The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X200-30 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø63mm bore, 200mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X200-30 is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides up to 30 mm of field-adjustable stroke-end control. At 0.5 MPa, it delivers 1559 N of push force and 1402 N of pull force, making it a solid mid-range actuator for tasks that need on-machine fine-tuning without swapping the cylinder.
This tie-rod cylinder uses a 20 mm piston rod, PT1/4 ports, and an M16x1.5 rod thread. The adjustable air cushion is 28 mm long, and the SCJ body length A is 197 mm. The screw only sets the stroke end position within the 30 mm range; it does not alter the cylinder's force output or speed capability.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X200-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 200 mm |
| Stroke adjustment | Up to 30 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. |
| ×200 | Nominal (maximum) stroke length in mm. |
| -30 | 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.
Technicians can fine-tune the stroke end position by up to 30 mm on the machine, eliminating the need to fabricate shims or swap cylinders during initial equipment setup and debugging.
On packaging or sorting lines, the adjustable stroke allows operators to quickly adapt the cylinder's end-stop for different product sizes or box formats, reducing downtime between production runs.
In clamping or pressing fixtures, the 30 mm adjustment range can be used to take up mechanical wear on tooling or contact surfaces over time, maintaining consistent clamping force and position.
Choose the SCJ63X200-30 when your application requires a 200 mm nominal stroke that can be precisely shortened by up to 30 mm during commissioning or changeovers. If you need more force, step up to the 80 mm bore, which provides 2513 N of push at 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC63X200 is a simpler alternative. This cylinder is a direct replacement for another AirTAC SCJ63X200-30 with PT ports and basic mounting. For strokes of 200 mm, side-loading is generally manageable, but if the rod is subjected to significant radial forces, consider adding an external guide rail to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. The maximum push force at the 0.9 MPa operating limit is 2805 N. The pull force is lower because the piston rod reduces the effective area on the return stroke.
A rear-cap adjusting screw lets you shorten the stroke end by up to 30 mm. Pick the SCJ when you need to fine-tune the end position on the machine for setup, format changes, or wear take-up. If your stroke length is permanently fixed and never needs adjustment, the standard SC63 series is a more cost-effective choice.
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