The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X100-75SLB is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø63mm bore, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The AirTAC SCJ63X100-75SLB is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, providing a 75 mm adjustment range on its 100 mm nominal stroke. This 63 mm bore unit delivers 1559 N of push force at 0.5 MPa, making it suitable for medium-duty positioning tasks where the end stop must be fine-tuned during commissioning or changeovers.
This model is factory-equipped with a built-in magnet (S) for direct mounting of CMSG/DMSG sensors and an LB-style foot mount for stable axial surface installation. The 20 mm piston rod, PT1/4 ports, and 28 mm air cushion ensure reliable deceleration, while the tie-rod construction keeps the design robust and serviceable.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X100-75SLB |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 100 mm |
| Stroke adjustment | Up to 75 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. |
| ×100 | Nominal (maximum) stroke length in mm. |
| -75 | 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 dial in a new end position for packaging machinery when switching between product sizes, eliminating the need for mechanical stop adjustments.
Fine-tune the actuator stroke on new automated assembly fixtures to achieve perfect part alignment without swapping cylinders.
Adjust the stroke end to take up mechanical play or seal wear in clamping and pressing operations, maintaining consistent process quality over time.
Choose the SCJ63X100-75SLB when you need a 63 mm bore with a 100 mm stroke that can be shortened by up to 75 mm from the rear cap. If you require more force, stepping up to an 80 mm bore provides 2513 N of push at 0.5 MPa. For applications where the stroke length never changes, a fixed-stroke SC63X100 cylinder offers a more compact body length.
This is a direct replacement for an AirTAC SCJ63X100-75 cylinder with an S magnet and LB foot mount, using PT threads. For strokes of 300 mm or more, consider an external guide or a guided cylinder to protect the 20 mm rod from side-load deflection and ensure long seal life.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, this cylinder generates 1559 N of push force and 1402 N of pull force. The maximum push force at 0.9 MPa is 2805 N.
Yes. The 'S' in the model code indicates a built-in magnet, making it fully compatible with AirTAC CMSG, DMSG, and EMSG series reed and solid-state sensors that clamp directly onto the cylinder barrel.
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