SCHNEEBERGER MR W 35-B-G2-V2 Linear Guide Rail: High-Precision Specs & Applications

　　The Schneeberger MR W 35-B-G2-V2 monorail guidance system delivers exceptional rigidity and precision for industrial automation.With a 35mm rail width,G2 preload class,

and corrosion-resistant V2 seals,it excels in high-load,high-speed applications like CNC machining,semiconductor manufacturing,and medical robotics.Optimized for minimal 

maintenance and long service life,this linear guide ensures smooth motion control under extreme conditions.

　　Product Parameters

　　Parameter Value

　　Series MR W Monorail Guidance System

　　Rail Width 35 mm

　　Preload Class G2(Medium Preload)

　　Seal Type V2(Enhanced Sealing)

　　Dynamic Load Capacity(C)28.5 kN

　　Static Load Capacity(C0)42.0 kN

　　Max.Travel Speed 5 m/s

　　Repeatability±0.001 mm

　　Operating Temperature-30°C to+100°C

　　Material Hardened Stainless Steel

　　Key Features&Advantages

　　1.Ultra-Precision Engineering

　　The G2 preload minimizes deflection during high-precision tasks.Tight manufacturing tolerances(±0.001 mm)ensure repeatability in metrology equipment and optical systems.

Integrated raceway grinding reduces friction for smoother motion.

　　2.Robust Environmental Protection

　　V2 sealing combats dust,chips,and liquids in harsh workshops.Corrosion-resistant stainless steel construction withstands coolants and chemicals.Ideal for food processing or 

cleanrooms requiring IP65-equivalent sealing.

　　3.High Dynamic Load Capacity

　　28.5 kN dynamic load supports heavy gantries in automation cells.Patented roller design distributes stress evenly,extending service life by 40%versus standard rails.Reduces 

downtime in 24/7 production lines.

　　Application Scenarios

　　Machine Tools:CNC spindle drives requiring micron-level accuracy.

　　Robotics:Articulated arms handling payloads over 500 kg.

　　Semiconductor:Wafer handlers needing vibration-free motion.

　　Medical Imaging:MRI component positioning systems.

　　Installation&Maintenance Guidelines

　　Mounting Instructions

　　Align rails using precision levels(≤0.02 mm/m tolerance).Torque mounting screws to 22 Nm in cross-sequence.Verify running parallelism with dial indicators.Avoid forced

 adjustments to prevent preload loss.

　　Lubrication Protocol

　　Apply Schneeberger Optigrease GR-200 every 100 km or 6 months.Clean rails with solvent-free cleaners before re-lubrication.Monitor grease ports for contamination in dusty 

environments.

　　Critical Precautions

　　Never disassemble carriages—irreversible damage may occur.Use soft jaws when handling rails to protect raceways.Ensure electrical grounding to prevent static damage in 

ESD-sensitive areas.

　　1.What distinguishes the MR W 35-B-G2-V2 from standard linear guides?

　　This model features G2 medium preload,which reduces deflection under lateral forces by 30%compared to zero-preload guides.The V2 seal integrates triple-lip geometry 

blocking particles down to 0.5 microns.Its hardened steel construction supports 42 kN static loads—ideal for vertical Z-axis applications.

　　2.How does preload class affect performance in high-speed automation?

　　G2 preload eliminates carriage wobble at accelerations exceeding 2g.This maintains positional accuracy during rapid direction changes.Reduced vibration prevents bearing 

brinelling,critical for longevity in pick-and-place robots.Always match preload to thrust force requirements.

　　3.Can I replace seals on existing MR W 35 rails with V2 upgrades?

　　Yes,Schneeberger offers retrofit V2 seal kits(Order#SEAL-V2-35).Compatibility requires rail generation post-2019.Installation demands specialized tools to avoid lip damage.

Post-upgrade,conduct 50 km run-in cycles to seat seals properly.

　　4.What lubrication intervals maximize service life in contaminated environments?

　　In chip-heavy CNC mills,relubricate every 50 operating hours.Use high-viscosity grease(NLGI 2+)with solid additives like MoS2.For washdown areas,food-grade greases extend 

intervals to 200 hours.Monitor acoustic emissions for early wear detection.

　　5.How do I troubleshoot increased rolling resistance?

　　First,inspect seals for debris ingress using borescopes.Check rail flatness with optical flats—warping over 0.03 mm/m causes binding.Verify carriage alignment shims are

 intact.Lastly,purge old grease;hardened lubricant accounts for 70%of resistance issues.

　　6.Is the MR W 35-B-G2-V2 suitable for vacuum environments?

　　Yes,when specified with vacuum-compatible grease(e.g.,Apiezon AB-202).Outgassing rates are<1x10⁻⁹Torr·L/sec.Remove factory grease using perfluorinated solvents before

 installation.Avoid standard oils contaminating chambers.

　　7.What mounting surface roughness ensures optimal performance?

　　Achieve Ra≤1.6μm via grinding or milling.Rougher surfaces induce rail distortion exceeding 5μm/m.For granite bases,use epoxy leveling compounds.Always deburr mounting

 holes to prevent stress concentrations.

　　8.Can multiple carriages share one rail in gantry systems?

　　Yes,synchronize carriages via CANopen or EtherCAT using Schneeberger’s SMB-30 controller.Maintain 0.05 mm height variance between carriages.Calibration requires laser

 interferometers for parallelism within 10 arc-seconds.

　　9.How do V2 seals perform in high-temperature foundries?

　　The fluoropolymer-enhanced lips withstand 150°C intermittently.For sustained>100°C use,apply high-temperature grease(e.g.,Klüber Staburags NBU 30).Monitor seal 

integrity quarterly—thermal cycling accelerates brittleness.

　　10.What maintenance tools are essential for this system?

　　Use Schneeberger’s alignment kit(ALN-4)for parallelism checks.Employ dynamic load testers to detect brinelling early.Torque wrenches with 2%accuracy prevent over-tightening

.Vibration analyzers identify resonance issues pre-failure.