Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X175-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X175-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 175mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke175 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM8×1.25
- CushionFixed anti-impact bumper pads
- 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X175-20S
Changeovers get simpler when the stroke follows the product: a stop screw on this double-acting cylinder shortens the 175 mm extend stroke by up to 20 mm, giving a 155-175 mm working range you can reset in minutes without touching the air circuit. Bore 20 output reaches 157.0 N push and 131.9 N pull at 0.5 MPa, rising to 219.8 N at 0.7 MPa. The stainless round tube and 8 mm hard-chrome rod stand up to damp food-plant air, while the riveted aluminium-alloy covers keep the footprint slim on crowded frames.
Plan around 94 N of usable push at 0.5 MPa (60 percent of the 157 N figure), which corresponds to about 8 kg of vertical lift with a 2:1 safety factor - enough for lid weights, small castings or filled blister packs. Fixed bumper pads cushion both stroke ends with no cushion-screw setting to tune, and the standard built-in magnet lets CMSG, DMSG or EMSG switches signal position from day one.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X175-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X175-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 175 mm |
| Acting type | Double acting, adjustable stroke |
| 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 | Fixed anti-impact bumper pads |
| 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X175-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×175 | 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X175-20S Is Used
Blister card ejection
Pushes filled blister cards off a thermoforming line into an outfeed chute, with the 20 mm trim matching the card stack height of each format.
Carton flap tucker
Folds top flaps on a semi-automatic case packer; the trimmed stroke stops the tucker blade from bottoming out on shallow cartons.
Mold nest ejector
Ejects small injection-molded clips from a gravity drop nest; about 8 kg of vertical lift capability with margin makes the drop reliable at cycling speed.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X175-20S the Right Cylinder?
For context, a bore 16 MAJ offers 100.5 N push at 0.5 MPa and a bore 32 jumps to 402.2 N, so bore 20 with 157.0 N fits light mechanical work where compactness and speed matter more than raw force. Note that the adjuster works as an extend-stroke end stop, not a load-holding brake - should supply air fail the rod will drift, so support the payload independently. FA flange and LB foot mounts plus I and Y rod knuckles cover most frame layouts, and any long payload should ride an external guide to keep bending loads off 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 Bumper models: keep speed within the rated range.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X175-20S FAQ
Push 157.0 N and pull 131.9 N at 0.5 MPa; push 219.8 N at 0.7 MPa; theoretical maximum 32.0 kgf at 1.0 MPa. Rod speed range is 30-800 mm/s and supply pressure 0.15-1.0 MPa (22-145 psi) of air filtered to 40 um.
No - the MAJ carries fixed anti-impact bumper pads that simply decelerate the piston at each stroke end. If your station needs tunable air cushioning, the related MACJ series with adjustable cushions is the model to specify instead.
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.
Request a Quote for Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X175-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.