Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X70-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X70-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø32mm bore and 70mm 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.
- BoreØ32 mm
- Stroke70 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM10×1.25
- 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 MACJ32X70-30S
Behind a 30 mm external stop screw sits the MACJ32X70-30S: a bore-32, double-acting mini cylinder whose 70 mm extend stroke can be cut back to 40 mm on site, with a variable air cushion at each end to absorb the hit. Force at 0.5 MPa is 402 N on extend and 346 N on retract, and 0.7 MPa raises push to 563 N across a 0.15-1.0 MPa (22-145 psi) supply.
AirTAC rolls the aluminium-alloy covers and stainless block onto the precision barrel, giving a sealed riveted body rather than a bolted one, and the heterogeneous piston seal carries its own grease reserve. Every unit ships with the magnet fitted, so CMSG / DMSG / EMSG switches need no special order. In round numbers, budget for about 241 N of useful push at 0.5 MPa; that is a theoretical 41 kg vertical lift, or about 20 kg with a 2:1 safety margin.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X70-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X70-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 70 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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 MACJ32X70-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -30 | 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 MACJ32X70-30S Is Used
Bottle reject gate
Kicks underfilled bottles off a bottling line into a reject chute; the 30 mm trim range matches lane changes and the twin cushions stop gate slam over the 70 mm stroke.
CNC bar-feeder pusher
Advances short bar stock in a small lathe feeder; 402 N of push at 0.5 MPa covers feed friction up to roughly 241 N with margin.
Jig clamp for weld fixture
Clamps brackets in a manual welding jig; the 346 N retract pull at 0.5 MPa clears the fixture quickly between parts.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X70-30S the Right Cylinder?
Size in both directions: drop to bore 25 if 245 N at 0.5 MPa covers the load, step up to bore 40 (628 N) when the job needs more muscle. Keep side loads off the 12 mm rod; a guide or knuckle protects it on offset loads.
The adjuster acts as an extend-stroke stop and will not lock the load mid-stroke - on air loss the rod moves - so use a valve or external stop where holding matters. FA and LB mounts plus a standard magnet (CMSG / DMSG / EMSG ready) round out the package, with 1/8" ports and an M10x1.25 rod thread.
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 MACJ32X70-30S FAQ
Push at 0.5 MPa is 402.2 N and pull 345.6 N. Raise supply to 0.7 MPa and push reaches 563.0 N with pull at 483.8 N. Theoretical peak at 1.0 MPa is 82 kgf, within the 0.15-1.0 MPa (22-145 psi) operating range.
A variable cushion sits at each end. Turn the adjuster in and the last part of travel decelerates the piston, so a 70 mm stroke run at up to 800 mm/s finishes quietly instead of hammering the covers - handy with heavier or faster loads.
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.
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