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SITRAK C7H/G7G AC16 AC16 Heavy-duty Drive Axle brake drum AH71981550220
It employs a central-wheel-side dual-stage transmission structure, featuring a central single-stage reduction combined with wheel-side planetary gear reduction. The main reducer is responsible for the initial torque amplification, while the wheel-side reducer handles the secondary torque amplification. The ingenuity of this design lies in significantly reducing the torsional load on the half-shafts, thereby minimizing the risk of torsional fracture or premature fatigue failure in the main reducer's ring gear and the half-shafts.
Structural & Load-Bearing Parameters (Basic Geometric Features)
| Parameter Name | Technical Specifications / Descriptions | Core Value & Application |
|---|---|---|
| Rated Axle Load | 16,000 kg (16-Ton Class) | Prescribed load limit; the heavy-duty cast steel design can handle extreme vertical impacts up to 20 tons. |
| Housing Construction | Monoblock Special Cast Steel Housing | Eliminates weld-seam risks and prevents deformation under sudden heavy vertical impacts during cargo dumping. |
| Main Reducer Type | Central Single-Stage Spiral Bevel Gear Reduction | Performs the initial torque multiplication and changes the power transmission direction by 90°. |
| Hub Reduction Type | Planetary Gear Hub Reduction | Performs secondary torque multiplication, distributing the shaft-end load across 5 planetary gears. |
| Axle Configuration | Fully Floating | The axle shaft transmits torque only; the vehicle weight is fully borne by the rigid axle housing |
Drivetrain & Performance Parameters (Gearing & Traction)
| Parameter Name | Technical Specifications / Descriptions | Core Value & Application |
|---|---|---|
| Common Final Drive Ratios | 4.77 / 5.26 / 5.73 / 6.73 | Mining vehicles and heavy-duty dump trucks prioritize large ratios like 5.73 or 6.73. |
| Differential Lock Spec | Inter-Wheel Lock + Inter-Axle Lock | Pneumatically controlled to ensure 100% vehicle recovery and traction on muddy or slippery mining slopes. |
| Max Input Torque | \(\ge \) 45,000 N·m | Perfectly matches high-torque engines in the 400-540 hp range (e.g., Weichai WP12 / Sinotruk MC11). |
| Compatible Tire Sizes | 12.00R20 / 14.00R20 / 12.00R24 | Fits large-diameter steel radial tires to increase ground clearance and off-road passability. |
Braking & Safety Parameters (Brake Drum Relations)
| Parameter Name | Technical Specifications / Descriptions | Core Value & Application |
|---|---|---|
| Compatible Brake Drum P/N | AH71981550220 | Features bimetallic steel-ring cast iron composite technology to prevent thermal cracking. |
| Brake Inner Diameter | \(\Phi \) 410 mm | Large-diameter design provides exceptionally high braking torque. |
| Brake Lining Width | 220 mm (Widened Design) | Increases heat dissipation area and braking efficiency by over 20% compared to standard highway trucks (180mm). |
| Brake Chamber Type | 24/30" or 30/30" Dual Air Chamber Spring Brake | Ensures the spring firmly locks the wheel hubs during pressure loss or emergency parking. |
| Brake Adjustment Type | Automatic Slack Adjuster (Standard) | Automatically compensates for brake lining wear, eliminating manual adjustment and enhancing safety |
Maintenance, Lubrication & Weight Parameters (Logistics & After-sales)
| Parameter Name | Technical Specifications / Descriptions | Core Value & Application |
|---|---|---|
| Total Axle Assembly Weight | Approx. 920 kg – 980 kg (Excl. dual tires) | Heavy industrial axle; international logistics billing will treat it as approximately 1 metric ton. |
| Main Reducer Oil Capacity | Approx. 13.5 L – 15 L | Uses 85W-90 / 80W-90 GL-5 heavy-duty vehicle gear oil. |
| Hub Reducer Oil Capacity | Approx. 2.5 L – 3.0 L / per side | Independent hub lubrication; requires regular oil changes via the hub oil fill plug. |
| Oil Change Interval | Initial: 2,000-5,000 km; Routine: 30,000-50,000 km | Recommended to shorten intervals in harsh mining environments to prevent metal shavings from causing abrasive wear |
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