Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20 is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 20mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 0–20mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke20 mm
- Adjustable0–20 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable 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 MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20
The AirTAC MBLCJ20X20-20 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. It delivers 157 N of push force and 132 N of pull force at 0.5 MPa. The rear adjuster allows you to trim up to 20 mm of travel, creating a usable stroke window of 0-20 mm for exact endpoint positioning. Tunable end-of-stroke cushioning absorbs impact energy, protecting the end covers better than a fixed rubber bumper.
This SKU omits the built-in magnet (-S), meaning it cannot accept CMSG, DMSG, or EMSG position sensors. The riveted rolling-packed barrel and 20 µm hard-chrome plated carbon-steel rod ensure durability, while the grease-retaining piston seal maintains lubrication. Remember that the rear adjuster acts only as a travel stop and the cushion only decelerates; neither holds a load in place without live air pressure.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 20 mm |
| Adjustable window | 0–20 mm (trim 20 mm) |
| Acting type | Double acting |
| Port size | G1/8 |
| 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 | Adjustable air cushion (both ends) |
| Max standard stroke | Up to 300 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). Thread options: PT / G / NPT.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×20 | Nominal stroke length in mm. |
| -20 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20 Is Used
PCB Depaneling Saw
Feeds a circular saw blade with 157 N of push force at 0.5 MPa, using the 0-20 mm stroke window to set the exact cutting depth on populated circuit boards.
Microfluidic Valve Testing
Cycles a test fixture against a cartridge seat, relying on the twin adjustable air cushions to prevent impact damage to delicate plastic manifolds.
Wire Straightener Guide
Pushes a ceramic wire guide into a tensioning path, trimming the 20 mm travel down to a 5 mm bump to fine-tune the straightening load.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20 the Right Cylinder?
Choose this 20 mm bore if your task needs 157 N push force at 0.5 MPa. If your load is lighter, the next size down is unavailable as 20 mm is the smallest, but if you need more power, stepping up to a 25 mm bore yields 245 N push at 0.5 MPa. Select the MBLCJ over the MBLJ when your moving mass requires tunable pneumatic deceleration rather than a fixed bumper, or over the MBLC when you need that adjustable end-position stopper.
Because this model lacks a magnet, you cannot mount reed or electronic sensors for stroke detection. Mounting is limited to Basic, FA (flange), or LB (foot) styles, as there is no SDB pivot or back-cover option. The overall length extends by the adjustment travel. For an exact replacement, match the 20 mm bore, 20 mm stroke, 20 mm adjust code, G1/8 port, PT thread, and no-magnet configuration.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20 FAQ
At 0.5 MPa, this double-acting cylinder provides 157 N of push force and 132 N of pull force. At 0.7 MPa, the push force increases to 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa.
The rear adjuster is a mechanical travel stop that sets the end-of-stroke position within a 0-20 mm window. The adjustable air cushion uses a screw to tune pneumatic deceleration near the stroke ends. Neither component locks or holds the load; the rod will drift without live air pressure.
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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