Bobcat Launches Tier 4 600 Frame-Size Skid Steers, CTLs


Landscapers can add to their Tier-4 lineup with Bobcat Company’s first Tier 4 600 frame-size loaders – the S630 and S650 skid steers and the T630 and T650 compact track loaders.

The 600-platform loaders were the first Bobcat M-Series loader models introduced.

These four 74-horsepower loaders meet emissions standards without a diesel particulate filter (DPF).

In addition to eliminating the need for a DPF, the new engines used in 600 frame-size loaders will have increased torque.

The machines feature a 500-hour engine oil and filter change interval, which replaces the previous 250-hour interval. Also, the skid steers and loaders include an air filter equipped with a built-in pre-cleaner filter. There is also a cartridge-style block heater to assist with engine starts in cold conditions.


Bobcat engines feature a machine shutdown when needed. However, instead of shutdown being the only solution, the system monitors coolant and oil temperatures, as well as manages the engine to prevent them from reaching a point where the machine must be shut down.

A new feature for the line is cold weather protection. Anytime the engine temperature is too low, the loader will temporarily limit the maximum engine speed (rpm) to prevent premature component wear or failure. Engine idle speed is also raised slightly to help the engine reach its operating temperature faster. As soon as the engine warms up to a predetermined temperature, the protection mechanism will deactivate. 

The S630 and T630 loaders feature a radius lift path, and the S650 and T650 models feature a vertical lift path.

All four Tier 4 600 frame-size loaders offer operators a two-speed option. The S630 and S650 skid steers have a maximum speed of 7.1 mph in low mode and 12.3 mph in high mode, while the T630 and T650 track loaders can travel up to 6.6 mph in low mode and 10.7 mph in high mode.

The compact track loader models feature an all-steel suspension design to reduce noise and vibration. The rollers are suspended by steel leaf springs and are permanently sealed and lubricated.

Featuring a cab-forward design, the 600 frame-size loaders include a redesigned interior and improved cab pressurization.

Operators also have the choice between standard foot pedal hydraulic controls, the Advanced Control System (ACS) or the Selectable Joystick Controls (SJC) on all machine models.

Available only on M-Series loaders, the optional 5-inch, full-color LCD instrumentation panel monitors loader functions including fuel consumption and the keyless start.

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