The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X160-40 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø63mm bore, 160mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X160-40 is a double-acting, single-rod pneumatic cylinder that integrates a rear-cap adjusting screw, giving you up to 40 mm of field-adjustable stroke-end control without removing the cylinder from the machine. At 0.5 MPa, it delivers 1559 N of push force and 1402 N of pull force, making it a practical choice for mid-range clamping, pressing, and positioning tasks where the final stop position needs fine-tuning during commissioning or changeover.
This 63 mm bore model uses a 20 mm diameter piston rod with an M16x1.5 thread and PT1/4 ports. The adjustable air cushion is 28 mm long, and the body length A(SCJ) is 197 mm. It operates on filtered air from 0.15 to 1.0 MPa and handles speeds from 30 to 800 mm/s, suiting a wide range of general automation duties.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X160-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 40 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. |
| -40 | 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.
Dial in the exact end-stop position during machine setup without swapping cylinders or machining external hard stops, saving hours of mechanical adjustment time.
Quickly adjust the stroke end for different product sizes on a packaging or sorting line, letting a single cylinder handle multiple formats with a simple screw adjustment.
Take up mechanical play or tooling wear over time by advancing the stroke end, maintaining consistent contact or pressing force without replacing the actuator.
Choose the SCJ63 when you need a 63 mm bore cylinder that lets you dial in the stroke end precisely. If your force requirement is lower, the 50 mm bore SCJ50 provides 982 N of push force at 0.5 MPa; for a step up, the 80 mm bore SCJ80 delivers 2513 N. If the stroke never needs adjustment, the fixed-stroke SC63 is a simpler, more compact alternative. For a direct replacement, match the 63 mm bore, 160 mm nominal stroke, 40 mm adjust range, PT port thread, and the specific mounting style. At this 160 mm stroke, the rod is well-supported, but if you are applying a significant side load, consider adding an external guide rail to prevent rod bending.
Adjustable-stroke checklist
The rear adjusting screw shortens the stroke end by up to 40 mm from the nominal 160 mm maximum. It sets a new mechanical stop position for the piston, letting you fine-tune the extension length without affecting the cylinder's bore size or force output.
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. The pull force is lower because the rod reduces the effective piston area on the return stroke. At the maximum operating pressure of 0.9 MPa, the push force reaches 2805 N.
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