The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X600-40STC 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. Ø40mm bore, 600mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X600-40STC provides a nominal 600 mm stroke with a rear adjusting screw that shortens the stroke end by up to 40 mm, giving you a true field-adjustable range from 560 to 600 mm. This single-rod, double-acting cylinder delivers 628 N of push force and 528 N of pull force at 0.5 MPa, driven by a 16 mm diameter piston rod with an M12x1.25 thread.
At 0.9 MPa, the push thrust reaches 1130 N, and the cylinder body length A(SCJ) is 185 mm plus stroke, with a 21 mm air cushion to decelerate the piston smoothly. The built-in magnet enables CMSG/DMSG/EMSG sensors, and the TC centre trunnion mount (F-SC40TC with TCM1 bracket) handles pivoting loads.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X600-40STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 600 mm |
| Stroke adjustment | Up to 40 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1200 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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. |
|---|---|
| 40 | Bore size in mm. |
| ×600 | 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.
Quickly dial in a new stroke end position for different product sizes on packaging or assembly machines, reducing downtime between batches.
On a long-stroke 600 mm conveyor stop, the 40 mm adjust range takes up pad wear without replacing the cylinder or adding shims.
During machine setup, the adjustable screw lets you experimentally find the optimal 560-600 mm stroke end for a new tooling cycle.
Choose the SCJ40X600-40STC when you need to fine-tune the stroke end on a 40 mm bore machine axis without swapping cylinders. If your load requires more force, step up to the 50 mm bore, which provides 982 N of push force at 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC40 cylinder is a simpler alternative. At 600 mm of stroke, ensure the rod is guided externally or use a guided cylinder to prevent bending under side loads. This model directly replaces another AirTAC SCJ40 with a 600 mm nominal stroke, 40 mm adjust range, PT ports, TC mount, and magnet sensor.
Adjustable-stroke checklist
At 0.5 MPa, it produces 628 N of push force (full bore area) and 528 N of pull force (rod-side area). At the maximum operating pressure of 1.0 MPa, the theoretical push force is 1280 N.
A screw in the rear cap limits the piston's retraction, shortening the stroke end by up to 40 mm. The 600 mm nominal stroke is the maximum; you can set any effective stroke from 560 to 600 mm in the field.
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