Airtac ACJ1412 ACJ Series Hydraulic Shock Absorber

Airtac ACJ1412 ACJ Series Hydraulic Shock Absorber

Model-specific summary: The Airtac ACJ1412 is a field-adjustable hydraulic shock absorber with a M14×1.5 fully threaded body, 12 mm working stroke and rated absorption of 20 N·m per cycle / 36,000 N·m/h. It is designed to convert impact energy into controlled deceleration at machine end stops.

Key specifications

Construction and damping advantages

• The integrated outer body receives QPQ treatment for wear and corrosion resistance.
• Full-body threading simplifies axial positioning, locknut adjustment and heat dissipation.
• A high-hardness stainless steel piston rod improves impact and corrosion resistance.
• A dedicated oil-filling process and special damping lubricant support stable energy absorption across a broad temperature range.
• The compact body provides comparatively high energy capacity for machine-stop applications.

Installation, adjustment and troubleshooting

1. Calculate both energy per impact and accumulated energy per hour; both must remain within the listed ratings.
2. Keep impact alignment within 3° of the piston-rod axis and tighten the M14×1.5 body to no more than 11 N·m.
3. Set the machine stop so motion ends approximately 1 mm before the absorber bottoms out.
4. Do not keep the piston rod continuously compressed and keep external water or oil away from the rod.
5. If rebound occurs at the beginning of the stroke, adjust toward the softer setting; if rebound occurs near the end, adjust toward the harder setting. Make small changes and retest.

Quick selection answer

ACJ1412 is a M14×1.5, 12 mm stroke hydraulic shock absorber rated at 20 N·m per cycle and 36,000 N·m/h.

Typical applications

Used to decelerate slides, transfer mechanisms, indexing tables, machine stops and automated handling equipment while reducing impact and vibration.

Selection and compatibility notes

• Calculate effective moving mass, impact velocity, energy per cycle and hourly energy before selection. Keep side load within 3° and verify alignment.
• Confirm the complete model code, installation space and operating conditions before purchase.
• Product selection must be verified against the machine load, speed, duty cycle and safety requirements.

Frequently asked questions

What is ACJ1412 used for?

Used to decelerate slides, transfer mechanisms, indexing tables, machine stops and automated handling equipment while reducing impact and vibration.

How does this model differ from related products?

ACJ models provide adjustable automatic compensation; ACA models use standard automatic compensation with a speed/load code selected for the application.

What should be checked before ordering?

Check the model code, dimensions, operating conditions, mounting method and required accessories. Refer to the manufacturer catalog drawing for final engineering approval.

Technical reference

View the official AirTAC ACJ Series product reference

Technical content reviewed against the AirTAC 2026 product catalog. Last updated: 2026-08-20. AirTAC is the product manufacturer and trademark owner; this page is an independent product listing and does not claim to be the official AirTAC website or an authorized distributor.