The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X200-40S 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, 200mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X200-40S is a single-rod double-acting pneumatic cylinder with a 40 mm bore and a 200 mm nominal stroke, featuring a rear-cap adjusting screw that provides up to 40 mm of field-adjustable stroke-end reduction. With a 16 mm diameter piston rod, PT1/4 ports, and an M12x1.25 rod thread, it delivers 628 N of push force at 0.5 MPa, making it a versatile workhorse for medium-duty linear positioning tasks.
This model includes a built-in magnet (-S), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for precise end-of-stroke or mid-stroke position feedback. The adjustable cushion decelerates the piston smoothly, and the 185 mm body length (A dimension) provides a compact footprint for the force class, ideal where stroke tuning is needed during commissioning or format changes.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X200-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 200 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. |
| ×200 | 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.
Allows engineers to dial in the exact stroke end position on a new machine during initial setup without swapping cylinders or machining custom stops, saving hours of mechanical adjustment.
In clamping or pressing fixtures, the 40 mm adjustment range can compensate for tooling wear or material thickness variations over time, maintaining consistent clamping force without reprogramming.
On packaging or sorting lines, operators can quickly adjust the stroke to handle different product sizes, reducing changeover time between batches with a simple screw adjustment.
Choose this 40 mm bore when the 32 mm bore's 402 N push at 0.5 MPa is insufficient, but the larger 50 mm bore's 982 N is overkill for your load. The 40 mm adjust range allows operators to fine-tune the stroke end by hand, eliminating the need for external hard stops. For applications requiring a fixed, non-adjustable stroke, the standard SC40X200 is a direct alternative.
This cylinder is a direct replacement for an existing AirTAC SCJ40X200-40S with a PT port and basic mount. For sensorless applications, order SCJ40X200-40. At a 200 mm stroke, ensure the rod is guided if significant side loads are present, or consider pairing it with an external linear guide to prevent rod bending and premature seal wear.
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. The pull force is lower due to the 16 mm rod reducing the effective piston area on the return stroke.
Yes, if you need the adjustable stroke feature. The SCJ40X200-40S shares the same bore, rod, and port dimensions as the SC40X200, but the body length is slightly longer to accommodate the adjusting screw mechanism. Ensure your mounting arrangement has clearance for the rear screw assembly.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.