Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-40
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-40 is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 150mm nominal stroke and a rear adjustable-stroke stopper — trim up to 40mm for a usable window of 110–150mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke150 mm
- Adjustable110–150 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 MBLCJ20X150-40
The AirTAC MBLCJ20X150-40 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and a screw-tunable air cushion at both ends. It delivers 157 N push and 132 N pull at 0.5 MPa. The rear stopper allows you to trim up to 40 mm of travel, creating a usable 110-150 mm stroke window for precise positioning. An integrated adjustable air cushion replaces the standard fixed rubber bumper, enabling faster cycle speeds while protecting the end covers from impact shock.
This 20 mm bore unit uses a G1/8 port, an Ø8 mm carbon-steel rod with 20 µm hard-chrome plating, and an M8x1.25 rod-end thread. The riveted rolling-packed aluminum barrel and heterogeneous two-way grease-retaining piston seal keep the body light for tight spaces. Because this specific SKU lacks the -S magnet code, it cannot accept an AirTAC CMSG, DMSG, or EMSG position sensor. The rear adjuster is a travel stop, not a mechanical lock; it sets the end position but does not hold the load under pressure loss.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-40 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-40 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 150 mm |
| Adjustable window | 110–150 mm (trim 40 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 MBLCJ20X150-40
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×150 | Nominal stroke length in mm. |
| -40 | 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 MBLCJ20X150-40 Is Used
PCB Router Z-Axis
Depths the 110-150 mm travel window to plunge a spindle, using the tunable air cushion to prevent end-cover shock when lifting a 157 N payload at 0.5 MPa.
Label Applicator Tamp
Adjusts the rear stopper for varying product heights without changing the cylinder mount, relying on the cushion to brake the 132 N pull at high cycle rates.
Textile Yarn Guide
Traverses fine yarn across a 150 mm path; the Ø8 mm hard-chrome rod resists wear while the riveted aluminum barrel fits within compact loom frames.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-40 the Right Cylinder?
If 132 N pull is insufficient, step up to the 25 mm bore (206 N pull at 0.5 MPa); if you need less force for an even smaller footprint, the 20 mm is the smallest available size. Choose this MBLCJ over the MBLJ when your application requires tunable end-of-stroke deceleration rather than a fixed rubber bumper, or over the MBLC if you need to trim the 150 mm travel down to a 110 mm minimum. The adjuster and cushion decelerate the rod but do not lock it; use an external locking device for fail-safe load holding. Mounting is limited to Basic, FA flange, or LB foot styles—no SDB pivot or back-cover options exist. For a direct replacement, match the 20 mm bore, 150 mm stroke, 40 mm adjust code, G1/8 PT thread, and confirm no magnet is fitted. At 150 mm stroke, the small Ø8 mm rod is susceptible to side-load bending; always guide the load externally.
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 MBLCJ20X150-40 FAQ
At 0.5 MPa, this 20 mm bore cylinder provides 157 N push and 132 N pull. At 0.7 MPa, the push force is 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa.
The rear stroke adjuster mechanically trims the travel window down to 110 mm from the 150 mm nominal stroke, acting as a hard stop. The adjustable air cushion uses a screw needle valve to tune end-of-stroke deceleration, protecting the end covers. Neither holds the load; the adjuster sets the position and the cushion only brakes the rod.
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.
Related AirTAC Adjustable-Stroke Cylinders
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