Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X160-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X160-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 160mm 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
- Stroke160 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 MACJ40X160-20S
Packaging machines live on repeatable end positions, and the MACJ40X160-20S supplies exactly that: a 40 mm bore round-body cylinder, double-acting, with the extend stroke adjustable over a 20 mm window and a variable air cushion at both ends to take the bang out of fast tucks and pushes. Expect 628 N of push and 528 N of pull at 0.5 MPa across a 0.15-1.0 MPa (22-145 psi) supply, moving at 30-800 mm/s.
Design around about 377 N of usable push for continuous running at 0.5 MPa, which translates to roughly 32 kg of vertical lift with a 2:1 safety factor. Cushion tuning is what lets you chase the top of the speed range with heavy product carriers, and because the magnet is standard in every MA piston, CMSG, DMSG or EMSG switches bolt on for jam and home detection without a special build.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X160-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X160-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 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 MACJ40X160-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×160 | 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 MACJ40X160-20S Is Used
Form-fill-seal jaw assist
Assists the sealing jaw close on a vertical FFS bagger, where the cushion absorbs jaw impact at high cycle rates.
Tray denesting push-off
Separates and feeds the bottom tray from a stack on a ready-meal line; the stainless barrel copes with daily caustic washdown.
Rotary table index pin
Locks a indexing dial table at each station, with the 20 mm trim compensating for pin bushing wear over the machine's life.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X160-20S the Right Cylinder?
This 20 mm window fits lines where one or two retune cycles a year are normal; wider re-gauging calls for the 75 mm or 100 mm versions of the same bore. Compare 402 N from a 32 mm bore and 981 N from a 50 mm bore before locking the size, and remember the adjuster shortens extend travel only - it is an end stop, not a position lock under air loss. Mount via FA flange or LB foot with I or Y knuckles, and support side loads on the 160 mm stroke with external linear guides rather than the 16 mm 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 MACJ40X160-20S FAQ
Push 628 N and pull 528 N at 0.5 MPa; push 880 N and pull 739 N at 0.7 MPa; theoretical maximum 128 kgf at 1.0 MPa. Operating range 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), 1/8" port, rod thread M12x1.25, speed 30-800 mm/s.
Choose FA flange or LB foot for the body, and I or Y rod knuckles for the rod end. Sensing is ready-made: the piston magnet is standard, so CMSG, DMSG and EMSG switches read extend and retract positions along the stainless barrel with no factory option needed.
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 MACJ40X160-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.