The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X200-30H 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 SCJ63X200-30H is a double-acting, single-rod pneumatic cylinder that provides a nominal 200mm stroke, field-trimmable by up to 30mm via a rear-cap adjusting screw. This lets commissioning engineers dial in the exact stroke end position without swapping the cylinder or adding hard stops. At 0.5 MPa it delivers 1559 N push and 1402 N pull, and its 20mm rod diameter suits moderate side-load applications.
This variant is fitted with Viton (FKM) seals, extending the operating temperature range to 0–150 °C for hot or chemically aggressive environments. The 63mm bore body has a 197mm base length (A dimension) and uses a 28mm air cushion to decelerate the piston quietly. Ports are PT1/4 with an M16×1.5 rod thread, and the maximum standard stroke for this bore is 1500mm.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X200-30H |
|---|---|
| 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.
During machine bring-up, technicians adjust the rear screw to fine-tune the actuator's end position by up to 30mm, eliminating the need to fabricate custom shims or mechanical stops.
The Viton seals allow this cylinder to operate continuously in ovens, autoclaves, or foundry equipment where ambient temperatures reach 150°C, unlike standard TPU seals.
On high-cycle packaging lines, operators periodically dial the screw inward to compensate for gripper pad wear, maintaining precise pick-and-place registration without downtime for cylinder swaps.
Choose the SCJ63 when your load needs roughly 1560 N of push force at standard plant air; the 50mm bore delivers only 982 N, while stepping up to an 80mm bore provides 2513 N. The adjustable-stroke screw is ideal for format changeovers or wear take-up, but if your stroke is fixed and never needs field trimming, the simpler SC63 fixed-stroke cylinder saves cost. For a direct replacement, match the 63mm bore, 200mm nominal stroke, 30mm adjust range, PT ports, basic mounting, and the Viton seal suffix (-H). At 200mm stroke, rod buckling is rarely a concern, but if the load applies significant side force, add an external guide rail or switch to a guided cylinder.
Adjustable-stroke checklist
At 0.5 MPa the push force is 1559 N and the pull force is 1402 N (reduced by the 20mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 2805 N. The theoretical force at 1.0 MPa is 318 kgf.
Yes, provided the mounting style and port thread match. The SCJ63 body is slightly longer to house the adjusting screw, but the bore, rod, and port dimensions are identical. Ensure the 30mm adjustment range covers your required stroke variation.
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