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| Lagging |
- RASP distributes and applies
various types of drum and wing pulley lagging
- lagging is a form of coating which
serves to optimize both the wear and the drive traction
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Standard Lagging |
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- Hot vulcanized rubber lagging
- offers a proven high quality bond
- available plain (smooth) or grooved (chevron and diamond patterns)
- rubber compound can also be selected to suit specific applications or offer special
properties (SBR, neoprene, natural rubber, etc.)
- hardness can be varied from 40 to 70 Shore A for optimal performance in
different pulley positions (harder for drive pulleys, softer for
idlers)
- Cold bonded rubber lagging
- does not offer the same bond strength as hot vulcanized
- gaining popularity due to the development of high-strength
contact cements
(e.g., REMA SC2000)
- main advantages are:
- easy installation
- availability of a vast variety of different materials
- prompt service, since the work can usually be
performed in shop or in the field
- Ceramic lagging
- usually a cold bonded product, consisting of ceramic tiles embedded in the
sheet of rubber
- delivers the highest coefficient of friction
- ideal for wet and slippery conditions, where belt traction presents a problem
- Slide lagging
- offers replaceable slats of rubber, neoprene or urethane polymers
- metal-banded strips are pressure bonded and mechanically
fastened by welding or bolting to steel or stainless steel
backing pads, which are formed to suit standard pulley diameters
- retaining clips are welded to the pulley shell
allowing the lagging strips to slide in between
- strips come in 6ft lengths
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Slide slats
- this RASP designed lagging system consists of replaceable
caps on self-cleaning wing pulleys
- available in rubber, neoprene and urethane.
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Engineered Class Lagging |
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The above
mentioned lagging products can be adapted for extreme conditions
where engineered class pulleys are required. In addition, RASP
offers the following Engineered Class Lagging Products:
- Urethane lagging
- offers excellent wear properties
- poses a very low coefficient of friction
- can significantly increase power requirements and slack-side belt tensions
when used in drive pulley applications
- recommended only for idlers or where extremely abrasive materials
cause premature lagging wear
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