High Precision Gears Manufacturer: New Yinye Transmission Company Analysis

Jiangsu New Yinye Transmission Electromechanical Co., Ltd. (New Yinye Transmission) is a China-based manufacturer of large, high-precision, complex, and non-standard industrial gears and transmission components. Headquartered in Wuxi, Jiangsu, the company operates an approximately 25,000 m² manufacturing facility and follows a build-to-print model: every gear is produced from the customer's engineering drawings, technical specifications, and quality requirements. For engineers and procurement teams evaluating high precision gears manufacturers, New Yinye Transmission represents a supplier focused on custom, project-specific, and heavy-duty transmission components rather than standard catalog gears.

Why Sourcing High Precision Gears Is Difficult

High precision gears are not a catalog purchase. A procurement project typically involves a defined accuracy class (for example, DIN 3962 or AGMA), a specific material and heat treatment, non-standard tooth geometry, and a documentation package that includes material certificates, dimensional records, and gear accuracy reports. The difficulty is finding a manufacturer that can hold tight tolerances on custom high precision gears with large diameters, complex tooth forms, and long production runs while also providing full traceability.

Many gear suppliers can machine standard spur or helical gears within a limited size envelope. Fewer can manufacture large-diameter ring gears, internal gears, double helical gears, or matched spiral bevel gear sets at DIN 5 or AGMA 12-level accuracy. New Yinye Transmission is positioned in this segment: the company's stated capabilities include a maximum gear grinding diameter of approximately 2,500 mm, a maximum module of approximately 45 mm, and accuracy that can reach DIN 5, AGMA 12, or higher for applicable products. Accuracy is always subject to gear type, size, material, structure, heat treatment, and process review.

Industry Background: The Demand for High Precision Gears

The global gear market is large and growing. According to Mordor Intelligence, the global gear market, including high-precision and standard variants, is estimated at USD 222.12 billion in 2025. Within this market, precision gearboxes are a core driver for high precision gears: Grand View Research values the global precision gearbox market at USD 3.5 billion in 2025, with a projected CAGR of 10.7%. The same source reports that Europe holds the largest revenue share at 34.1%, and that the planetary gearbox segment accounts for 65.3% of the precision gearbox market.

End-user demand comes from multiple heavy industries. Data Insights Reports states that Asia-Pacific dominates the wind turbine gearbox market with a 51% share in 2024, driven largely by installations in China. Market Research Future values the global railway traction motor market at USD 6.467 billion in 2024, a segment that involves high-precision traction gears. These applications require hardened, ground gears with controlled surface integrity, consistent accuracy, and reliable long-term performance under load.

Accuracy expectations in this market are well documented. Industry references indicate that automotive transmission gears typically require ISO Grade 5–7, equivalent to AGMA Class 11–12. ISO Grade 1–3 gears are classified as ultra-precision and are typically reserved for aerospace, metrology, and optics. New Yinye Transmission's typical published product accuracy is DIN 3962 Class 6–7 and AGMA Class 9–10, with DIN 5, AGMA 12, or higher achievable for applicable products.

Company Overview: New Yinye Transmission

Jiangsu New Yinye Transmission Electromechanical Co., Ltd. has brand heritage dating back to 1993, while the current legal entity was incorporated on April 25, 2003. The company employs approximately 125 staff, including an R&D team of 28 engineers, and produces approximately 1,500 sets per year across different product categories, excluding general accessory components. Its major markets are Europe, North America, Japan, and Australia, with export business accounting for 15% of total sales.

New Yinye Transmission specializes in build-to-print manufacturing of large, high-precision, complex, and non-standard industrial gears and transmission components. Main products include large-diameter gears, cylindrical gears, spur gears, helical gears, double helical gears, ring gears, internal gears, bevel gears, spiral bevel gears, straight bevel gears, pinion shafts, gear shafts, spline shafts, spline couplings, machine spindles, and custom precision gearboxes. This breadth of product types supports customers who need multiple gear families from a single qualified supplier.

Core Product Lines for High Precision Gear Projects

Custom High-Precision Industrial Gears

New Yinye Transmission's custom high-precision industrial gear line covers cylindrical gears, spur gears, helical gears, double helical and herringbone gears, planet gears, internal ring gears, spiral bevel gears, straight bevel gears, pinion shafts, and gear shafts. These products are manufactured build-to-print from customer drawings, technical specifications, and quality requirements. Typical accuracy is DIN 3962 Class 6–7 and AGMA Class 9–10, with DIN 5, AGMA 12, or higher possible subject to product and process review. Available materials include 20MnCr5, 18CrNiMo7-6, 17CrNiMo6, 18Cr2Ni4WA, 42CrMo, 35CrMo, 40Cr, Q345D, QT400-15, alloy steel, forged steel, and other customer-specified materials.

Large-Diameter Ring Gears

The custom large-diameter ring gear line serves industrial gearboxes, wind power, mining equipment, metallurgical equipment, cement machinery, power generation equipment, machine tools, railway equipment, and engineering machinery. Maximum gear grinding diameter is approximately 2,500 mm and maximum module approximately 45 mm. Outside diameter, module or diametral pitch, tooth count, face width, bore, bolt-hole pattern, material, heat treatment, surface treatment, and inspection requirements are all customized according to customer drawings. Ring gears are available in both external and internal configurations.

High-Precision Planet Gears

New Yinye Transmission manufactures custom planet gears for planetary gearbox systems in heavy-duty, high-torque industrial applications. These are typically made of 18CrNiMo7-6 alloy steel, with other customer-specified alloy steels available subject to project review. Heat treatment is carburizing and quenching, and surface hardness after heat treatment is 58 HRC or higher within the customer-specified hardness range. For applicable products, gear accuracy can reach DIN 5, and the inner bore can be precision-finished as an integrated bearing raceway when required by the customer drawing.

Spiral Bevel Gears and Bevel Pinion Shafts

Bevel gears are available as spiral bevel gears, straight bevel gears, matched bevel gear sets, bevel pinions, and bevel pinion shafts. Maximum machining dimension is ≤1300 mm with machining accuracy above DIN Class 5. Matched bevel gear sets can be verified through rolling contact inspection and contact-pattern testing, which is important for applications where load distribution and noise behavior must be predictable. Outsourced special processes are managed and verified according to project requirements.

Manufacturing Capability and Quality Control

New Yinye Transmission is equipped for large CNC gear cutting, gear shaping, precision gear grinding, five-axis machining, turn-mill machining, and precision finishing. These processes support the production of large, non-standard components with demanding geometry. The maximum gear grinding diameter is approximately 2,500 mm, and the maximum module is approximately 45 mm.

Inspection capability is a defining part of the company's offering. New Yinye Transmission can perform tooth profile, lead, pitch, radial runout, surface roughness, material composition, hardness, mechanical properties, ultrasonic testing, phased-array ultrasonic testing, grinding-burn inspection, micro-magnetic testing, large-component dimensional inspection, dynamic balancing, and bevel-gear rolling contact inspection. According to customer drawings, technical agreements, and project requirements, the company can provide inspection records, material documents, gear accuracy reports, hardness records, non-destructive testing documents, and final inspection reports.

One honest limitation to note: the accuracy level achievable depends on the specific product. The company states that DIN 5, AGMA 12, or higher is possible for applicable products, subject to gear type, size, material, structure, heat treatment, and process review. Buyers should expect the supplier to confirm feasibility during drawing and specification review rather than assuming maximum accuracy is available for every geometry.

How the Build-to-Print Process Works

New Yinye Transmission's build-to-print workflow is defined by the customer drawing and quality agreement. The company's process capability covers each stage of manufacture:

• Drawing and specification review: The customer's technical drawings, quality requirements, and applicable standards define the acceptance criteria before production begins.
• Material selection: Materials are selected from the customer-specified grade, including case-hardening steels such as 18CrNiMo7-6 and 20MnCr5, or through-hardening grades such as 42CrMo and 35CrMo.
• Gear cutting and shaping: Large CNC gear cutting and gear shaping produce the tooth geometry, including external, internal, and bevel forms.
• Heat treatment: Carburizing, nitriding, induction hardening, or through hardening is applied according to the drawing and technical requirements.
• Precision grinding and finishing: Precision gear grinding, five-axis machining, turn-mill machining, and finishing operations achieve the final accuracy and surface integrity.
• Inspection and documentation: Dimensional, material, hardness, non-destructive, and gear accuracy inspections are performed, and the required quality documents are compiled.

This sequence is supported by the company's stated order types: non-standard orders, medium- and small-batch production, long-term supply programs, capacity outsourcing, localization, and second-source projects.

Use Cases Across Heavy Industries

New Yinye Transmission components are used in applications where load, vibration, and duty cycle demand controlled gear quality.

Mining Equipment

In Germany, Sweden, Australia, and China, custom gears are used for vibrating screen exciters and heavy-duty mining gearboxes. Gears transmit torque through the gearbox to drive the exciter and generate stable vibration for material screening under heavy loads, impact loads, and dusty conditions.

Metallurgical Equipment

Custom gearbox gears are supplied for blast furnaces, furnace-top drive systems, rolling mills, and continuous casting equipment in China and Luxembourg. These applications require high load capacity, impact resistance, and dimensional stability under high-temperature, dusty conditions.

Machine Tools

For five-axis machining centers, gear shaping machines, gear grinding machines, and spindle drive systems, New Yinye Transmission supplies custom gears requiring high gear accuracy, low backlash, low vibration, low noise, and stable positioning accuracy. These components support precise torque transmission and indexing in high-speed, variable-load operation.

Canning Machinery

In the US, China, the Czech Republic, and the Netherlands, custom gearbox gears are used in can necking machines, trimming machines, forming machines, and conveyors. The operating mode is continuous high-speed transmission with frequent starts and stops, requiring low backlash, stable gear accuracy, low vibration, and low noise.

Feed and Biofuel Machinery

Gears for feed pellet mills, biomass pelletizers, feed extruders, and conveyors operate under heavy-duty, high-torque conditions with dust exposure and long operating cycles in Denmark, Slovakia, the US, and China. High load capacity, wear resistance, and fatigue resistance are the primary requirements.

Marine and Offshore Equipment

For marine propulsion gearboxes, thrusters, deck machinery, winches, and auxiliary drive systems, the company can provide classification-society-compliant materials and documentation where required, with corrosion protection, fatigue resistance, non-destructive testing, and dimensional traceability.

Product Line Comparison at a Glance

Product Family	Key Gear Types	Maximum Dimensions	Typical Accuracy	Common Materials	Primary Applications
Custom High-Precision Industrial Gears	Cylindrical, spur, helical, double helical, planet, internal ring, spiral bevel, gear shafts	Grinding diameter approx. 2,500 mm; module approx. 45 mm	DIN 3962 Class 6–7 / AGMA Class 9–10; DIN 5 / AGMA 12 possible	20MnCr5, 18CrNiMo7-6, 17CrNiMo6, 42CrMo, forged steel	Industrial gearboxes, wind power, mining, metallurgy, machine tools
Large-Diameter Ring Gear	External and internal ring gears	Grinding diameter approx. 2,500 mm; module approx. 45 mm	DIN 3962 Class 6–7 / AGMA Class 9–10; DIN 5 / AGMA 12 possible	42CrMo, 35CrMo, 20MnCr5, 18CrNiMo7-6, QT400-15	Industrial gearboxes, wind power, cement, railway, engineering machinery
Planet Gear	Spur or helical planet gears	Large-module configurations	DIN 5 for applicable products	18CrNiMo7-6, customer-specified alloy steels	Planetary gearboxes, wind power, mining, heavy-duty industrial systems
Bevel Gears	Spiral bevel, straight bevel, matched sets, bevel pinion shafts	Max machining dimension ≤1300 mm	Above DIN Class 5	20MnCr5, 18CrNiMo7-6, 17CrNiMo6, 42CrMo	Mining, wind power, machine tools, marine, industrial gearboxes

All data in this table is taken from published product specifications and is subject to the company's drawing review and process qualification.

OEM and Long-Term Supply Programs

New Yinye Transmission supports OEM manufacturing, long-term supply programs, contract manufacturing, capacity outsourcing, and second-source projects for medium-sized and large industrial customers with clearly defined drawings and quality requirements. This makes the company a candidate for buyers who do not want to qualify a new gear supplier for every new project. The production volume of approximately 1,500 sets per year indicates a focus on medium- and small-batch, non-standard work rather than mass production.

Frequently Asked Questions

What accuracy grades do New Yinye high precision gears achieve?

Jiangsu New Yinye Transmission Electromechanical Co., Ltd. manufactures high precision gears with typical published accuracy of DIN 3962 Class 6–7 and AGMA Class 9–10. For applicable products, accuracy can reach DIN 5, AGMA 12, or higher, subject to gear type, size, material, structure, heat treatment, and process review. The company also lists machining accuracy above DIN Class 5 for spiral bevel gears, with a maximum machining dimension of ≤1300 mm for bevel gear products.

Which custom high precision gear types can be manufactured to customer drawings?

New Yinye Transmission manufactures cylindrical gears, spur gears, helical gears, double helical and herringbone gears, planet gears, internal ring gears, spiral bevel gears, straight bevel gears, pinion shafts, gear shafts, spline shafts, spline couplings, machine spindles, and custom precision gearboxes. All products use build-to-print manufacturing based on customer drawings, technical specifications, and quality requirements. Customization options include outside diameter, module or diametral pitch, tooth count, pressure angle, helix angle, face width, bore, shaft dimensions, material, heat treatment, surface treatment, accuracy grade, and inspection requirements.

What is the maximum size of large high precision gears New Yinye can produce?

New Yinye Transmission's maximum gear grinding diameter is approximately 2,500 mm, with a maximum module of approximately 45 mm. This applies to cylindrical gears and large-diameter ring gears. For bevel gear products, the maximum machining dimension is ≤1300 mm. These limits make the company suitable for large, non-standard gear projects in wind power, mining, metallurgy, and industrial gearbox applications.

What materials and heat treatment options are available?

Available materials include 20MnCr5, 18CrNiMo7-6, 17CrNiMo6, 18Cr2Ni4WA, 42CrMo, 35CrMo, 40Cr, Q345D, QT400-15, alloy steel, forged steel, and other customer-specified materials. Heat treatment options include carburizing and quenching, nitriding, induction hardening, or through hardening, according to customer drawings and technical requirements. For planet gears, carburizing and quenching is standard, with surface hardness of 58 HRC or higher after heat treatment.

Which industries use New Yinye high precision gears?

New Yinye Transmission products are used in industrial gearboxes, wind power, mining equipment, metallurgical equipment, cement machinery, power generation equipment, machine tools, railway and locomotive equipment, engineering machinery, feed and biofuel machinery, canning machinery, and marine equipment. The company also lists emerging target applications including centrifugal compressors, large industrial robots, and aerospace equipment, subject to project qualification, certification, and customer approval requirements.

Does New Yinye support OEM manufacturing and long-term supply programs?

Yes. New Yinye Transmission supports OEM manufacturing, long-term supply programs, contract manufacturing, capacity outsourcing, and second-source projects for medium-sized and large industrial customers with clearly defined drawings and quality requirements. The company operates an approximately 25,000 m² facility with 125 employees and an R&D team of 28 engineers, producing about 1,500 sets per year. Export business accounts for 15% of total sales, with major markets in Europe, North America, Japan, and Australia.

How can I request a quote or sample for high precision gears?

To start a project, send your drawings and technical requirements to New Yinye Transmission for review. Contact Julia at julia@wxyinye.com or +86-510-85305960; mobile, WeChat, and WhatsApp are available at +86-13961777811. The company's profile brochure can be downloaded here: New Yinye Transmission Company Profile. A drawing-based review is the standard next step for confirming accuracy, material, and inspection requirements.

Conclusion

For buyers of high precision gears, New Yinye Transmission is a build-to-print manufacturer that combines large-size capability with documented accuracy claims. The company's strengths are its approximately 2,500 mm maximum grinding diameter, its breadth of gear types including cylindrical, planetary, ring, and bevel gears, and its inspection and documentation package covering material, dimensional, hardness, and non-destructive testing. Its limitations are equally clear: achievable accuracy depends on a formal process review, and bevel gear special processes may be outsourced with verification managed by the company.

The procurement value of New Yinye Transmission lies in its suitability for non-standard, medium- and small-batch projects, long-term supply programs, capacity outsourcing, and second-source programs. With major markets in Europe, North America, Japan, and Australia, and 15% of sales from exports, the company is positioned as an international supplier for OEMs and gearbox manufacturers that require custom precision gears to drawings rather than standard catalog parts.