Tools · Grading beams
GRB - excavator grading beam
Standard
GRB Grading & levelling beams
Compatible interfaces: S45 · S50 · S60 · S70 · MS08 · MS10 · MS21 · CW10 · CW20 · CW30 · CW40 · OQ45 +9
- 2.5–30 tons
- On request
- Carriers: Mini, Midi, Standard
The GRB is a grading beam for excavators. It spreads and levels soil, gravel and sand over a wide strip, and it holds a flatter surface than a grading bucket because the long blade and the roller behind it both ride on the ground.
About this family
Three versions are built. The Basic beam is rigid and runs without a roller. The Standard beam is rigid and carries a roller on bearings; the roller height is adjustable, so you set how much material stays behind the edge. The hydraulic version tilts up to 45 degrees to each side, which lets you pull a slope or a crossfall without moving the machine.
Two sizes. GRB midi fits machines of 6 to 18 t and comes 2000 or 2500 mm wide; GRB maxi fits 10 to 30 t and comes 2500 or 3000 mm wide. Weights run from 216 kg for the Basic midi 2000 to 680 kg for the hydraulic maxi 3000.
The bottom carries HB500 wear bars and the cutting edge is HB500 as well. The top plate is prepared for a bolt-on bracket, and the beam works behind a tiltrotator.
Options: a bolt-on bracket or adapter, side beams that extend by 250 mm, a mounting spot for a level measuring device, and a guard for the hydraulic cylinder. Hardox® wear bars can replace the standard ones.
Features
- Three versions: Basic without roller, Standard with roller, hydraulic tilting up to 45 degrees each side
- Two sizes: GRB midi 6 to 18 t in 2000 and 2500 mm, GRB maxi 10 to 30 t in 2500 and 3000 mm
Base features:
- HB500 Wear Bars on bottom
- HB500 Cutting Edge
- Top plate ready for Bolt-On Bracket
- Tiltrotator Compatible
- Adjustable Roller
- Roller runs on bearings
- Bearing to roller connection protected against knocks
Optional features:
- Bolt-On Bracket / Adapter
- 250 mm Extendable Side Beams
- Mounting spot for level measuring device
- Hydraulic cylinder guard
- Hardox® wear bars on bottom of beam - option
Dimensions
The letters on the drawing match the columns in the table below.
Dimensions in mm
Typical jobs
- Road building and road maintenance
- Preparing and resurfacing parking areas
- Landscape grading on commercial and residential sites
- Levelling a building plot before the foundations go in
- Large earthmoving jobs that have to finish flat
Models and specifications
Figures as printed on this family’s datasheet. A dash means the datasheet does not state that figure.
Datasheet (PDF)| Model | Version | Machine class [t] | Width [mm] | Height [mm] | Length [mm] | Extended length [mm] | Height without adapter [mm] | Roller diameter [mm] | Depth without extension [mm] | Depth with extension [mm] | Quick coupler brackets | Weight [kg] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GRB-MINI | Standard grading beam with roller | 2.5–10 | 1000 | – | – | – | 227 | 193.7 | 712 | 966 | – | 140 |
| GRB-MINI | Standard grading beam with roller | 2.5–10 | 1500 | – | – | – | 227 | 193.7 | 712 | 966 | – | 182 |
| GRB-MINI | Basic grading beam without roller | 2.5–10 | 1000 | – | – | – | 227 | no roller | 540 | 794 | – | 91 |
| GRB-MINI | Basic grading beam without roller | 2.5–10 | 1500 | – | – | – | 227 | no roller | 540 | 794 | – | 132 |
| GRBH-MINI | Hydraulic grading beam with roller | 2.5–10 | 1000 | – | – | – | 351 | 193.7 | 712 | 966 | – | 216 |
| GRBH-MINI | Hydraulic grading beam with roller | 2.5–10 | 1500 | – | – | – | 351 | 193.7 | 712 | 966 | – | 261 |
| GRB midi | Standard model - rigid with roller | 6–18 | 2000 | 300 | 884 | 1290 | – | 194 | – | – | S45 · S50 · S60 · MS08 · MS10 · CW10 · CW20 · OQ45 · OQ60 · OQ65 · M18 · S1 · SW33 | 325 |
| GRB midi | Standard model - rigid with roller | 6–18 | 2500 | 300 | 884 | 1290 | – | 194 | – | – | S45 · S50 · S60 · MS08 · MS10 · CW10 · CW20 · OQ45 · OQ60 · OQ65 · M18 · S1 · SW33 | 375 |
| GRB maxi | Standard model - rigid with roller | 10–30 | 2500 | 340 | 1015 | 1523 | – | 245 | – | – | S70 · MS10 · MS21 · CW20 · CW30 · CW40 · OQ65 · OQ70 · M26 · S2 · SW33 · SW48 | 482 |
| GRB maxi | Standard model - rigid with roller | 10–30 | 3000 | 340 | 1015 | 1523 | – | 245 | – | – | S70 · MS10 · MS21 · CW20 · CW30 · CW40 · OQ65 · OQ70 · M26 · S2 · SW33 · SW48 | 540 |
| GRB midi | Hydraulic-tilting model with roller | 6–18 | 2000 | 445 | 884 | 1290 | – | 194 | – | – | S45 · S50 · S60 · MS08 · MS10 · CW10 · CW20 · OQ45 · OQ60 · OQ65 · M18 · S1 · SW33 | 480 |
| GRB midi | Hydraulic-tilting model with roller | 6–18 | 2500 | 445 | 884 | 1290 | – | 194 | – | – | S45 · S50 · S60 · MS08 · MS10 · CW10 · CW20 · OQ45 · OQ60 · OQ65 · M18 · S1 · SW33 | 530 |
| GRB maxi | Hydraulic-tilting model with roller | 10–30 | 2500 | 470 | 1015 | 1523 | – | 245 | – | – | S70 · MS10 · MS21 · CW20 · CW30 · CW40 · OQ65 · OQ70 · M26 · S2 · SW33 · SW48 | 620 |
| GRB maxi | Hydraulic-tilting model with roller | 10–30 | 3000 | 470 | 1015 | 1523 | – | 245 | – | – | S70 · MS10 · MS21 · CW20 · CW30 · CW40 · OQ65 · OQ70 · M26 · S2 · SW33 · SW48 | 680 |
| GRB midi | Basic model - rigid without roller | 6–18 | 2000 | 300 | 700 | 1106 | – | – | – | – | S45 · S50 · S60 · MS08 · MS10 · CW10 · CW20 · OQ45 · OQ60 · OQ65 · M18 · S1 · SW33 | 216 |
| GRB midi | Basic model - rigid without roller | 6–18 | 2500 | 300 | 700 | 1106 | – | – | – | – | S45 · S50 · S60 · MS08 · MS10 · CW10 · CW20 · OQ45 · OQ60 · OQ65 · M18 · S1 · SW33 | 247 |
| GRB maxi | Basic model - rigid without roller | 10–30 | 2500 | 340 | 800 | 1306 | – | – | – | – | S70 · MS10 · MS21 · CW20 · CW30 · CW40 · OQ65 · OQ70 · M26 · S2 · SW33 · SW48 | 357 |
| GRB maxi | Basic model - rigid without roller | 10–30 | 3000 | 340 | 800 | 1306 | – | – | – | – | S70 · MS10 · MS21 · CW20 · CW30 · CW40 · OQ65 · OQ70 · M26 · S2 · SW33 · SW48 | 372 |
→ Scroll the table sideways to see every model.
Compliance, certification & documentation
- EN ISO 3834-2Certified welding qualityCSW/1293/2025
- EN 1090-1 EXC1 + EXC2Factory production control1433-CPR-0257
- EN ISO 9606-1 · WPQR EN ISO 15614Qualified welders and procedures
- EN ISO 9712: VT + PT level 2Non-destructive testingwhere the drawing or inspection plan requires it
- EN 10204 3.1Material traceability
- CE: 2006/42/ECCE markingTransition to Regulation (EU) 2023/1230 underway. Applicable from 20 January 2027.
- Materials
- Standard: Cutting edge: HB500; Wear bars: HB500
- Options: Wear bars: Hardox®
Warranty
Sieruta covers manufacturing defects in the components it makes itself.
Normal wear, misuse or overloading and unauthorised modifications are not covered. Warranty terms and claims
Request a quote
Tell us your machine and the job. An engineer checks the fit, and we usually reply within 24–48 hours.
More from this family group
Standard
GRB light - mini-excavator grading beam with lowered mass
A grading beam for mini excavators from 0.6 to 7.0 t. It levels the ground for driveways, roads and building pads.
On requestView product
