Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X100-30S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X100-30S is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 100mm nominal stroke and a rear adjustable-stroke stopper — trim up to 30mm for a usable window of 70–100mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke100 mm
- Adjustable70–100 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 MBLCJ20X100-30S
The AirTAC MBLCJ20X100-30S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and a tunable air cushion at both ends. The rear stopper allows you to trim up to 30 mm of travel, creating a usable 70-100 mm stroke window for exact end-positioning. Driven by an 8 mm carbon-steel rod with 20 µm hard-chrome plating, it delivers 157 N of push force and 132 N of pull force at 0.5 MPa. The riveted rolling-packed barrel and heterogeneous two-way grease-retaining piston seal ensure reliable lubrication across the 30-800 mm/s speed range.
Unlike the base MBLJ which relies on a fixed rubber bumper, this SKU uses screw-tunable end-of-stroke deceleration to absorb kinetic energy, protecting the end covers during faster or heavier moves. The built-in magnet (-S) enables position detection via CMSG reed switches or DMSG and EMSG solid-state sensors. Note that the rear adjuster is strictly a mechanical travel stop, and the cushion only decelerates; neither function mechanically locks the load in place when air is removed. Mounting is limited to Basic, FA flange, or LB foot brackets, as no back-cover or SDB pivot options exist for this series.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X100-30S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X100-30S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 100 mm |
| Adjustable window | 70–100 mm (trim 30 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 MBLCJ20X100-30S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×100 | Nominal stroke length in mm. |
| -30 | 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 MBLCJ20X100-30S Is Used
PCB Drill Bit Changer
Drives a rotary tool carousel in a PCB drilling machine, using the 70-100 mm stroke window to perfectly index tool length without recalibrating software, while the air cushion prevents micro-bounce during the 157 N indexing stop.
Textile Loom Tensioner
Adjusts a yarn tensioning bar on a textile loom, using the rear stopper to fine-tune deflection limits and the tunable cushion to protect the end covers from the rapid 30-800 mm/s cycling.
Medical Vial Sorter Gate
Actuates a diverter gate on a pharmaceutical vial sorting line, where the DMSG solid-state sensor confirms the 100 mm stroke end and the cushion softens the impact of fast routing shifts.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X100-30S the Right Cylinder?
Choose this 20 mm bore if your application requires 157 N of push force at 0.5 MPa. If you need less force, the smaller 20 mm bore is the smallest available in this series, so you cannot step down within the MBLCJ range. If your payload requires more thrust, step up to the 25 mm bore, which provides 245 N of push force at 0.5 MPa. The PT-threaded G1/8 port and M8x1.25 rod-end thread are fixed by the 20 mm bore. When replacing this unit, match the 100 mm nominal stroke, the 30 mm adjust code, the PT thread, and the -S magnet. Because the overall length equals A + 2 x stroke + adjust, verify your spatial envelope. The adjuster sets the travel end, while the cushion tunes deceleration; neither holds position, so use an external guide or lock for load holding.
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 MBLCJ20X100-30S FAQ
At 0.5 MPa, this 20 mm bore 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 adjustable stroke is a mechanical travel stop that lets you trim up to 30 mm from the 100 mm stroke, yielding a 70-100 mm usable window. The adjustable air cushion is a screw-tunable valve that controls end-of-stroke deceleration to protect the end covers. The adjuster sets the position, the cushion sets the deceleration rate, and neither acts as a mechanical lock to hold the load without air.
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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