Punctual Support
98% On-Time Delivery & 24/7 Tech Support
Quality Assurance
1-Year Warranty & Free Test Report
Manufacturing
IATF 16949:2016-Compliant Production
High Volume
Capacity: Up to 1,250,000 pcs per month
Helical Gears For Heavy Truck Gearboxes
Helical gears for heavy truck gearboxes and high torque transmissions. Heat treat options and inspection reports. Share drawings for a fast quote!
Description
Specifications
| Item | Specification | Tipical | Notes |
|---|---|---|---|
| Gear Type | Helical Gear | — | — |
| Module (m) | 1 – 5 | 2 – 4 | As drawing |
| Pressure Angle | 15 – 25° | 20° | As drawing |
| Precision Grade | ISO 1328 6–8 / AGMA 8–10 | ISO 7-8 | As drawing |
| Materials | 20CrMnTi / 20CrMo / 40Cr / 40CrMo / 45#steel / Others | 20CrMnTi | As drawing |
| Heat Treatment | Carburized & Quenched / Q&T / Nitrided | Carburized | As drawing |
| Hardness | Carburized & Quenched:Tooth HRC 58–62
High-frequency Quenched:HRC 45–55 Nitrided:Tooth HV 650–1300 |
Carburized & Quenched:Tooth HRC 58–62
High-frequency Quenched:HRC 48–52 Nitrided:Tooth HV 700–1100 |
As drawing |
| Surface Finish | Black Oxide Coating / Electroplating / Phosphate Coating / Passivation | Black Oxide Coating / Electroplating | As drawing |
| Process | Broaching / Grinding / Hobbing / Shaping / Shaving / Milling / Forging | Grinding / Shaping | As drawing |
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Wenlio Machining Service
Broaching
Extensive inventory of broaches in various sizes and shapes, making us the ideal choice for urgent order.
Grinding
These services include ID/OD, gear or spline, thread, jig or surface grinding.
Hobbing
With over 10,000 hobs in stock, we likely already have the tooling available for your custom order.
EDM -Wire and Ram
Especially well suited for operations requiring high accuarracy and low-count quick-turnaround part runs.
Laser cutting
Producing for small batches, thin-plate gears (typically <20mm), non-standard gears.
Shaping
Shaping capacities range from 0 to 40″ diameter, and pitches from 1 to 1000.
Shaving
Constructed with a heavy-duty frame for stability and often features automated loading systems.
milling
4th axis capabilities, hold tolerances within .0002″ linear and 10 arc second rotary repeatability.
Quality Control
Prior to every shipment, we conduct the following tests and provide complete quality reports for these gears.:
1. Bubble drawing
2. Dimension measurement report
3. Material certification report
4. Heat treatment testing report
5. Accuracy measurement report
Bubble Drawing
Material Certification Report
Dimension Measurement Report
Accuracy Measurement Report
Accuracy Measurement Report
Heat Treatment Testing Report
Packaging
Step 1 – Anti-rust: We wrap each gear with VCI anti-corrosion paper / bag to protect it from rust during shipping.
Step 2 – Inner protection: The wrapped parts are placed properly to avoid scratches and impact.
Step 3 – Carton packing: Then we pack them into strong export cartons (logo printing is available).
Step 4 – Crate & pallet: Cartons are loaded into a reinforced plywood crate with partitions, and fixed on a pallet.
Step 5 – Secure & label: The crate is sealed, strapped, and labeled, ready for sea/air shipment.
We can also provide custom printed color boxes and logo customization (carton, color box, crate marking, labels).
Note: Please ensure the logo/design is authorized by you; if it involves any third-party brand, we will need written authorization to avoid IP risks.
FAQ
Do you manufacture helical gears for heavy truck gearboxes?
We support OEM and aftermarket programs with drawing review, prototyping, quality traceability, and repeatable production for ongoing supply.
Can you produce to drawing and required accuracy grade?
For an accurate quotation, please share drawings (preferred), gear type, key interface dimensions (bore/spline/keyway), material requirements, target quantity, and your application basics (load/speed/duty). If you don’t have full data,you can also directly send the samples to us.
What heat treatment options are typical for truck transmission gears?
Heat treatment is selected based on torque and life targets. If you have required surface hardness and core properties, provide them; otherwise we can suggest a suitable route for quotation.
Do you supply single gears or complete gear sets?
Both. For replacements, we often ask about the mating gear condition and whether you can provide the mating part for fit validation to reduce assembly risk.
What information is essential in an RFQ for truck gearbox gears?
Ratio, torque, speed, duty cycle, material, heat treatment targets, helix angle details, bore/spline interface, and quantity. Photos of the assembly layout help clarify constraints.
What inspection evidence can you provide for incoming QC or PPAP-style needs?
We can provide dimensional and tooth measurement evidence, hardness checks, and other records as requested. Share your documentation list early so we can plan the inspection package correctly.
Contact us to get a dedicated and personalized offer
Company
Wenlio Gear
Email: sales@wenlio.com
WhastsApp:
+8618257981010
Address
Building 13-2, Zhixin Park, Xianhua South Street, Wucheng, Jinhua, Zhejiang
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