A semi-trailer suspension is an important part connecting the traveling device and the frame of the semi-trailer.
All forces are all transmitted through the suspension system. And the suspension reduces the impact of harsh roads on the vehicle, plays a shock absorption effect, and improves the ride comfort of the vehicle.
Semi-trailer suspensions are widely applied to skeletal trailers, lowbed trailers, flatbed trailers, dump trailers, car transport trailers, oil tank trailers, van trailers, full trailers, wood transport trailers, agricultrucal vehicles, etc. Classification of suspension indlude German series suspensions, American series suspensions, bogie/boogie suspension series, air suspension series, rigid suspension series, YORK suspensions, ROR suspensions, HENRED suspensions, semi-trailer suspensions, trailer suspensions and agricultural series, etc.
Air suspension refers to the suspension using air shock absorbers, mainly through the air pump to adjust the air volume and pressure of the air shock absorber, which can change the hardness and elastic coefficient of the air shock absorber. By adjusting the amount of air pumped in, the stroke and length of the air shock absorber can be adjusted, and the chassis can be raised or lowered. The air suspension system is a very advanced and practical configuration. It uses the increased rigidity of the enclosed gas in the air spring after being compressed, that is, as the air spring is continuously compressed, its stiffness gradually increases, and at the same time, the internal gas follows the air spring. Being compressed or elongated and pressed in or out, the air suspension system has close to ideal dynamic elastic characteristics. In a broad sense, air suspension is a suspension that uses air springs as elastic elements.
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| QC management system | Implementing IATF 16949-2016 |
| Services quality management system | Implementing ISO 9001-2015 |
| Warranty | 18 months since shipping date |
| Quality testing passed | An independent lab in China |
| Raw material for suspensions | Q235 from China's TOP-3 steel mills can achieve a longer life under higher loads |
| Steel plate cutting by | CNC Plasma Cutting Machines |
| Press forming by | 40-800 ton hydraulic press machines with hundreds of precision molds |
| Hanger welding by | Automatic CNC welding robots/lines with hundreds of precise fixture toolings |
| Smooth surface by | Shot-peening |
| Painting by | Automatic coating line |
| Producing leaf springs and casting parts by | Ourselves to ensure the lead time and quality are under control |
| Equalizer bushes | Using taper or greaseless powdered metal ones to be more durable |
| Arm bushes | Using natural rubber ones to be more durable |
| Adjustable arms screw by | Galvanized anti-rust treatment |
| Sets of annual output | 50,000+ |
| Overseas market | 30+ countries (Austraulia, Polland, Russia, Brazil, Mexico, Thailand, Malaysia, Singapore, Vietnam, The Philippines, Indonesia, Bolivia, Argentina, Chile, Peru, Guatemala, Panama, Egypt, South Africa, Nigeria, Tanzania, etc.) |
| Clients (overseas) | 100+ |
| Land area (square meters) | 18,000+ |
| Number of equipments (sets) | 200+ |
| Employees | 120+ |
| Engineers | 12+ |
| Available certificates | COC, PVOC, CIQ, SONCAP, C/O, FORM E, FORM A. |
Comprehensive Info of Suspensions:
| Suspension types | German series suspensions, American series suspensions, bogie/boogie suspension series, air suspension series, rigid suspension series, YORK suspensions, ROR suspensions, HENRED suspensions, semi-trailer suspensions, trailer suspensions and agricultural series, etc. |
| Interchangeable brands | BPW suspensions, FUWA suspension, YORK suspensions, ROR suspensions, HENRED suspensions. |
| Replacements | FW880201A, FW880202A, FW880203A, FW880201B, FW880202B, FW880203B, FW880301A, FW880302A, FW880303A, FW880301B, FW880302B, FW880303B, FW860201A, FW860202A, FW860203A, FW860201B, FW860202B, FW860203B, FW860301A, FW860302A, FW860303A, FW860301B, FW860302B, FW860303B, FW86.2/1310/250/BQ6/9, FW86.2/1360/250/BQ6/9, FW86.3/1310/250/BQ6/9, FW86.3/1360/250/BQ6/9. |
| Quantity of installed axles including | 1-axle suspensions, 2-axle suspensions, 3-axle suspensions, 4-axle suspensions, etc. |
| Position of installed axles including | Overslung & underslung suspensions |
| Type of installed axle beams including | Square & round axle beam suspensions |
| Hanger thickness | 6 mm, 8 mm, 10 mm |
| Equalizer thickness | 8 mm, 10 mm, 12 mm |
| Equalizer pin diameter | 50 mm, 60 mm, 70 mm |
| Axis (torque arm pin) diameter | 28 mm, 36 mm |
| Arm bushes | Natural rubber, composite bushings, urethane rubber, used rubber, etc. |
| Leaf springs | 90x16x7 leaves, 90x16x9 leaves, 100x16x10 leaves, 100x12x12 leaves, 100x12x14 leaves, 100x14x12 leaves, 75x13x8 leaves, 75x13x9 leaves, 75x14x8 leaves, 75x14x9 leaves, etc. |
| Colors | Red, black, grey, blue, etc. |
| Optional parts/components | Front hangers, rear hangers, center hangers, equalizers, equalizer pins, equalizer bushes, brackets, axle seats, axises, bushes, leaf springs, U-bolts, bolts, fixed arms, adjustable arms, hanger spacers, reinforcing plates, reinforcing brackets for equalizers, etc. |
| Package | * 30 sets~35 sets of suspensions with leaf springs in one 20 ft container; * 60 sets~70 sets of suspensions without leaf spring in one 20 ft container; * Mixed load with other trailer parts. |
| Standards implemented | IATF 16949-2016, ISO 9001-2015. |
| Payment | TT, LC, DP. |
| Lead time | About 10~15 working days |
| MOQ | 1 set |
Heavy Duty Air Suspension Series:
WONDEE Un-lifting Type Semi Trailer Air Suspension Series:
| Item No. | Capacity (Ton) | Beam (mm) | FH (mm) | Air bag (mm) | Inflation pressure (MP) | Width of two beam (mm) | Wheelbase (mm) | Weight (kg) |
| WAS-ST-1101 | 11 | Ф127 / □150 | 370∽550 | Ф320 | 0.7Max | 850∽1200 | 1270∽1400 | ≈235 |
| WAS-ST-1301 | 13 | Ф127 / □150 | 370∽550 | Ф360 | 0.7Max | 850∽1200 | 1300∽1400 | ≈245 |
WONDEE Lifting Type Semi Trailer Air Suspension Series:
| Item No. | Capacity (Ton) | Beam (mm) | FH (mm) | Air bag (mm) | Inflation pressure (MP) | Width of two beam (mm) | Wheelbase (mm) | Weight (kg) |
| WAS-ST-L1101 | 11 | Ф127 / □150 | 370∽550 | Ф320 | 0.7Max | 850∽1200 | 1270∽1400 | ≈265 |
| WAS-ST-L1301 | 13 | Ф127 / □150 | 370∽550 | Ф360 | 0.7Max | 850∽1200 | 1300∽1400 | ≈275 |
Workshops of WONDEE Autoparts semi trailer suspensions:
(Raw material workshops, Components workshops, Mechanical suspension processing workshops, Semi trailer suspensionAssembly workshops, Painting line)
Processes & equipment of WONDEE Autoparts semi trailer suspensions:
(1. Steel Plate Material→ 2. Steel Plate CNC Automatic Cutting→ 3. Hangers punching→ 4. Hangers Forming→ 5. Hangers Welding→ 6. Sleeve(A & B) Welding→ 7. Shot Peening→ 8. Painting→ 9. Laser marking→ 10. Assembling→ 11. Packing→ 12. Warehousing)
Products and logistics of WONDEE Autoparts semi trailer air suspensions:
Compared with the traditional leaf spring suspension system, air suspension has many advantages:
First, light weight. The biggest advantage of air suspension is its light weight, which is much lighter than traditional leaf spring suspension.
Second, it is convenient for loading and unloading. Through the manual height valve in the air suspension system, the height of the vehicle loading platform can be adjusted within a certain range to facilitate loading and unloading of goods.
Third, the driving is stable and the shock absorption performance is good. Compared with lightweight vehicles, vehicles with air suspension travel more smoothly.
Fourth, high security. The uniform distribution of the axle load and the balanced contact between the tire and the ground can improve the overall braking performance and turning stability of the axle. At the same time, the height of the air spring can be automatically adjusted according to the road conditions to reduce vibration and help protect the safety of goods.
Fifth, reduce maintenance costs. When the vehicle is running with no load, the air suspension can lift the axle, reduce tire wear, extend the service life, and reduce fuel consumption at the same time.
(Mechanical suspension final production, Suspension hangers, Components of semi trailer suspensions, Suspension warehousing, Suspension packing, trailer suspension container loading)
Other types of WONDEE Autoparts semi trailer suspensions:
(Germany BPW type mechanical suspension, Germany SAF type mechanical suspension, American FUWA type suspension with square beam, American FUWA underslung type suspension with square beam, American FUWA type suspension with round beam, American FUWA underslung type suspension with round beam)
Other types of WONDEE Autoparts semi trailer suspensions:
(YTE casting type suspension, ROR casting type suspension, Henred Fruehauf type suspension, Agricultural trailer suspension)
Components & spare parts of WONDEE Autoparts semi trailer suspensions:
(Font hangers, Middle hangers, Rear hangers, Supension equalizers, Equalizer pins, Leaf springs, Fix torques, Adjustable torques, U-bolts, etc.)
Besides trailer mechanical suspensions, WONDEE Autoparts also supply different types of semi trailer components as below: