The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X260-30STC 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, 260mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X260-30STC puts 1559 N of push force at 0.5 MPa into a 63 mm bore with a 20 mm single rod, and the rear adjusting screw lets you shorten the stroke end by up to 30 mm without removing the cylinder from the machine. That field-adjustable range is invaluable during commissioning, format changeovers, or when a mechanical stop wears and needs a quick take-up.
This model ships with a built-in magnet (S) so CMSG/DMSG/EMSG sensors clamp directly onto the tie-rod barrel for non-contact position sensing, and the TC centre trunnion mount (supplied with the TCM1 bracket, order code F-SC63TC) allows the cylinder to pivot as it strokes. The 28 mm air cushion at each end decelerates the piston, and the PT1/4 ports keep the plumbing compact for a mid-bore actuator that delivers 2805 N of push thrust at the maximum 0.9 MPa operating pressure.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X260-30STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 260 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. |
| ×260 | 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 setup, the 30 mm rear screw lets technicians dial in the exact stroke end position without swapping cylinders or machining external stops, speeding up the commissioning process.
On a packaging line that handles multiple product sizes, operators can quickly adjust the stroke end to match a new box height or pallet dimension, minimising downtime between batches.
In clamping or pressing fixtures, the adjustable stroke compensates for tooling wear or material thickness variation over time, maintaining consistent clamp force without reprogramming the PLC.
Step up to the 80 mm bore if your application needs more than the 1559 N push force this 63 mm bore provides at 0.5 MPa—the SCJ80 delivers 2513 N at the same pressure. If you never need to fine-tune the stroke end on the machine, the fixed-stroke SC63 is a simpler, slightly shorter alternative. For a drop-in replacement, match the 63 mm bore, 260 mm nominal stroke, 30 mm adjust range, PT port thread, TC centre trunnion mounting, and the -S magnet option.
At a 260 mm stroke, the single rod is well supported, but if the load applies a significant side force, add an external linear guide or switch to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At 0.5 MPa, it delivers 1559 N pushing and 1402 N pulling (the pull force is lower because the 20 mm rod reduces the effective piston area on the return stroke). The maximum push force at 0.9 MPa is 2805 N.
Yes, if the original is a 63 mm bore SCJ with a 260 mm nominal stroke, 30 mm adjust range, PT ports, TC centre trunnion mount, and a magnet. The F-SC63TC trunnion bracket and TCM1 are included. Always verify the mounting footprint and port size before ordering.
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