The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X450-10 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø63mm bore, 450mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X450-10 is a double-acting, single-rod pneumatic cylinder that puts 1559 N of push force at 0.5 MPa behind a 450 mm nominal stroke, with a rear-cap adjusting screw that lets you shorten the stroke end by up to 10 mm without swapping the cylinder. Its 20 mm diameter piston rod and 28 mm air cushion work together to handle mid-range positioning tasks where a small, precise end-stop tweak is needed during commissioning or after tooling wear.
This 63 mm bore tie-rod cylinder uses a PT1/4 port and an M16x1.5 rod thread, with a body length A of 197 mm. The adjustable screw only sets the stroke end position—it does not alter the bore force, cushion performance, or the 30-800 mm/s speed range. For hot environments, a Viton seal variant is available; a built-in magnet can be added for CMSG/DMSG sensor mounting.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X450-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 450 mm |
| Stroke adjustment | Up to 10 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. |
| ×450 | Nominal (maximum) stroke length in mm. |
| -10 | 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.
Fine-tune the end position of a 450 mm stroke actuator during machine build without changing hard stops or reprogramming, saving hours of mechanical rework.
Dial in the stroke end by up to 10 mm to compensate for seal wear or tooling compression in long-running clamping or pressing fixtures.
Adjust a stop gate or diverter arm stroke end quickly when switching product sizes on a packaging line, without needing a new cylinder or mechanical stop block.
Choose the SCJ63X450-10 when a 450 mm stroke is close but you need up to 10 mm of field-adjustable end-stop fine-tuning. If your load requires more force, step up to the 80 mm bore which delivers 2513 N push at 0.5 MPa; for a lighter, more compact setup the 50 mm bore provides 982 N. At this 450 mm stroke, rod bending under side load becomes a real concern—fit an external guide rail or switch to a guided cylinder if the load is not perfectly axial.
For a direct replacement, match the 63 mm bore, 450 mm nominal stroke, 10 mm adjust range, PT port thread, and basic mounting. This model accepts the SCJ mounting subset: FA front flange, LB foot, or TC centre trunnion with TCM1 bracket. If you do not need the adjustable stroke, the fixed-stroke SC63X450 is a simpler, slightly shorter alternative.
Adjustable-stroke checklist
At 0.5 MPa, push force is 1559 N and pull force is 1402 N. At the maximum operating pressure of 0.9 MPa, push reaches 2805 N. The pull force is always lower because the rod reduces the piston area on the return side.
You can, but you lose the rear adjusting screw. An SC63X450 will give the same force and stroke, but any end-position tweaking must be done with external hard stops or by repositioning the cylinder body. The SCJ is preferred when you expect to fine-tune the stroke end in the field.
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