High Load Capacity Running Boards

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Technical Overview

High load capacity running boards are engineered using reinforced, extra-thick steel mounting brackets that interface with multiple anchor points on the vehicle's frame or unibody. The linkage system is constructed from forged, high-yield aluminum or heavy-gauge Q345B steel to resist bending and torsional forces. These steps are certified to support a static load exceeding 450 kg (depending on model), accommodating multiple large occupants simultaneously.

The platform itself is a wide, internally-webbed extrusion designed to resist vertical deflection. All structural welds are performed using robotic, certified processes to ensure maximum joint strength and consistency.

Introduction

For large vehicles, multi-passenger vans, or utility trucks that demand uncompromising strength, high load capacity running boards are the definitive choice. They eliminate concerns about structural integrity, providing a stable, reliable access point for any user or scenario. This is a system built for absolute durability and performance under stress.

BHTC's experience in heavy-duty manufacturing is fully utilized in this segment. We focus on materials and design geometries that maximize strength-to-weight ratio, ensuring the steps can handle rigorous, real-world demands over many years.

Applications

Large Crew Vehicles: Essential for accessing the cabin of full-size trucks or vans where multiple passengers step on simultaneously.
Heavy Utility and Commercial Use: Used by service technicians who may stand on the step for extended periods while accessing roof racks or cargo.
Security/Armored Vehicles: Provides a robust standing platform for security personnel.
Full-Size SUVs (Prestige Market): Meets the high load rating expected by owners of premium, large-platform vehicles.

Specification

Certified Static Load	450 kg (Model Dependent Maximum)
Linkage Material	Forged Aluminum or Heavy-Gauge Q345B Steel
Mounting Method	Multi-Point Reinforced Frame/Chassis Bolt-On
Platform Rigidity	<3 mm Deflection at Max Load Center Point
Welding Standard	Robotic, Certified Full Penetration Welds
Cycle Testing	Stress Tested to 150,000 Cycles at 150 kg Load
Corrosion Finish	Industrial E-Coat and Thick Powder Coat

Common Questions

Q: Are the electric motors strong enough to deploy the heavy-duty linkage?
A: Yes. The motors used in this line are specifically high-torque units designed to handle the additional weight and friction of the reinforced linkage components, ensuring deployment speed is maintained.

Q: Does the high load rating require special installation methods?
A: Installation still utilizes factory bolt points, but the supplied brackets are larger and require more fasteners, often including specialized backing plates or reinforcement bars to properly distribute the force across the vehicle frame.

Q: What kind of testing confirms the load rating?
A: We conduct both static load testing (simulating a parked vehicle) up to 450 kg and dynamic testing (simulating stepping on/off) at 150 kg for over 150,000 cycles to verify long-term structural integrity.

Core Features

Exceptional Load Bearing: Engineering focuses on transferring weight efficiently to the vehicle frame, ensuring a safe and stable 450 kg static capacity.
Torsional Resistance: The robust geometry of the linkage minimizes twisting and lateral movement, providing a solid, confidence-inspiring feel underfoot.
Long-Term Durability: Over-specified components and certified welds translate directly into a long operational life, even under constant heavy stress.
Minimal Platform Flex: Internal webbing and thick material on the platform extrusion ensure the step remains flat and rigid under heavy, concentrated weight.

Production & Customization Services

Production includes Non-Destructive Testing (NDT) of critical welds using ultrasonic or magnetic particle inspection to guarantee joint strength. Assemblies are subjected to Load Cycling Rigs to simulate long-term fatigue.

Customization Opportunities:

Custom Frame Adapters: Designing and producing unique mounting brackets to fit specific, heavy-duty commercial truck frame rail configurations.
Dual-Level Step: Manufacturing a specialized platform that deploys to two different heights for complex commercial loading/access requirements.
Certification Support: Providing documentation and samples required for specific client-initiated third-party load certifications.

Material Selection Guide

For the strongest option, we utilize Forged 6061 or 7075 Aluminum for the load arms due to its density and high yield strength after forging, or Q345B Steel for budget-optimized, high-strength solutions.

The platform relies on a Wide Extruded Aluminum Profile with the highest possible ratio of internal cross-section webbing to external surface area for anti-deflection.

All pivot points utilize Heavy-Duty Bronze or Oversized Roller Bearings to handle constant shear forces without premature wear.

about Bohai

R&D and manufacturing of mid-to-high-end SUV electric pedals.

Bohai Automotive Technology (Zhejiang Huzhou) Co., Ltd. was established in 2014. It is a technology-based enterprise specializing in R&D China High Load Capacity Running Boards Manufacturers and Wholesale High Load Capacity Running Boards Suppliers The company is located on the southern bank of the beautiful Taihu Lake in the hinterland of the Yangtze River Golden Triangle-Changxing County, Huzhou City, Zhejiang Province. It is about 150 kilometers away from Shanghai, Hangzhou, Nanjing, Ningbo, Suzhou, Wuxi and other large and medium cities.

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