The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X160-50 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø80mm bore, 160mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X160-50 is an 80 mm bore double-acting single-rod cylinder that lets you fine-tune the stroke end position by up to 50 mm using a rear-cap adjusting screw. With a 25 mm diameter 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 strong candidate for medium-duty positioning tasks where the final stop needs to be dialled in on the machine.
Because the adjustment mechanism is built into the rear cap, you can set the exact retract end point without adding external hard stops or swapping the cylinder. The body length A is 239 mm for the SCJ series, and the 28 mm air cushion at each end decelerates the piston smoothly. This model is configured with the default TPU seal, PT threads, and no magnet, ready for standard compressed-air service from -20 to +70 °C.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X160-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 50 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. |
| ×160 | Nominal (maximum) stroke length in mm. |
| -50 | 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, technicians can back out the 50 mm adjustment screw to find the exact retract position for a clamp or stop, then lock it in place without re-plumbing or changing the cylinder.
On packaging lines that run multiple box sizes, the adjustable stroke lets operators quickly reset a pusher stroke from 160 mm down to 110 mm by turning the rear screw, eliminating mechanical stop changes.
In pressing or crimping fixtures where tooling wears over time, the 50 mm adjustment range can be used to advance the stroke end incrementally, maintaining consistent engagement without shims.
Choose the SCJ80X160-50 when you need a nominal 160 mm stroke that can be shortened by up to 50 mm during commissioning or changeover. If your force requirement is lower, the 63 mm bore SCJ63 series provides 1559 N push at 0.5 MPa in a more compact body; if you need more force, the 100 mm bore SCJ100 delivers 3927 N at the same pressure. For applications that do not require field adjustability, a fixed-stroke SC80X160 cylinder offers the same force and mounting interface without the adjusting screw.
This cylinder is a direct replacement for another AirTAC SCJ80X160-50 with PT ports and basic mounting. If you need position sensing, order the -S magnet version so CMSG/DMSG sensors can be clamped to the barrel. For a 160 mm stroke, the rod is well supported inside the bearing, but if the load applies a significant side force, pair the cylinder with an external guide rail or consider a guided cylinder to protect the rod bearing from premature wear.
Adjustable-stroke checklist
Push force at 0.5 MPa is 2513 N, and at the maximum operating pressure of 1.0 MPa it reaches 5026 N theoretically. Pull force is lower because the 25 mm rod reduces the piston area on the return side—expect 2268 N pull at 0.5 MPa.
Yes, the SCJ shares the same bore, rod, port, and mounting footprint as the SC series. The SCJ body is slightly longer to house the adjusting screw, so check the 239 mm body length against your available space. The adjustable stroke is a bonus if you need to fine-tune the end position.
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