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Trailer Parts
| Attribute | Description |
|---|---|
| Product Name | Planetary Gear Differential |
| Common Names | Planetary Diff, Epicyclic Differential, Axle Reduction Unit |
| Function | Distributes engine torque between wheels/axles; allows speed differentiation |
| Core Mechanism | Sun gear, planet gears (3–6), planet carrier, ring gear (internal teeth) |
| Application | Heavy-duty trucks, trailers, mining trucks, military vehicles, off-road machinery |
| Mounting Type | Inboard (within axle housing) or hub-mounted (hub reduction) |
| Gear Material | Alloy steel (e.g., 20CrMnTi, 42CrMo), carburized & hardened |
| Heat Treatment | Carburizing, quenching, tempering for surface hardness and core toughness |
| Lubrication System | Oil bath or forced lubrication (via axle lube system) |
| Operating Temperature | -40°C to +150°C |
| Standard Compliance | ISO 9001, SAE J615, DIN 743, GB/T 3480, API GL-5 compatible |
| Sealing Type | Double-lip oil seals with anti-leak design |
| Parameter | Specification |
|---|---|
| Model Number | PD-MERITOR-DRA140 |
| Type | Planetary Final Drive (Double Reduction) |
| Gear Ratio (Final Drive) | 3.7:1 to 5.9:1 (configurable per model) |
| Max Input Torque | Up to 25,000 N·m |
| Output Torque Capacity | Up to 60,000 N·m (after reduction) |
| Number of Planet Gears | 4 or 6 (symmetrically arranged) |
| Sun Gear Teeth | 16–20 |
| Planet Gear Teeth | 18–22 |
| Ring Gear (Internal) Teeth | 52–68 |
| Gear Module | 5–8 mm |
| Hardness (Surface) | HRC 58–62 (case-hardened) |
| Bearing Support | Tapered roller bearings (high-load capacity) |
| Lubricant Required | API GL-5 80W-90 or 85W-140 gear oil |
| Weight (approx.) | 85–110 kg (varies by axle integration) |
| Approvals | Meets Meritor MSA140 spec, E-marked, ISO 9001 certified |
| Attribute | Description |
|---|---|
| Product Name | Planetary Gear Differential |
| Common Names | Planetary Diff, Epicyclic Differential, Axle Reduction Unit |
| Function | Distributes engine torque between wheels/axles; allows speed differentiation |
| Core Mechanism | Sun gear, planet gears (3–6), planet carrier, ring gear (internal teeth) |
| Application | Heavy-duty trucks, trailers, mining trucks, military vehicles, off-road machinery |
| Mounting Type | Inboard (within axle housing) or hub-mounted (hub reduction) |
| Gear Material | Alloy steel (e.g., 20CrMnTi, 42CrMo), carburized & hardened |
| Heat Treatment | Carburizing, quenching, tempering for surface hardness and core toughness |
| Lubrication System | Oil bath or forced lubrication (via axle lube system) |
| Operating Temperature | -40°C to +150°C |
| Standard Compliance | ISO 9001, SAE J615, DIN 743, GB/T 3480, API GL-5 compatible |
| Sealing Type | Double-lip oil seals with anti-leak design |
| Parameter | Specification |
|---|---|
| Model Number | PD-MERITOR-DRA140 |
| Type | Planetary Final Drive (Double Reduction) |
| Gear Ratio (Final Drive) | 3.7:1 to 5.9:1 (configurable per model) |
| Max Input Torque | Up to 25,000 N·m |
| Output Torque Capacity | Up to 60,000 N·m (after reduction) |
| Number of Planet Gears | 4 or 6 (symmetrically arranged) |
| Sun Gear Teeth | 16–20 |
| Planet Gear Teeth | 18–22 |
| Ring Gear (Internal) Teeth | 52–68 |
| Gear Module | 5–8 mm |
| Hardness (Surface) | HRC 58–62 (case-hardened) |
| Bearing Support | Tapered roller bearings (high-load capacity) |
| Lubricant Required | API GL-5 80W-90 or 85W-140 gear oil |
| Weight (approx.) | 85–110 kg (varies by axle integration) |
| Approvals | Meets Meritor MSA140 spec, E-marked, ISO 9001 certified |