The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X160-30TC 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. Ø40mm bore, 160mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X160-30 is a double-acting, single-rod pneumatic cylinder that puts field-adjustable stroke control directly on the machine. A rear-cap adjusting screw lets you shorten the stroke end by up to 30 mm without removing the cylinder, making it ideal for commissioning trials, format changeovers, and wear take-up on packaging or assembly fixtures. With a 40 mm bore, it delivers 628 N of push force at 0.5 MPa and 1130 N at 0.9 MPa, while the 16 mm piston rod provides solid rigidity for the 160 mm nominal stroke.
This model is configured with a centre trunnion (TC) mount, supplied with the TCM1 bracket under part code F-SC40TC, allowing the cylinder to pivot and absorb angular misalignment in swinging-arm or lever-driven mechanisms. The body length A(SCJ) is 185 mm, slightly longer than a fixed-stroke SC of the same bore to house the adjusting mechanism. It uses PT1/4 ports, an M12x1.25 rod thread, and a 21 mm air cushion for smooth deceleration. Operating on 40 µm filtered air from 0.15 to 1.0 MPa, the standard TPU seals cover -20 to +70 °C.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X160-30TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 30 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. |
| ×160 | 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.
Quickly dial in a new end position for different product sizes on a packaging line without stopping production to swap cylinders or add hard stops.
Fine-tune the retract position of a part stop on a conveyor to handle a family of components, using the 30 mm adjustment to set the precise stopping point.
Adjust the stroke end to set a consistent clamping gap or pressing depth, compensating for tooling wear or material thickness variations over long production runs.
Choose the SCJ40 bore when your load needs up to 628 N of push force at standard plant air. If the application demands more force, step up to the SCJ50 series, which provides 982 N push at 0.5 MPa. For lighter, faster cycles, the SCJ32 delivers 402 N push. The 30 mm adjustable range on this model is a good fit for processes that need frequent fine-tuning of the end stop, such as clamping different workpiece thicknesses. If your stroke is fixed and never changes, the standard SC40 series offers the same force and mounting options without the adjusting screw, potentially at a lower cost.
For a 160 mm stroke, side-loading and rod bending must be managed. Always align the load axially with the rod, and if any radial force is present, add an external guide rail or switch to a guided cylinder. This SCJ40X160-30TC is a direct replacement for an existing AirTAC SCJ adjustable-stroke cylinder of the same 40 mm bore, 160 mm nominal stroke, 30 mm adjust range, PT port thread, and TC centre trunnion mount.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 1130 N. Because this is a single-rod cylinder, the push force is always greater than the pull force due to the rod area on the piston.
A rear-cap screw sets the stroke end position within a 30 mm range, shortening the 160 mm nominal stroke. Pick the SCJ when you need to fine-tune the end stop on the machine for commissioning, format changes, or wear compensation. Choose a fixed-stroke SC if the stroke length is permanently fixed and never needs field adjustment.
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