Product introduction:
Belt Return Roller is also called rubber belt support roller. The roller body is steel with rubber coating. Shaft can be steel or stainless steel. They are parts of vacuum belt filter also.
The design and manufacture of all rollers (including the rubber belt support roller, the filter cloth supporting, bend and tension rollers, the filter cloth press roller, and the cloth flattening roller) are with low bending stress, that means the roller will not bend during load running; the bearings of all rollers adopt self-positioning double-seal ball bearings, and simultaneously the sealing effects are fully taken into account, the mother liquid is not allowed to enter the bearing body. The structure that the bearing body is placed externally and fixed on the framework is not recommended.
Position shows below:
Technical Features:
1. Diameter: 108-408mm
2. Pulley body length: 500-4600mm
3. Material of rubber covering: SBR, NR, EPDM
4. Shaft material: 45# steel, different kinds of stainless steel
Main standards:
1. Sand blast the surface of steel body, and the grade needs to be Ra2.5
2. Required rubber cover physical performance:
2.1 Tensile strength: ≧18Mpa
2.2 Elongation rate: ≧180%
2.3 Abrasion loss: ≦1m3/1.61km
2.4 Aging factor(70℃×48hours):≧0.8
3. Rubber and steel adhesive strength: ≧6Mpa
Manufacturing photos:
Rubber covering before vulcanization
Machining after vulcanization
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