SMC ZU07L In-line Vacuum Ejector 0.7 mm Nozzle, Large Flow

A large-flow in-line ejector for leaky or porous parts

ZU07L is the large-flow version of the SMC ZU in-line vacuum ejector with a 0.7 mm nozzle. The supply and vacuum ports are in line, the body is resin and weighs 7.0 g, and built-in one-touch fittings accept 6 mm tube on both ports, so it can be installed in a tube run directly beside the suction pad.

The code means ZU (series), 07 (0.7 mm nozzle) and L (large-flow type). Compared with the S type it gives a lower final vacuum, -48 kPa instead of -84 kPa, but a higher suction flow rate, 16 L/min instead of 10 L/min at the same 29 L/min air consumption.

Technical specifications

When to pick the large-flow type

A pad that does not seal perfectly, a cardboard box, a foam sheet or a perforated part lets air leak in while the pad is on the part. A high-vacuum ejector then loses much of its capacity, since its flow is small, and the pad may not hold. The large-flow type moves more air at moderate vacuum, which is the behaviour needed for these jobs, and it also fills a large pad and tube volume faster.

For a sealed, non-porous part the S type gives the stronger grip. Both types of the same nozzle consume the same air, so the choice depends on the leakage, not on the cost of air.

Installation notes

Use clean, dry air, mount the ejector near the pad, keep the exhaust free and supply the standard 0.45 MPa unless the characteristic graphs in the catalogue show a better point for your case. The maximum operating pressure is 0.6 MPa and the ambient range is 5 to 60 deg C.

A vacuum level of -48 kPa gives a limited lifting force per pad area, so calculate the pad size with a generous safety factor for the load and the acceleration of the machine, and confirm the result by test. The calculation is the responsibility of the machine builder, who also has to confirm that the pad holds the part during the fastest move of the cycle, not only at rest.

Documents and quotation

The SMC ZU catalogue PDF below has the how-to-order page, model table, dimensions and characteristic graphs. Please confirm nozzle size, type and tube size before ordering. Other vacuum and pneumatic accessories are listed under Automation Accessories. Seven Star LLC is an independent supplier and quotes the exact code on request.

ZU07L and its successor, the ZU07LA

The ZU07L is part of the original SMC ZU in-line ejector range. SMC now offers the ZU□A series as the newer generation, and the current equivalent of the ZU07L is the ZU07LA. The ZU-A body is shorter and lighter, but it keeps the in-line layout, the Ø6 mm one-touch connections and the large-flow (L) characteristic. The data below come from the SMC ZU-A catalogue and are representative values at the standard supply pressure.

When a ZU07L is replaced by a ZU07LA, check the mounting length (the new body is shorter) and confirm the vacuum and flow on the machine.

How It Works

Supply air passes through the 0.7 mm nozzle and forms a high-speed jet. The jet drags air out of the vacuum port and into the diffuser, which recovers pressure and sends the mixed air to the exhaust at the centre of the body. In the L type the diffuser is designed to move a larger volume of air at a lower vacuum, which is what keeps a pad gripping when air leaks in through a porous or uneven surface.

Selection & Ordering Guide

• ZU – in-line vacuum ejector series.
• 07 – 0.7 mm nozzle; the ZU-A range also includes 0.3, 0.4 and 0.5 mm.
• L – large-flow type; S is the high-vacuum type (–90 kPa, 11 L/min for ZU07SA).
• A – current ZU-A generation, then the port symbol (Nil = Ø6 one-touch, 01 = Rc1/8 female thread).

The supply valve for a ZU07 ejector should have a C factor of at least 0.23 dm³/(s·bar), as recommended in the ZU-A catalogue. Our team can help confirm the correct ordering code.

Installation & Maintenance

• Support the P-side and V-side tubes so the body carries no piping load.
• Leave the central exhaust open; blocking it reduces performance.
• Use the standard 6 mm tube size; reducing the tube bore cuts flow and vacuum.
• Use clean compressed air (SMC recommends ISO 8573-1:2010 class 2:4:3, 2:5:3 or 2:6:3) to keep the nozzle and exhaust from clogging.

Typical Applications in Oman & the GCC

The ZU07L suits handling of cardboard, cartons, paper, bags, foam and parts with holes, typical of packaging, printing, food and logistics lines, and opening plastic bags in bagging machines.

Why Source from Seven Star LLC

Seven Star LLC supplies SMC vacuum ejectors, pads and pneumatic fittings across Oman and the GCC. Request a quote for the ZU07L or the current ZU07LA.