The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X150-30 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø80mm bore, 150mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X150-30 is an 80 mm bore double-acting single-rod cylinder with a rear-cap adjusting screw that provides up to 30 mm of field-adjustable stroke-end control. With a 25 mm diameter piston rod and PT3/8 ports, it delivers 2513 N of push force at 0.5 MPa, scaling to 4523 N at 0.9 MPa, making it a robust choice for medium-to-heavy pneumatic positioning tasks.
This adjustable-stroke design allows machine builders to fine-tune the end position during commissioning or format changes without replacing the cylinder or adding external hard stops. The tie-rod construction houses a 28 mm air cushion for smooth deceleration, and the body length A(SCJ) is 239 mm for the base model. Standard operating speed ranges from 30 to 800 mm/s.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X150-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 30 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. |
| -30 | 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.
The 30 mm adjustment range lets technicians dial in the exact stroke end position during machine bring-up, compensating for stack-up tolerances in tooling without needing to machine custom spacers.
On packaging or sorting lines, the adjustable stroke allows operators to quickly reset the cylinder's end stop for different box sizes or product formats, minimizing downtime between batches.
In clamping or pressing applications, the stroke-end screw can be advanced over time to take up mechanical wear on gripper pads or contact surfaces, maintaining consistent clamping force without replacing the actuator.
Choose the SCJ80X150-30 when you need a 150 mm nominal stroke with the ability to shorten it by up to 30 mm for precise end-point tuning. If your force requirement is lower, stepping down to the 63 mm bore reduces push force to 1559 N at 0.5 MPa; for higher force, the 100 mm bore offers 3927 N. This model is ideal when the application demands stroke flexibility that a fixed-stroke SC cylinder cannot provide.
For direct replacement, match an AirTAC SCJ cylinder with an 80 mm bore, 150 mm nominal stroke, a -30 adjust range, PT3/8 ports, and basic mounting. At this 150 mm stroke, side-loading is generally manageable, but if the rod is subjected to significant lateral force, consider an external guide rail or a guided cylinder to protect the rod bearing and seal from premature wear.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 5026 N. The push force is higher because the single rod reduces the effective piston area on the return stroke.
A screw mechanism in the rear cap limits how far the piston can retract. Turning the screw shortens the stroke end by up to 30 mm from the 150 mm nominal maximum. It adjusts the end position only and does not change the cylinder's force, speed, or the forward stroke limit.
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