
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X800-30S 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. Ø100mm bore, 800mm nominal stroke, PT1/2 ports and adjustable end cushioning.
The SCJ100X800-30S is a double-acting, single-rod pneumatic cylinder from AirTAC's tie-rod series, distinguished by a rear-cap adjusting screw that provides up to 30 mm of field-adjustable stroke-end reduction. With a 100 mm bore and an 800 mm nominal stroke, this model delivers a push force of 3927 N at 0.5 MPa and 7068 N at 0.9 MPa, making it a powerful actuator for heavy linear positioning tasks. The built-in magnet (suffix -S) allows direct mounting of CMSG/DMSG/EMSG sensors along the barrel for reliable end-of-stroke detection.
The 25 mm diameter piston rod and PT1/2 port ensure robust fluid flow and mechanical rigidity, while the 29 mm air cushion decelerates the piston smoothly at both ends. Its body length A is 245 mm, and the operating pressure spans 0.15 to 1.0 MPa. This cylinder is ideal for applications where the stroke end must be repeatedly fine-tuned during commissioning or format changes, eliminating the need for external hard stops.
| Model | Airtac SCJ100 Standard Cylinder SCJ100X800-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 800 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/2 |
| 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, 29 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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. |
|---|---|
| 100 | Bore size in mm. |
| ×800 | 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.
Operators can quickly dial in the exact push stroke for different box sizes or pallet patterns using the 30 mm rear adjuster, slashing changeover time without swapping the cylinder or reprogramming the controller.
The 7068 N force at 0.9 MPa combined with the fine-tunable stroke end allows precise, repeatable clamping pressure on large workpieces, with the adjustment screw used to compensate for tooling wear over time.
The 800 mm stroke moves large components between distant conveyor stations. The adjustable stroke end acts as a soft, field-configurable end-stop, and the built-in magnet provides sensor feedback to the PLC for high-speed sequencing.
Choose the SCJ100X800-30S when you need a high-force, field-adjustable stroke end within a 30 mm window. If your force requirement is lower, stepping down to an 80 mm bore reduces the push force to 2513 N at 0.5 MPa, saving space and air consumption. For a fixed, non-adjustable stroke, the standard SC100X800 offers a simpler, more compact alternative. This model is a direct replacement for another AirTAC SCJ100X800-30S cylinder with PT ports, a basic mount, and a magnet.
At an 800 mm stroke, managing side loads is critical to prevent rod bending and premature seal wear. If the load is not guided externally, consider pairing this cylinder with an external guide rail or switching to a guided cylinder assembly to ensure long service life.
Adjustable-stroke checklist
Being a single-rod cylinder, push force is greater than pull force. At 0.5 MPa, it provides 3927 N push and 3681 N pull. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 7068 N. The 30 mm stroke adjustment screw does not alter the cylinder's force output.
No. The SCJ100X800-30S is a standard double-acting cylinder and will drift or drop its load if air pressure is exhausted or lost. The air cushion only decelerates the piston at the end of stroke, and the adjusting screw only sets the stroke end position. For load holding without live pressure, you must add a pilot-operated check valve or an external mechanical rod lock.
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