The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X700-100S 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, 700mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X700-100S is a double-acting, single-rod pneumatic cylinder with a 100 mm rear-cap adjusting screw, allowing you to fine-tune the stroke end position without removing the cylinder from the machine. Its 63 mm bore delivers a push force of 1559 N at 0.5 MPa, scaling up to 2805 N at 0.9 MPa, making it a robust choice for medium-duty automation tasks.
This model features a built-in magnet, enabling direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors for precise end-of-stroke detection. The 20 mm piston rod and PT1/4 ports are standard for this bore, while the 28 mm air cushion provides smooth deceleration over the full 700 mm nominal stroke, which is well within the 1500 mm maximum for the 63 bore.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X700-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 700 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. |
| ×700 | 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 range allows technicians to dial in the exact stroke end-stop during initial machine commissioning, compensating for minor assembly tolerances without needing to swap out the cylinder.
On a packaging line, the adjustable stroke lets operators quickly change the pusher's end position to handle different box sizes, reducing downtime between production runs.
In clamping or pressing applications, the adjusting screw can be used to take up mechanical wear on tooling or contact surfaces over time, maintaining consistent clamping force without reprogramming.
Select the SCJ63 when you need a force step up from the 40 mm bore, which provides 628 N of push at 0.5 MPa. If your application does not require field-adjustable stroke, the fixed-stroke SC63X700 is a simpler, more cost-effective alternative. For this model, a direct replacement must match the 63 mm bore, 700 mm nominal stroke, 100 mm adjust range, PT ports, and the built-in magnet.
For a 700 mm stroke, be mindful of side-loading. Ensure the load is guided externally, or consider switching to a guided cylinder if the rod is subject to significant lateral forces, to prevent rod bending and premature seal wear. The basic mounting configuration requires you to provide your own mounting brackets from the F-SC63 accessory series.
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 due to the area of the 20 mm piston rod.
A screw in the rear cap limits how far the piston can retract. Turning the screw shortens the stroke end by up to 100 mm from the nominal 700 mm maximum. It sets a new mechanical stop for the retract stroke and does not affect the extend force or speed.
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