Product Introduction

The 6243250112 Suspension Saddle Trunnion Seat is a key structural component in the rear tandem bogie suspension system of Mercedes-Benz SK series and Beiben NG80 heavy-duty trucks.

Mounted between the truck chassis frame and the balance shaft assembly, this component provides a stable support point for the balance shaft while allowing the equalizer beam to pivot smoothly during suspension movement. It helps distribute the vehicle load evenly between the tandem rear axles, improving suspension flexibility, ride comfort, and overall driving stability.

The suspension saddle works together with:

• Balance shaft assembly
• Equalizer beam
• Suspension console bracket
• Bronze bushings
• Oil seals
• Leaf spring assembly
• Rear axle housing
• Chassis mounting bolts

Its primary functions include:

• Supporting the balance shaft assembly
• Providing the pivot seat for the equalizer beam
• Maintaining proper suspension geometry
• Balancing axle loads between tandem axles
• Reducing chassis stress and vibration
• Improving vehicle stability under heavy loads

Under demanding operating conditions such as long-haul transportation, mining, construction, and off-road applications, the suspension saddle continuously bears heavy vertical loads, impact forces, and vibration. If worn or damaged, it may lead to:

• Suspension misalignment
• Excessive balance shaft movement
• Uneven axle load distribution
• Premature bushing wear
• Suspension noise
• Reduced vehicle handling stability

The 6243250112 Balance Shaft Seat is manufactured from premium high-strength structural steel through precision casting, CNC machining, and heat treatment. Critical bearing surfaces and mounting holes are machined to OEM tolerances, ensuring excellent dimensional accuracy, long service life, and easy installation.

Designed according to OEM specifications, this suspension saddle provides direct replacement compatibility for Mercedes-Benz SK and Beiben NG80 rear bogie suspension systems. It is widely used in fleet maintenance, suspension rebuilding, mining trucks, construction vehicles, and heavy-duty commercial transportation.

Each suspension saddle undergoes strict quality inspections including:

• Material composition testing
• Casting integrity inspection
• Hardness testing
• Bearing seat dimensional inspection
• Mounting hole position verification
• Surface coating inspection
• Installation fitment testing

to ensure OEM-quality performance, durability, and reliability.

Technical Specifications

Vehicle Fitment

Payment & Shipping

Related Products Categories

Engine Parts System

Transmission & Drivetrain Parts

Chassis & Suspension Parts

Cabin & Body Parts