Rubber Lagging Pulley

Rubber lagging pulley is to cover a layer of rubber on surface of the steel drum by hot vulcanization or cold bonding process, which is used to reduce the wear of the metal and protect to extend the service life of the conveyor belt.

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Detail Description

The types of rubber that can be used to cover the drum are: NBR, CR, HYPLON, PU, SBR, SR, and so on. Which can be customized according to your product using environment and product design requirements.

Product Parameters

General rubber performance parameters as follows:

1:physical and mechanical properties of surface rubber:

Test items		Request	Actual Test	Conclusion
MPa tensile-strength (Mpa)		≥18	20	qualified
Elongation at break(%)		≥300	317	qualified
Permanent set of pull-apart(%)		≤25	24	qualified
SHAW type A Hardness	Bend Pulley	60~70	70	qualified
	Driving pulley	≥70
Abrasion Loss(mm3)		≤90	88	qualified
aging coefficient(70℃×168h)	tensile-strength	-25~+25	20	qualified
	change rate(%)
	Elongation
	at break change rate

2:physical and mechanical properties of bottom rubber:

Test Items	Request	Actual Test	Conclusion
MPa tensi l e-strength(Mpa)	≥30	30	qualified
elongation at break(%)	≥300	330	qualified
anti-breakdown strength(Mpa)	≥69	80	qualified
heat-resistance (℃)	80	85	qualified
Adhesion strength between rubber and metal(Mpa)	≥4.0	4.9	qualified
Adhesion strength between rubber and metal after heat treatment(Mpa) (hot air method for heat treatment，temperature 1452±2℃，time:150 minutes.)	≥3.2	5	qualified