The R 956 excavator replaces the R 954, and has an operating weight of 122,100 pounds. The 326-horsepower Liebherr engine is Tier 4-Interim, using an external EGR system and DPF with active regeneration. According to the company, the steel in the upper carriage has been “optimized” for extended service life. A variety of undercarriages are available, including the LC for earthmoving applications, and two heavy-duty undercarriages (HD and S-HD). The cab includes an air-suspended seat, air conditioning, and a 7-inch color display in which the operator can monitor and adjust many of the machine functions are just some of them. It is equipped with the LiDAT data telematics system.