The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X75-10S 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, 75mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X75-10S is a double-acting, single-rod pneumatic cylinder offering a 10 mm field-adjustable stroke range via a rear-cap screw, letting you fine-tune the end position without swapping the unit. With a 63 mm bore and 20 mm rod, it delivers 1559 N of push force at 0.5 MPa, scaling up to 2805 N at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors along the tie-rod barrel for precise end-of-stroke detection. The body length A is 197 mm, and the standard cushion length is 28 mm, providing reliable deceleration for the 75 mm nominal stroke.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X75-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 75 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. |
| ×75 | 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 commissioning, the 10 mm adjusting screw allows engineers to dial in the exact stroke end position for grippers or stops, compensating for minor assembly tolerances without re-machining brackets.
In clamping fixtures, the adjustable stroke compensates for pad wear over time. The operator can extend the stroke end by up to 10 mm to maintain consistent clamping force, extending the life of consumable contact pads.
On packaging lines, the SCJ63X75-10S can push different box sizes against a backstop. Adjusting the stroke end by a few millimeters accommodates a new product format without stopping production to replace the cylinder.
Choose the SCJ63 bore when your application needs around 1560 N of push force at standard plant air; for lighter loads, stepping down to the SCJ50 bore provides 982 N of push. If your stroke never needs field adjustment, the fixed-stroke SC63 cylinder is a simpler, more cost-effective alternative. For guided loads, consider pairing this with an external guide rail to manage side forces.
As a direct replacement, match the 63 mm bore, 75 mm nominal stroke, 10 mm adjustable range, PT port thread, and the built-in magnet. This basic-mount version accepts the FA front flange or LB foot bracket from the SCJ mounting subset; the F-SC63FA and F-SC63LB kits bolt on without modifying the cylinder body.
Adjustable-stroke checklist
A screw in the rear cap limits how far the piston can retract, effectively shortening the stroke end by up to 10 mm from the nominal 75 mm. This sets the final position of the rod in the retract direction, allowing fine mechanical adjustment without changing air pressure or flow controls.
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N (reduced due to the 20 mm rod area). At the maximum operating pressure of 0.9 MPa, the push force reaches 2805 N. The adjustable stroke screw does not alter the cylinder's force output.
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