PARAMETER RUBBER LAGGING NR/SBR RUBBER LAGGING FRAS CN POLYURETHANE LAGGING COLD VULCANISED CERAMIC LAGGING HOT VULCANISED CERAMIC LAGGING DIRECT BOND CERAMIC LAGGING
Bond Type CV,HV CV,HV CV,HV CV HV DBCL
DIN Abrasion (mm3 volume loss) < 90 < 150 < 40 N/A N/A N/A
Use On Drive Pulleys YES YES NO YES YES YES
Use On Non Drive Pulleys YES YES YES YES YES YES
Resistance to Build Up MINIMAL MINIMAL YES SOME SOME YES FOR PLAIN , NO FOR DRIVE
Lagging Service Life (typical) (years) 1-2 1 3-5 >10 >10 >10
Cost to Install Lagging $4,000 $4,000 $4,000 $4,000 $4,000 $6,000
Cost of Lagging $625 $800 $2,500 $4,600 $4,950 $4,800
Total Lagging Cost per Pulley $4,625 $4,800 $6,500 $8,600 $8,950 $10,800
Number of Relags in 10 years 6 10 2 1 1 1
Number of Plant Down Times 6 10 2 1 1 1
Number of OH&S Exposures 6 10 2 1 1 1
Lagging Cost Over 10 Years $27,750 $48,000 $13,000 $8,600 $8,950 $10,800
Time Required for Lagging (hours) 8 8 8 8 12 48

Yellow-Chip  Based on 1000mm diameter x 2,000mm face width pulley

CV = Cold Vulcanised
HV = Hot Vulcanised
DB = Direct Bond

PARAMETER

COLD VULCANISED CERAMIC LAGGING HOT VULCANISED CERAMIC LAGGING

DIRECT BOND CERAMIC LAGGING

Bond Failure Lagging to Pulley Minimal rubber tear 100% rubber tear 100% Epoxy Tear
Adhesion strength to Pulley > 9.0 (N/mm2) > 20.0 (N/mm2) > 20.0 (MPa)
Adhesion strength to Ceramic Tile > 6.0 (MPa) > 6.0 (MPa) > 20.0 (MPa)
On site application Yes No No
Factory application Yes Yes Yes
Stable rubber hardness Yes Yes N/A
Joins Yes No No
Curing Room Temp 130-140C Room Temp
Bonding Pressure Rubber Hammer Autoclave 400-600KPa N/A
Bonding pressure duration Seconds 4 hours N/A
Belt Cover wear No No Yes for Drive Pulleys
No for Non Drive Pulleys
Time Required for Lagging (hours) 8 12 48
Factory Application – Drive Pulleys No Preferred OK – may cause belt cover wear
Factory Application – Non Drive Pulleys No Preferred Preferred
Field Application- Drive Pulleys Yes No OK – may cause belt cover wear
Field Application – Non Drive Pulleys Yes No Preferred

N/A = Not Applicable

Yellow-Chip  Rubber Backed Ceramic Lagging Thickness to minimise slippage and belt cover wear

12mm Low Belt Tensions
15mm Medium Belt Tensions
20mm High Belt Tensions