The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X160-20S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø63mm bore, 160mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The AirTAC SCJ63X160-20S is a double-acting, single-rod pneumatic cylinder featuring a rear-cap adjusting screw that provides up to 20 mm of field-adjustable stroke-end reduction. This allows fine-tuning of the piston's stop position without removing the cylinder, ideal for commissioning and format changes. With a 63 mm bore and 20 mm rod, it delivers 1559 N of push force at 0.5 MPa, handling substantial mid-range linear tasks.
The built-in magnet (denoted by the -S suffix) allows direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for reliable end-of-stroke detection. The cylinder uses a PT1/4 port, M16x1.5 rod thread, and a 28 mm air cushion for smooth deceleration. Its body length A(SCJ) is 197 mm, making it compact for its 160 mm nominal stroke.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X160-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 20 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. |
| ×160 | Nominal (maximum) stroke length in mm. |
| -20 | 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.
Fine-tune the final position of a clamp or press tool during initial machine setup by adjusting the rear screw, eliminating the need to fabricate custom mechanical stops.
Quickly adjust the stroke end for a diverter gate or pusher on a packaging line to handle different box sizes, reducing changeover time from minutes to seconds.
Take up mechanical slack or wear in a linkage or gripper mechanism over time by slightly extending the effective stroke via the adjusting screw, maintaining consistent operation.
Choose the SCJ63X160-20S when your application requires a 160 mm maximum stroke but needs the flexibility to shorten the end position by up to 20 mm during setup. If your force requirements are lower, stepping down to a 50 mm bore (982 N push at 0.5 MPa) can reduce air consumption. For higher force, the 80 mm bore provides 2513 N of push force. This model is a direct replacement for another AirTAC SCJ63X160-20S cylinder with a PT port and built-in magnet. For a fixed, non-adjustable stroke, consider the standard SC63X160-S cylinder. For strokes of 300 mm or more, evaluate side-loading and rod bending; an external guide or a guided cylinder may be necessary to protect the rod bearing.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, this cylinder provides 1559 N of push force and 1402 N of pull force. The push force is higher because the single rod reduces the effective piston area on the return stroke. The maximum push force at 0.9 MPa is 2805 N.
Yes. The -S suffix in the model code SCJ63X160-20S indicates a built-in magnetic piston. This allows you to clamp compatible AirTAC CMSG, DMSG, or EMSG sensors directly onto the cylinder's tie-rod barrel to detect piston position without additional brackets.
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