70-ton rough terrain crane breaks 200-foot barrier

Lexington, Kentucky (March, 1999) - Link-Belt Construction Equipment Company introduced the RTC-8070, a 70-ton (63.5 mt) telescopic rough terrain crane which is the first RT in North America to break the 200-foot tip height barrier with a four-section boom.

The distinct advantage of achieving a 200’ tip height with a four-section boom is the reduced time needed to fully extend and retract the boom versus competing cranes with five section booms. Additionally, because the RTC- 8070’s boom is lighter per foot, overall performance is enhanced.

The RTC-8070 features a standard 41 to 127 ft. (12.50 to 39.70 m), full power, quick reeve four-section boom with a maximum tip height of 202 ft. (61.56 m), with attachments. Both boom options are equipped with he two-mode telescoping proportioning system (A-max) for optimum strength and stability charts.

Two new swing away attachments are available on the RTC-8070. A 39.5 ft. (12.04 m), one-stage, swing away attachment with 2°, 20° and 40° offsets and a 39.5 to 67 ft., (12.04 to 20.42 m), two stage, swing away attachment with 2°, 20° and 40° offsets. Designed with the operator in mind, the RTC-8070 also has no deducts in capacity for stowed attachments, simplifying the crane’s capacity charts. The RTC-8070 also offers impressive pick and carry capacities which are not usually found on such a long attachment.

Designed with the operator in mind, the RTC-8070 also has no deducts in capacity for stowed attachments, simplifying the crane’s capacity charts.

The RTC-8070 Series II also includes two Link-Belt exclusive boom design features — the exclusive "A-max" boom mode and the "BOSS." For in close, big picks, the "A-max" mode (or mode A) allows the operator to extend only the inner-mid section of the boom to maximize the crane’s optimum strength and stability.

The "BOSS" is a patented Link-Belt telescopic boom design of high-strength angle chords (corners) with high formability sidewall embossments with no welds, which places the most steel at the corners where the maximum stress is concentrated.

To improve the deployment of the crane’s outriggers, Link-Belt has added hand-held outrigger controls with approximately eight feet of cable. This feature enhances the operator’s overall control and operation of the crane. The RTC-8070 is powered by a Cummins’ 210 hp., 6BT 8.3-liter engine and a Clark 6-speed (6 forward and 6 reverse) powershift transmission.

A standard Link-Belt feature is the Microguard 434 Rated Capacity Limiter (RCL) with operator-defined parameters and alarm. By setting two points, the operator creates an imaginary vertical plane to maintain safe working distance from any nearby obstacles. Should the crane’s boom go outside the operator-defined limits, the RCL will sound an alarm. The RCL also improves the crane’s efficiency and production by ensuring the crane is operated within the lift chart.

The RTC-8070 Series II features the environmental Ultra-Cab of LCM•2000 construction process featuring laminated fibrous composite technology that provides optimum strength and stiffness. The Ultra-Cab is roomier and quieter than traditional cabs. The overhead console contains a full complement of easy to read and comprehensive backlit gauges as well as rubber encased toggle switches for protection against dust and moisture. Corner-post-mounted gauges monitor critical machine information, such as oil, fuel and water levels.

An automotive style windshield and large side and overhead windows provide the operator with 25% more glass for a full vision-working environment. The dash-less design, lift up arm rests and a wide opening slide-by-door allows operators to enter and exit the cab with ease.

The RTC-8070 features the Packard Electric Metri-Pack wiring system. Each wire and connector in the system is sealed to help prevent corrosion and costly downtime of machines. In addition, all wires have an automotive-type flame retardant cross-linked polyethylene insulation, resulting in a higher heat resistant wiring system.

Another Link-Belt design standard featured on the RTC-8070 is the innovative two-part paint coating technology coupled with a pre-assembly paint process to provide the finest quality coating system available today. This coating technology provides superior adhesion and abrasion resistance. In addition, because all parts are painted before assembly, 100% coverage of each part is realized. This process also enhances the overall aesthetic appeal of the final machine, as nuts, bolts, hoses and a multitude of parts are no longer painted. As a result, paint chipping, cracking and deterioration is significantly reduced when service work and disassembly are required.

The RTC-8070 is designed and manufactured under the ISO 9001 certification. This quality design process has lead to the development of this crane with a superior lift chart, rugged design style, and maximum reliability.