The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X600-30S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø63mm bore, 600mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X600-30S is a double-acting, single-rod pneumatic cylinder from AirTAC's tie-rod series, engineered for applications requiring precise, field-adjustable stroke-end positioning. With a 63 mm bore and a nominal 600 mm stroke, its rear-cap adjusting screw provides a 30 mm range to fine-tune the piston's end point, making it ideal for commissioning trials, format changeovers, or compensating for mechanical wear without replacing the cylinder. The integrated magnet allows direct mounting of CMSG/DMSG/EMSG sensors for reliable end-of-stroke detection.
This model delivers a push force of 1559 N at 0.5 MPa and a pull force of 1402 N, with a maximum push force reaching 2805 N at 0.9 MPa. It features a 20 mm diameter piston rod, PT1/4 ports, and an M16x1.5 rod thread. The cylinder includes an adjustable air cushion (28 mm length) for smooth deceleration and operates on 40 µm filtered air within a pressure range of 0.15-1.0 MPa and a standard temperature range of -20 to +70 °C.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X600-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 600 mm |
| Stroke adjustment | Up to 30 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. |
| ×600 | Nominal (maximum) stroke length in mm. |
| -30 | 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.
On a packaging line handling different box sizes, the SCJ63X600-30S acts as a pneumatic stop gate. The 30 mm adjustment range allows operators to quickly fine-tune the gate's retraction point for each product format, eliminating the need for mechanical shims or custom hard stops.
In an automated assembly cell, this cylinder drives a pressing tool. The rear adjusting screw is used during setup to dial in the exact final press depth within a 30 mm window, ensuring consistent joint quality and compensating for part tolerance stack-up.
Used to position a fence on a lumber saw, the SCJ63X600-30S provides the long 600 mm stroke needed to clear the work area. The adjustable stroke end allows the operator to compensate for blade wear or change the cut width for different lumber dimensions without complex reprogramming.
Select the SCJ63X600-30S when you need a robust 63 mm bore cylinder with a long 600 mm reach and the ability to dial in the stroke end precisely within a 30 mm window. If your force requirement is lower, stepping down to the 50 mm bore SCJ50 series provides 982 N of push force at 0.5 MPa. For applications where the stroke is fixed and never needs adjustment, the standard SC63X600 fixed-stroke cylinder is a more economical alternative. This SCJ63X600-30S is a direct replacement for any AirTAC SCJ63X600-30S cylinder with a basic mount, PT ports, and a magnet.
Given the 600 mm stroke, carefully evaluate side-loading conditions, as the extended rod is susceptible to bending under high radial forces. For applications with significant side loads, consider pairing this cylinder with an external linear guide or selecting an AirTAC guided cylinder series instead of relying solely on the rod's bearing to manage the load.
Adjustable-stroke checklist
The '30' in the model code indicates a 30 mm adjustable range. A screw mechanism in the rear cap allows you to shorten the cylinder's stroke end by up to 30 mm from its nominal 600 mm maximum. This is a mechanical stroke limiter, not a force or speed control. Turning the screw changes the physical stopping point of the piston, allowing for precise, on-machine tuning.
At the standard operating pressure of 0.5 MPa, the SCJ63X600-30S generates a push force of 1559 N and a pull force of 1402 N. The pull force is lower due to the area of the 20 mm piston rod. The maximum push force at the 0.9 MPa operating limit is 2805 N. For applications requiring equal force in both directions, consider the SCD double-rod series.
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