The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X150-75SFA 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, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X150-75SFA is a double-acting, single-rod AirTAC cylinder with a 75 mm field-adjustable stroke range, letting you fine-tune the end position without swapping the unit. Its 63 mm bore delivers 1559 N of push force at 0.5 MPa, driven by a 20 mm rod through PT1/4 ports.
This model includes a built-in magnet for CMSG/DMSG sensors and an FA front rectangular flange for direct panel mounting. The 28 mm air cushion decelerates the piston smoothly, and the tie-rod body is 197 mm long, suiting it to format changeovers and commissioning trials.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X150-75SFA |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 150 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. |
| ×150 | 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 adjust the stroke end by up to 75 mm when switching product sizes on packaging or assembly machines, eliminating manual stop repositioning.
Fine-tune the actuator's end point during machine setup and debugging without swapping cylinders or machining custom stops.
Take up mechanical play or tooling wear over time by advancing the rear adjusting screw to maintain precise end positions.
Choose the SCJ63 when 1559 N push at 0.5 MPa fits your load. If you need more force, step up to the 80 mm bore for 2513 N push; for a lighter, more compact unit, the 50 mm bore provides 982 N. The 75 mm adjustment range is ideal for machines that undergo frequent product changeovers. For fixed-stroke applications, the standard SC series is a simpler alternative. This cylinder replaces any SCJ63 with a 150 mm nominal stroke, 75 mm adjust, PT ports, FA mount, and magnet. At 150 mm of stroke, rod bending is minimal, but for off-axis loads, an external guide rail is recommended.
Adjustable-stroke checklist
At 0.5 MPa, it pushes with 1559 N and pulls with 1402 N. The force increases linearly with pressure up to a maximum operating push of 2805 N at 0.9 MPa.
Yes. The -S suffix indicates a built-in magnet, so you can directly clamp CMSG, DMSG, or EMSG reed or solid-state sensors onto the barrel to detect piston position.
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