The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X500-100 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø80mm bore, 500mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X500-100 is an 80 mm bore, double-acting, single-rod pneumatic cylinder with a unique rear-cap adjusting screw, providing up to 100 mm of field-adjustable stroke reduction. This allows you to fine-tune the end position from its 500 mm nominal maximum without changing the cylinder body. It delivers a substantial 2513 N of push force at 0.5 MPa, scaling to 4523 N at 0.9 MPa, making it a powerful workhorse for medium-to-heavy industrial tasks.
Built on a robust tie-rod construction, this model features a 25 mm diameter piston rod, PT3/8 ports, and an M20x1.5 rod thread for secure tooling attachment. The integrated air cushion is 28 mm long, providing smooth deceleration. With a body length A(SCJ) of 239 mm, it is a compact solution for applications where the final stroke length must be dialed in precisely during commissioning or changeovers.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X500-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 500 mm |
| Stroke adjustment | Up to 100 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. |
| ×500 | Nominal (maximum) stroke length in mm. |
| -100 | 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 setup, the 100 mm adjustment range allows engineers to precisely dial in the optimal stroke end position for a clamping or pressing operation without swapping out the cylinder or machining external hard stops.
On a conveyor system, a product stop gate can wear down over time. The rear adjusting screw on this SCJ allows operators to quickly extend the effective stroke to compensate for material loss on the gate, maintaining a perfect seal.
When a packaging machine switches between box sizes, the pusher stroke must change. This cylinder lets technicians make a fast, wrench-adjusted stroke change for the new format, drastically reducing downtime compared to replacing a fixed-stroke cylinder.
Select the SCJ80X500-100 when you need a powerful actuator but must have the ability to adjust the stroke end stop on the machine. If 2513 N of push force at 0.5 MPa is insufficient, stepping up to the 100 mm bore provides 3927 N. For applications where the stroke is fixed and never changes, the standard SC80X500 fixed-stroke cylinder is a simpler, cost-effective alternative. This model is a direct replacement for another AirTAC SCJ80X500-100 with PT ports and basic mounting.
For this 500 mm stroke length, be mindful of side-loading on the 25 mm rod. If your application involves any off-axis force, you must use an external guide rail or switch to a guided cylinder assembly to prevent rod bending and premature seal wear. The adjustable stroke feature is ideal for taking up wear in tooling or fine-tuning a stop position, but it does not compensate for poor load alignment.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 2513 N and the pull force is 2268 N. Since it is a single-rod cylinder, the push force is greater than the pull force due to the rod area. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 5026 N.
The rear-cap adjusting screw mechanically limits how far the piston can retract, shortening the stroke end by up to 100 mm from the 500 mm nominal length. It is a mechanical end-stop adjustment, not a mid-stroke positioning system. The cylinder will not hold a load if air pressure is lost; an external pilot-operated check valve or rod lock is required for load-holding safety.
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