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SHACMAN Air Suspension System Torsion Spring Assembly DZ97259520232 DZ9X259520231
Internal Components
1. Ball-joint / Rubber Bushing: Part numbers such as DZ95259520014 / DZ95259520672. Vulcanized within the metal housings at both ends of the rod, these utilize high-density, high-elasticity natural rubber. Their critical function is to allow for flexible, three-dimensional torsional movement (at specific angles) of the rubber ball-joint as the axle moves vertically, thereby preventing rigid impacts from fracturing the rod.
2. Ball-joint Sleeve (Bushing Sleeve): Part number such as DZ9X259520021. A high-hardness steel sleeve designed for press-fitting and secure mounting within the bracket on the vehicle frame.
Key Functions
In a tractor unit featuring a full air suspension system, the air springs serve solely to support the load and provide cushioning; the longitudinal and lateral positioning of the axle, as well as torsional rigidity, are entirely managed by the leaf-spring-style torsion bar assembly.
1. Structural Anti-Roll: When the truck corners at high speeds or traverses uneven terrain, the leaf-style torsion bars undergo torsional deformation, acting as a stabilizer bar to prevent the vehicle from rolling.
2. Handling Braking and Driving Forces: High-strength spring steel strips (leaf bars) directly connect the axle to the air spring brackets on the chassis, transmitting longitudinal thrust and reaction forces between the tires and the road surface.
3. Internal Components: High-rigidity rubber spherical bushings (or spherical joint sleeves) are typically press-fitted into both ends of the assembly; these absorb minor vibrations from the road and allow the suspension to twist freely within a specific angular range.
Air Suspension Torsion Spring Overhaul BOM (Bill of Materials) - SHACMAN (Per Axle)
| Item | Part Name | Core SHACMAN OEM Part No. | Functional Description | Unit | Qty / Axle | Recommended Replacement Reason & Notes |
|---|---|---|---|---|---|---|
| 01 | Torsion Spring Assembly (97 Platform) | DZ97259520232 | Main guide arm / stabilizer bar body, responsible for longitudinal axle positioning and anti-roll control. | Pcs | 2 | Core replacement component. For F3000/X3000. Replace if the leaf spring steel suffers fatigue cracking or end damage. |
| 01-Alt | Torsion Spring Assembly (X6000) | DZ9X259520231 | Specialized rear suspension torsion spring dedicated to the high-end SHACMAN X6000 flagship models. | Pcs | 2 | Core replacement component. For X6000. Choose either Item 01 or 01-Alt based on the exact truck model. |
| 02 | Torsion Spring Rubber Bushing / Spherical Joint | DZ95259520014 (or DZ95259520672) |
Precision metal-rubber joint pressed into the ends of the torsion spring to absorb 3D suspension articulation. | Pcs | 4 (Spare) | Already pre-installed in the genuine assembly (01). Only source separately if rebuilding the old arm; the original complete assembly has a longer lifespan. |
| 03 | Hexagon Flange Fine-Thread Bolt | 06.02202.1013 (Spec: M20 × 2 × 75) |
Grade 10.9 high-strength anti-shear bolt used to anchor both ends of the torsion spring to the brackets. | Pcs | 4 | Mandatory Replacement. Bolts in heavy-duty areas suffer severe fatigue and stretching from cyclic impacts. Never reuse them, as they will easily snap. |
| 04 | All-Metal Hexagon Locking Nut | 06.11151.2707 (M20×2) | Grade 10 high-strength self-locking nut, paired with the bolt above for secure fastening. | Pcs | 4 | Mandatory Replacement. The locking mechanism/deformed threads lose effectiveness once removed, making them highly prone to loosening due to vibration. |
| 05 | High-Hardness Thickened Flat Washer | 06.15014.1517 (Spec: 20) | Reduces local stress concentration during torquing, protecting the torsion spring bracket mounting holes. | Pcs | 4 | Replace alongside the bolts to prevent the original washer from bowing/cupping under long-term high clamping forces. |
| 06 | Torsion Spring Support Plate / Block | DZ97259520233 | Heavy-duty iron clamping block located between the torsion spring and the axle interface. | Pcs | 2 | Subject to condition. Inspect contact surfaces for severe wear or cracking; can usually be cleaned and reused during an overhaul. |
| 07 | Torque Rod Bushing (Transverse/V-Rod) | DZ93259520050 | Rubber bushing for the lateral V-stay torque rod or transverse panhard rod in the air suspension setup. | Pcs | 2 ~ 4 | Highly Recommended to check concurrently. Torsion spring failure often coincides with excessive chassis roll. Inspect all adjacent rod bushings. |
DETAILS
| DESCRIPTION | Torsion Spring Assembly | PART NUMBER | DZ97259520232 DZ9X259520231 |
| WEIGHT | 30kg | VOLUME | 65 cm × 25 cm × 20 cm |
| TRUCK MOLDE | SHACMAN | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | CHASSIS |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
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