ASPK Multistage Immersion Pumps-Multistage Immersion Pumps-Suzhou Weidoya Automation Electrical Equipment Co., Ltd.-Lubrication, Cooling & Intelligent Sensing

ASPK Multistage Immersion Pumps

ASPK series high-pressure multistage centrifugal pumps suit high-precision, high-performance machine tools requiring high pressure, primarily for workpiece cooling or washing. Their compact design suits confined installation spaces.

This pump is suitable for coolant systems on NC/CNC lathes, machining centres and grinding machines, as well as industrial washing machines and filtration systems. Key wetted components are stainless steel. An integral FKM fluoroelastomer mechanical seal provides heat resistance and durability.

Inquiry

Stainless steel type.

ASPK SERIES

①	MODEL
②	Rated flow (m³/h) 2,4
③	Number of pump stages.
④	Number of impeller stages.
⑤	Mechanical seal material SC:Sic+Carbon, ST:Sic+T/C, TT:T/C+T/C
⑥	Voltage: 2/2: 200/220 V; 2/3: 220/380 V; 4/4: 415/440 V.

» Performance range.

» Scope of application.

• ASPK high-pressure multistage centrifugal pumps suit high-precision, high-performance machine tools, primarily for workpiece cooling and cleaning. Their compact design suits installations with limited space.
• Suitable for coolant systems on NC/CNC lathes, machining centres and grinding machines, industrial washing machines and filtration systems.
Key pump parts are stainless steel and incorporate an FKM fluororubber mechanical seal for heat resistance and durability.

» Fluid.

• Use clean, low-viscosity, non-explosive liquids that contain no solid particles, abrasive sediment or fibers and will not damage the pump.
If the liquid’s specific gravity or viscosity exceeds that of water-soluble cutting fluid, increase motor power appropriately.

» Pump.

• For a deeper oil tank or container, an empty chamber can be used to adjust the pump immersion depth.

Note)More empty chambers may result in a greater pressure drop. Install a baffle between the tank outlet and inlet to prevent discharged fluid from returning directly to the suction line and to limit contamination-related loss of suction.

» Motor.

• This pump uses a standard fan-cooled motor whose main specifications follow general standards.

- Protection rating: IP54
- Insulation class: F
- 50 Hz standard voltage:Three-phase 200/380, 415 V.
- 60 Hz standard voltage:Three-phase 220/380, 440 V.

• We use high-efficiency motors for ratings above 750 W. Motors with non-standard supply voltages or other high-efficiency motors can be made to customer requirements; motor specifications and external dimensions may change.

• The three-phase motor must be connected to a standards-compliant starter box.

Higher ambient temperature

When installing the motor at ambient temperatures above 40°C or altitudes above 1000 metres, reduced air density can impair cooling. Motor output must therefore be derated below its rated power.

As shown in the P2 chart above, pump performance is reduced to 80% when installed at an altitude of 3500 m and an ambient temperature of 60°C.

» Noise.

MOTOR [Kw]	Sound pressure level [dB(A)]
MOTOR [Kw]	50 Hz	60 Hz
0. 37	< 70	< 70
0. 55	< 70	< 70
0. 75	< 70	< 70
1. 1	< 70	< 71

» Mechanical shaft seal.

• Actual operating range depends on operating pressure, pump type, mechanical-seal specification and liquid temperature.

Seal division	Max. pressure	Max. Temperature(℃)
TC/Sic Viton(FKM)	2.5 MPa	0 ~ 120

» Installation precautions.

① Extension chamber

• Empty impeller chambers can extend immersion depth, but using them reduces pump performance.

PUMP TYPE	A mm
ASPK 2 / 4	55

• The minimum level is designed to be 20 mm above the bottom of the strainer.
• Pumping is permitted only when the A mm space between the bottom pressure chamber and the underside of the suction strainer is filled with liquid, preventing seal damage from dry running.
• Maintain at least 25 mm clearance between the bottom of the pump and the tank floor.

ASPK 2-50Hz

» Performance curve (water-soluble cutting oil).

Electrical data 3Ø, 200V/ 220V/ 380V/ 415V, 50Hz

Type.	Number of impeller stages.	Motor Power [Kw]	CURRENT [ A ]	Motor efficiency. [ % ]
ASPK 2-××/1	1	0.37	2.6/2.4/1.4/1.2	68
ASPK 2-××/3	3	0.37	2.6/2.4/1.4/1.2	68
ASPK 2-××/5	5	0.37	2.6/2.4/1.4/1.2	68
ASPK 2-××/8	8	0.37	2.6/2.4/1.4/1.2	68
ASPK 2-××/11	11	0.37	2.6/2.4/1.4/1.2	68
ASPK 2-××/15	15	0.55	3.1/2.8/1.6/1.4	73
ASPK 2-××/19	19	0.75	4.0/3.6/2.1/1.9	80.7
ASPK 2-××/23	23	0.75	4.0/3.6/2.1/1.9	80.7

ASPK 2-60Hz

» Performance curve (water-soluble cutting oil).

Electrical data 3Ø, 200V / 220V / 380V / 440V, 60Hz

Type.	Number of impeller stages.	Motor Power [Kw]	CURRENT [ A ]	Motor efficiency. [ % ]
ASPK 2-××/1	1	0.37	2.4/2.2/1.3/1.1	68
ASPK 2-××/3	3	0.37	2.4/2.2/1.3/1.1	68
ASPK 2-××/5	5	0.37	2.4/2.2/1.3/1.1	68
ASPK 2-××/8	8	0.55	3.0/2.7/1.6/1.4	73
ASPK 2-××/11	11	0.75	4.0/3.6/2.1/1.9	77
ASPK 2-××/15	15	1.1	5.3/4.8/2.8/2.6	84

ASPK 4 – 50Hz

» Performance curve (water-soluble cutting oil).

Electrical data 3Ø, 200V / 220V / 380V / 415V, 50Hz

Type.	Number of impeller stages.	Motor Power [Kw]	CURRENT [ A ]	Motor efficiency. [ % ]
ASPK 4-××/1	1	0.37	2.6/2.4/1.4/1.2	68
ASPK 4-××/3	3	0.37	2.6/2.4/1.4/1.2	68
ASPK 4-××/5	5	0.37	2.6/2.4/1.4/1.2	68
ASPK 4-××/8	8	0.55	3.1/2.8/1.6/1.4	73
ASPK 4-××/11	11	0.75	4.0/3.6/2.1/1.9	80.7
ASPK 4-××/15	15	1.1	5.3/4.8/2.8/2.6	82.7
ASPK 4-××/19	19	1.1	5.3/4.8/2.8/2.6	82.7

ASPK 4 – 60Hz

» Performance curve (water-soluble cutting oil).

Electrical data 3Ø, 200V / 220V / 380V / 440V, 60Hz

Type.	Number of impeller stages.	Motor Power [Kw]	CURRENT [ A ]	Motor efficiency. [ % ]
ASPK 4-××/1	1	0.37	2.4/2.2/1.3/1.1	68
ASPK 4-××/3	3	0.37	2.4/2.2/1.3/1.1	68
ASPK 4-××/5	5	0.55	3.0/2.7/1.6/1.4	73
ASPK 4-××/8	8	1.1	5.3/4.8/2.8/2.6	84
ASPK 4-××/10	10	1.1	5.3/4.8/2.8/2.6	84

ASPK 2 SERIES

» Appearance.

50Hz

MODEL	Moter output [KW]	A	B	C	D1	E	F	Weight [Kg]
ASPK 2-1/1	0.37	425	146	195	141	70.5	102	13.6
ASPK 2-3/3	0.37	467	188	195	141	70.5	102	13.8
ASPK 2-5/5	0.37	509	230	195	141	70.5	102	14
ASPK 2-8/8	0.37	572	293	195	141	70.5	102	14.3
ASPK 2-11/11	0.37	635	356	195	141	70.5	102	14.7
ASPK 2-15/15	0.55	719	440	195	141	70.5	102	17.2
ASPK 2-19/19	0.75	843	524	235	141	70.5	102	18.9
ASPK 2-23/23	0.75	927	608	235	141	70.5	102	19.5

60Hz

MODEL	Moter output [KW]	A	B	C	D1	E	F	Weight [Kg]
ASPK 2-1/1	0.37	425	146	195	141	70.5	102	13.6
ASPK 2-3/3	0.37	467	188	195	141	70.5	102	13.8
ASPK 2-5/5	0.37	509	230	195	141	70.5	102	14
ASPK 2-8/8	0.55	572	293	195	141	70.5	102	16.2
ASPK 2-11/11	0.75	675	356	235	141	70.5	102	18.4
ASPK 2-15/15	1.1	779	440	255	141	70.5	102	20.4
ASPK 2-19/15	1.1	863	524	255	141	70.5	102	21.7
ASPK 2-23/15	1.1	947	608	255	141	70.5	102	23