Technical Specifications GRB2 880.264 — Data, Dimensions, Foundation

Q: What is the maximum output of the GRB2 880.264?

The reference maximum output is 4.0 t/h for forest biomass at an inlet moisture content of 10–14% (peak throughput of 4.3 t/h is possible).

Q: What foundation dimensions are required?

The minimum foundation footprint is 2.0 × 2.5 m, reinforced concrete slab thickness of at least 300 mm, and an allowable ground bearing pressure of at least 1500 kg/m². Exact parameters require a local geotechnical report.

Q: Does the GRB2 880.264 require a special electrical supply?

The machine requires a 3-phase 400 V / 50 Hz supply with protection sized to the 264 kW connected load. The AIAC automation system applies a simultaneity factor of 0.7 when selecting the supply installation.

01

Motor and Output Parameters

Parameter	Value
Installed main motor power	2x132 kW IE4 740rpm
Reference output (forest biomass)	4.0 t/h
Energy consumption (forest biomass)	66 kWh/t
Main shaft peripheral speed	~5.97 m/s
Conditioner motor power	7.5 kW
Warranty	Up to 36 mo.

Output by Feedstock

Maximum throughput of the GRB2 880.264 depends on the inlet moisture content and bulk density of the feedstock. The table below gives reference values for the main material groups.

Feedstock	Inlet Moisture	Output
Forest biomass, wood chips	10–14%	4.0 t/h
Straw, sunflower husks	12–16%	3.2–3.6 t/h
RDF (refuse-derived fuel)	15–20%	2.6–3.0 t/h

02

Die and Roller Construction

Parameter	Value
Die diameter	880 mm
Number of press rollers	3 rollers
Die material	Stainless steel X46Cr13
Available hole diameters	6 / 8 / 10 / 12 mm
Press roller material	Alloy steel, hardened surface
Roller pressure adjustment	Manual

03

Lubrication and Cooling System

Parameter	Value
Main bearing lubrication type	Centralised, automatic (oil/grease)
Lubrication interval	Automatic, cyclic
Cooling	Forced fan-driven, air-cooled
Bearing temperature monitoring	PT100 sensors, panel alarm

Technological innovation

Patented cooling system for the pelleting assembly

Efficiency, safety and unmatched finished-product quality are the foundations behind the design of our machines. A key element in optimising the technological process is our patented cooling system for the pelleting assembly, created to maintain the highest working standards in the pellet industry.

How does the cooling system work?

The solution is based on an advanced aerodynamic system that transforms thermal control inside the machine:

High-performance external fan - continuously supplies a controlled stream of cold air.
Precise internal duct system - evenly distributes cool air directly into the working zone of the pelleting assembly, effectively reducing excess heat generated during the pressing process.

Three main benefits for your production

Higher pellet mill output: By thermally stabilising the die and rollers, the machine continuously operates within the optimal temperature gradient. This translates into process stability and maximum use of production capacity without the risk of downtime.
DIN+ quality without scorching: Precise thermal control of the feedstock and the pellets leaving the die eliminates the issue of thermal degradation. The finished product retains excellent structure, proper density and natural colour, without the unwanted scorching effect.
Maximum safety (reduced risk of smouldering, ignition and fire): The system lowers the temperature inside the working zone to a safe level. As a result, the risk of fire sources forming or material igniting in the pelleting chamber has been reduced to an absolute minimum.

04

Automation and Control Panel

Parameter	Value
Control panel	Touchscreen, PLC
Automation system	AIAC
Motor load monitoring	Real-time
Remote service access	Optional

AIAC System — Simultaneity Factor

The AIAC automation system fitted to the GRB2 880.264 enables energy optimisation of the entire pellet plant, so that the maximum simultaneous working load is only 70% of the total installed power of all equipment.

05

Dimensions, Weight and Foundation Requirements

Parameter	Value
Length × width × height	3 100 × 3 400 × 2 750 mm
Machine weight (without accessories)	~12 540 kg
Operating weight (fully filled)	~12 700 kg

Foundation Requirements

Reference data for the client's engineering team — a foundation design taking into account local soil conditions is required before installation.

Minimum foundation footprint

4.5m × 2.8 m

Includes service clearance around the machine

Allowable ground bearing pressure

≥ 1500kg/m²

To be confirmed by a local geotechnical report

Foundation slab thickness

≥ 300mm

Reinforced concrete, grade per structural design

Electrical supply

400V / 50 Hz

3-phase, protection rated to 264 kW connected load

Questions & Answers

Frequently Asked Questions

What is the maximum output of the GRB2 880.264?

The reference maximum output is 4.3 t/h for forest biomass at an inlet moisture content of 10–14%. For straw and sunflower husks the output drops to 3.2–3.6 t/h, and for RDF to 2.6–3.0 t/h — the difference is due to bulk density and feedstock properties.

What foundation dimensions are required?

The minimum foundation footprint is 4.5 × 2.8 m, reinforced concrete slab thickness ≥ 300 mm, and the allowable ground bearing pressure ≥ 15 kg/m². Exact parameters must be confirmed by a local geotechnical report from the client's engineering team.

Does the GRB2 880.264 require a special electrical supply?

The machine requires a 3-phase 400 V / 50 Hz supply, with protection sized to the 264 kW connected load. The AIAC automation system applies a simultaneity factor of 0.7 when selecting cable cross-sections and supply-side protective devices.

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