80KPA Roots Air Blower,  DN65 air cooled compressor, 120m3/h, pneumatic blower
 
 
About BK-3
 
BK-3 series roots blower, the third generation of BK blower,  inherits all the advantages of BK blower. With rotor curve optimized, the blower is featured of high efficiency and perfect performance. The blower is cooled by natural air under 80KPA boost pressure, no need for other cooling device. And a little floor space is required by its compact structure.

 

Specifications
 

Model	BK65
Air capacity	2.46-6.36m3/min
Discharge differential pressure	10-80KPA
Rotary speed	1500-2750rpm
Motor type	3-11KW 380/400/415/440V/220V, 3PHASES, 50/60HZ, frequencytype
Motor brand	Standard: Siemens Beide or Wannan motor Siemens and ABB motor for your option
Installation type	Vertical type
N.W. of blower without motor	161kg
Packing size Approx.	1.3*0.9*1.2m (length*width*height)

Features

Optimized lobe curve is adopted for reducing blower’s internal leakage, improving blower’s efficiency and reducing running temperature. After radius-center distance ratio narrowed and shaft’s diameter enlarged, no deformation and collision will occur under higher load pressure as the blower’s strength is improved. Unique end-cover structure is adopted for making bearing cavity separated from gas chamber relatively, so there\'s  little impact of inside high temperature rising on bearings. In order to lower blower\'s noise, deep groove ball bearing of high precision and low friction factor is adopted. Also due to larger size bearing used for matching enlarged shaft diameter, the bearing’s load capacity is improved and its service life is prolonged.

 
 
Parameter

Model	Rotary Speed (RPM)	Inlet capacity (m3/min)and shaft power (kW) under various pressure
0.01Mpa	0.02Mpa	0.03Mpa	0.04Mpa
m3/min	KW	m3/min	KW	m3/min	KW	m3/min	KW
BK65	1500	3.17	2.23	2.89	2.66	2.68	3.08	2.50	3.51
1700	3.68	2.52	3.41	3.01	3.19	3.49	3.02	3.98
1900	4.19	2.82	3.92	3.36	3.71	3.91	3.53	4.45
2075	4.64	3.08	4.36	3.67	4.15	4.27	3.97	4.86
2200	4.96	3.27	4.68	3.89	4.47	4.52	4.29	5.15
2425	5.54	3.60	5.26	4.29	5.05	4.98	4.87	5.68
2600	5.98	3.86	5.71	4.60	5.50	5.34	5.32	6.09
2750	6.36	4.08	6.09	4.87	5.88	5.65	5.70	6.44

Model	Rotary  Speed (RPM)	Inlet capacity (m3/min)and shaft power (kW) under various pressure
0.05Mpa	0.06Mpa	0.07Mpa	0.08Mpa
m3/min	KW	m3/min	KW	m3/min	KW	m3/min	KW
BK65	1500	2.35	3.94	2.20	4.37	2.07