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Views: 0 Author: Site Editor Publish Time: 09-16-2025 Origin: Site
Meta description (≤155):Procurement guide for heavy truck rubber mounts—NBR/EPDM, 5–40 kN, −40–120 °C, IATF 16949, custom options, 15–25-day lead time.
Top view of heavy-duty laminated rubber mount with steel plates
Side view showing stacked rubber layers and base plate bolt holes
Close-up of rubber–metal bonding lines on heavy truck mount
OEM sourcing managers and fleet maintenance leads looking to specify or replace heavy truck rubber mounts (engine, cab, transmission, radiator, auxiliaries) with verified durability, clear specs, and fast delivery.
· 30+ years manufacturing heavy-duty rubber-metal mounts
· IATF 16949 automotive quality & AEO customs certification
· High-durability compounds and tuned NVH performance
· Customization (load, hardness, geometry, bolt pattern)
· Lead time: 15–25 days from order confirmation
Rubber-metal mounts isolate vibration and shock between the truck’s frame and components (engine, transmission, cab). They combine a rubber spring + damping in compression/shear with steel plates or housings. Properly tuned mounts reduce NVH (noise, vibration, harshness), protect components, and improve driver comfort and uptime.
Parameter | Value / Range | Notes |
Material | NBR or EPDM | Shore A 60–80 selectable |
Static load per mount | 5–40 kN (≈ 1,124–8,992 lbf) | Size per position & safety factor |
Operating temperature | −40 to 120 °C (−40 to 248 °F) | Short peaks by agreement |
Salt spray resistance | ≥240 h | ASTM B117 or equivalent |
Rubber–metal adhesion | ≥ X N/mm (≥ 5.7 X lbf/in) | Meet project-specific target |
NVH tuning | Natural frequency & damping tailored | Fleet-specific duty cycles |
Mounting | Stud/through-bolt, limiters, rebound stops | Custom bolt patterns |
Use case | Choose | Why |
Powertrain (engine/transmission), oil/diesel exposure | NBR | Excellent mineral-oil & fuel resistance |
Cab/chassis, outdoor weathering & ozone | EPDM | Superior ozone, UV, and heat-aging resistance |
Mixed environments | NBR core + coated metalwork / EPDM options | Balance of oil splash and weathering |
· Quality proof – IATF 16949 process control, PPAP, traceability, and adhesion testing on every batch.
· Durability in the field – compounds and bonding designed for long life under high compression/shear and shock loads.
· NVH results – mounts tuned to avoid resonance with 1× / 2× engine orders and road inputs; transmissibility targets agreed up front.
· Logistics – AEO certification streamlines export; 15–25-day production supports program timelines.
· Mounting orientation & function: compression, shear, or combo; need for rebound/overload limiters.
· Static load per mount (kN / lbf) and safety factor (commonly 1.5–2.5).
· Dynamic/impact loads and duty cycle (potholes, off-road, curb strikes).
· Target NVH: acceptable natural frequency and transmissibility; avoid overlap with engine orders.
· Rubber hardness (Shore A 60–80) and material (NBR vs. EPDM) based on fluids/ozone exposure.
· Temperature window (continuous & peak) and environment (oil, diesel, DEF, road salt, ozone).
· Geometry & envelope: height at installed deflection, lateral stiffness, bolt pattern and hole sizes.
· Corrosion protection for metal parts (e.g., zinc-nickel, e-coat, powder coating) and salt-spray target ≥240 h.
· Adhesion requirement (≥ X N/mm) and verification method; compression-set and fatigue targets.
· Commercials: expected volumes, packaging, labeling, lead time 15–25 days, and documentation (PPAP level, RoHS/REACH).
Symptom | Likely cause | Recommended action |
Excessive vibration in cab/steering | Mount too stiff/soft; resonance near engine order; hardness drift | Re-tune hardness & geometry; review natural frequency vs. excitation; replace aged mounts |
Clunking/metal-to-metal contact | Bottoming due to overload; missing limiters; incorrect installed height | Add/review limiters; increase load rating; reset installed height/shims |
Visible cracks in rubber | Over-strain, ozone/UV attack, low-temp embrittlement | Verify material choice (EPDM for ozone); check deflection; replace with correct rating |
Rubber swelling/softening | Fuel/oil/DEF exposure incompatible with compound | Switch to NBR or add shields; inspect for leaks |
Debonding from metal | Adhesion below spec; contamination during service; corrosion creep | Specify adhesion ≥ X N/mm; improve surface protection; replace mount |
Permanent set/sagging | Thermal aging or compression set | Increase hardness; select higher heat-resistant compound; verify temperature |
Corrosion on metal plates | Insufficient coating or chipped paint; road salt | Upgrade coating (e-coat/zinc-nickel); ensure ≥240 h salt-spray; renew parts |
Bolt loosening or shear | Incorrect torque; dynamic overload | Use thread-locker/prevailing-torque nuts; verify torque; re-rate mount |
Tilt/misalignment | Uneven load distribution; incorrect stack-up | Re-shim; check component weights and CG; match mount heights |
Squeak/creak noise | Slip at interfaces; dry bushings | Check torque at ride height; add isolating washers/bushings where needed |
· Hardness (ASTM D2240), Tensile/Elongation (ASTM D412), Compression Set (ASTM D395)
· Rubber–metal adhesion (e.g., ASTM D429 method) to project value ≥ X N/mm
· Neutral salt spray ≥240 h (ASTM B117) on coated metal parts
· Dynamic stiffness & NVH bench characterization; fatigue cycles to agreed profiles
· 100% visual + sample dimensional inspection; PPAP documentation upon request
· Install at ride height; torque fasteners after jounce/rebound cycling.
· Do not exceed specified installed deflection; use limiters for overload events.
· Shield mounts from continuous oil/fuel spray; replace any mount showing cracks, debonding, or permanent set.
· Application & position (engine front/rear, cab, etc.) and static/dynamic loads per mount
· Environment (fluids, temp), material & hardness target (e.g., NBR 70A)
· Envelope drawing or bolt pattern; required coatings
· Adhesion target (N/mm) and test method; salt-spray hours
· Annual volume/lot size; packaging/labeling; required documents (PPAP, RoHS/REACH)
· Delivery terms and timeline (15–25 days standard after approval)
Q: Can you match an existing OE part?
A: Yes—send samples or drawings; we reverse-engineer stiffness/geometry and validate with NVH tests.
Q: Can we tune mounts for specific NVH issues (idle boom, cab shake)?
A: Absolutely. We adjust hardness, shape factor, and damping to move the natural frequency away from excitation orders.
Q: Do you provide PPAP and 3D models?
A: Yes. PPAP (Level per request), material certs, and CAD are available for OEM projects.
Q: Which material should I choose?
A: Use NBR where oil/diesel exposure dominates. Use EPDM for ozone/UV and higher ambient heat. We’ll validate with lab aging.
Q: What is the lead time?
A: Standard production lead time is 15–25 days after approval.
