Products
Rotary Motion Control
All Rotary Motion Control
Rotary Indexers
Rotary Indexers
Roller Pinion Gears
Geared Bearings
Gears
Precision Brakes
Ball Screw Brakes
Shaft Brakes
Servomotor Brakes
Gearheads
Gearheads
Rotary Motion Control
Rotary Motion Control including Rotary Indexers, Roller Pinion Gears, Precision Brakes and Harmonic Gearheads.
Rotary Indexers
Based on Nexen’s innovative Roller Pinion technology, Nexen Ring Drive (Compact Precision Ring Drive and Precision Ring Drive) systems come complete with a precision grade bearing and drive mechanism in a rigid housing to simplify the selection process. With all the features of our other advanced Roller Pinion System technology, Nexen's Ring Drives open up new design possibilities for the next generation of machines.
Rotary Indexers
Based on Nexen’s innovative Roller Pinion technology, Nexen Ring Drive (Compact Precision Ring Drive and Precision Ring Drive) systems come complete with a precision grade bearing and drive mechanism in a rigid housing to simplify the selection process. With all the features of our other advanced Roller Pinion System technology, Nexen's Ring Drives open up new design possibilities for the next generation of machines.
Rotary Indexers
Based on Nexen’s innovative Roller Pinion technology, Nexen Rotary Indexer Systems come complete with a precision grade, high capacity bearing and drive mechanism in a rigid housing.

With options for high speed, high torque and zero backlash, Nexen Ring Drives can be optimized for every application. With accelerations up to twice as high as other indexing technologies, Nexen Ring Drive systems provide more productivity while boasting low maintenance, high efficiency and long life.
Roller Pinion Gears
Nexen’s patented rack and roller pinion design maintain high repeatable accuracy with zero backlash over longer distances with quieter operation - even at high speeds.
Geared Bearings
Nexen's Geared Bearing solution is ready to be integrated into a machine with its full ring gear and a high-capacity cross-roller bearing.

Based on Nexen's innovative Roller Pinion technology, the Roller Pinion System Geared Bearings come complete with a precision zero backlash gear mounted on a precision grade, high capacity bearing. Geared Bearings can be incorporated into any precision rotary motion control application with a number of possible sizes and gear ratios, all with zero backlash.
Gears
Nexen's Roller Pinion Gear System (RPG) is based on an innovative pinion consisting of bearing-supported rollers and a unique tooth profile. Gears, Gear segments and geared bearings can be configured to meet the application needs.

This unique drive system provides high positional accuracy, zero backlash, no cumulative error, low-velocity ripple, high speeds, rigidity, low noise, low maintenance, corrosion resistance, and long life. This opens up new machine design possibilities and provides the capability to achieve much higher performance levels.
Precision Brakes
Nexen’s Ball Screw / Shaft Brake / Servomotor Brake is a high-torque, spring-engaged, air-released brake. It serves as a redundant safety brake in the event of a mechanical defect in the drive line, particularly in the Z-axis. These brakes provide high accuracy for holding the position in power-off situations.
Ball Screw Brakes
The Nexen Ball Screw Brake is a high-torque, spring-engaged brake acting on the machined end of a ball screw. It serves as a primary or redundant safety brake to prevent back driving if a power loss or mechanical defect occurs in the driveline.
Shaft Brakes
Nexen's Shaft Brake has several bore sizes available, offering an off-the-shelf, zero-backlash braking solution for shaft-holding applications. These spring-engaged, air-released brakes offer outstanding holding for consistent, long-lasting performance.
Servomotor Brakes
Nexen’s Eclipse® spring-engaged, air-released servomotor brakes offer a powerful, high-torque and no-slip holding option. The Eclipse Servo Motor brake is installed between the motor and the linear device, providing improved safety with low inertia.
Gearheads
Nexen’s Harmonic Gearhead is the perfect combination of size and precision. When combined with Nexen’s Poller Pinion System, a true backlash-free solution from the motor to the driven load can be achieved. Machine designers will have up to a 70% reduction in length over standard gearheads, gaining increased space in a design.
Gearheads
Nexen’s Harmonic Gearhead is the perfect combination of size and precision. When combined with Nexen’s Poller Pinion System, a true backlash-free solution from the motor to the driven load can be achieved. Machine designers will have up to a 70% reduction in length over standard gearheads, gaining increased space in a design.
Gearheads
Harmonic Gearheads offer true zero backlash, high reduction ratios of 50/80/100/120:1, and high load capacity in a very compact package. Gearheads utilize the best cross-roller-bearing technology for the highest rigidity and load capacities.
Linear Motion Control
All Linear Motion Control
Roller Pinion Racks
Roller Pinion Racks
Linear Precision Brakes
Profile Rail Brakes
Rod Locks
Roller Pinion Racks
Nexen’s Roller Pinion System (RPS) patented rack and roller pinion design maintains high repeatable accuracy with zero backlash over longer distances with quieter operation - even at high speeds.
Roller Pinion Racks
Nexen’s Roller Pinion System (RPS) patented rack and roller pinion design maintains high repeatable accuracy with zero backlash over longer distances with quieter operation - even at high speeds.
Roller Pinion Racks
Nexen’s patented rack and pinion system with bearing-supported rollers engaging two rack teeth simultaneously, allowing for greater efficiency, longer life and outstanding accuracy.
Linear Precision Brakes
Nexen’s Profile Rail Brakes and Rod Locks are compact and powerful, delivering precision holding and locking at an affordable price.
Profile Rail Brakes
Nexen’s linear profile guide rail brakes use spring force to secure the load in holding applications. Superior response time and high force for stopping and holding in e-stop and power-off situations. Each rail brake clamps directly onto the guide rail to provide positive braking and holding in all axes, with no effect on bearing surfaces
Rod Locks
Nexen’s Spring Engaged, Air Released Rod Locks offer precision holding with guide rod systems and NFPA or ISO cylinders. A large clamping surface ensures consistent performance, ideal for accurate positioning.
Power Transmission
All Power Transmission
Clutches
Friction Clutches
Tooth Clutches
Friction Brakes
Rotary Brakes
Drum Brakes
Caliper Brakes
Friction Clutch-Brakes
Friction Clutch-Brakes
Torque Limiters
Pneumatic Torque Limiters
Mechanical Torque Limiters
Tension Control
Tension Control Brakes
Tension Control Clutches
Web Controls
Clutches
Multiple or single-position tooth clutches are positive engagement devices having open or nickel-plated, enclosed housings. Tooth clutch designs include a pilot-mount version (accepts sprockets or couplings), a flange-mount version that connects to bearing-supported devices and integral sprocket versions. Air-engaged tooth clutches produce up to 60,000 in-lbs. torque. Spring engaged tooth clutches, with up to 72,000 in-lbs. torque, are the ultimate holding device. Single and double-flex couplings, specifically designed for high-torque tooth clutches, are used for inline shaft connections.
Friction Clutches
Nexen’s single-disc, self-adjusting Clutches mount on a driving or driven shaft. They cover transmitted horsepower ratings from fractional to 25 hp, torque ratings to 5000 in-lb with thermal capacities to 2.5 thermal horsepower, and maximum operating speeds to 3600 rpm. Most are available in Sheave, Pilot, or Coupling Mount versions.
Tooth Clutches
Available in a variety of Single or Multiple Position Models, as well as a Sprocket Tooth design, there are Standard and Metric Models available. Most can be used with a Single or Double Flex Coupling Assembly for in-line coupling applications.
Friction Brakes
Friction brakes have a stationary pad (friction facing) and a rotating wear surface. Common configurations include drum brakes, caliper disc brakes and shaft-mounted brakes with an integral disc and rotor. Friction brakes provide controlled deceleration, stopping, holding, and tension control. Air and spring-engaged versions are available in all brake configurations.
Rotary Brakes
Air or spring-engaged, shaft-mounted friction brakes come with tapered bores to accept QD bushings or straight, bored and keyed-to-size disc hubs. Bushings are available to reduce the size of the standard, straight-bore models. Air-engaged brakes are used for stopping, holding, controlled deceleration, and tension control. Spring-engaged brakes are excellent stopping and holding devices. Multiple sizes provide torque up to 10,000 in-lbs.
Drum Brakes
Nexen's drum brakes are actuated with a diaphragm-sealed actuator that forces a brake shoe on a drum surface to provide the braking torque. Brake drums are bored and keyed to fit standard shafts. The brake shoes are clamped on the outside of the drum to provide brake torque up to 3750 in-lbs. Hinge top models offer a convenient feature to change rolls when the brake is used in tension control applications.
Caliper Brakes
Caliper brakes are used in controlled deceleration, cyclic stopping, holding, emergency stops, and tension control applications. Nexen offers a wide variety of caliper brake designs, including air actuated/spring-released, spring engaged/air-released, and spring engaged/hydraulic-released models. Several disc diameters up to 24-inches are offered to provide torque up to 50,000 in-lbs. Multiple calipers can be used on a single disc to increase torque and accommodate various disc thicknesses.
Friction Clutch-Brakes
Nexen’s Friction Clutch-Brakes combines the features of a Friction Clutch with a Friction Brake into a single unit. Standard models offer pilot mount, sheave mount and pilot mount with coupling half options. Pilot Mount units are available in various standard bores sizes with customization possible with bushings and couplings.
Friction Clutch-Brakes
Nexen’s Friction Clutch-Brakes combines the features of a Friction Clutch with a Friction Brake into a single unit. Standard models offer pilot mount, sheave mount and pilot mount with coupling half options. Pilot Mount units are available in various standard bores sizes with customization possible with bushings and couplings.
Friction Clutch-Brakes
Conveniently packaged clutches and brakes for a start and stop applications. Clutch-brake combinations have mounting features that make them adaptable to NEMA and IEC motor frames. All clutch-brakes operate on static air pressure.
Torque Limiters
A torque limiter protects mechanical equipment or its work from damage by mechanical overload. A torque limiter may limit the torque by slipping a friction plate clutch or disconnecting the load entirely. The action of a torque limiter is useful to limit any damage to the machine or product due to mechanical failures or product jams in the machine and is typically installed on the output side of gear reducers to protect the gear set.
Pneumatic Torque Limiters
Nexen’s pneumatically engaged, single-position torque limiters are the best overload protection devices available. The “TL” Series units are ball/detent clutches equipped with overload sensors.
Mechanical Torque Limiters
Nexen’s Torque Limiters protect the drive and driven components from damage associated with torque overloads caused by material jams, operator error, or various unforeseen reasons that pose a significant threat to machine downtime.
Tension Control
Precise tension control is vital to any web or strip-fed operation, and the product must be fed under tension, processed under tension and wound up again under tension. Tension controllers are an integral part of maintaining this set tension. Nexen tension controllers range from simple systems with diameter feedback (open loop) to dancer control systems and the highest precision systems using web tension sensor feedback (closed loop).
Tension Control Brakes
Nexen’s Tension Control brakes offer precise control over the full operating range – from the high torque needed to manage a large roll, to the lower torque requirements for more delicate materials and demanding applications.
Tension Control Clutches
Nexen's line of Modular Tension Control Clutches is designed to be the most flexible, maintenance-free pneumatic units available for continuous winding operations. Ruggedly built to endure the continuous drag and high heat load that tension control demands, yet extremely sensitive and responsive to a wide range of torque requirements.
Web Controls
Nexen’s Web Controllers are a closed-loop, load cell-based tension control products which use torque to control the tension of paper, film, foil, or fabric in all zones of web processing machines.
NexSafe® Safety Certified
All NexSafe® Safety Certified
Servomotor Brakes
Servomotor Brakes
Profile Rail Brakes
Profile Rail Brakes
Rod Locks
Rod Locks
Servomotor Brakes
Nexen’s Spring Engaged, Air Released Servomotor Brakes are available safety certified to comply with international safety standard ISO 13849-1. Category Level up to 4 and Performance Level up to e, can be achieved using NexSafe® products in recommended configuration.
Servomotor Brakes
Nexen’s Spring Engaged, Air Released Servomotor Brakes are available safety certified to comply with international safety standard ISO 13849-1. Category Level up to 4 and Performance Level up to e, can be achieved using NexSafe® products in recommended configuration.
Servomotor Brakes
Nexen’s Spring Engaged, Air Released Servomotor Brakes are available safety certified to comply with international safety standard ISO 13849-1. Category Level up to 4 and Performance Level up to e, can be achieved using NexSafe® products in recommended configuration.
Profile Rail Brakes
Nexen’s Rail Brakes Series of linear profile guide rail brakes uses spring force to secure the load in holding applications. Superior response time, high force for stopping and holding in e-stop and power-off situations. Each Rail Brake clamps directly onto the center of the guide rail to provide positive braking and holding in all axes, with no effect on bearing surfaces. These profile rail brakes hold position accurately by reducing drive train backlash and elasticity.
Profile Rail Brakes
Nexen’s Rail Brakes Series of linear profile guide rail brakes uses spring force to secure the load in holding applications. Superior response time, high force for stopping and holding in e-stop and power-off situations. Each Rail Brake clamps directly onto the center of the guide rail to provide positive braking and holding in all axes, with no effect on bearing surfaces. These profile rail brakes hold position accurately by reducing drive train backlash and elasticity.
Profile Rail Brakes
Nexen’s Spring Engaged, Air Released Rail Brakes are safety certified to comply with international safety standard ISO 13849-1. Category Level up to 4 and Performance Level up to e, able to be achieved using NexSafe® products in recommended configuration.
Rod Locks
Nexen’s Static Rod Locks deliver precision holding with virtually no backlash, providing high accuracy in demanding applications. These spring-engaged, air-released units come in both ISO and NFPA sizes. The Rod Lock’s large clamping surface ensures high clamping/holding force, and Nexen offers models for use on a pneumatic cylinder or as a stand-alone unit on a guide rod. The design is sealed and features a natural brushed aluminum finish or a corrosion-resistant, anodized finish.
Rod Locks
Nexen’s Static Rod Locks deliver precision holding with virtually no backlash, providing high accuracy in demanding applications. These spring-engaged, air-released units come in both ISO and NFPA sizes. The Rod Lock’s large clamping surface ensures high clamping/holding force, and Nexen offers models for use on a pneumatic cylinder or as a stand-alone unit on a guide rod. The design is sealed and features a natural brushed aluminum finish or a corrosion-resistant, anodized finish.
Rod Locks
Nexen’s Spring Engaged, Air Released Rod Locks are safety certified to comply with international safety standard ISO 13849-1. Category Level up to 4 and Performance Level up to e, can be achieved using NexSafe® products in recommended configuration.

With superior performance, these spring-engaged, air-released units supplement air cylinders and guide rods for holding in power-off/e-stop situations. High clamping forces ensure positive holding with minimal air required for release.
Accessories
All Accessories
Pneumatic Control Accessories
Pneumatic Control Accessories
Linear Couplings
Linear Couplings
Pneumatic Control Accessories
Nexen offers a number of Pneumatic Accessories for our line of products.
Pneumatic Control Accessories
Nexen offers a number of Pneumatic Accessories for our line of products.
Pneumatic Control Accessories
Nexen offers a number of Pneumatic Control Accessories for our products that allow for easy connections, servicing, and trouble-free performance.
Linear Couplings
Nexen’s Linear Couplings protect valuable equipment by controlling misalignment in linear motors, ballscrew actuators, pneumatic cylinders, and rods or sensors.
Linear Couplings
Nexen’s Linear Couplings protect valuable equipment by controlling misalignment in linear motors, ballscrew actuators, pneumatic cylinders, and rods or sensors.
Linear Couplings
Nexen's Linear Coupling help prevent binding or premature wear, Providing zero backlash misalignment control between linear actuators, ballscrew actuators, pneumatic cylinders, and rods or sensors.
Resources
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Rod Locks

About our Rod Locks

Nexen’s linear holding/locking devices take rod locking technology to the next level

Nexen’s Static Rod Locks deliver precision holding with virtually no backlash, providing high accuracy in demanding applications. These spring-engaged, air-released units come in both ISO and NFPA sizes and will accept standard accessories.

The Rod Lock’s large clamping surface ensures high clamping/holding force, and Nexen offers models for use on a pneumatic cylinder or as a stand-alone unit on a guide rod. Customers can further increase holding forces by stacking multiple Rod Locks together. The patent pending design is sealed and features a natural brushed aluminum finish or a corrosion-resistant, anodized finish suitable for food/washdown applications. Whatever your application, precision operation with hassle-free performance comes standard with each compact unit.

Maintains Accurate Positioning
The RLSS series of Rod Locks guarantees accurate positioning and provides precision holding while other operations are performed. The Rod Lock engages without causing rod displacement and features extremely low backlash, making them ideal for precision applications.

Large Clamping Surface
The RLSS line is designed with a large clamping surface that provides uniform force to the rod contact area on every engagement. The clamping mechanism utilizes numerous ball bearing to reduce friction.

Spring-Engaged Units Engage in Power-Off Situations
Nexen’s Rod Locks are spring-engaged, so they operate even in power-off situations to promote safety for operators and machinery. Multiple springs ensure reliable performance and redundancy. The fast response time of these spring-engaged products also increases positioning accuracy. Nexen’s Rod Locks also features a locking mode sensing capability that allows engagement/disengagement feedback with the use of an optional inductive sensor.

Operating Mode Sensors
The Operating Mode Sensor(s) can be used to signal the engagement or disengagement of the rod lock on the shaft. In an effort to give the system manufacturer the most versatility, the Operating Mode Sensors can be set up as Engagement or Disengagement and either redundant or individual states. Sensors ordered separately, are available in both PNP and NPN modes

Sealed to Withstand Harsh Environments
Every RLSS Rod Lock is sealed to protect internal components. These seals are designed to withstand even harsh wash-down environments and are IP67 rated (anodized models exceed NEMA 4X rating). Rod Locks are available in natural brushed aluminum or with a black anodized coating.

Manual Release
The cam-operated manual release feature mechanically disengages the rod lock with the simple turn of a hex screw using a standard wrench. The default-to-lock function springs back to the engaged position when released.

Contact a Nexen Engineer

Resources

Rod Lock System Technical Data

Rod Locks Video(s)

NexSafe Rod Lock

Compare our Rod Locks

CYLINDER Mount

	RLSSB-C NFPA Inch	RLSSB-C ISO Metric
Rod Diameter	0.625 to 2.500 in	12 to 32 mm
Cylinder Bore Size	1.500 to 8.000 in (Stand Alone units can’t be cylinder mounted)	32 to 125 mm (Stand Alone units can’t be cylinder mounted)
Minimum/Rated Holding Force	180 to 4020 lbf	800 to 8560 N
Starting Engagement Time	0.030 to 0.265 seconds	0.030 to 0.130 seconds
Actuation/Return	Spring Engaged/Air Released (4.1 bar [60 PSI] Standard)
Housing Finish	Natural Aluminum or Black Anodized Finish
Manual Release	Optional: 1/4 Turn Hex Head with Auto Reset
Static B10 /B10d Cycle Life	1 million /2 million cycles (Model 400-100 & 100-025 =100,000/200,000 cycles)
Operating Mode Sensor(s)	1 or 2 Optional proximity sensors for operational feedback. Can be configured to sense engagement or disengagement.
Safety Rating	NexSafe ISO 13849-1 Safety Certified

STAND ALONE Mount

	RLSSB-C NFPA Inch	RLSSB-C ISO Metric
Rod Diameter	0.625 to 1.375 in	12 to 32 mm
Cylinder Bore Size	1.625 to 6.000 in *Stand Alone units can’t be cylinder mounted.	32 to 125 mm *Stand Alone units can’t be cylinder mounted.
Minimum/Rated Holding Force	180 to 4020 lbf	800 to 8560 N
Starting Engagement Time	0.030 to 0.265 seconds	0.030 to 0.130 seconds
Actuation/Return	Spring Engaged/Air Released (4.1 bar [60 PSI] Standard)
Housing Finish	Natural Aluminum or Black Anodized Finish
Manual Release	Optional: 1/4 Turn Hex Head with Auto Reset
Static B10 /B10d Cycle Life	1 million /2 million cycles (Model 400-100 & 100-025 =100,000/200,000 cycles)
Operating Mode Sensor(s)	1 or 2 Optional proximity sensors for operational feedback. Can be configured to sense engagement or disengagement.
Safety Rating	NexSafe ISO 13849-1 Safety Certified

Required Components and Accessories for our Rod Locks

Listed below are some of the Required Components and Accessories for Rod Locks. Use the filters above to find the complete list of Required Components and Accessories on the product page.

Required Components

3-Way Valve

Accessories

Sensors
Control Kits
Filters
Flow Control Valves
Lubricator
Mufflers
Quick Exhaust/Shuttles
Regulators
Restrictor Valves

Applications

Nexen's Rod Locks offer precision holding with guide rod systems and NFPA or ISO Pneumatic Cylinders. A few applications our Rod Locks have been used in are:

Cyclical operations
Food production needing IP67
Gantry routing
Platen presses
Automotive Production

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Help with your application

Note: The technical data on this website is subject to change without notice. Please contact Nexen for help with your application, appropriate sizing, and configuration.

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Rotary Motion Control

Rotary Indexers

Rotary Indexers

Rotary Indexers

Roller Pinion Gears

Geared Bearings

Gears

Precision Brakes

Ball Screw Brakes

Shaft Brakes

Servomotor Brakes

Gearheads

Gearheads

Gearheads

Roller Pinion Racks

Roller Pinion Racks

Roller Pinion Racks

Linear Precision Brakes

Profile Rail Brakes

Rod Locks

Clutches

Friction Clutches

Tooth Clutches

Friction Brakes

Rotary Brakes

Drum Brakes

Caliper Brakes

Friction Clutch-Brakes

Friction Clutch-Brakes

Friction Clutch-Brakes

Torque Limiters

Pneumatic Torque Limiters

Mechanical Torque Limiters

Tension Control

Tension Control Brakes

Tension Control Clutches

Web Controls

Servomotor Brakes

Servomotor Brakes

Servomotor Brakes

Profile Rail Brakes

Profile Rail Brakes

Profile Rail Brakes

Rod Locks

Rod Locks

Rod Locks

Pneumatic Control Accessories

Pneumatic Control Accessories

Pneumatic Control Accessories

Linear Couplings

Linear Couplings

Linear Couplings

Family

Mounting Style

About our Rod Locks

Required Components and Accessories for our Rod Locks

Applications

More Information