The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X180-40S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø63mm bore, 180mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X180-40S is a double-acting, single-rod pneumatic cylinder with a 63 mm bore and a 180 mm nominal stroke, featuring a rear-cap adjusting screw that provides a 40 mm field-adjustable range for fine-tuning the stroke end position. Its 20 mm diameter rod generates a push force of 1559 N at 0.5 MPa, with a maximum theoretical push of 2805 N at 0.9 MPa, making it a robust choice for applications requiring precise end-stop calibration without replacing the cylinder.
This model includes a built-in magnet (S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for reliable end-of-stroke detection. The body length A(SCJ) is 197 mm, and the integrated air cushion (28 mm length) provides smooth deceleration. As a genuine AirTAC product, it ensures consistent performance and long service life in demanding industrial environments.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X180-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 180 mm |
| Stroke adjustment | Up to 40 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. |
| ×180 | Nominal (maximum) stroke length in mm. |
| -40 | 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.
The 40 mm adjustable stroke allows engineers to precisely dial in the optimal end position during machine commissioning, eliminating the need to stock multiple fixed-stroke cylinders for trial-and-error setups.
In packaging or assembly lines, the rear screw enables quick stroke-end recalibration for different product sizes or formats, reducing downtime between production runs without mechanical modifications.
For clamping or pressing fixtures, the adjustable stroke can compensate for tooling wear or material thickness variations over time, maintaining consistent clamping force and position without shims or reprogramming.
Select the SCJ63X180-40S when you need a 63 mm bore with a 180 mm stroke and the ability to dial in the stroke end by up to 40 mm during commissioning or changeovers. If your force requirement is lower, stepping down to the 50 mm bore (982 N push at 0.5 MPa) can reduce energy consumption; for higher force, the 80 mm bore offers 2513 N push. This adjustable-stroke model is ideal when the exact stroke length is uncertain at the design stage, whereas a fixed-stroke SC cylinder is a better pick if the stroke is permanently fixed and a lower-cost solution is preferred.
For replacement, match this model directly with another SCJ63X180-40S with a PT port and the -S magnet option. At a 180 mm stroke, the rod is well-supported, but for strokes exceeding 300 mm, consider adding an external guide or switching to a guided cylinder to manage potential side loads and prevent rod bending.
Adjustable-stroke checklist
The cylinder provides a push force of 1559 N at 0.5 MPa and a pull force of 1402 N. The rear adjusting screw only changes the physical stroke end position within a 40 mm range; it does not alter the bore size, operating pressure, or the generated output force.
A direct replacement requires another SCJ63 adjustable-stroke cylinder with a 180 mm nominal stroke and a 40 mm adjust range. A fixed-stroke SC63 cylinder will not provide the field-adjustable stroke end feature, which is critical for applications needing on-machine fine-tuning.
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.