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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