CAST, CMTB, CMTC (+ -X) open-blade centrifugal fans for conveying dust and materials
Country: · Model: CAST, CMTB, CMTC (+ -X)
The CAST, CMTB and CMTC fans have an open centrifugal impeller, so they pass shavings, sawdust, fibers, granules and film or paper trimmings through themselves. The CAST range has sizes from 400 to 1000 and motors of 2.2–37 kW. They are used in pneumatic conveying and aspiration, where the material passes directly through the fan.
- Type
- single-inlet centrifugal fan with an open impeller, casing and impeller of sheet steel
- Impeller
- CAST — forward-curved open blades; CMTB/CMTC — straight (radial) blades; for heavily dusty air and suspended materials
- CAST — sizes / power
- 400…1000; 2.2…37 kW (per datasheet)
- CAST — motors
- frame sizes 90L…200L; 2900–2960 and 1465–1470 rpm
Technical specifications
| Type | single-inlet centrifugal fan with an open impeller, casing and impeller of sheet steel |
|---|---|
| Impeller | CAST — forward-curved open blades; CMTB/CMTC — straight (radial) blades; for heavily dusty air and suspended materials |
| CAST — sizes / power | 400…1000; 2.2…37 kW (per datasheet) |
| CAST — motors | frame sizes 90L…200L; 2900–2960 and 1465–1470 rpm |
| CAST — airflow | up to ~10 080 m³/h (per datasheet) |
| Drive | direct; -X (CMTB-X, CMTC-X) — belt |
| Cleaning hatch | from size 560 |
| Casing | CAST — all casings continuously welded; CMTC — from size 800 |
| Handled air temperature | −25…+90 °C; +150 °C on request; special versions up to +300 °C |
| Motor | class F, IP55, IE3; 3~ 230/400 V (up to 4 kW), 400/690 V (above 4 kW) |
| Options | stainless steel, ATEX cat. 2, ARR.8 |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The casing and impeller are made of extra-strong sheet steel. In CAST the open blades are forward-curved, and in CMTB and CMTC they are straight. In the basic version the impeller is fixed on the motor shaft, and from size 560 the casing has an inspection and cleaning hatch. The CAST casing is continuously welded in all sizes, and in CMTC welding is continuous from size 800. The class F motors on ball bearings have IP55 and IE3 and are powered from a three-phase 230/400 V supply up to 4 kW and 400/690 V above 4 kW, 50 Hz. The coating is polyester, polymerized at 190 °C. The maximum airflow of the CAST range in the datasheet table is about 10 080 m³/h, the sound pressure level is 80…96 dB(A), and the weight is from 45 to 586 kg.
How to choose
The CAST range includes 2-pole models at 2900–2960 rpm with a power from 2.2 to 37 kW and 4-pole models at 1465–1470 rpm from 7.5 to 18.5 kW, with motor frame sizes from 90L to 200L. The 4-pole variant is taken when a lower air velocity in the material duct and lower noise are needed. For belt drive, CMTB-X or CMTC-X with pulleys, belts and guards is needed. If the material is abrasive or aggressive, stainless steel is made on request, and for explosive atmospheres ATEX category 2 and the ARR.8 arrangement.
Request a price and lead time
CAST, CMTB, CMTC (+ -X) open-blade centrifugal fans for conveying dust and materials. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What is the open impeller of the CAST and CMTB fans for?
The open blades do not get clogged by shavings, fibers or trimmings that pass through the fan together with the air. A closed impeller in such an airstream would quickly become covered with deposits.
What is the noise level of CAST?
According to the datasheet table the sound pressure level lies within 80…96 dB(A), depending on the size and rotational speed. For a permanent workplace nearby, a separate enclosure or a remote installation is provided.
Up to what temperature do the CAST, CMTB and CMTC fans work?
Standard from −25 to +90 °C. Versions up to +150 °C are made on request, and special ones up to +300 °C.
How much does a CAST fan weigh?
The weight depends on the size and ranges from 45 to 586 kg. This has to be taken into account for the foundation or frame under the fan.
Can CMTC be fitted with a belt drive?
Yes, there is the CMTC-X version for this. It is supplied with pulleys, belts and protective guards, like CMTB-X.
REQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.