The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X400-10 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø63mm bore, 400mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X400-10 is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end adjustment directly on the machine. Its rear-cap screw lets you dial the stroke back by up to 10 mm without dismounting the cylinder, which is invaluable during commissioning or when a tooling position drifts over time. At 0.5 MPa, this 63 mm bore delivers 1559 N of push force and 1402 N on the pull stroke, driven by a 20 mm piston rod through a PT1/4 port.
With a 400 mm nominal stroke and a 28 mm air cushion at each end, the cylinder decelerates the piston smoothly even at higher cycle rates. The body length A(SCJ) is 197 mm, making it slightly longer than a fixed-stroke SC of the same bore. It operates on 40 µm filtered air from 0.15 to 1.0 MPa and handles ambient temperatures from -20 to +70 °C with its standard TPU seals.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X400-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 400 mm |
| Stroke adjustment | Up to 10 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. |
| -10 | 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 10 mm adjusting screw lets technicians dial in the exact stroke end position for grippers or pushers without swapping cylinders or machining external hard stops.
On packaging lines, mechanical end-stops can wear or compress over time. The SCJ's rear screw provides a quick 10 mm adjustment window to restore the precise stopping position without downtime.
When a production line switches between product sizes, the adjustable stroke allows operators to shift the cylinder's end position by up to 10 mm to accommodate different box heights or pallet dimensions.
Choose the SCJ63X400-10 when you need a 400 mm stroke that can be trimmed by 10 mm on the machine. If your load requires more push force, stepping up to the 80 mm bore gives 2513 N at 0.5 MPa; if space is tight, the 50 mm bore still provides 982 N. Because this is a 400 mm stroke, evaluate side-loading carefully—long strokes amplify rod deflection under off-centre loads, so consider an external guide rail or a guided cylinder if the load is not perfectly axial. For a direct replacement, match the 63 mm bore, 400 mm nominal stroke, 10 mm adjust range, PT port thread, and basic mounting. If you need position sensing, specify the -S magnet option to use CMSG/DMSG sensors.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 3118 N. The pull force is lower because the 20 mm piston rod reduces the effective area on the return stroke.
A rear-cap adjusting screw shortens the stroke end by up to 10 mm, giving you field-adjustable control over the piston's stop position. It can replace an SC fixed-stroke cylinder of the same bore and mounting if you need this adjustability, but the SCJ body is slightly longer. Ensure the 10 mm adjustment range covers your required stroke variation.
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.