Rod Locks control over-travel, drifting, and bouncing.

Press Release Summary:

Available mounted to ISO 6431 style pneumatic cylinder or as standalone unit, AMLOK® RLI Series is constructed of black anodized aluminum with piston and wedge locking mechanism actuated by multiple springs that mechanically lock rod quickly and securely. Clamp is unlocked when air actuates piston, compresses spring, and releases locking device. Providing consistent clamping force in both directions, power-off rod locks feature 0.002–0.003 in. precision holding and 60 psi release pressure.

Original Press Release:

Advanced Machine & Engineering Co. Announces the Fourth-Generation RLI Series Rod Locks

Advanced Machine & Engineering Co., (AME) Rockford, IL announces the Fourth- Generation RLI Series Rod Locks.  The new Pneumatic Series RLI (ISO 6431) Metric Rod Lock has been developed as a solution to control problems inherent to pneumatics – over travel, drifting, bouncing and reverse traveling.  The AMLOK® Power-Off Rod Lock can be mounted to a cylinder, or as a stand alone unit.

The patented AMLOK® Type RLI is constructed of black anodized aluminum housing with a special piston and wedge locking mechanism actuated by multiple springs that mechanically lock the rod quickly and securely. The clamp is unlocked when air actuates the piston, compresses the spring and releases the locking device. 


• No rod displacement on engagement

• Large clamping surface reduces pressure-per-square-inch on the rod, extending service life

• Fast response time

• Low backlash

• 4 bar (60 psi) release pressure

• Precision holding 0.002”-0.003”

• Consistent clamping force in both directions

• High cycle rates and accuracy

• Holds load during power/pressure loss

• Compact unit, easy integration

• Versatile through hole tie rod mounting to ISO 6431 style pneumatic cylinders

• Many NFPA style-mounting attachments available for stand alone applications

The optional sealed RLI Series design is suitable for food and wash down applications as well as pneumatic and hydraulic presses, scissor-lift tables, test and positioning equipment, amusement ride equipment, printing and paper handling equipment, theatrical equipment (platforms), assembly equipment, and machine tool applications.

Advanced Machine & Engineering Co., is a manufacturer located in Rockford, Ill., serving the Machine Tool Industry with precision components and accessories, including spindle interface components, workholding devices and, through our sister company, Hennig, machine enclosures, chip removal and filtration systems; the Fluid Power – Safety market with cylinder rod locks and safety catcher devices; and the Production Saw market with our AmSaw carbide saw machines and Speedcut blade products. AME has manufacturing partners and customers around the world and across the U.S. To learn more, visit .

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