The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X210-20STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø80mm bore, 210mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X210-20STC is an 80 mm bore, double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, giving you up to 20 mm of fine-tuning range via the rear-cap screw. Its push force reaches 2513 N at 0.5 MPa and 4523 N at 0.9 MPa, driven by a 25 mm diameter piston rod through PT3/8 ports. The body length A(SCJ) is 239 mm, and the built-in cushion decelerates the piston over the final 28 mm of travel.
This model ships with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion (TC) mount with the TCM1 bracket included, allowing the cylinder to pivot as it strokes. The adjustable stroke end is ideal for commissioning trials, format changeovers, or compensating for tooling wear without swapping the cylinder or adding external hard stops. Operating on filtered air from 0.15 to 1.0 MPa, it handles speeds of 30-800 mm/s across a temperature range of -20 to +70 °C.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X210-20STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 210 mm |
| Stroke adjustment | Up to 20 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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. |
|---|---|
| 80 | Bore size in mm. |
| ×210 | Nominal (maximum) stroke length in mm. |
| -20 | 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, dial in the exact stroke end position with the rear adjusting screw. The 20 mm range lets you compensate for stack-up tolerances in the tooling without re-plumbing or changing the cylinder.
When a packaging machine switches between box sizes, the SCJ80X210-20STC allows operators to quickly reset the pusher stroke end. The trunnion mount accommodates the pivoting motion common in flap-folding or carton-erecting stations.
In a high-cycle clamping fixture, the adjustable stroke takes up pad wear over time. The built-in magnet lets you add end-of-stroke sensors to confirm full clamp engagement on every cycle, improving process reliability.
Choose the SCJ80 when your application needs around 2513 N of push force at standard plant air; if you can drop to roughly 1559 N, the 63 mm bore (SCJ63) offers a smaller, lighter package, while stepping up to the 100 mm bore delivers 3927 N for heavier loads. The 210 mm nominal stroke is well within the 1500 mm maximum for this bore, so no special stroke order is needed. For replacement, match an SCJ80 with a 210 mm nominal stroke, the 20 mm adjust range (-20), PT thread, the TC centre trunnion mounting kit (F-SC80TC), and the -S magnet option.
Because the stroke exceeds 200 mm, be mindful of side loads that can bend the 25 mm rod or wear the bushing; if the load is not guided externally, add a guide rail or consider a guided cylinder to protect the rod bearing and seal life.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N (reduced by the 25 mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 4523 N. The theoretical maximum at 1.0 MPa is 513 kgf.
Yes, if you need the ability to fine-tune the stroke end by up to 20 mm. The SCJ80X210-20STC shares the same bore, rod, port, and mounting interfaces as the SC series, but the body is slightly longer to house the adjusting screw. Ensure you match the 210 mm nominal stroke, PT ports, and trunnion mount (F-SC80TC) for a direct retrofit.
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.