Road Building

How to choose

Work through these questions in order, from the old surface to the machine.

1. 1

   Is there asphalt to break out?

   Cut the line before you break out. An asphalt cutter scores a straight edge for the repair to start from. The AC runs a 450 mm steel disc on a bearing assembly. It cuts 150 mm deep, and the depth is adjustable, so you set the cut to the thickness of the asphalt layer. The disc comes symmetrical (ACs) or asymmetrical (ACa). The AC mini does the same job from a mini excavator and also scores thin concrete.

2. 2

   Will a bucket get into the ground?

   Compacted ground, frost, hard clay and old surfaces stop a bucket. Rip them first and load the loose material afterwards with an ordinary digging bucket. The MR has five legs, so one pass loosens a wider strip and leaves smaller pieces to load. The RIP is a single shank with a protector and a replaceable CAT point. On a mini excavator, the RIP mini opens compacted clay, stony fill, thin concrete and asphalt, and its narrow profile keeps the point in view when you rip beside a kerb or a pipe run.

3. 3

   Which ditch profile does the road need?

   A profile bucket cuts the ditch section in one pass. The TR has sloped side walls and cuts a finished trapezoid drainage ditch with no follow-up trimming. The VB cuts a V-shaped ditch, with the angle of the V built to your slope, which is how road shoulders and swales are usually cut. To clean an existing ditch, the round DCB profile lets soil slide out, and the SB Dutch profile has a wider opening that empties sticky clay.

4. 4

   Do you grade slopes and banks?

   A rigid bucket has no tilt joint, so the cutting edge stays fixed to the machine on level work: GD on larger excavators, GB on mini and midi excavators. For slopes, banks and uneven ground, a tilting bucket sets its angle hydraulically without moving the machine. The GDH tilts ±45° and the GBPH up to 45 degrees to each side, and on both a double pilot check valve holds the angle. The PS universal grading bucket has a Scandinavian profile, is used on road building sites and works on a tiltrotator.

5. 5

   Bucket or grading beam for the finish?

   A grading beam holds a flatter surface than a grading bucket, because its long blade and the roller behind it both ride on the ground. The GRB Basic is rigid and has no roller. The Standard carries a roller, and its height sets how much material stays behind the edge. The hydraulic GRB tilts up to 45 degrees to each side, so you pull a crossfall without moving the machine. Side beams that extend by 250 mm and a mounting spot for a level measuring device are options. On mini excavators, the GRB light is wide and flat, so the edge stays in view.

6. 6

   Which machine carries it?

   Match the tool to the machine: AC-18 on excavators from 12 to 18 t and AC-30 from 19 to 30 t, MR-17 to MR-32 from 11 to 32 t, Ripper-C to Ripper-H from 14 to 65 t, DCB-120 to DCB-400 and GDH-120 to GDH-400 from 10 to 40 t, GD-160 to GD-400 and SB-160 to SB-400 from 12 to 40 t, PS-160 to PS-300 from 12 to 30 t, GRB midi from 6 to 18 t and GRB maxi from 10 to 30 t. On mini and midi excavators: GB-10 to GB-90 from 0.6 to 10 t, GBPH-20 to GBPH-95 from 1.2 to 10 t, GRB light from 0.6 to 7 t. Ask us for the TR and VB that fit your machine.