Rail Brake Catalog

Product catalog summary

Introduction
Nexen's RB Series of linear profile guide rail brakes are designed for high performance in holding applications using spring force. They offer superior response time and high force for stopping and holding in emergency stop (e-stop) and power-off situations. The brakes clamp directly onto the guide rail, ensuring accurate position holding by reducing drive train backlash and elasticity. A redundant safety system is recommended for personnel safety.

Key Features

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.
Easy installation with brake geometry similar to linear bearing cassettes.
Stiffness and vibration elimination in linear drives.
No lubrication or periodic maintenance required.
Models available for most common profile guide rails.
Highest spring engaged/air released holding force on the market.
Static holding cycle life exceeds one million cycles.

Specifications
The document provides detailed specifications for various models (RB15B, RB20B, RB25B, RB30B, RB35B, RB45B, RBL55B, RBL65B) including holding force, backlash, release pressure, engagement time, and mass. For example, the RB15B model has a holding force of 500 N, a maximum backlash of 0.10 mm, and a mass of 0.41 Kg.

Compatibility
The brakes are compatible with various rail types from manufacturers like HIWIN, IKO, INA, LINTECH, NB, NOOK, NSK, PMI, ROCKFORD, SBC, SCHNEEBERGER, SKF, STAR (BOSCH), TBI, THK, and THOMSON. Specific product numbers are provided for each rail type.

Dimensions and Mounting
Detailed dimensions and typical mounting arrangements are provided for each brake model. Additional dimensions and tolerances are available on Nexen's website.

Sample Calculations
Sample calculations for emergency stops are provided, illustrating dynamic stopping time and distance for horizontal and vertical travel. For instance, using the RB25B model, a load will travel 31 mm from engagement to a complete stop in horizontal travel.

Contact Information
Nexen Group, Inc. is ISO 9001 certified and has sales offices worldwide. For the latest product information, visit www.nexengroup.com.

Catalog excerpts

LINEAR MOTION CONTROL Technical Data Sheet Profile Rail Brake, Generation II

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Nexen’s RB Series of 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 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. Nexen’s RB Series is engineered for dependable performance. With a revolutionary set of patented features, the RB Series provides an...

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Facing Return Spring Driven Actuator Engagement Springs Roller Bearings Friction Facing Driving Wedge Support Driving Wedge Specifications Model

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1 Rail brake holding forces are 10% less than shown on the previous page when used with THK: “SR”, Hiwin: “HGR” and NB: “SGL” rail types. 2 RB15 product numbers 968135, 968141,968177, 968223 and 968179 have a holding force of 400 N [90 lbs]. 3 Contact Nexen for Availability. 4RBL65 Not Recommended for E-Stops. 5RBL55 and RBL65 are not C£ rated.

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‘Additional dimensions and tolerances are available in the drawings and CAD models on the product pages on Nexen's website. Transition Plate Nexen Rail Brake

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SAMPLE DATA 'For brake specifications, see Specifications Table on page 4. 2RBL65B not recommended for E-Stops. HORIZONTAL TRAVEL (X and Y axis) Dynamic Stopping Time (in seconds): m • V tj = ■ + te VERTICAL TRAVEL (DOWNWARD) (Z axis) Dynamic Stopping Time (in seconds): Dynamic Stopping Distance (in meters): Dynamic Stopping Distance (in meters): Distance of Travel During Brake Engagement (Le) L = V • t e e Distance of Travel During Brake Engagement (Le) Le = 0.5 • (te2) • g + V • te Le = 0.5 • (.0502) • 9.8 + .5 • .050 = 0.037 meters Stopping Distance (Ls) at Full Brake Force Stopping...

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CUTTING SYSTEMS GANTRY SYSTEMS MEDICAL PRODUCTS ROBOTICS INDUSTRIES & APPLICATIONS AEROSPACE MACHINE TOOL SEMICONDUCTOR MATERIAL HANDLING www.nexengroup.com In accordance with Nexen’s established policy of constant product improvement, the specifications contained in this document are subject to change without notice. Technical data listed in this document are based on the latest information available at the time of printing and are also subject to change without notice. For current information, please consult www.nexengroup.com Nexen Group, Inc. 560 Oak Grove Parkway Vadnais Heights, MN 55127...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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