
The AirTAC Airtac B52-GL Copper-Free Air Treatment Unit B52-GL300C08 is a genuine G-series air lubricator. It meters an oil mist into the compressed-air line so cylinders, valves and air tools downstream stay lubricated, with See datasheet ports and a pc oil bowl. A lubricator does not filter or regulate — it goes last in the line, after the filter and the regulator.
The GL300C08 is an AirTAC G-series air lubricator. It performs one function only - oil-mist lubrication of a compressed-air line - with no filtering and no pressure regulation. This 300-size unit has PT 1/4 in ports (PT is the standard thread; G and NPT versions are order options), a transparent PC bowl for at-a-glance oil-level checks, and a mounting bracket as standard. Maximum working pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. G-series lubricators come in 200, 300, 400 and 600 sizes, with or without a mounting bracket (J) and with PT, G or NPT threads, so the lubricator can be matched to the line it feeds. AirTAC publishes flow for this series as curves rather than a single rating; ask us and we will confirm the datasheet and sizing for your application on request.
| Model | Airtac B52-GL Copper-Free Air Treatment Unit B52-GL300C08 |
|---|---|
| Series | GL300 air lubricator |
| Port size | See datasheet (PT thread) |
| Oil bowl material | PC |
| Bracket | Mounting bracket included |
| Fluid | Compressed air |
|---|---|
| Inlet pressure | 0.05 - 1.0 MPa (7 - 145 psi) |
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Function | Oil-mist lubrication only |
Specifications follow the official AirTAC G-series air-preparation data. A lubricator has no drain, no regulating mechanism, no gauge and no filter element, so none of those figures apply. Oil grade, bowl capacity, flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GL300 | G-series air lubricator, 300 body — sets the port range. |
|---|---|
| C0 | Port size See datasheet. This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (blank) | Mounting bracket included. A bracket ships by default; J orders it without. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
The lubricator has the shortest code of the six G-series subfamilies — size, port, bracket, thread. There is no drain, pressure-type, gauge or filtering-grade position. Example: GL300-10JG is a 300 body, PT3/8", no bracket, G (BSPP) thread.
A larger body carries a larger port and passes more air. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GL600 uses an aluminium-alloy oil bowl; the 200, 300 and 400 bodies use PC.
| This model | GL300 · See datasheet |
|---|---|
| One size down | GL200 |
| One size up | GL400 |
| Line order | Filter first, then regulator, lubricator last |
Lubricates the small cylinders and grippers on pick-and-place heads in packaging machines fed through a 1/4 in line.
Supplies oil mist to the air motors and pneumatic spindles of compact drilling and tapping stations.
Keeps the short-stroke cylinders on laboratory and QC test rigs lubricated without adding filtration or regulation the rig already has.
Match the size to the line: 200, 300, 400 and 600 step up in port and flow capacity, and this 300 size runs PT 1/4 in ports - the right step for compact drops and smaller actuators. Thread is PT as standard, with G (BSPP) and T (NPT) available to order. A code without J includes the mounting bracket; add J to omit it. Flow is published as curves, not as a single rating, so ask us to confirm sizing against your air demand before ordering.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The oil mist travels downstream, so if any branch of the line must stay oil-free, take that branch off before the lubricator. We will confirm the recommended oil grade from the factory datasheet on request.
There is no single rated-flow figure to quote: AirTAC publishes G-series flow as performance curves. Give us your line pressure, port size and downstream air demand and we will confirm the curve and the sizing from the datasheet on request.
PT 1/4 in is the standard thread on this model. G (BSPP) and NPT versions are catalogue options you can order - tell us which thread your pipework uses and we will confirm the correct ordering code.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, availability and lead time — usually within 7-8 hours.