The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X170-30S 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. Ø63mm bore, 170mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X170-30S is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that lets you fine-tune the stroke end position within a 30 mm range. This 63 mm bore model delivers a push force of 1559 N at 0.5 MPa and 2805 N at the maximum operating pressure of 0.9 MPa, making it a robust choice for mid-range industrial tasks where a precise, field-adjustable stroke is required.
Equipped with a built-in magnet (-S suffix), it is ready for CMSG, DMSG, or EMSG reed and solid-state sensors to be clamped directly onto the tie-rod barrel for reliable end-of-stroke detection. The 20 mm piston rod, PT1/4 ports, and a 28 mm air cushion ensure smooth deceleration, while the 197 mm body length (A dimension) keeps the package compact for its force class.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X170-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 170 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 28 mm |
| Max stroke | Up to 1500 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | Bore size in mm. |
| ×170 | 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.
During machine commissioning, the 30 mm adjustment screw allows engineers to dial in the exact stroke end position for a new product format or tooling setup without needing to re-machine mounting brackets or swap out cylinders.
In a pneumatic clamping fixture, the adjustable stroke can compensate for the gradual wear of contact pads over time. The stroke end can be extended slightly to maintain consistent clamping force without replacing the pads immediately.
For a part ejection station, the SCJ63X170-30S can be fine-tuned to push a component exactly 170 mm, or slightly less, to prevent damage. The built-in magnet provides a clean sensor signal to confirm each ejection cycle.
Select the SCJ63X170-30S when your application needs a 170 mm nominal stroke that can be shortened by up to 30 mm directly on the machine, without swapping the cylinder. If you require more force, stepping up to the 80 mm bore provides 2513 N of push at 0.5 MPa; for a lighter, more compact solution, the 50 mm bore offers 982 N. For applications where the stroke length will never change, a fixed-stroke SC63X170 cylinder is a simpler, more cost-effective alternative.
This model is a direct replacement for another AirTAC SCJ63 cylinder with a 170 mm nominal stroke, 30 mm adjustment range, PT ports, basic mounting, and a magnet. If your load creates a significant side force or the rod is fully extended, consider adding an external guide rail or switching to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. The push force is higher because the single rod reduces the effective piston area on the return stroke. At the maximum operating pressure of 0.9 MPa, the push force reaches 2805 N.
Yes, if you need the ability to fine-tune the stroke end. The SCJ63X170-30S is dimensionally compatible with the SC series for the same bore and mounting, but the body is slightly longer to accommodate the adjusting screw. Ensure your machine has clearance for the 197 mm body length and that the 30 mm adjustment range covers your stroke variation needs.
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.