Airtac MAC Stainless Steel Mini Air Cylinder MAC20X135SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X135SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 135mm 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
- Stroke135 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X135SU
Round barrel, riveted covers, no tie rods: the MAC20X135SU is AirTAC's stainless mini cylinder built for 135 mm strokes where space is tight and washdown is routine. Double acting with a variable air cushion at both ends, it develops 157 N push and 131.9 N pull at 0.5 MPa, rising to 219.8 N at 0.7 MPa on the same 20 mm bore.
For sizing, treat 94 N - roughly 60 percent of the 157 N rating - as the realistic working force at 0.5 MPa rather than the full number. The U flat-end back cover bolts flush to a plate, and FA flange, LB foot or SDB pivot brackets bolt on if the job needs them. The magnet ships standard, so adding a CMSG or DMSG switch for end-of-stroke signalling takes no special piston. One caution: this is not a lock - if air drops, the piston drifts, so put a pilot check valve or rod lock on the line for held loads.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X135SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X135SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 135 mm |
| Acting type | Double acting + 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 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 (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 MAC Stainless Steel Mini Air Cylinder MAC20X135SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×135 | Stroke length in mm. |
| -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 MAC Stainless Steel Mini Air Cylinder MAC20X135SU Is Used
Drilling fixture clamp
Clamps an aluminium bracket against a drill jig; 94 N of practical working force at 0.5 MPa holds the part through the cut without crushing it.
Hopper slide gate
Opens and closes a slide gate under a small dosing hopper, the flat-end U cover bolting flush to the gate plate for a clean install.
Sliding machine guard
Drives a sliding polycarbonate guard on a small press; the variable cushions stop the guard cracking against its end stops at speed.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X135SU the Right Cylinder?
Size by force, not habit: drop to bore 16 (100.5 N push at 0.5 MPa) for light fixtures, or climb to bore 25 (245.3 N) when the clamp fights real reaction loads. For a long 135 mm stroke, watch side loads - the 8 mm rod will bend under lateral force, so guide the load externally rather than through the rod.
The U back cover suits fixed plate mounting; pick the SDB pivot or LB foot codes if the machine geometry needs something else. Because there is no spring or lock inside, a centred valve leaves the piston free to drift under gravity.
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 MAC Stainless Steel Mini Air Cylinder MAC20X135SU FAQ
At 0.5 MPa: 157 N on extension, 131.9 N on retraction. At 0.7 MPa: 219.8 N and 184.7 N. The theoretical maximum is 32 kgf at 1.0 MPa. The 135 mm stroke is standard for bore 20 (up to 500 mm), with 1/8" ports and an M8x1.25 male rod thread on the 8 mm rod.
Yes - every MAC cylinder leaves the factory with a piston magnet as standard, so CMSG, DMSG and EMSG reed switches simply slide over the barrel wherever a signal is needed. No special-order piston, no waiting.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MAC Stainless Steel Mini Air Cylinder MAC20X135SU
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.