Used Mini Excavator Chassis and Counterweights

Mini Excavator Chassis: The Role of Low and High Chassis

On a mini excavator, the low chassis supports the undercarriage: frame rails, rollers, sprockets, and travel motors. The high chassis, or turret, sits on the slewing ring and carries the engine, cabin, boom, and counterweight. Replacing an original used chassis allows you to get a damaged machine back in service without rebuilding the entire structure.

Mini Excavator Spare Parts: Chassis and Counterweights

• Fixed or variable gauge low chassis for mini and crawler excavators
• High chassis and turrets, depending on the dismantled machines
• Counterweights for mini excavators, excavators, and loaders
• Used undercarriage components: sprockets, rollers, and tension wheels
• Common brands: Kubota spare parts, Yanmar, Volvo, Hitachi, Bobcat, and JCB

Kubota, Case TP and Other Mini Excavator Spare Parts

Kubota, Yanmar, Bobcat, and Case mini excavators rarely share structural parts, even with the same tonnage. Find our Case TP spare parts and cabin components such as the mini excavator seat, then provide the exact model of your machine so our advisors can verify compatibility.

Variable Gauge or Fixed Chassis: Dimensions and Width

The variable gauge chassis widens or narrows the track spacing by hydraulic cylinder: the machine can pass through a gate when retracted and regains stability when extended. The fixed chassis, simpler in design, is fitted on most mini excavators starting from 2 to 3 tons. With a used part, check the slide rails and the extension cylinder of a variable gauge chassis, and the frame rails of any chassis: these areas reveal impacts or overloads.

Micro Excavator and Compact Mini Excavator, 1.5t or 2t

On a micro or compact mini excavator weighing 1.5 to 2 tonnes, the chassis width determines site access: in a retracted position, the variable gauge often allows passage through a gate or door. Note the overall width and track center distance of your machine before choosing a used chassis.

Used Counterweights: How to Choose Properly

• The counterweight balances the machine when the boom works in an extended position
• Its weight and shape are specific to each model: a mismatched part destabilizes the machine
• For mini excavators with a reduced rear overhang, the counterweight is shaped to stay within the track profile
• Inspect the contact surfaces and mounting threads before reassembly
• Note the manufacturer's reference and the machine's serial number

Buying and Selling: Checking Chassis Compatibility

Two mini excavators of the same tonnage do not necessarily have the same chassis: the track center distance, position of travel motors, and turret mounting points differ between brands and series. Provide the exact model and serial number of your machine: our advisors confirm compatibility before any order at 05 53 96 16 43.

Codimatra: Structural Parts for Construction Machinery

• Original manufacturer parts dismantled from carefully selected machines
• Workshop inspection before stocking: frame rails, welds, contact surfaces
• Approximately 17,000 references of used parts for all brands
• Shipping throughout France and internationally with transport quotes adapted to the part’s weight
• Looking for a complete machine? See our used mini excavators

Slewing Turret, Blade and Structural Parts

Beyond the chassis, a mini excavator rests on other structural components: the slewing turret that supports the engine and cabin, the backfill blade fixed to the front of the low chassis, and the boom mounting points. On a compact machine, these parts endure significant stresses relative to their size. A genuine used replacement part matches the manufacturer’s dimensions exactly, whereas a new aftermarket part may require adjustments. Codimatra offers a wide range of structural parts for mini excavators and excavators, all sourced from dismantled and inspected machines.