Spring linear brake NexSafe®

linear guide

Product overview
Nexen Group's NexSafe® profile rail brakes are spring-engaged, air-released devices that clamp directly onto linear guide rails to provide positive stopping and holding without affecting bearing surfaces. Designed for safety-rated applications, they deliver fast response and high holding force for e-stop and power-off conditions.

Key features

• Large friction-facing contact area for consistent braking and low rail wear
• Suitable for power-off, emergency-stop and holding applications
• Low backlash (0.10–0.20 mm) for accurate position holding
• Brake geometry compatible with linear bearing cassette form factors for simplified installation
• Reduces vibration and increases stiffness in linear drive systems
• Large clearance compensates for installation misalignment
• No lubrication or periodic maintenance required
• Models available to fit common profile guide rails
• Highest spring-engaged / air-released holding force in its category
• Long rated life: B10 up to 2 million cycles; page references B10D claim of 4 million cycles

Optional operating mode sensors
One- or two-sensor options can signal engagement or disengagement. Using operating mode sensors can support higher safety category ratings per ISO 13849-1. Nexen sensors are Industry 4.0 compatible and can provide status data to improve machine availability and diagnostics.

Rail compatibility
Available for common profile guide rail manufacturers: ABBA, HIWIN, IKO, INA, LINTECH, NB, NOOK, NSK, PMI, ROCKFORD, ROLLON, SBC, SCHNEEBEERGER, EWELLIX (SKF), STAR (BOSCH REXROTH), TBI, THK, THOMSON.

Technical literature (titles)

• Safety Certified Rail Brake Literature
• Certified Safety Product Literature
• NexSafe Product Overview

Technical specifications

• Series: NexSafe® Profile Rail Brakes
• Profile rail sizes: 15, 20, 25, 30, 35, 45
• Minimum holding force: 500 to 2600 N (≈112 to 585 lb)
• Minimum release pressure: 5.5 bar (≈80 psi) (lower pressures available for some models)
• Maximum backlash at full brake force: 0.10 mm to 0.20 mm (≈0.004 in to 0.008 in)
• Starting engagement time: 0.049 to 0.080 s
• Cycle life (B10): table lists 2 million cycles; page references B10D claim of 4 million cycles
• Operating mode sensors: 1 or 2 sensors; configurable for engagement or disengagement detection
• Safety rating: ISO 13849-1 certified (up to Category 4 / Performance Level e in recommended configurations)
• Design: spring-engaged, air-released; clamps to guide rail; no bearing surface contact; no lubrication required
• Typical applications: e-stop and redundant safety braking for gantry axes, industrial doors, packaging lines, medical equipment, and other safety-critical linear systems