Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X25-10SLB
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X25-10SLB is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø20mm bore and 25mm 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.
- BoreØ20 mm
- Stroke25 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- 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 MACJ20X25-10SLB
Foot mounting changes the install math: with LB feet bolted to the machine plate, the MACJ20X25-10SLB holds its 157 N push at 0.5 MPa against side framing without a separate bracket, and the stop screw trims the extend stroke across a 10 mm window for exact part positioning. A variable air cushion at both ends rounds off each stop.
The body is a stainless round tube rolled together with aluminium covers and a stainless block, matched to a 20 um hard-chrome plated rod that shrugs off coolant mist and washdown. The magnet comes fitted as standard, so CMSG, DMSG or EMSG switches drop on for position feedback the moment the controller needs it.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X25-10SLB Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X25-10SLB |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 300 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MACJ20X25-10SLB
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -10 | 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 MACJ20X25-10SLB Is Used
Hold-down clamp on a small CNC fixture plate
Feet bolt straight to the fixture plate, and the trimmed 15-25 mm stroke clears the swarf guard between parts.
Tube pre-crimp in medical device assembly
The cushioned end stop lets the crimp land softly, protecting thin-walled tubing during the 157 N press.
Guide pin advance on a jig-and-fixture bench
Maintenance crews re-trim the stroke with the stop screw when pins change, no cylinder swap needed.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X25-10SLB the Right Cylinder?
Compared with the 16 mm bore (100.5 N at 0.5 MPa) and the 25 mm bore (245.3 N), the 20 mm size here gives 157 N - enough for most light clamps once you budget about 94 N for continuous work. The LB feet make alignment on a flat machine table simple and free up the rod side for tooling. Note the adjuster is only an extend-stroke end stop: if supply air fails the piston can drift, so add a separate clamp wherever load holding matters. I and Y rod knuckles are optional; SDB is not offered on the adjustable series.
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 MACJ20X25-10SLB FAQ
This 20 mm bore delivers 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, and up to 32 kgf theoretical at 1.0 MPa. It is double-acting with a 10 mm adjustable window on a 25 mm stroke, a variable cushion at both ends, 0.15-1.0 MPa (22-145 psi) operating pressure and a 1/8" port.
LB feet let you bolt the barrel flat against a machine plate, which suits bench fixtures and clamps where a front flange would block tooling. Everything else carries over: stainless barrel, hard-chrome rod, standard built-in magnet for DMSG or EMSG switches, and speeds of 30-800 mm/s.
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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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