The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X400-100 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 SCJ63X400-100 is a double-acting, single-rod pneumatic cylinder with a 100 mm field-adjustable stroke range, letting you fine-tune the end position without replacing the unit. With a 63 mm bore and 20 mm rod, it delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, scaling up to 2805 N at 0.9 MPa, making it a strong mid-range actuator for commissioning and format changes.
The rear adjusting screw shortens the 400 mm nominal stroke by up to 100 mm, providing a body length of 197 mm (A dimension) plus stroke. It uses PT1/4 ports, an M16x1.5 rod thread, and a 28 mm air cushion for smooth deceleration. The standard TPU seal and PT thread suit general industrial environments from -20 to +70 °C.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X400-100 |
|---|---|
| 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.
The 100 mm adjustment screw lets technicians dial in the exact stroke end position during machine setup without swapping cylinders or machining hard stops, speeding up production line commissioning.
Quickly adapt the cylinder's end position for different product sizes on packaging or material-handling systems. The 400 mm nominal stroke with a 100 mm trim range handles varied push-off or diverting tasks.
In clamping or pressing fixtures, use the screw to take up mechanical wear over time, maintaining consistent contact force without reprogramming the PLC or adding external shims.
Step up to an 80 mm bore (2513 N push at 0.5 MPa) if this 63 mm unit's 1559 N is marginal, or down to a 50 mm bore (982 N) for lighter, more compact tasks. Choose this SCJ adjustable-stroke model when you need to dial in the stroke end on the machine; if the stroke is fixed and never changes, the standard SC63X400 is a simpler, lower-cost alternative. For a drop-in replacement, match the 63 mm bore, 400 mm nominal stroke, 100 mm adjust range, PT1/4 ports, basic mounting, and no magnet.
At a 400 mm stroke, side loads can cause rod bending. If the load is not perfectly guided, add an external guide rail or switch to a guided cylinder assembly to protect the rod bearings and seal.
Adjustable-stroke checklist
At 0.5 MPa it generates 1559 N pushing and 1402 N pulling. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 2805 N. The pull force is lower because the 20 mm rod reduces the piston area on the return stroke.
Yes, this is a direct dimensional and performance match for an AirTAC SCJ63 adjustable-stroke cylinder with a 400 mm nominal stroke and 100 mm adjust range. Ensure your existing unit also uses PT1/4 ports and basic mounting. If your old unit had a magnet or different mount, select the matching suffix code.
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.