Ring Blowers
HRB - 301 · 401 Single Phase(1ø)

H&H Electric is supplying high-efficiency and high-quality products
through continuous technological development.
- HRB-301
- CAD file download PDF file download
- HRB-401
- CAD file download PDF file download
Dimensions

- The dimension is managed to around ±5mm.
- The dimension may be changed without notice for performance improvement.
Performance & Specifications
HRB-301 | HRB-401 | |||||
50Hz | 60Hz | 50Hz | 60Hz | |||
PHASE | 1 | 1 | ||||
MOTOR | HP | 1.5 | 2.0 | 2.5 | 3.0 | |
Kw | 1.1 | 1.5 | 1.83 | 2.2 | ||
PRESSURE | mmAq | 1800 | 1800 | 2200 | 2800 | |
VACUUM | mmAq | 1600 | 1600 | 1800 | 2000 | |
MAX. AIR FLOW | ㎥/min | 3.2 | 4.0 | 3.2 | 4.0 | |
CURRENT | 220V | A | 11.5 | 12.5 | 12.0 | 19.0 |
SOUND LEVEL | dB(A) | 75 | 75 | |||
MATERIAL | IMPELLER | Aluminum | Aluminum | |||
CASING | Aluminum | Aluminum | ||||
(BEARING) | FRONT | 6205ZC3 | 6205ZC3 | |||
MIDDLE | - | - | ||||
REAR | 6205ZZC3 | 6205ZZC3 | ||||
WEIGHT | Kg | 33 | 35 | |||
INSULATION CLASS | F | F |
- The above performance is based on standard condition of ambient temperature 20℃ and atmospheric pressure of 1,013 mbar.
- The performance tolerance is ±10%.
- The noise is measured at distance of 1.5 m with the inlet and outlet completely open.
- Inquire about ring blowers that require special treatment such as corrosion treatment or use of explosion-proof motors.
Performance Curve

- Continuous operation around the rated pressure may damage the motor due to overheating, so appropriate measures such as installing a relief valve are required( refer to the parts and the accessories page).
- The performance tolerance is ±10%.