The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X400-100S 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. Ø63mm bore, 400mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X400-100S is a double-acting, single-rod pneumatic cylinder that puts precise stroke-end tuning directly in your hands. With a 100mm rear-screw adjustment range and a 400mm nominal stroke, you can fine-tune the end position on the fly for commissioning or format changes without swapping the cylinder. Its 20mm rod and 28mm air cushion deliver smooth, controlled deceleration, while the PT1/4 port supplies up to 2805 N of push force at 0.9 MPa.
This model includes a built-in magnet (-S suffix), allowing CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for reliable, non-contact position sensing. The standard TPU seal ensures dependable operation from -20 to +70°C. As a genuine AirTAC component, it provides a direct, field-adjustable replacement for any SCJ63 cylinder with the same bore, stroke, and adjustment range.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X400-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 400 mm |
| Stroke adjustment | Up to 100 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | Bore size in mm. |
| ×400 | 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.
Quickly dial in the perfect end-stop position during machine commissioning. The 100mm adjustment range allows engineers to compensate for assembly tolerances and achieve precise part placement without changing hard stops or cylinder mounts.
Ideal for packaging or sorting lines running multiple product sizes. Operators can adjust the stroke end to match a new box height or pallet width in seconds, minimizing downtime between batches and eliminating the need for multiple fixed-stroke cylinders.
Maintain consistent clamping or pressing force over time. As tooling or contact surfaces wear, the rear adjusting screw can be advanced to take up the slack, extending the effective life of fixtures and maintaining process quality without replacing the actuator.
Choose the SCJ63 when you need the 1559 N push force at 0.5 MPa that a 63mm bore provides. If your load demands more, stepping up to the SCJ80 offers 2513 N of push force at the same pressure. For lighter, more compact applications, the SCJ50 delivers 982 N. If your application does not require field-adjustable stroke, the fixed-stroke SC63 is a simpler, more cost-effective alternative. For this 400mm stroke, be mindful of side loads; if the rod is unsupported, consider an external guide or a guided cylinder to prevent bending and ensure long seal life. A direct replacement must match the 63mm bore, 400mm stroke, 100mm adjustment range, PT port thread, and built-in magnet.
Adjustable-stroke checklist
The theoretical push force at 0.5 MPa is 1559 N, and the pull force is 1402 N. At the maximum operating pressure of 1.0 MPa, the push force reaches 3118 N. The pull force is lower due to the area of the 20mm piston rod.
No. The SCJ is a standard double-acting cylinder and will not hold its position 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 pressure, you must add an external rod lock or a pilot-operated check valve.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.