Marine Duty Fans and Blowers - Hartzell Fan - (Version JPG) - Page n° 19 - PDF Catalogue | Technical Documentation

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Series 56 M

(Type VB)

Marine Vaneaxial Blowers

Series 56 M VB Marine Duty Vaneaxial Blowers

Hartzell direct drive Marine Duty VB vaneaxial blowers are available in sizes 14" to 48" with air deliveries from 500 to 53,500 CFM. They are designed to be used from 4" to 14" static pressure. VB blowers were developed to meet the demand for equipment handling low volume, high-pressure requirements. In external appearance and in all details of construction, the VB blowers are identical to the VA line. Only the wheel and guide vanes are different. All units are furnished with a totally enclosed air over motor as standard. (See page 4 for standard construction features.)

The VB wheel was developed to meet the demand for low volume, high-pressure requirements. A low pitch and a higher hub to diameter ratio make this impeller more effective than the VA models at high pressures while moving a relatively smaller volume of air.

All of these wheels are cast aluminum, machined and hand ground. They are dynamically balanced to ensure vibration-free operation at high tip speeds.

Principal Dimensions

Series 56 M


Fan Size	A	B	C	D	E	F	J	K	L	T
14	14	17⁹/16	16	¹/4	20	34	⁹/16	12	14	¹/4
18	18	21⁹/16	20¹/4	¹/4	20	34	⁹/16	12	14	¹/4
21	21	24⁹/16	23¹/4	¹/4	26	43	⁹/16	12	17	³/8
24	24	28⁹/16	26³/4		28	51	⁹/16	12	23
26	26	30⁹/16	28³/4	¹/4	30	51	⁹/16	12	21	³/8
29	29	33⁹/16	31³/4	¹/4	31	54	⁹/16	12	23	³/8
33	33	37¹³/16	35³/4	³/8	35	61	⁹/16	16	26	¹/2
36	36	40¹³/16	38³/4	³/8	36	65	⁹/16	16	29	¹/2
48	48	53¹³/16	51¹/4	³/8	39	79	⁹/16	16	40	¹/2

Note: Dimensions and specifications are subject to change. Certified prints are available.

LIFTING LUGS (OPTIONAL)

- EXTENDED ELECTRICAL LEADS W/ CONDUIT BOX ON EXTERIOR OF DRUM

DIA.

REQ'U

GUIDE VANE SECTION

Series 56 M - Marine Duty Vaneaxial, Type VB, Direct Drive

Rating

CFM @ Static Pressure


Size	Model			2"		3''		4''		6''		8''		10''		12''
Size	Model	HP	RPM	CFM	BHP	CFM	BHP	CFM	BHP	CFM	BHP	CFM	BHP	CFM	BHP	CFM	BHP
14	_56-M-147VA—STAII2	1/2	3450	2572	1.65	976	1.28	437	1.52
18	_56-M-187VB—STAIL2	5	3500	4589	2.55	4223	2.98	3629	3.26	1767	3.66	652	4.32
21	_56-M-217VB---STAIM2	7/2	3500	7427	5.68	7108	6.42	6718	7.12	5492	8.04
24	_56-M-247VB—STAIP2	20	3525	13938	14.2	13480	15.3	12991	16.4	11861	18.5	10393	20.2
26	_56-M-267VB---STAIR2	30	3550	18072	21.3	17575	22.6	17079	24.0	15942	26.7	14625	29.3	12850	31.1
29	_56-M-297VB---STAIS2	40	3540	22301	28.2	21855	30.3	21417	32.4	20451	36.4	19240	39.4	17839	42.3	13075	41.0
29	_56-M-297BV---STAIT2	50	3540	27144	41.8	26670	43.8	26220	45.8	25248	49.6	24026	52.7	22660	56.6
33	_56-M-337VB---STAIU2	60	3560	29322	39.5	28831	42.4	28308	45.5	27176	51.4	26031	56.1	24824	59.9	23144	64.2
36	_56-M-367VB---STAIW2	100	3560	38321	59.7	37795	63.5	37248	67.4	36055	75.3	34784	82.7	33547	88.2	32210	92.9
48	_56-M-487VB---STAIV3	75	1780	53580	56.4	51904	60.7	50148	64.9	46062	72.5	39175	77.6	24323	74.1	18692	77.4

Performance certified is for installation Type D: ducted inlet/ducted outlet. Performance data is based on standard air conditions (0.075 #/ft.³). Performance ratings do not include the effects of appurtenances (accessories). Bold-type information provided in the Rating Table above is needed when preparing a model code. See page 2 for the complete Hartzell Model Code Explanation and example.

Bulletin A-143-N

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Marine Duty Fans and Blowers - Hartzell Fan - #19

Fan, Radial blower, Steam air heater, Centrifugal fan, Flow regulator