The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X175-100 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, 175mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X175-100 provides a nominal 175mm stroke with a generous 100mm rear adjustment range, letting you dial in the exact stroke end position without swapping the cylinder. Its 40mm bore delivers 628 N of push force at 0.5 MPa, making it a versatile workhorse for medium-duty automation tasks.
This model uses a 16 mm diameter piston rod and PT1/4 ports. The body length A(SCJ) is 185 mm, and it features a 21 mm air cushion for smooth deceleration. The adjustable screw shortens the stroke end by up to 100 mm, ideal for commissioning trials or format changeovers where the stop position needs frequent tweaking.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X175-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 175 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. |
| ×175 | 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 100mm adjustment range allows technicians to fine-tune the end position during initial machine setup, compensating for assembly tolerances without needing to cut and re-thread a rod.
Quickly adapt the stroke for different product sizes on a packaging line. The rear screw adjustment makes switching between short and long formats a tool-free operation.
As tooling or gripper pads wear down over time, the stroke end can be extended slightly via the adjusting screw to maintain consistent contact pressure and part engagement.
Choose this 40mm bore when your application needs around 628 N of push force at standard plant air. If you require more force, stepping up to the 50mm bore provides 982 N push. For applications where the stroke is fixed after setup, the standard SC series offers a simpler, more cost-effective option. This SCJ model is a direct replacement for any AirTAC SCJ40 with a 175mm nominal stroke and a 100mm adjust range, using PT threads and basic mounting.
Adjustable-stroke checklist
At 0.5 MPa, it generates 628 N of push force and 528 N of pull force. The maximum push force at 0.9 MPa is 1130 N. The adjustable stroke mechanism does not alter the cylinder's force output.
Yes, if you need the 100mm stroke-end adjustment. The SCJ shares the same mounting footprint and port size (PT1/4) as the standard SC series, but the overall body length is slightly longer to accommodate the adjusting screw.
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