Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 200mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ40 mm
- Stroke200 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-20S
With a 20 mm trim window on the extend stroke, one cylinder can serve several jig depths: wind the stop screw, re-zero the position, resume. Double-acting and cushioned variably at both ends, the MACJ40X200-20S develops 628.3 N forward and 527.8 N back at 0.5 MPa, and the adjustable cushions let you run near the top of the 30-800 mm/s band without slamming the covers.
Lift numbers matter in vertical jigs: 628.3 N is theoretically 64 kgf at 0.5 MPa, so budget about 32 kg for a comfortable 2:1 margin and match it to your part weight. The build is classic MA - a stainless round barrel rolled together with aluminium covers, a 16 mm hard-chrome rod, and a piston seal that stores its own grease. Position feedback needs no options either: the magnet is fitted as standard and works with CMSG / DMSG / EMSG switches.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| 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 | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | Stroke length in mm. |
| -20 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-20S Is Used
Dowel press station
Presses dowels and bushings into aluminium housings; the 20 mm adjust covers part height differences between two jig variants.
Tote divert at sortation
Pushes pick totes onto a spur lane; with roughly 377 N of practical effort at 0.5 MPa the divert stays quick and repeatable at high rate.
Cycle-life test rig
Runs 200 mm test strokes at 30-800 mm/s on lab samples; dual cushions protect the fixture when the programme speeds up.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-20S the Right Cylinder?
Compare before committing: bore 32 reaches 402.2 N at 0.5 MPa for lighter duty, while bore 50 climbs to 981.3 N when the cycle needs more muscle. FA and LB mounts plus I / Y rod knuckles cover most fixture styles. Remember the 20 mm window trims the extend stroke only and acts as a stop, not a mid-stroke lock - on pressure loss the piston coasts, so park position-critical loads with a blocking valve. Long 200 mm strokes like this one should see side thrust guided externally, not through the rod.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-20S FAQ
At 0.5 MPa it pushes 628.3 N and retracts with 527.8 N; at 0.7 MPa these rise to 879.6 N and 738.9 N, and the theoretical peak is 128.1 kgf at 1.0 MPa. The operating range is 0.15-1.0 MPa (22-145 psi) with a 1/8" port.
No. Every MA-series cylinder, this model included, ships with the magnet built in, so CMSG, DMSG and EMSG switches mount directly on the barrel for position signalling. The -20 adjustment only trims the extend stroke; it does not affect sensing.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC MACJ Cylinders
Request a Quote for Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X200-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.