Takeuchi's diminutive TB228 released at Intermat is the most recent in a long line of compact excavators dating back to 1971. During that time, the Japanese company has made many revisions, and the new model comes with a two-year, 2000-h full machine warranty.
Compact excavators must remain small, and the TB228 uses a Tier-4 Yanmar three-cylinder diesel developing 23.5 hp (17.5 kW) and 63 lb·ft (85.3 N·m). A one-touch engine decelerator, electronic monitoring system, and automatic bleed system are installed for safety and convenience. Power is sent through a hydrostatic drive system to either steel or rubber tracks. Three permanently sealed rollers per side help to distribute the 4-psi (28-kPa) ground pressure. Maximum speeds of 1.7 mph (2.8 km/h) in low range and 3 mph (4.9 km/h) in high range are possible.
The hydraulic system uses twin variable-displacement piston pumps with two gear pumps to power the vehicle functions. The arm has two-way auxiliary hydraulics, and auxiliary hydraulics have push-button electrohydraulic controls. The hydraulic pumps can maintain enough pressure to operate cab swing and two digging functions without a reduction in working speed.
Digging being the primary function, the TB228 has a maximum digging depth of 113 in (2870 mm), a maximum bucket digging force of 6471 lb (29 kN), maximum ground level reach of 186 in (4724 mm), and a maximum dump height of 127 in (3225 mm). Compact dimensions continue with a 57-in (1447-mm) width and a 96-in (2438-mm) height. It has a cast iron counterweight that gives a tail swing radius of 51 in (1295 mm). The operating weight with a 165 lb (75 kg) driver is around 6100 lb (2767 kg).
The cab is equipped with a six-way adjustable seat and seat belt. Safety and convenience features include remote lubrication of the slew and boom swing cylinders, a ROPS, FOPS, and TOPS-compliant canopy; travel alarm; work lights; and a vandalism-protected lockable fuel tank and engine compartment.