Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X175-40
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X175-40 is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 175mm nominal stroke and a rear adjustable-stroke stopper — trim up to 40mm for a usable window of 135–175mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke175 mm
- Adjustable135–175 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- 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 MBLCJ40X175-40
The AirTAC MBLCJ40X175-40 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. The rear stopper lets you trim up to 40 mm of travel, creating a usable stroke window of 135 to 175 mm. Driven through a G1/4 port, this Ø40 mm bore generates 628 N of push force and 528 N of pull force at 0.5 MPa, making it well-suited for moderate-thrust positioning tasks over long travel distances.
Unlike the base MBLJ which relies on a fixed rubber bumper, this model uses screw-tunable air cushioning to decelerate heavy loads smoothly at the stroke ends, protecting the end covers from impact damage. The riveted rolling-packed barrel and 20 µm hard-chrome plated carbon-steel rod provide structural rigidity. Note that this specific SKU lacks the -S magnet option, so it cannot accept CMSG, DMSG, or EMSG electronic position sensors. The rear adjuster acts only as a travel stop and does not lock the load in place.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X175-40 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X175-40 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 175 mm |
| Adjustable window | 135–175 mm (trim 40 mm) |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 500 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 MBLCJ40X175-40
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×175 | 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 MBLCJ40X175-40 Is Used
CNC Fixture Clamping
Provides 628 N of push force at 0.5 MPa to secure aluminum castings on a CNC machining center, using the 135-175 mm window to dial in the exact clamping reach.
Pallet Diverter Arm
Uses the tunable air cushion to smoothly swing heavy wooden pallets onto a side conveyor belt without splintering the wood or shocking the pivot bracket.
Glue Dispenser Positioning
Adjusts the rear stopper to fine-tune the nozzle standoff distance for an automotive glass glue dispenser, ensuring consistent bead volume across varying part geometries.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X175-40 the Right Cylinder?
If you need less force, stepping down to the Ø32 bore yields 402 N of push at 0.5 MPa, while moving up to the Ø50 bore provides 981 N for heavier payloads. Choose this MBLCJ variant over the MBLJ when your moving mass requires tunable end-of-stroke deceleration rather than a simple fixed bumper, or over the MBLC when you need to fine-tune the travel end position. Remember that the rear stroke adjuster is a travel stop, not a lock; the adjustable cushion only decelerates. Neither function will hold a load statically without live air pressure, so external locking mechanisms are required for fail-safe positioning.
Mounting is limited to Basic, FA (flange), or LB (foot) styles; this series does not support SDB pivot mounts or back-cover options. To match this exact replacement, specify bore 40 mm, stroke 175 mm, adjust code 40, PT tapered thread, and no magnet. Because the 175 mm stroke is relatively long for the 16 mm rod, you should use an external guide to prevent rod bending and premature seal wear under side loads. The overall length is A + 2 x 175 + 40 mm.
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 MBLCJ40X175-40 FAQ
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At 0.7 MPa, the push force increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa.
The rear stroke adjuster is a mechanical travel stop that sets your usable stroke window (135-175 mm for this model). The adjustable air cushion is a screw-tunable valve that controls end-of-stroke deceleration. Neither holds the load statically; the cylinder requires live air to maintain position.
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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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