
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X50-30TC 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, 50mm nominal stroke, PT1/2 ports and adjustable end cushioning.
The SCJ100X50-30TC is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end adjustment directly on the machine. Its rear-cap screw provides a 30 mm adjustment range, letting you dial in the exact 50 mm nominal stroke end position without adding external hard stops—ideal for commissioning trials or format changeovers on packaging and assembly lines.
At 100 mm bore, this cylinder delivers 3927 N of push force at 0.5 MPa and up to 7068 N at 0.9 MPa, driven by a 25 mm diameter piston rod. The TC centre trunnion mount (supplied with TCM1 bracket, order code F-SC100TC) allows the cylinder body to pivot, accommodating swinging loads. The rod is threaded M20x1.5 and the ports are PT1/2, with an adjustable air cushion of 29 mm for smooth end-of-stroke deceleration.
| Model | Airtac SCJ100 Standard Cylinder SCJ100X50-30TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 50 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. |
| ×50 | 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.
Fine-tune the 50 mm stroke end position by up to 30 mm during machine setup without removing the cylinder or machining custom stops, speeding up production line validation.
Quickly adjust the push stroke on a case packer or palletiser when switching between product sizes, using the rear screw to set the new insertion depth in seconds.
Take up mechanical play in linkages or gripper fingers over time by advancing the stroke end, maintaining consistent clamping force without replacing the actuator.
Choose the SCJ100 bore when your application needs roughly 3900 N of push force at standard shop air. If you can step down, an SCJ80 delivers 2513 N push at 0.5 MPa and may reduce air consumption; if you need more force, the SCJ125 provides 6136 N. This TC trunnion-mounted version is the right pick when the cylinder must pivot during its stroke—if your load travels in a straight line, a basic or foot-mounted (LB) SCJ100X50-30 is simpler.
For a direct replacement, match the 100 mm bore, 50 mm nominal stroke, 30 mm adjustment range, PT1/2 ports, and the TC centre trunnion mounting. Note that the SCJ does not include a magnet as standard; if you need piston position sensing, specify the -S suffix. For strokes of 300 mm or more, evaluate side-loading and rod buckling—consider adding an external guide rail or switching to a guided cylinder if the load is not perfectly axial.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N (the difference is due to the 25 mm rod area). At the maximum operating pressure of 1.0 MPa, the theoretical push force is 7068 N. Always apply a safety factor for dynamic loads.
Yes, provided the mounting style is compatible. The SCJ100 adds a rear adjusting screw, making the body slightly longer than a standard SC100. You must match the 100 mm bore, PT1/2 ports, and centre trunnion (TC) mount. The SCJ allows you to shorten the stroke end by up to 30 mm, which is not possible with a fixed-stroke SC.
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