Tools · Grading beams

GRB light - mini-excavator grading beam with lowered mass

For machines of 0.6–7 t
Widths 1,500–2,000 mm

Price & dispatch weekDownload product sheet (PDF)

We usually reply within 1 working day
We check the fit before we send the quote
12 months warranty on manufacturing defects
Every offer names the dispatch week
If a bracket we made is wrong and does not fit your machine, we replace it.

Call +48 503 808 636Message us on WhatsAppPhotos and voice notes are welcome.

GRB light - mini-excavator grading beam with lowered mass - catalogue render

Standard

GRB Grading & levelling beam

The whole range: Excavator tools

0.6–7 tons
Carriers: Mini, Midi

The GRB light is a grading beam for mini excavators from 0.6 to 7.0 t. You use it to level the ground to a flat surface before further ground work.

About this family

There are two versions: GRB-MIKRO, the standard grading beam, and GRBH-MIKRO, the hydraulic grading beam. Both come in 1500, 1800 and 2000 mm widths and are 346 mm long and 267 mm high. GRB-MIKRO weighs 86, 100 or 113 kg and GRBH-MIKRO 113, 128 or 141 kg, depending on width.

A grading beam is wide and flat, so you get a large working width and you see the edge.

Features

Machine class: 0.6 to 7.0 t
Two versions: GRB-MIKRO standard and GRBH-MIKRO hydraulic
Widths: 1500, 1800 and 2000 mm
Weight: 86 to 113 kg standard, 113 to 141 kg hydraulic
Key features:
- Steel roller
- HB500 Cutting Edge
- Tiltrotator Compatible
- Roller adjusts up and down
- Roller runs on bearings
- Bearing to roller connection protected against knocks
Optional features:
- Basic version: no roller
- Hydraulic version: hydraulic tilting
- Bolt-On Bracket / Adapter
- 250 mm Extendable Side Beams
- Mounting spot for level measuring device
- Hydraulic cylinder guard
- HB500 Wear Bars on bottom

Dimensions

The letters on the drawing match the columns in the table below.

Dimensions in mm

Typical jobs

Levelling ground before further ground work
Finish grading in landscaping
Preparing driveways, paths and building pads

Which coupler is on your machine?

Pick the system on your machine and we put it in your enquiry. We check the bracket before we send the quote.

How to measure your coupler

Not sure which system it is? Three measurements tell us which bracket you need.

Measure the diameter of both pins.
Measure the distance between the pin centres.
Measure the width between the inside faces of the ears.

If the coupler has a make or type printed on it, send that too.

Which machine or coupler?

Models and specifications

Figures as printed on this family’s datasheet. A dash means the datasheet does not state that figure.

Datasheet (PDF)

Which bracket does your machine take? See the coupler fit reference
Looking for your machine by make and model? See the machine fit tables

Models of this family with the figures printed on its datasheet
Model	Version	Machine class [t]	Width [mm]	Height [mm]	Length [mm]	Weight [kg]	Get a price
GRB-MIKRO	Standard grading beam	0.6–7.0	1500	267	346	86	Get a price
GRB-MIKRO	Standard grading beam	0.6–7.0	1800	267	346	100	Get a price
GRB-MIKRO	Standard grading beam	0.6–7.0	2000	267	346	113	Get a price
GRBH-MIKRO	Hydraulic grading beam	0.6–7.0	1500	267	346	113	Get a price
GRBH-MIKRO	Hydraulic grading beam	0.6–7.0	1800	267	346	128	Get a price
GRBH-MIKRO	Hydraulic grading beam	0.6–7.0	2000	267	346	141	Get a price

→ Scroll the table sideways to see every model.

Get a price

Call us

+48 503 808 636

Welded to EN ISO 3834-2. Agree it as a standing term of supply and the EN 10204 3.1 certificate ships with every attachment. You also get the CE declaration of conformity for every product that carries the CE mark.

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Made in Poland
Spare parts and service
Delivery: EU, Norway, Switzerland, United Kingdom
Engineering support

Support in English

Enquiries, quotes and order correspondence in English
For the UK and Ireland: road freight, customs handling included
Operating manuals and spare-parts lists in English
OEM manufacture since 2008
Spare and wear parts direct from our factory
Documents by serial number. EN 10204 3.1 material certificate available, the CE declaration of conformity for every product that carries the CE mark, and the FAT report or manual where one exists
Documentation prepared for the Machinery Regulation (EU) 2023/1230 (applies from 20/01/2027)

Depending on the item, we build to stock or to order. We keep bucket shells and parts in stock to keep lead times short.

Request documents for a serial number Send us the serial number, get the exploded diagram and a rebuild quote

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.

See the certificate details

Warranty

12 months warranty on manufacturing defects in the components Sieruta makes itself.

Normal wear, misuse or overloading and unauthorised modifications are not covered. Warranty terms and claims

Request the CE declaration for your serial number

Why buy from the factory

Cutting, machining, welding and painting on one site, our own factory in Poland, EU
More than 50,000 attachments delivered since 2008
A record for every serial number, so the spare parts match your attachment

Request a quote

Tell us your machine and the job. An engineer checks the fit, and we usually reply within 1 working day.