Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X300-100S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X300-100S is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 300mm nominal stroke and a rear adjustable-stroke stopper — trim up to 100mm for a usable window of 200–300mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke300 mm
- Adjustable200–300 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 MBLCJ20X300-100S
The AirTAC MBLCJ20X300-100S is a compact double-acting aluminum mini cylinder engineered for precise motion control in tight spaces. It features a rear adjustable stroke stopper allowing you to trim up to 100mm of travel, creating a usable extension window of 200 to 300mm. Delivering 157N of push force at 0.5 MPa, this unit integrates an adjustable air cushion at both ends to tune end-of-stroke deceleration, protecting the end covers during fast cycles.
This SKU includes a built-in magnet (-S) for compatibility with AirTAC CMSG reed and DMSG/EMSG electronic sensor switches. The riveted rolling-packed barrel pairs with a heterogeneous grease-retaining piston seal, while the Ø8mm carbon-steel rod features 20μm hard-chrome plating for wear resistance. At a 300mm stroke, the slender 8mm rod is highly susceptible to side-load bending, so an external guide rail is strongly recommended to prevent premature seal failure.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X300-100S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X300-100S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 300 mm |
| Adjustable window | 200–300 mm (trim 100 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 MBLCJ20X300-100S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×300 | Nominal stroke length in mm. |
| -100 | 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 MBLCJ20X300-100S Is Used
PCB Depaneling Saw Feed
Uses the 200-300mm adjustable stroke window to set the exact cut depth on a circular saw, while the air cushion decelerates the 157N thrust to prevent blade chatter.
Dosing Valve Actuation
Trims the rear stopper by 100mm to hit the precise open position for a chemical dosing valve, relying on the DMSG electronic sensor to confirm the rod seat.
Lightweight Parts Ejector
Pushes molded plastic parts out of a 300mm deep tooling cavity, using the tunable cushion to stop the 8mm rod smoothly without cracking the components.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X300-100S the Right Cylinder?
Stepping up to the 25mm bore increases your 0.5 MPa push force to 245N, whereas dropping below 20mm is not standard in this series. Choose this MBLCJ model over the MBLJ variant when your application demands screw-tunable deceleration rather than a fixed rubber bumper, or over the MBLC when you need the 100mm rear travel adjuster to fine-tune the end position.
Remember that the rear adjuster is a mechanical travel stop, and the air cushion only regulates speed; neither holds the load pneumatically, so external locking is required for position holding. Mounting is limited to Basic, FA flange, or LB foot styles—SDB pivot and back-cover options are not available on this body. For a direct replacement, match the 20mm bore, 300mm stroke, 100mm adjust code, G1/8 PT thread, and the -S magnet specification.
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 MBLCJ20X300-100S FAQ
At 0.5 MPa, this 20mm bore cylinder provides 157N of push force and 132N of pull force. At 0.7 MPa, the push force reaches 220N. The theoretical maximum force is 32 kgf at 1.0 MPa. The maximum standard stroke limit for a 20mm bore in this series is 300mm.
The rear adjuster is a mechanical travel stop that physically limits the rod extension between 200mm and 300mm, but it does not lock the load in place. The adjustable air cushion is a separate screw-tunable valve that regulates exhaust flow to decelerate the piston near the end covers, protecting the cylinder from impact damage.
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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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