The Tigercat 6900 grinder has kept on making an impact in the forestry and landscaping industries in Australia since it was introduced by Onetrak last year.
The first production grinder designed and built by Tigercat, the 6900 is a heavy-duty upswing grinder made for high throughput material reduction and mulch production.
Built around an upswing rotor and a gargantuan infeed capacity, the model is aimed at operations that need high throughput, long hours and minimal fuss — whether that’s large-scale mulch production, land clearing, storm-damage cleanup, or integrated recycling yards that demand steady, reliable reduction of woody material.
The 6900 has continued to impress with its performance, aided by a series of demo days organised by Onetrak to highlight the proficiency of the machine.
The grinder is typically offered with a high-horsepower Caterpillar powerplant, paired to hydraulic and mechanical systems sized to keep the rotor turning under full loads for sustained shifts.
Fuel capacity and service intervals are designed to match the machine’s intended applications: long runs converting whole logs, brush and residuals into saleable mulch or biofuel feedstock, with tanks and access points that reduce the need for frequent refuelling or disruptive downtime.
That powertrain choice reflects Tigercat’s philosophy of marrying proven components with a purpose-designed chassis and processing architecture to achieve predictable productivity.
Material handling and metal separation are also given serious attention. The 6900 can be specified with an optional large-diameter magnetic head pulley to catch and remove ferrous contamination as material is processed, protecting the rotor and downstream conveyors.
The machine’s conveyor geometry, the split hog box design and carefully considered grate and gate arrangements allow operators to dial in output gradation and manage tramp impacts.
In instances where an unexpected piece of metal or a hard object finds its way into the throat, Tigercat has layered protections such as shear pins and sectionalised grate frames that will isolate and reduce damage while allowing the operation to continue as quickly as possible.
Tigercat’s cab and control interfaces are designed to provide clear sightlines to the infeed and discharge, while the company’s LogOn connectivity suite gives field access to service data and diagnostics.
That combination means an operator can not only react to material flow with adjustments to infeed angle and conveyor speeds, but also receive timely maintenance alerts and troubleshooting assistance through on-site connectivity.
The result is a machine that doesn’t just chew through tonnes of raw feedstock; it also communicates its needs before they become production problems.
Durability shows up in the details. Tigercat builds the 6900 on a tracked undercarriage that boasts components for long service life in off-road terrain conditions.
Seen as part of Tigercat’s broader move into material processing, the 6900 represents more than just a new model.
It signals the company’s intent to apply its engineering ethos — rugged frames, field serviceability and machine-level integration — to a category dominated by specialist grinders and shredders.
At a glance
• High processing capacity
Upswing rotor for maximum mulch production
• Adjustable in-feed angle
Easy and productive feeding of both long and short material
• Open discharge system
Single discharge conveyor
Open bottom for clean operation and easy service
• Easy mobility on-site
Simple remote control drive system
Pivoting track frame to adjust for varying feedstock
• Effective metal removal with discharge conveyor
Large diameter optional magnetic head pulley
Optional over band magnet
• Easy maintenance with full service access
Split hog box opens for full access to rotor and screens
Hydraulically retractable anvil and screens
• Extremely versatile
Bolt-on hog box and feed conveyor assembly
• Built for extreme duty and long life
Durable components throughout
Legendary Tigercat build quality