Secomak 669 Direct Drive Blower
A compact direct drive blower with no belts and no maintenance, giving up to 750 m³/h and 17 mbar on a 0.55 kW single or three phase motor at 50 Hz.
At a glance: The Secomak 669 is a direct drive blower with no belts and no bearing assembly, giving up to 750 m³/h and 17 mbar at 50 Hz from a 0.55 kW single or three phase motor. It needs no routine maintenance and suits burner combustion air, air process heaters, cooling, and drying. Hurll Nu-Way supplies and services Secomak blowers in Australia.
No belts and no routine maintenance
The Secomak 669 is a direct drive centrifugal blower: the impeller sits straight on the motor shaft, so there is no belt or bearing assembly to wear out. On an Australian 50 Hz supply it delivers up to 750 m³/h of air and up to 17 mbar from a 0.55 kW single or three phase motor. At 60 Hz it gives up to 882 m³/h and 24 mbar, as used in some export equipment.
The 669 is a 0.55 kW direct drive blower in single or three phase, also built as the 669SO stand-off version for inlet air up to 300°C. Direct drive blowers pair easily with Secomak air process heaters when hot air is needed.
Only essential components are used, which keeps the blower compact and cost effective and means there is no routine servicing. Secomak has built industrial fans and blowers in the UK since 1930, and every blower is hand built and tested before it leaves the factory.
Key advantages
- No belts and no bearing assembly
- No routine maintenance
- Very compact
- Energy efficient motor
- Pairs with Secomak air process heaters
- Hand built and tested in the UK
Secomak 669 specifications
- Peak flow 750 m³/h at 50 Hz, 882 m³/h at 60 Hz
- Peak pressure 17 mbar at 50 Hz, 24 mbar at 60 Hz
- Motor 0.55 kW
- Power supply 230 V single phase or 415 V three phase, 50 or 60 Hz
- Run current 3.5 A single phase, 1.5 A three phase
- Weight 13.5 kg
- Noise level 71 dB(A)
- Max inlet air 40°C (300°C for the 669SO stand-off version)
- Drive Direct drive, no belt or bearing assembly
Performance by supply frequency
| Supply | Peak flow (m³/h) | Peak pressure (mbar) |
|---|---|---|
| 50 Hz | 750 | 17 |
| 60 Hz | 882 | 24 |
Figures from Secomak. Australia and New Zealand use 50 Hz.
Secomak 669 datasheets and brochures
Secomak's current datasheet, with the performance curve and dimensional drawing.
Secomak Model 669 1 document
Spare parts and service
Blower spare parts
Impellers and motors for the Secomak 669, sourced through Secomak. Send us the serial number for part numbers and lead times.
Ask about spare partsBlower overhaul and service
Our technicians overhaul and service industrial blowers on site or in our workshop, and commission new installations.
Book a blower overhaulSecomak 669 FAQs
What flow and pressure does the Secomak 669 give?
On a 50 Hz supply, up to 750 m³/h of air and up to 17 mbar of pressure. On 60 Hz, up to 882 m³/h and 24 mbar. These are the two ends of its performance curve.
Is there a separate 60 Hz model?
No. The 669/50 and 669/60 are the same blower; the figure changes with the supply frequency. Australia and New Zealand use 50 Hz, so the 50 Hz figures apply here. One Secomak datasheet covers both.
What power supply does the 669 need?
Either 230 V single phase or 415 V three phase.
Does a direct drive blower need maintenance?
No routine maintenance. With no belt and no separate bearing assembly, there is nothing to adjust. If a motor fails, our technicians can repair or replace it.
Can the 669 handle hot air?
Yes, in its stand-off version, the 669SO, which takes inlet air up to 300°C. The standard 669 takes inlet air up to 40°C.
Who supplies and services Secomak blowers in Australia?
Hurll Nu-Way, based in Glen Waverley, Victoria, supplies Secomak blowers and gas boosters, and overhauls and services blowers on site or in our workshop. Call 1300 556 380.
Page last updated October 2026.
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