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4mm vs 5mm vs 6mm Felt: Which Thickness is Right for Your CNC Cutting Machine?


Detailed Comparison Table

Feature 4mm Felt Belt 5mm Felt Belt 6mm Felt Belt
Tensile Strength ≥120 N/mm ≥150 N/mm ≥180 N/mm
Abrasion Resistance Good Very Good Excellent
Vacuum Suction Standard Enhanced Maximum
Lifespan 12-18 months 18-24 months 24-36 months
Price (per meter) 18−22∣ 18−22∣22-28 $28-35
Best For Fabric, foam, thin materials Multi-material, general use Abrasive, heavy materials
Machine Speed Up to 40m/min Up to 60m/min Up to 80m/min
Material Grip Standard Enhanced Maximum
Heat Resistance Up to 120°C Up to 150°C Up to 180°C

Machine Compatibility Guide

Gerber Cutter Compatibility

Gerber Model 4mm 5mm 6mm Recommended
S7200 5mm (Standard)
S9200 5mm (Standard)
GT7250 5mm (Standard)
GT6175 4mm or 5mm
Z7 5mm (Standard)
XLC7000 6mm (Heavy-duty)

Lectra Cutter Compatibility

Lectra Model 4mm 5mm 6mm Recommended
VT 5mm (Standard)
GX 5mm (Standard)
FX 6mm (Heavy-duty)
Vector 5mm or 6mm

Other Brand Compatibility

Brand Series Recommended Thickness
Bullmer All Models 5mm (Standard)
Kongsberg C Series 5mm or 6mm
Zünd G3, S3 5mm (Standard)
Shima Seiki All Models 4mm or 5mm

Maintenance Tips

✓ Clean belt surface weekly with soft brush
✓ Check tension every 2 weeks (optimal: 2-3% elongation)
✓ Inspect edges for wear monthly
✓ Rotate belt position every 6 months (even wear)
✓ Replace when thickness reduces by 20%
✓ Keep spare belt on hand to minimize downtime