Vacuum Unit, Vacuum Pump System ZK2 Series

Brand :

SMC

Caution

Refer to p. 91 of the manufacturer's catalog for details of optional functions/applications.
Refer to the manufacturer's catalog for specifications and material details.
The product images may be representative images only. Refer to the manufacturer's catalog for shape details.
CAD data is not available for some models.

Product Description

Vacuum pump system, vacuum unit with digital pressure switch for vacuum and energy-saving function.
[Features]
· Supply air cut when vacuum achieved: Air consumption reduced 90%.
· Compact and lightweight: Size reduced by 28% (88 cm³) and weight by 59% (81 g).
· Reduced wiring for both single units and manifolds.
· Once the supply valve is switched ON, the vacuum generation state is maintained even if the power is cut off. This helps reduce power consumption.

Vacuum Unit, Vacuum Pump System ZK2 Series Specifications

Vacuum pump system external appearance

Vacuum pressure supply (PV) port: ø6 mm, ø1/4" one-touch fittings
Pilot pressure supply (PS) port: ø4 mm, ø5/16" one-touch fittings
Vacuum (V) port: ø6 mm, ø8 mm one-touch fittings, ø1/4", ø5/16" one-touch fittings

Drawing / Single Unit

(Unit: mm)

ZK2P00K□NL2-□, ZK2P00R□NL2-□ drawing (vacuum pump system, single unit, with supply valve / release valve, without switch / pressure sensor)

*1 See the manufacturer's catalog for dimensions with the bracket mounted.

PV Port Type			B
Metric Size	06	ø6 mm	9.7
Inch Size	07	ø1/4"	12.3

V Port Type			A	C
Metric Size	06	ø6 mm	8.25	4
Metric Size	08	ø8 mm	11.4	6
Inch Size	07	ø1/4"	10.8	4.76
Inch Size	09	ø5/16"	11.4	6

ZK2 Series Structural Drawing

With pressure sensor

Lead wire with connector for switch with energy-saving function expanded structural view

With vacuum pressure switch

Components

Number	Part Name	Main Materials	Note
1	Valve Body Assembly	Resin	If not resin, HNBR, NBR, steel, etc. are also used
2	Needle Assembly	Brass	If not electroless nickel plating or brass, resin, steel and NBR are also used
3	Ejector Body Assembly	Resin	If not resin, HNBR, NBR, steel, etc. are also used
4	Ejector Assembly	Resin	If not resin, NBR is used
5	Filter Case Assembly	Resin	Case body: polycarbonate

Replacement Parts

(Unit: mm)

Number	Part Name	Note
6	Valve Assembly	-
7	Connector Assembly	Solenoid valve connector 3-wire (for double), 2-wire (for single)
8	One-Touch Fitting Assembly	Supply (PV) port standards are ø6 mm and ø1/4"
9	Sound-Absorbing Material	10 pieces per set
10	Vacuum Port Adapter Assembly	With one-touch fitting and filter element (case material: polycarbonate)
11	Filter Element	Filtration degree: 30 μm, 10 pieces per set
12	Check Valve	For replacement or additions to prevent manifold exhaust interference, 10 pieces per set
13	Vacuum Pressure Switch Assembly	With 2 screws, 1 gasket
14	Lead wire with connector	-
15	Pressure Sensor Assembly	With 2 screws, 1 gasket

Vacuum Pump System Flow Rate Characteristics

The graph shows the vacuum pump system suction flow rate characteristics at different vacuum pressures

The final flow rate for the suctioning part changes depending on the piping conditions to the vacuum port.
(This graph shows values for when the V port diameter is 8 mm)

Vacuum release flow rate characteristics ZK2□□□ (pump system)

The final flow rate for the suctioning part changes depending on the piping conditions to the vacuum port.

Vacuum Pump System, Vacuum Flow Path and Vacuum Release Flow Rate Characteristics

(Unit: mm)

Connection Port Diameter		V ⇒ PV Flow Rate Characteristics (Vacuum Side)			PS ⇒ V Flow Rate Characteristics (Vacuum Release Side) ^(*)
PV Port	V Port	C [dm³/(s·bar)]	b	Cv	C [dm³/(s·bar)]	b	Cv
ø6 mm	ø8 mm	0.39	0.14	0.09	0.20	0.06	0.04

(*) Characteristics when needle is fully opened

Vacuum Unit ZK2 Series Manifold Structure

Exploded view of manifold

Components

Number	Part Name	Main Materials	Note
1	End Plate D Assembly	Resin	If not resin, HNBR, NBR, steel, etc. are also used
2	End Plate U Assembly	Resin	If not electroless nickel plating or brass, resin, steel and NBR are also used

Replacement Parts

Number	Part Name	Note
3	Tension Bolt Assembly	2 pieces per set
4	Port Plug Assembly	Plug for changing PV port to single side supply specification. (Common for both metric and inches)
5	Port Plug Assembly	Plug for changing PS and PD ports to single side supply specifications. (Common for both metric and inches)
6	One-Touch Fitting Assembly	Metric size: ø8 mm, Inch size: ø5/16"
7	Sound-Absorbing Material	2 pieces per set, Material: non-woven fabric (silencer cover not included)
8	DIN Rail	For the recommended length for each manifold station, refer to the drawing.
9	Connector Housing Assembly	Even number of stations only (if a connector for odd numbers is required, specify the connector number required plus 1 station)

Increasing Manifold Stations (Individual Wiring Specifications)

1. Remove the tension bolts (2 pcs.)
2. Remove the end plate U (take care not to drop the gasket).
3. Mount a single unit for extra station(s) for manifolds to the end surface of the U side. (Do not let the gasket get caught)
4. Mount the end plate U with the appropriate tension bolts for the given number of stations. (Tightening torque: 0.75 N·m)

Port Layout Diagram

The system selects depending on whether "vacuum pump / vacuum ejector" is used as the vacuum source for this vacuum unit.

Single unit model: ZK2P00□□□□-□

System		Vacuum pump
Body Type		Single unit
Exhaust Type		Without silencer
Specification Usage Examples, Purpose, etc.	Vacuum Pressure	-
	Exhaust	-
	Release Pressure	Same pressure as PS

Port combination: PV ≠ PS = PD circuit example

For the circuit diagram, Supply valve: self-holding, Release valve: N.C. (R type)

PV: air pressure supply port / vacuum source (vacuum pump) connection port
PS: pilot pressure supply port
PD: individual release pressure supply port
V: vacuum port
EXH: exhaust port
PE: pilot exhaust port

Notes

*Refer to the manufacturer's catalog for product information not detailed above.
The product images are representative images only.