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Views: 0 Author: Site Editor Publish Time: 01-30-2026 Origin: Site
In the front axle suspension system of Mercedes-Benz Trucks, the leaf spring carries the core tasks of load bearing, guidance, and impact resistance. The leaf spring bushing (Mercedes truck leaf spring bushing) is the “buffer joint” at the connection points between the leaf spring and the axle/frame. Its function is not simply “being installed,” but directly affects vehicle stability and ride comfort under heavy-load road conditions.
Connects the leaf spring to the axle / frame: The bushing is typically installed at the leaf spring eye end or connection points, allowing controlled movement and positioning under load.
Absorbs road impact and vibration: The rubber elastomer attenuates high-frequency vibration and transient impacts, reducing vibration transmitted to the frame and cab.
Reduces metal-to-metal contact and wear: Rubber isolation and steel-sleeve structure prevent hard metal contact that causes bore wear and increasing clearance.
Ensures front axle stability under heavy-load conditions: In long-haul logistics, heavy-duty transport, and other high-load/high-fatigue scenarios, the bushing’s shear and fatigue resistance determines the stability ceiling of front axle positioning and steering response.
For purchasing and maintenance professionals, leaf spring bushings are not merely “low-cost consumables,” but key components affecting NVH, tire wear, steering drift, and suspension life.
The commonly used OE number for this part is: 6733200050 (it may appear with spaces or hyphens in different systems, but the core digits remain the same). For searching and RFQs, it is recommended to use the combined keyword:
“6733200050 + leaf spring bushing + Mercedes truck” to improve matching efficiency.
The front axle leaf spring connection point is subjected to combined loads: cyclic shear + compression + torsion:
Braking/acceleration generates longitudinal shock loads
Steering and uneven roads generate lateral shear
Heavy loads and potholes generate compression and rebound fatigue
Therefore, a front axle leaf spring bushing requires higher standards in dimensional accuracy, bonding strength, and rubber compound stability.
Heavy-duty transport: high load, long distance, obvious heat build-up
Long-haul logistics: high-speed operation is more sensitive to stability and tire wear
Construction/engineering transport: unpaved roads, stronger impacts, heavier mud/water corrosion
Installation Position: Front Axle
Position: Front Axle Leaf Spring
Inner Diameter (ID): 17 mm
Outer Diameter (OD): 54 mm
Length: 96 mm
For leaf spring bushings, “it fits” does not mean “it fits correctly.”
ID deviation affects the fit clearance with bolts/pins, leading to noise and accelerated wear.
OD deviation affects press-fit interference: insufficient interference causes looseness; excessive interference may induce rubber pre-damage.
Length deviation changes clamping position and load path, causing misload, debonding, and early cracking.
In Google searches and technical communication, it is recommended to use: 6733200050 front axle leaf spring bushing 17mm 54mm 96mm to quickly lock the correct specification.
Rubber-metal leaf spring bushings commonly adopt a “steel–rubber–steel” composite structure:
Inner steel sleeve: provides assembly positioning and clamping support
Outer steel sleeve: carries press-fit interference and external positioning
Rubber elastomer: provides energy absorption, vibration isolation, rebound, and shear resistance
Hebei Huami can select compound systems according to service conditions:
NR (Natural Rubber): excellent elasticity and fatigue performance; suitable for load-bearing dynamic conditions
NBR (Nitrile Rubber): stronger oil resistance; suitable for oily environments or higher oil exposure risk
EPDM: outstanding weather and ozone resistance; suitable for wide temperature ranges and stronger outdoor exposure
Shore A hardness is not “the higher the better,” and typically falls within a reasonable range for balance:
Too low: improved comfort but easier deformation and reduced positioning stability
Too high: stronger positioning but higher vibration transmission and increased stress concentration
Final selection should consider fleet load, road conditions, and maintenance strategy.
Metal anti-corrosion treatment: such as phosphating, zinc plating, or other rust-prevention systems to improve salt spray and mud/water durability
Vulcanization bonding process: insufficient bonding strength causes debonding, voiding, and noise; stable bonding is crucial for consistent service life
When a Mercedes truck leaf spring bushing enters its failure stage, typical signals include:
Front axle noise and increased vibration: “clunk” sounds over bumps or during acceleration/braking
Steering drift and abnormal tire wear: alignment changes cause uneven wear
Loose leaf spring connection: increased clearance with noticeable looseness at the joint
Rubber aging, cracking, debonding: surface checking, tearing, or separation from sleeves
How to judge replacement: persistent noise + visible cracks/debonding + abnormal joint clearance usually indicates priority inspection and replacement
Removal and press-fit notes: use proper tooling; avoid hammering that deforms sleeves or causes rubber shear damage
Centered installation to avoid rubber pre-stress: press-fit must be coaxial; misalignment leads to early cracking and debonding risk
Bolt torque (placeholder): Torque: ____ N·m (refer to the vehicle service manual)
Regular inspection suggestion: heavy-duty/construction fleets should shorten inspection intervals, focusing on front axle joint noise and bushing cracks
How to extend service life: keep joints clean, avoid long-term misload, tighten to specified torque, and recheck periodically
As a rubber metal leaf spring bushing supplier, Hebei Huami emphasizes “verifiable stability and consistency” for heavy-duty rubber-metal components:
30 years of experience in rubber products and rubber-metal parts manufacturing
Serving Mercedes truck and multiple heavy-duty truck brands for OE and aftermarket needs
IATF 16949, TÜV, and AEO Advanced Certification-backed systems
In-house rubber compound R&D capability: targeted optimization for heavy-load, fatigue resistance, and weather resistance
Precision tooling and automated production: improved dimensional consistency and stable delivery
Full-process quality inspection: hardness / tensile / tear / compression set / bonding strength
Durability validation: fatigue life, salt spray, oil resistance, weather resistance, high/low temperature tests
OEM/ODM support, small-batch customization, stable lead time: drawings/samples and parameter customization, convenient for distributors and fleets
Neutral packing + low MOQ: ideal for overseas distributors’ stocking, repair shops’ fast-moving spares, and fleets’ phased purchasing—lower trial barriers and faster validation cycles
| Item | Specification / Description |
|---|---|
| OEM No. | 6733200050 |
| Product Name | Mercedes-Benz Truck Leaf Spring Bushing |
| Inner Diameter (ID) | 17 mm |
| Outer Diameter (OD) | 54 mm |
| Length | 96 mm |
| Installation Position | Front Axle Leaf Spring / Front Axle |
| Applicable Vehicles | Mercedes-Benz Trucks (exact models/years subject to actual installation) |
| Material & Hardness | NR / NBR / EPDM (Shore A: ____ , customizable by duty) |
| Packaging | Neutral Packing |
| MOQ | Low MOQ (small-batch trial supported) |
Q1: What is 6733200050?
A: It is a Mercedes truck leaf spring bushing used in the front axle leaf spring system, designed to connect and cushion the load-bearing joints between the leaf spring and the axle/frame.
Q2: How do I confirm it is the Front Axle version?
A: Check the installation position (Front Axle Leaf Spring) and match the dimensions: ID 17mm, OD 54mm, Length 96mm, then cross-verify with OEM 6733200050.
Q3: Which dimension matters most—17/54/96mm?
A: All are critical. ID affects pin fit, OD affects press-fit interference, and length affects clamping and load path. Any deviation may cause noise or shortened service life.
Q4: What symptoms appear when a leaf spring bushing fails?
A: Typical signs include front axle noise, increased vibration, steering drift, uneven tire wear, loose joints, and visible rubber cracking or debonding.
Q5: Why does early debonding or cracking happen?
A: Often due to mismatched compound selection, unstable bonding/vulcanization, off-center press fitting that creates pre-stress, and heavy impacts or corrosive environments.
Q6: How should I choose between NR, NBR, and EPDM?
A: NR is commonly chosen for dynamic fatigue and elasticity, NBR for oil-contaminated environments, and EPDM for strong weather/ozone resistance. Final choice should follow duty conditions and validation.
Q7: What are the most common installation mistakes?
A: Non-coaxial press fitting, hammering that deforms sleeves, installing with rubber pre-stress, and not tightening bolts to the service-manual torque.
Q8: What are the benefits of neutral packing for distributors?
A: Neutral packing is suitable for overseas distributors and workshops managing private labeling or unified warehousing, reducing packaging customization barriers and improving stocking speed.
Q9: What does low MOQ mean in practice?
A: Low MOQ supports small-batch trials for distributors, repair shops, and fleets, reducing inventory pressure and enabling faster validation.
Q10: What information is needed for a quick quotation?
A: Provide OEM 6733200050, installation position (Front Axle), dimensions (17/54/96mm), vehicle/model-year info if available, required quantity, and target market requirements.
