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CNC Timing Pulleys

-- Steady & Reliable Manufacturer --

High-Precision Industrial Planetary Gear Components for Heavy-Duty Torque Transmission

At Xierge Precision Machinery Co., Ltd., we leverage over 30 years of operational experience since 1990 to manufacture premium Industrial Planetary Gear Components for the automotive, robotics, and heavy industrial machinery sectors. Planetary gear systems—including sun gears, planet gears, ring gears, and planetary carriers—require exceptional torque density, extreme geometric precision, and flawless tooth profiles to distribute load evenly across multiple meshing points. Even a microscopic deviation in pitch or concentricity can lead to severe noise, excessive backlash, and premature fatigue failure under high-torque conditions.

To achieve flawless results, our state-of-the-art facility is equipped with Japanese imported Star CNC Swiss-type lathes, advanced 4-axis CNC machining centers, and precision gear grinding machines. This specialized equipment allows us to machine complex gear geometries, internal splines, and carrier bores in a single setup, ensuring absolute concentricity and eliminating secondary clamping errors. The guide bushing technology on our Swiss lathes provides unparalleled support for machining long, slender sun gears and pinion shafts.

Following our core principle of "Integrity Oriented, Quality Foremost," we strictly adopt premium raw materials such as 20CrMnTi, 42CrMo, and 17-4PH stainless steel. To guarantee reliable product performance, we apply strict quality inspection protocols utilizing a complete set of testing instruments imported directly from Japan and Germany. We keep innovating to maintain sound business development and warmly welcome domestic and overseas clients to visit our factory and explore custom OEM/ODM cooperation opportunities.

Industrial Planetary Gear Components Technical Specifications

Component Types Sun Gears, Planet Gears, Internal Ring Gears, Planetary Carriers, Gear Shafts
Primary Equipment Star CNC Swiss-type Lathes, 4-axis CNC Machining Centers, Gear Hobbing & Grinding Machines
Precision Grade ISO Grade 4-7 (DIN 3960), AGMA Q11-Q13
Module / Pitch Range Module 1.0M to 6.0M; DP (Diametral Pitch) 4 to 24
Geometric Tolerances Concentricity: 0.003mm; True Position (Carrier Bores): 0.005mm
Common Materials 20CrMnTi, 42CrMo, 17-4PH Stainless Steel, 8620H Alloy Steel
Heat Treatment Carburizing & Quenching, Nitriding (Up to HRC 58-62 on tooth surface)
Surface Roughness (Ra) Hobbed Teeth: Ra 0.8; Ground Teeth & Bearing Journals: Ra 0.2 - Ra 0.4
Inspection Equipment German/Japanese Gear Measuring Centers, CMM, Roundness Testers, Hardness Testers

Core Advantages of Xierge Industrial Planetary Gear Components

  • Ultra-Precision Tooth Grinding: We utilize advanced CNC gear grinding machines to achieve AGMA Q11+ precision, ensuring minimal backlash and smooth load sharing across multiple planet gears.
  • Single-Setup Multi-Axis Machining: Our Japanese Star CNC Swiss-type lathes allow us to turn, hob splines, and drill cross-holes on sun gears in one operation, maintaining extreme concentricity.
  • High-Torque Material Mastery: We have mature processing parameters for high-strength alloy steels like 20CrMnTi and 42CrMo, ensuring superior fatigue resistance for heavy-duty industrial applications.
  • Complex Planetary Carrier Machining: Our 4-axis CNC machining centers enable precise multi-axis milling of planetary carriers, maintaining tight true position tolerances (0.005mm) between planet gear bores.
  • Advanced Thermal Deformation Control: We meticulously manage carburizing and quenching processes, utilizing precision grinding post-treatment to correct any micro-warping and restore exact gear tolerances.
  • World-Class Gear Metrology: Our quality lab is equipped with imported German and Japanese gear measuring centers to precisely verify pitch deviation, tooth profile, and helix accuracy.
  • 3-Decade OEM/ODM Expertise: Since 1990, we have continuously innovated, collaborating closely with clients to optimize DFM (Design for Manufacturing) for custom planetary gear sets from prototyping to mass production.

Payment Methods & Global Logistics Solutions

Secure International Payment Terms:

To facilitate smooth B2B international trade, we offer flexible and secure payment options. For mass production orders of industrial planetary gear components, we accept standard T/T (Telegraphic Transfer) with a 30% advance deposit and 70% balance before shipment. For large-scale automotive or industrial supply contracts, we are fully capable of processing Irrevocable Letters of Credit (L/C) at sight. For initial prototyping, sample orders, or custom tooling fees, PayPal and Western Union are also available to expedite the process.

Global Logistics & Protective Packaging:

We provide comprehensive end-to-end shipping solutions under FOB, CIF, and DAP Incoterms. For urgent prototypes or small batches, we utilize expedited international couriers such as DHL, FedEx, and UPS. For bulk mass production, we offer highly competitive sea freight (LCL/FCL) and air cargo rates through our trusted global forwarder network. Recognizing that planetary gear components have delicate tooth profiles and precise bores highly susceptible to impact and oxidation, we utilize specialized packaging: each gear is individually wrapped in VCI (Volatile Corrosion Inhibitor) anti-rust paper, secured in custom EPE foam slots to prevent contact, and packed in sturdy export-grade wooden pallets to ensure zero deformation and tooth damage during international transit.

Flexible Payment Terms for High-Value Materials

Given the volatile market price and high intrinsic value of titanium raw materials, orders for CNC Titanium Timing Pulleys typically require a 50% down payment (T/T advance) to secure material procurement and initiate the production schedule. This standard B2B practice allows us to lock in material costs and prioritize your slot in our production line. For long-term partners and bulk orders of standard materials like Steel or Aluminum, we are open to discussing more flexible terms. We ensure all transactions are transparent, secure, and compliant with international trade regulations.

Reinforced Packaging & Global Logistics

Titanium CNC Timing Pulleys are high-precision, high-value components that demand superior protection during transit. We go beyond standard packaging to ensure your products arrive in perfect condition:

  • Customized Reinforced Packaging: To prevent deformation or damage to the precise tooth profiles and surface finish, each timing pulley is individually wrapped with anti-rust paper and foam. We utilize heavy-duty, shock-absorbent export cartons or custom wooden crates, ensuring the parts withstand the rigors of long-haul international shipping.
  • Premium Global Delivery: We provide worldwide delivery solutions tailored to your urgency. For samples and urgent orders of titanium pulleys, we partner with premium couriers like UPS, FedEx, and DHL, providing full tracking visibility from our factory to your doorstep.
  • Secure Transit: For large-volume shipments, we coordinate reliable air or sea freight services with insurance options, guaranteeing the safety of your high-value investment throughout the journey.

FAQ

1. How do you ensure even load distribution among the planet gears in an assembly?

Even load distribution requires extreme precision in pitch deviation and tooth spacing. We achieve this by utilizing CNC gear grinding to reach AGMA Q11+ precision. Additionally, we maintain strict true position tolerances (within 0.005mm) on the planet gear bores of the planetary carrier, ensuring all planet gears mesh simultaneously and share the torque equally.

2. How do you control thermal deformation when carburizing internal ring gears?

Internal ring gears are prone to out-of-round distortion during heat treatment. We mitigate this by using specialized fixed fixtures during the carburizing and quenching process. After heat treatment, we employ internal gear grinding or honing machines to correct the micro-deformation, restoring the exact involute profile and ensuring a tight interference fit with the housing.

3. Can you machine complex multi-axis planetary carriers with asymmetrical bores?

Yes. Our advanced 4-axis and 5-axis CNC machining centers are fully capable of machining complex planetary carriers. We utilize custom fixturing and precision boring tools to maintain absolute true position between asymmetrical planet gear bores, ensuring smooth assembly and preventing gear binding.

4. What materials and heat treatments do you recommend for high-torque industrial robot reducers?

For industrial robot reducers requiring high torque density and zero backlash, we highly recommend 20CrMnTi or 8620H alloy steel. After precision carburizing and quenching to HRC 58-62, we perform CNC gear grinding. This provides a hard, wear-resistant tooth surface with a tough core, essential for high-cycle robotic applications.

5. How do you inspect the helix and profile deviation of ground planetary gears?

We utilize imported German and Japanese gear measuring centers (GMC). These advanced instruments physically trace the gear tooth surfaces to map the involute profile, helix deviation, and cumulative pitch error. This ensures every gear meets strict ISO Grade 4-7 standards required for high-speed planetary transmissions.

6. How do you ensure no metal chips are trapped in the internal splines of ring gears before packaging?

Trapped chips in internal splines can severely damage mating components. After machining and deburring, all ring gears pass through our dedicated industrial ultrasonic cleaning machines. This high-frequency agitation, combined with high-pressure flushing, removes 100% of micro-burrs and cutting debris from internal tooth roots before the parts are oiled and sealed.

Xierge Precision Machinery Co.,Ltd.
Xierge Precision Machinery Co., Ltd.

Our company was established in 1990, with over 30 years of operational experience.
We specialize in the production of precision and general hardware parts, supplying supporting components for the automotive, machinery, medical, home appliance, and other industries.
We are well-equipped with Japanese imported Star CNC Swiss-type lathes, domestic CNC lathes, machining centers, grinders, cleaning machines, and other production equipment. Our complete set of testing instruments is imported from Japan and Germany. Drawing on more than 30 years of expertise, we operate with integrity, keep innovating, and maintain sound business development.
Following the principle of Integrity Oriented, Quality Foremost, we adopt premium raw materials and apply strict quality inspection to ensure reliable product performance.
We warmly welcome domestic and overseas clients to visit our factory and explore cooperation opportunities.

Contact Us
Certificates We’Re An Approved
Innovative Company
  • IATF 16949:2016
  • GB/T 19001-2016/ISO 9001:2015
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