| PARAMETER | RUBBER LAGGING NR/SBR | RUBBER LAGGING FRAS CN | POLYURETHANE LAGGING | COLD BOND 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 | YES | NO | YES | YES | YES |
| 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 |
Based on 1000mm diameter x 2,000mm face width pulley
CV = Cold Vulcanised
HV = Hot Vulcanised
DB = Direct Bond
| PARAMETER | COLD BOND 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 |
| 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 | No |
| Field Application – Drive Pulleys | Yes | No | OK – may cause belt cover wear |
| Field Application – Non Drive Pulleys | Yes | No | Preferred |
N/A = Not Applicable
Rubber Backed Ceramic Lagging Thickness to minimise slippage and belt cover wear
12mm Low Belt Tensions
15mm Medium Belt Tensions
20mm High Belt Tensions