Main Drive Gearbox
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This page explains how Helical/Bevel Gears is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
Gear components in a main drive gearbox that transmit power and motion between non-parallel shafts.
Technical details and manufacturing context for Helical/Bevel Gears
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Module | 1–12 mm | Determines tooth size; standard ranges for industrial gearboxes.ISO 54 |
| Number of Teeth | 12–120 | Affects gear ratio and size. |
| Pressure Angle | 20 ° | Standard for most gears; 14.5° or 25° for special applications.ISO 53 |
| Helix Angle | 15–30 ° | For helical gears; affects axial thrust and smoothness. |
| Shaft Angle | 90 ° | Typical for bevel gears; can be other angles. |
| Gear Ratio | 1–5 | Single stage; higher ratios may require multiple stages. |
| Accuracy Grade | 6–8 | Higher grade for high-speed or precision applications.ISO 1328 |
| Surface Hardness | 58–62 HRC | Case-hardened steel; lower for through-hardened.ISO 6336 |
| Core Hardness | 30–40 HRC | Ensures toughness; lower for softer materials.ISO 6336 |
| Maximum Torque | 100–5000 N·m | Depends on size and material; for industrial gearboxes. |
| Maximum Rotational Speed | 3000–6000 rpm | Limited by pitch line velocity and lubrication. |
| Operating Temperature | -20–80 °C | For standard lubricants; higher with synthetic oils. |
| Material Grade | 20CrMnTi | Case-hardening steel; alternatives: 17CrNiMo6, 42CrMo4.GB/T 3077 |
| Weight | 5–200 kg | Depends on size and material; for typical gearbox gears. |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
Commonly used trade names and technical identifiers for Helical/Bevel Gears.
This component is essential for the following industrial systems and equipment:
| pressure: | Up to 500 MPa contact pressure |
| other spec: | Maximum input speed: 10,000 RPM, Lubrication required: ISO VG 68-320 |
| temperature: | -40°C to 150°C |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
8 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.
A practical evidence checklist for RFQ preparation and supplier evaluation.
CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.
According to the directory, these gears are commonly made from alloy steel, case-hardened steel, or carburized steel. The material grade listed is 20CrMnTi per GB/T 3077, but alternatives like 17CrNiMo6 or 42CrMo4 may be used. Always confirm the specific material with the manufacturer.
The gear ratio for single-stage helical and bevel gears typically ranges from 1 to 5. Higher ratios may require multiple stages. The exact ratio depends on the application and must be verified with the supplier.
The maximum torque range is 100–5000 N·m, and the maximum rotational speed is 3000–6000 rpm. These values are for industrial gearboxes and are limited by factors such as pitch line velocity and lubrication. Confirm the actual limits for your specific model.
Relevant standards include ISO 54 for module, ISO 53 for pressure angle, ISO 1328 for accuracy grade, and ISO 6336 for hardness. The material grade standard is GB/T 3077. These standards serve as verification references; compliance must be confirmed with the manufacturer.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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