The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X225-10 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, 225mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X225-10 is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides up to 10 mm of field-adjustable stroke-end control. With a 63 mm bore and 20 mm rod, it delivers 1559 N of push force at 0.5 MPa (2805 N at 0.9 MPa), making it a strong mid-range actuator for tasks where the final stop position must be dialled in precisely during commissioning or after mechanical wear.
This model uses a nominal 225 mm stroke, well within the 1500 mm maximum for the 63 bore. The PT1/4 port, M16x1.5 rod thread, and 28 mm air cushion are standard. The body length A(SCJ) is 197 mm plus stroke, offering a compact tie-rod build that is not dimensionally interchangeable with ISO 15552 profiles.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X225-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 225 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. |
| ×225 | 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.
The 10 mm rear screw lets technicians fine-tune the actuator's stop point on a new machine without fabricating shims or moving sensors, speeding up initial start-up.
On a packaging line, the stroke end can be adjusted slightly to compensate for seal wear or tooling drift over time, maintaining consistent product placement.
When a fixture processes parts of slightly different lengths, the operator can quickly adjust the stroke end within the 10 mm range to accommodate the new format.
Choose the SCJ63X225-10 when you need to fine-tune the end-of-stroke position by up to 10 mm without adding external hard stops. If your force requirement is lower, stepping down to a 50 mm bore reduces push force to 982 N at 0.5 MPa; for higher force, an 80 mm bore provides 2513 N. For a fixed, non-adjustable stroke, the standard SC63X225 is a simpler alternative. This SCJ cylinder is a direct replacement for an existing AirTAC SCJ63X225-10 with PT ports, basic mounting, and no magnet. For strokes over 300 mm in this bore, evaluate side-load and rod bending; an external guide or a guided cylinder may be necessary.
Adjustable-stroke checklist
At 0.5 MPa, the cylinder produces 1559 N pushing and 1402 N pulling. At the maximum operating pressure of 0.9 MPa, the push force reaches 2805 N. The pull force is always lower because the 20 mm rod reduces the effective piston area on the return stroke.
No. The SCJ63X225-10 is a standard double-acting cylinder and will drift or drop if air pressure is lost or the valve is centred. The rear adjusting screw only sets the stroke end position; it is not a mechanical lock. If you need to hold a load without live pressure, you must add a pilot-operated check valve or an external rod brake.
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.