The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X150-40SLB is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø80mm bore, 150mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X150-40SLB puts a 40 mm field-adjustable stroke range into an 80 mm bore double-acting package, giving 2513 N of push at 0.5 MPa. Its rear-cap adjusting screw lets you dial the stroke end back from the nominal 150 mm maximum without removing the cylinder, which is invaluable during commissioning or format changeovers. The 25 mm piston rod and PT3/8 ports handle the flow for the 30-800 mm/s speed range, while the built-in magnet (-S) accepts CMSG/DMSG sensors for end-of-stroke confirmation.
This model ships with an LB foot mount (F-SC80LB) for stable surface mounting, and the tie-rod construction keeps service straightforward. The 28 mm air cushion decelerates the 2513 N push load smoothly, and the body length A(SCJ) is 239 mm. At the full 1.0 MPa operating pressure, this cylinder delivers 4523 N of push force, suiting it to medium-duty positioning tasks where the end stop needs regular fine-tuning.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X150-40SLB |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 40 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×150 | Nominal (maximum) stroke length in mm. |
| -40 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
During machine bring-up, the 40 mm adjustment screw lets technicians dial in the exact end stop for a pusher or stop gate without cutting brackets or shimming mounts, cutting setup time significantly.
On packaging lines switching between box sizes, the SCJ80X150-40SLB can be quickly reset to a new stroke end to match the different case dimensions, eliminating the need to stock multiple fixed-stroke cylinders.
In clamping or pressing fixtures, the adjustable stroke can be extended slightly over time to compensate for pad wear or tooling compression, maintaining consistent clamp force without replacing the actuator.
Choose the SCJ80 when you need about 2513 N of push force at standard plant air and the ability to trim the stroke end by up to 40 mm. If your load exceeds 3500 N at 0.5 MPa, stepping up to the 100 mm bore (3927 N push) keeps the pressure margin comfortable; for lighter tasks under 1500 N, the 63 mm bore (1559 N push) is a more compact alternative. This adjustable-stroke unit is the right call when the machine requires periodic end-position changes—if the stroke is permanently fixed, the standard SC80 is simpler and costs less.
For a drop-in replacement, match an AirTAC SCJ cylinder with an 80 mm bore, 150 mm nominal stroke, 40 mm adjust range, PT ports, LB foot mount, and the -S magnet. Because the 150 mm stroke is well within the 1500 mm maximum for this bore, rod buckling is not a primary concern, but for any off-axis loading, add an external guide rail or switch to a guided cylinder to protect the rod and bearing.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N (the pull force is lower because the 25 mm rod reduces the piston area on the return side). At the maximum operating pressure of 1.0 MPa, the push force reaches 4523 N.
Yes, if you need the field-adjustable stroke end. The SCJ80X150-40SLB matches an 80 mm bore, 150 mm maximum stroke, and uses PT3/8 ports with an LB foot mount. Ensure your existing mounting holes match the F-SC80LB bracket pattern, and note that the SCJ body is slightly longer than a fixed-stroke SC to house the adjusting screw mechanism.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.