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Factory Wholesale for XCMG High Quality Steel Parts Includes 87029010077A Tongli Mine Truck Handle Axle Chassis Leaf Springs

The Part No. 87029010077A is a Heavy-Duty Front Leaf Spring Assembly manufactured by Shaanxi Tonly (Tongli) for use on off-highway mining dump trucks operating under extreme load and terrain conditions. Designed specifically for 35–40 ton front axle applications, this leaf spring serves as the primary suspension component supporting the front end of large-capacity articulated dumpers such as the TL875, TL855, TL859, and TL88 series.

As a core structural element in the vehicle’s front suspension system, it provides critical load-bearing capacity, shock absorption, and ride stability while enduring continuous stress from rough mine roads, heavy payloads, and frequent start-stop cycles. Featuring a multi-leaf reinforced design with high-strength spring steel and precision-calibrated arch height, this unit ensures optimal ground clearance, wheel alignment, and durability in one of the most demanding environments in commercial transport.
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  • 87029010077A

  • Tonly Mining Dump Trucks

Attribute Specification
Part Number 87029010077A
Alternative Numbers 87029010077 (earlier version), 87029010077A-1 (main leaf only), HD90149520115 (Hande reference)
Component Name Front Multi-Leaf Spring Assembly (Heavy-Duty Mining Grade)
Axle Position Front Suspension – Load Support & Articulation
Load Rating 35–40 Ton Class
Vehicle Application Off-Highway Mine Dump Trucks / Wide-Body Articulated Dumpers
Typical Models Tonly TL875, TL855, TL859, TL88 Series; Zoomlion, LGMG equivalents
Number of Leaves 13 or 14 pieces (thick-section, variable or uniform cross-section design)
Main Material High-Strength Spring Steel: 60Si2Mn or 50CrV
Surface Treatment Shot-Peened for Fatigue Resistance + Protective Coating
End Type Eyes with Press-Fitted Bushings (Bronze or Composite)
Free Arch Height Precisely calibrated to maintain ride height under full load
Weight (per side) 180 kg – 210 kg
前钢板-1
前钢板-2


Parameter Value / Detail
Yield Strength ≥ 1,200 MPa (after heat treatment)
Tensile Strength 1,400 – 1,600 MPa
Fatigue Life (Simulated) >200,000 cycles under dynamic loading (mining duty profile)
Elastic Modulus ~206 GPa
Bushings Bronze-backed PTFE composite or solid bronze liner, low-friction, wear-resistant
Center Bolt Diameter Typically Φ16–Φ20 mm (high-tensile grade)
Spring Rate (Approx.) 350–450 N/mm (varies based on stack configuration)
Deflection at Rated Load 120–160 mm
Operating Temperature Range -40°C to +120°C
Corrosion Resistance Industrial-grade paint coating; recommend additional grease protection in wet/salty environments


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