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
NexSafe™ Safety Certified
NexSafe™ Functional Safety certified Rod Locks, Rail Brakes and Servomotor Brakes provide a verified, reliable solution that machine builders can depend on. With ISO 13849-1 Functional Safety Certification by Intertek©, these brakes are capable of Categories B through 4 and Performance Levels PLa through PLe. With spring-engaged air-released functionality, these products are default to lock, ideal for emergency stopping and holding applications.
Servomotor Brakes
NexSafe Safety Certified Servomotor Brakes are powerful, high-torque brakes installed between the servo motor and the gearbox. Multiple engagement springs, an integrated clamp collar with backup keyways, and up to three operating mode sensors for feedback ensure confident, safe emergency stopping and holding.
Servomotor Brakes
NexSafe Safety Certified Servomotor Brakes are powerful, high-torque brakes installed between the servo motor and the gearbox. Multiple engagement springs, an integrated clamp collar with backup keyways, and up to three operating mode sensors for feedback ensure confident, safe emergency stopping and holding.
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 RB 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 RB 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
Contact

Rotary Indexers

About our Rotary Indexer Systems

Based on Nexen's innovative Roller Pinion technology, the patented Rotary Indexer Systems come complete with a precision-grade bearing and drive mechanism.

Packaged in a rigid housing, Nexen's Rotary Indexer System delivers exceptional accuracy, fast acceleration, high speed and load capacity, and can be engineered to meet the application requirements.

Nexen's Rotary Indexer Systems can start and stop at any incremental position. Also, users can change the motion profile by simply loading a new servo drive program. Unlike traditional cam-driven systems, Nexen's Rotary Indexers can handle peak torque inputs at any time, allowing for up to 2x faster indexing times.

The Nexen Rotary Indexer Advantage

High Indexing Precision
With an indexing precision of up to ± 11 ArcSec and repeatability of up to ± 1.2 ArcSec, Nexen's Indexers offer unmatched mechanical system capabilities.

Zero Backlash
Unlike other mechanical drive systems, Nexen's Indexers offer zero backlash options from the motor through the driven load.

High Load Capacity
Nexen's Rotary Indexers can handle loads up to 1575 kN (on PRD) by utilizing precision grade, high load capacity cross-roller bearing,

High Output Torque
Rotary Indexers have a maximum acceleration torque of up to 4,811 Nm and a Nominal torque of up to 2,625 Nm.

High Speed
Indexers are designed for speeds up to 304 RPM.

Large Open Center
The Indexer's design allows for a large open center for more application possibilities.

Smooth in Motion
Combining Nexen's RPS technology with a preloaded cross-roller bearing and an integrated motor/precision gearhead gives a rigid, smooth system.

Differences between PRD and CRD Systems

Precision Ring Drive Systems (PRD)
The PRD system is built on a precision machined steel plate with a guard that shrouds the gear and pinion. Numerous options are available, including a low-backlash Planetary Gearhead or zero backlash Nexen Harmonic Gearhead to drive pinion. Available output bolt circle diameters of 400, 750, 1100, or 1500 mm.

Compact Precision Ring Drive Systems (CRD)
The CRD system is built on a rigid, sealed cast iron housing that completely encloses the gear and pinion. Numerous options are available, including motor/gearbox-ready input, pre-installed low-backlash Planetary Gearhead, or pre-installed zero backlash Nexen Harmonic Gearhead to drive pinion. Available output bolt circle diameters of 150, 250, 350, or 550 mm.

Contact a Nexen Engineer

Resources

Rotary Indexers Technical Data

Overview of Rotary Motion Technologies

Rotary Indexers Application Examples:

Rotary Indexers Video(s)

Design World: What is a Rotary Indexing Table?

Ring Drive Products

Compare our Rotary Indexers

GEARHEAD Mounted, SEALED Housing

	CRD-PL	CRD-MRS-PL	CRD-HG
Gearhead	Low Backlash Planetary	Planetary	Zero Backlash Harmonic
Gearhead Ratio	4:1 to 300:1 (right angle also available)	3:1 to 300:1 (right angle also available)	50:1 to 120:1 (extremely compact)
Housing	IP65 Sealed Rigid Cast Iron	IP65 Sealed Rigid Cast Iron	IP65 Sealed Rigid Cast Iron
Indexer Ring Gear	Nexen Zero Backlash RPS Gear and Roller Pinion	Nexen Zero Backlash RPS Gear and Roller Pinion	Nexen Zero Backlash RPS Gear and Roller Pinion
Indexer Ring Gear Ratio	3.8:1 to 8.2:1	9:1 to 17.1:1	3.8:1 to 8.2:1
Input to Output Ratio	15.2:1 to 32.8:1	27.3:1 to 5130:1	190:1 to 984:1
Maximum Acceleration Torque	494 to 1066 Nm [4372 to 9435 in-lb]	119 to 544 Nm [1053 to 9435 in-lb]	532 to 1148 Nm [4709 to 10161 in-lb]
Nominal Torque	323 to 697 Nm [2859 to 6169 in-lb]	119 to 299 Nm [1053 to 2646 in-lb]	380 to 820 Nm [3363 to 7258 in-lb]
Maximum Backlash	9.4 to 20.3 ArcSec	17.4 to 39.4 ArcSec	0 ArcSec
One-Way Positional Accuracy	27 to 59 ±ArcSec	31 to 59 ±ArcSec	20 to 43 ±ArcSec
One-Way Repeatability	3.3 to 7.1 ±ArcSec	5.1 to 9.8 ±ArcSec	3.3 to 7.1 ±ArcSec
Maximum Velocity	120 to 225 RPM	23.5 to 304 RPM	11 to 25 RPM
Max Continuous Velocity	70 to 151 RPM	23.5 to 222 RPM	8 to 18 RPM
Output Inertia	0.227 to 4.600 kgm² [5.387 to 109.160 lbf²]	0.048 to 0.669 kgm² [1.139 to 15.876 lbf²]	0.227 to 4.600 kgm² [5.387 to 109.160 lbf²]

GEARHEAD Mounted, GUARDED Housing

	PRD-PL	PRD-HG
Gearhead	Low Backlash Size 4 Planetary	Zero Backlash Harmonic
Gearhead Ratio	4:1 to 300:1 (right angle also available)	50:1 to 120:1 (extremely compact)
Housing	Guarded	Guarded
Indexer Ring Gear	Nexen Zero Backlash RPS Gear and Roller Pinion	Nexen Zero Backlash RPS Gear and Roller Pinion
Indexer Ring Gear Ratio	6.4:1 to 22:1	6.4:1 to 22:1
Input to Output Ratio	25.6:1 to 6630:1	320:1 to 2652:1
Maximum Acceleration Torque	832 to 2860 Nm [7364 to 25313 in-lb]	1540 to ??? Nm [13630 to ??? in-lb]
Nominal Torque	544 to 1870 Nm [4815 to 16551 in-lb]	990 to ??? Nm [8762 to ??? in-lb]
Maximum Backlash	3 to 12 ArcSec	0 ArcSec
One-Way Positional Accuracy	11 to 35 ±ArcSec	13.0 to 20.1 ±ArcSec
One-Way Repeatability	1.2 to 4.2 ±ArcSec	1.6 to 2.4 ±ArcSec
Maximum Velocity	27 to 94 RPM	2.7 to 4.2 RPM
Output Inertia	1.39 to 112.95 kgm² [32.99 to 2680.34 lbf²]	1.39 to 112.95 kgm² [32.99 to 2680.34 lbf²]

GEARHEAD Mounted, OPEN Housing

	PRD-PL-No Guard
Gearhead	Low Backlash Size 4 Planetary
Gearhead Ratio	4:1 (others available)
Housing	Open
Indexer Ring Gear	Nexen Zero Backlash RPS Gear and Roller Pinion.
Indexer Ring Gear Ratio	6.4:1 to 22:1
Input to Output Ratio	25.6:1 to 88:1
Maximum Acceleration Torque	832 to 2860 Nm [7364 to 25313 in-lb]
Nominal Torque	544 to 1870 Nm [4815 to 16551 in-lb]
Maximum Backlash	3 to 12 ArcSec
One-Way Positional Accuracy	11 to 35 ±ArcSec
One-Way Repeatability	1.2 to 4.2 ±ArcSec
Maximum Velocity	27 to 94 RPM
Output Inertia	1.39 to 112.95 kgm² [32.99 to 2680.34 lbf²]

GEARHEAD & MOTOR Ready, SEALED Housing

	CRD-MRS-No Gearhead
Gearhead	None, Ready to Accept Gearhead/Motor
Gearhead Ratio	N/A
Housing	IP65 Sealed Rigid Cast Iron
Indexer Ring Gear	Nexen Zero Backlash RPS Gear and Roller Pinion.
Indexer Ring Gear Ratio	9:1 to 17.1:1
Input to Output Ratio	9:1 to 17.1:1
Maximum Acceleration Torque	288 to 544 Nm [2549 to 4815 in-lb]
Continuous Stall Torque	158 to 299 Nm [1398 to 2646 in-lb]
Maximum Backlash	0 ArcSec
One-Way Positional Accuracy	31 to 59 ±ArcSec
One-Way Repeatability	5.2 to 9.8 ±ArcSec
Maximum Velocity	161 to 304 RPM
Max Continuous Velocity	117 to 222 RPM
Output Inertia	0.048 to 0.669 kgm² [1.139 to 15.876 lbf²]

GEARHEAD & MOTOR Ready, GUARDED Housing

	CRD-MRG-No Gearhead
Gearhead	None, Ready to Accept Gearhead/Motor
Gearhead Ratio	N/A
Housing	Guarded Rigid Cast Iron
Indexer Ring Gear	Nexen Zero Backlash RPS Gear and Roller Pinion.
Indexer Ring Gear Ratio	9:1 to 17.1:1
Input to Output Ratio	9:1 to 17.1:1
Maximum Acceleration Torque	288 to 544 Nm [2549 to 4815 in-lb]
Continuous Stall Torque	158 to 299 Nm [1398 to 2646 in-lb]
Maximum Backlash	0 ArcSec
One-Way Positional Accuracy	31 to 59 ±ArcSec
One-Way Repeatability	5.2 to 9.8 ±ArcSec
Maximum Velocity	161 to 304 RPM
Max Continuous Velocity	117 to 222 RPM
Output Inertia	0.048 to 0.669 kgm² [1.139 to 15.876 lbf²]

GEARHEAD & MOTOR Ready GEARHEAD & MOTOR Ready, OPEN Housing

	CRD-MRO-No Gearhead
Gearhead	None, Ready to Accept Gearhead/Motor
Gearhead Ratio	N/A
Housing	Open
Indexer Ring Gear	Nexen Zero Backlash RPS Gear and Roller Pinion.
Indexer Ring Gear Ratio	9:1 to 17.1:1
Input to Output Ratio	9:1 to 17.1:1
Maximum Acceleration Torque	119 to 224 Nm [1053 to 1983 in-lb]
Continuous Stall Torque	119 to 224 Nm [1053 to 1983 in-lb]
Maximum Backlash	0 ArcSec
One-Way Positional Accuracy	31 to 59 ±ArcSec
One-Way Repeatability	5.2 to 9.8 ±ArcSec
Maximum Velocity	161 to 304 RPM
Max Continuous Velocity	117 to 222 RPM
Output Inertia	0.048 to 0.669 kgm² [1.139 to 15.876 lbf²]

MOTOR Mounted, SEALED Housing SEALED Housing

	CRD-DD
Gearhead	None, Includes Nexen Supplied Servomotor
Gearhead Ratio	N/A
Housing	P65 Sealed Rigid Cast Iron
Indexer Ring Gear	Nexen Zero Backlash RPS Gear and Roller Pinion.
Indexer Ring Gear Ratio	6.2:1 to 13.1:1
Input to Output Ratio	6.2:1 to 13.1:1
Maximum Acceleration Torque	367 to 770 Nm [3248 to 6815 in-lb]
Continuous Stall Torque	100 to 210 Nm [885 to 1859 in-lb]
Maximum Backlash	0 ArcSec
One-Way Positional Accuracy	20 to 41 ±ArcSec
One-Way Repeatability	3.2 to 6.9 ±ArcSec
Maximum Velocity	See Charts
Output Inertia	0.219 to 4.480 kgm² (Includes Motor Inertia) [5.197 to 106.312 lbf²]

Required Components and Accessories for our Rotary Indexers

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

Accessories

Grease
Indexer Dial Plate

Applications

Industries and Applications

Cutting Systems
Gantry Systems
Medical Products
Robotics
Aerospace
Machine Tool
Semiconductor
Material Handling
Robotics Integration
Aerospace
Assembly/Custom Machines
Defense
Theme Parks and Theatrical Events

More Information

Not finding what you are looking for?

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.

Nexen's X-Line of Rotary Indexers

Based on Nexen’s established Precision Ring Drive Systems, the new X-Line delivers up to 3 times more torque and 2.6 times moment load capacity in a compact package.

Nexen offers the X-Line in a comprehensive range of models to fit several applications. Contact Nexen for help with sizing your application.

CRDX350-PL

350X

CRDX550-PL

550x

PRDX750-PL

750x

CRDX350-PL

Performance Specs
One Way Positional Accuracy	+/- 47.7 ArcSec
One Way Repeatability	+/- 5.1 ArcSec
Angular Backlash	<20.4 ArcSec
Gear To Pinion Ratio	3.5:1
Gearhead Ratio	4:1
Total Ratio	14:1
Max Output Speed	161 RPM
Max Acceleration Torque	2245 Nm [19870 inlb]
Nominal Torque	1283 Nm [11355 inlb]

CRDX550-PL

Performance Specs
One Way Positional Accuracy	+/- 30.4 ArcSec
One Way Repeatability	+/- 3.2 ArcSec
Angular Backlash	<13.0 ArcSec
Gear To Pinion Ratio	5.5:1
Gearhead Ratio	4:1
Total Ratio	22:1
Max Output Speed	120 RPM
Max Acceleration Torque	3528 Nm [31225 inlb]
Nominal Torque	2016 Nm[17843 inlb]

PRDX750-PL

Performance Specs
One Way Positional Accuracy	+/- 21.8 ArcSec
One Way Repeatability	+/- 2.3 ArcSec
Angular Backlash	<9.5 ArcSec
Gear To Pinion Ratio	7.5:1
Gearhead Ratio	4:1
Total Ratio	30:1
Max Output Speed	54 RPM
Max Acceleration Torque	4811 Nm [42581 inlb]
Nominal Torque	2750 Nm [24339 inlb]

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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

NexSafe™ Safety Certified

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

Drive Station Style

Housing Type

About our Rotary Indexer Systems

The Nexen Rotary Indexer Advantage

Differences between PRD and CRD Systems

Required Components and Accessories for our Rotary Indexers

Applications

More Information

CRDX350-PL

CRDX550-PL

PRDX750-PL

CRDX350-PL

CRDX550-PL

PRDX750-PL