiring high torque transmission, backlash control, and dynamic precision. With advanced machining and heat-treatment processes, YYC ensures consistent accuracy and smooth running in every rotation.
YYC’s felt lubrication pinions are precision-engineered components designed to provide automatic oil supply and lubrication for high-performance gear systems.
Product Features
•High oil absorption and retention: Ensures long-lasting lubrication without manual reapplication.
•Uniform oil distribution: Provides even and consistent lubrication on gear tooth contact surfaces.
•Rust and wear prevention: Maintains smooth, stable operation and reduces mechanical maintenance needs.
•Compact and durable design: Easily integrated into automatic lubrication or self-lubricating gear systems.
YYC Flange Pinion Series
The YYC Flange Pinion Series is designed for direct mounting and easy alignment with gearboxes / reducers, providing precise torque transmission and long-term stability. Each flange pinion is manufactured with high concentricity and optimized tooth contact, ensuring smooth and accurate engagement with YYC racks.
• Module range: M2 – M5
• Tooth profile: Helical, Left Hand Angle 19˚31’42”
• Mounting type: Integrated flange with bolt circle
• Accuracy grade: DIN 6
• Material options: Alloy steel (SCM440)
• Heat treatment: Induction hardened
YYC flange pinions are ideal for applications that require rigid coupling, compact installation, and precise positioning. With advanced grinding and hardening processes, YYC ensures excellent runout accuracy, high load capacity, and extended durability.
Application
YUAN YI CHANG MACHINE CO., LTD.
Founded in 1980, YYC Machinery is a leading Taiwanese manufacturer of precision racks and pinions, trusted by global OEMs for both standard and customized motion solutions. With over 45 years of gear manufacturing expertise and data, YYC has built a fully integrated and semi-automated production system, covering machining, heat treatment, grinding, inspection, and robotic packing, all supported by digital process control and traceability to ensure stable and repeatable accuracy.
YYC’s standard rack series meets DIN, JIS, and AGMA standards up to DIN 5 / JIS 1 precision, offering high performance and cost efficiency for CNC machine tools, automation systems, and robotic gantries. At the same time, YYC’s engineering team provides comprehensive customization — from material selection (S45C, S50C, SCM415, SCM440, SCNM220, bronze, POM plastic, and stainless steel) and heat-treatment control to profile accuracy optimization — serving both medium- and ultra-high-precision production projects.
Certified to ISO 9001 and ISO 14001, YYC upholds strict quality assurance and environmental responsibility.
Our core values guide everything we do:
• Humanity – We care for our people as family, fostering respect and partnership.
• Safety – Always our first priority in every operation.
• Quality – Never compromised; every part reflects our commitment to excellence.
• Affordability – Delivering premium precision with competitive value.
YYC stands for Precision, Flexibility, and Value — your trusted partner transforming motion into measurable performance worldwide.
Information
10.01
2025
YYC receives the 2025 Dun & Bradstreet Taiwan SME Elite Award, recognizing its innovation, reliability, and global leadership in precision manufacturing.
09.28
2025
YYC wrapped up EMO Hannover 2025 with global partners and looks ahead to Milan 2027, strengthening its presence and service network across Europe.
09.13
2025
YYC showcased precision rack and power transmission systems at FABTECH 2025, building new partnerships and strengthening its global network — see you in Las Vegas 2026.
09.22
2025
YYC showcases precision rack and pinion solutions at EMO Hannover 2025, empowering motion and automation industries worldwide.
09.14
2025
YYC presents high-precision racks, hardened pinions, and linear motion systems at EMO Hannover 2025, empowering the future of smart manufacturing.
09.02
2025
YYC presents advanced precision rack and guideway systems at FABTECH 2025, empowering global automation and machine tool innovation.
10.29
2025
To ensure stable, safe, and efficient rack and pinion operation, proper selection and precise calculation are essential.
10.28
2025
To measure the tooth thickness tolerance of a rack, an over-pin measurement method is used.
10.27
2025
During the assembly of racks and pinions, it is essential not only to confirm the mounting center distance but also to fully understand the geometric parameters of the rack.
