Nexen Group, Inc.

United States

Make your machines run faster and more accurately with less maintenance. The new, patented RPS engages two teeth simultaneously to achieve unmatched accuracy with zero backlash - in any desired length! This amazing system is also extremely quiet, 99% efficient and can run without lubrication. Overcome the speed, accuracy, load and noise limitations of rack and pinion, ball screw and belt drive technologies with a lower maintenance, longer lasting solution.

PROFILE RAIL BRAKE FEATURESBENEFITS: Large friction facing contact area for consistent performance and low rail wear Field serviceable friction facing replacement Ideal for power-off, e-stop and holding applications Low backlash for accurate position holding Brake geometry is similar to linear bearing cassettes for easy installation Provides stiffness and eliminates vibration in linear drives Large clearance between brake and rail compensates for installation misalignment No lubrication or periodic maintenance required Models available to fit most common profile guide rails Highest spring engaged air released holding force on the

Nexens 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 Locks large clamping surface ensures high clampingholding 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.

Ball Screw brakes provide reliable holding in a compact package. During a power loss the motor has no holding torque allowing the ball screw to back drive and the load to drop. Ball screw brakes connect to the machined end of the ball screw to prevent back driving, load drops and equipment damage during a power loss. Holding force up to 125 Nm (1100 in-lbs.)

Linear motion accessories include ISO adapters, ISO preloaders, rack segment alignment tools, and gear tooth lubrication for the Roller Pinion System. Accessories for pneumatic linear brakes include proximity sensors for rod locks, ball screw brake couplings, 3 way valves, filters, lubricators, and regulators.

Two versions are available both based on Nexens innovative Roller Pinion technology. The Compact Ring Drive (CRD) system comes complete with a precision grade bearing and drive mechanism in a sealed housing. Three configurations allow the CRD to be optimized for high speed, high torque or both to optimize performance in a small space. The Precision Ring Drive (PRD) consists of a precision grade preloaded cross roller bearing, roller pinion system and precision gearbox offering load capacity capabilities to 1575 kN. The CRD and PRD take rotary positioning to a higher level of performance, providing unmatched positional accuracy, high rigidity and acceleration, low maintenance, and long life.

The Roller Pinion Gear System (RPG) is based on an innovative pinion consisting of bearing-supported rollers and a unique tooth profile. Solutions including gears, gear segments and geared bearings can be configured to fill your needs. This unique drive system provides very high positional accuracy, zero backlash, no cumulative error, low-velocity ripple, very high speeds, high 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 levels of performance.

Nexens I-300 brake is designed for zero backlash holding and emergency stopping making it ideal for indexers and positioning systems. The spring engaged, air released, patented braking element locks and holds the shaft in position without any displacement or reversing of the load. It is flange or shaft mounted and has a keyless compression bushing shaft connection for easy installation and IP67 rated when flange mounted.

Spring engaged, air released servo motor brakes mount to the shaft end of servo motors up to 20 horsepower. The brake acts as an adapter between dissimilar mounting features. The brake bore accepts the motor shaft that is fixed inside the brake with a split hubshaft collar. This brake is a high-torque, zero backlash device.

Linear Couplings Provide Zero Backlash Misalignment Control Between Linear Actuators Like Linear Motors, Ballscrew Actuators, Pneumatic Cylinders, And Rods Or Sensors They Drive To Prevent Binding Or Premature Wear.