The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X700-100 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 AirTAC SCJ63X700-100 is a double-acting, single-rod pneumatic cylinder engineered for applications demanding a long 700 mm nominal stroke with precise, field-adjustable end-position tuning. The rear-cap adjusting screw provides a full 100 mm of stroke-end reduction, allowing commissioning engineers to dial in the exact stopping point without altering the cylinder's mounting or adding external hard stops. With a 20 mm diameter piston rod and PT1/4 ports, it delivers a substantial 1559 N of push force at 0.5 MPa, scaling up to 2805 N at the maximum operating pressure of 0.9 MPa.
This tie-rod cylinder features a 28 mm air cushion for smooth, controlled deceleration of high-inertia loads, protecting the end caps over millions of cycles. The SCJ63 body length (A dimension) is 197 mm, making it a compact solution for its force class. Its adjustable-stroke design is ideal for format changeovers on packaging lines, take-up of wear in clamping fixtures, or fine-tuning the stroke during initial machine commissioning.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X700-100 |
|---|---|
| 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.
Quickly adjust the push stroke for different box or pallet sizes on a packaging line without mechanical modifications, minimizing downtime between product runs.
Fine-tune the clamping position on a welding or assembly fixture to compensate for part tolerance variations or jaw wear over time, ensuring consistent pressure.
Provides a 700 mm reach with a 100 mm tuning window for positioning heavy tooling or diverting products on a conveyor, where the exact end-stop is critical for alignment.
Select the SCJ63 when your application requires a robust, mid-range force actuator with the flexibility to fine-tune the stroke end by up to 100 mm on the machine. If 1559 N of push force at standard shop air is insufficient, stepping up to the SCJ80 bore provides 2513 N of push force at the same 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC63 series is a direct alternative with identical force characteristics. For a direct replacement, match the 63 mm bore, 700 mm nominal stroke, 100 mm adjust range, PT port thread, and basic mounting. At this 700 mm stroke length, ensure the rod is adequately supported against side loads; consider adding an external guide rail or switching to a guided cylinder if the load is not perfectly axial.
Adjustable-stroke checklist
The theoretical push force is 1559 N at 0.5 MPa and 2805 N at the maximum operating pressure of 0.9 MPa. The pull force on the retract stroke is lower at 1402 N at 0.5 MPa due to the 20 mm piston rod reducing the effective piston area.
A screw mechanism in the rear end cap allows you to shorten the stroke end position by up to 100 mm. This sets a new mechanical stop for the piston, enabling you to fine-tune the cylinder's extended length in the field without changing the 700 mm nominal stroke rating or the cylinder body.
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