SI-Back B centrifugal backward curved blade fan high capacities low and medium pressures

SI-Back B fans are designed for installations requiring medium-large air deliveries with low-medium pressures, in industrial duct mounted applications for conveyance of very dusty air. For instance: sawdust, woodchips, granulated materials, excluding fibrous materials.

This line consists of 16 sizes with impeller diameter from 220 up to 1250 mm.

SI-Back B line is characterized by the extreme sturdiness due to the rigid construction in enamelled sheet metal and the thickness of the materials. Another feature is the special selfcleaning profile of the blade that allows the conveyance of material and the variety of models and versions.

Volute in epoxy painted enamelled steel sheet. Fixing flanges according to UNI EN ISO 1335/Tab.1
High efficiency backward curved blade welded impeller; balancing according to UNI ISO 21940-11
Asynchronous three or single phase, electric motor, protection IP 55, insulation class F, service S1, mounting type B3 or B5, construction according to IEC/EEC (UNEL MEC) standards
Arrangement 4 or 5 (impeller directly coupled to motor shaft); execution 1, 9, 12 (belt driven, with impeller coupled to the motor by mean of transmission)

Arrangements:

SI-Back B arrangement 4: impeller directly coupled to motor shaft, motor placed on the motor support
SI-Back B arrangement 5: impeller directly coupled to motor shaft, motor flanged on the fan volute
SI-Back B arrangement 1: bare shaft version, basic arrangement for belt coupling (without any coupling component)
SI-Back B arrangement 9: belt coupling version, with motor placed on the side of the support (including belt drive kit and motor)
SI-Back B arrangement 12: belt coupling version, with motor and fan placed on a common basement (including belt drive kit and motor)

Accessories: Inlet protection grid (IPG-SBB) Necessary for use in free air - Outlet protection grid (OPG-SBB) Necessary for use in free air - Inlet flexible joint (IFC-SBB) - Outlet flexible joint (OFC-SBB) - Inlet counter flange (ICF-SBB) - Outlet counter flange (OCF-SBB) - Inspection door (ID-SBB) - AV mounts (AM) - Condensation drain hole (CD).

On request: Explosion proof versions (SI-Back B Atex) - Stainless steel versions - High temperature versions (150°C for direct coupling and 300°C for belt coupling versions).

Read all

Features

Conveyed air: very dusty - conveyance materials
Temperature of conveyed air: -20°C/+60°C
Voltage: three phase version (T) 400V – 50Hz - single phase version (M) 230V – 50Hz