The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X150-100TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø40mm bore, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X150-100TC is a 40 mm bore double-acting, single-rod pneumatic cylinder with a field-adjustable stroke. A rear-cap adjusting screw provides up to 100 mm of stroke-end reduction, letting you fine-tune the 150 mm nominal stroke without changing the cylinder body. This model is configured with a centre trunnion (TC) mount for pivoting applications.
At 0.5 MPa it delivers 628 N push and 528 N pull force, using a 16 mm diameter piston rod. The PT1/4 port and M12x1.25 rod thread connect easily into standard pneumatic circuits. With a 21 mm air cushion and a body length A of 185 mm, it is a compact solution for commissioning adjustments, format changeovers, or wear take-up on automated equipment.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X150-100TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 100 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. |
| ×150 | Nominal (maximum) stroke length in mm. |
| -100 | 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.
The 100 mm rear adjustment screw allows engineers to quickly dial in the exact stroke end position during machine commissioning without swapping shims or hard stops.
On packaging lines, the adjustable stroke lets operators reset a pusher or diverter stroke in minutes when switching between different product sizes, reducing downtime.
In clamping or pressing fixtures, the stroke can be incrementally extended over time to compensate for pad wear, maintaining consistent clamping force without replacing the cylinder.
Choose this 40 mm bore when 628 N of push force at 0.5 MPa meets your load requirement. If you need more force, step up to the 50 mm bore SCJ50 series which provides 982 N push at the same pressure. For purely fixed-stroke applications where no field adjustment is needed, the standard SC40X150 cylinder is a simpler, cost-effective alternative.
This is a direct replacement for an existing AirTAC SCJ40X150-100TC cylinder. Ensure the replacement matches the 40 mm bore, 150 mm nominal stroke, 100 mm adjust range, PT port thread, and centre trunnion mounting (F-SC40TC bracket). For strokes of 300 mm or longer, evaluate side-loading on the 16 mm rod; an external guide or a guided cylinder may be required to prevent rod bending.
Adjustable-stroke checklist
At the standard operating pressure of 0.5 MPa, this cylinder provides 628 N of push force and 528 N of pull force. The maximum push force at 0.9 MPa is 1130 N. The theoretical force at 1.0 MPa is 128 kgf.
No. The SCJ series is a standard double-acting cylinder and will not hold its position if air pressure is lost or the valve is centered. The rear adjusting screw only sets the stroke end point; it is not a mechanical lock. For load holding, you must add an external rod brake or a pilot-operated check valve.
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