Available in rubber (ML, SB)
or with metal plates (IR)
- The synthetic rubber used has excellent abrasion resistance, high tensile strength and tear resistance
- Rubber elasticity absorbs shock, with little load fragmentation
- Easy installation
- Excellent noise prevention for improved work environment
- Lightweight compared with metal liners, with easy and safe installation
Dump trucks, unloaders, hoppers, skip loaders, conveyor chutes, feeders, etc.
Wear Component™ is available in the
product types shown to the right.
■ Product type selection
Select the product type referring to the following table in accordance with the equipment where the product is installed.
■Comparison with other product types
- Design with higher durability is possible with a higher bar height.
- For the same area, Type ML requires less bolts than Block Liner does.
Type SB, Type IR (Block Liner)
- The flat lining mostly prevents sticking.
- The ease of installation is equivalent to a steel liner.
- Partial repair is easier than that of Type ML.
- The continuous sheets mostly prevent sticking.
- Easy to fit with a cone hopper.
■Thickness selection (chute, hopper)
List of correction factors by condition of use
■Rubber thickness selection table
Application： Chute Processed item： Iron ore Processed item size： －200 mm Size distribution： Many blocks Processed volume： 300 T/H Expected life： 2 years free of maintenance Control condition： Fine Angle of impact： 55° Drop： 1.5m
Ki in these conditions are:
Angle of impact K1=5 Specific gravity K2=5 Shape K3=2 Size distribution K4=2 Processed volume K5=2 Life K6=2 Control condition K7=0 K=Σ Ki=18
From the rubber thickness selection table,
the rubber thickness is 100 mm.
■Standard dimensions and combinations of ML plates and Wear bars (length 1,450 mm Unit: mm)
When the descending speed of the dropped items exceeds 10 to 15 m/sec,
the abrasion increases rapidly. In such a case, installing Type ML crosswise
(perpendicular lining to the direction of the blocks)
increases the angle of impact, which reduces
the descending speed and the abrasion.
When the belt is used in a section with especially
severe abrasion, higher durability and economy can be obtained.
There was an instance where changing the installation
from longitudinal installation to crosswise installation with
the same rubber liner specifications increased the life four-fold.
The figure on the right shows crosswise installation of Type ML.
SB plate standard dimensions
Installation bolts, nuts, and flat washers are also required.
(Note) The standard bolt is M16. When a large impact is applied, please use M20.
Examples of use
- Skip car
- Block conveyor chute
■Type IR (baked-on-steel type)
IR plate standard dimensions
Examples of use
- Screen chute/hopper
- Conveyor chute/hopper
■■ Selection of thickness of Type SB and Type IR (Block Liner)
When crushed rocks (specific gravity: 2.5) of 20 (cm) are dropped from a height of 1.5 m and the angle of impact is 60°, select the thickness as follows:
- ①Weight of the rock：
20 cm (depth) × 20 cm (width) × 20 cm (height) × 2.5 g/cm2 (specific gravity) = 20 (kg)
- ② Impact energy：
20 kg (weight of rock) × 1.5 m (drop) = 30 (kg·m) Plotting this as the impact energy of the vertical axis in the right figure, the point where it meets with the 60° angle of impact in the horizontal axis indicates that the liner thickness to select is 80 mm.
When the specific gravity is 3 or greater, or when the quantity of the processed items is significantly large, select a thickness thicker by one rank.
- The impact energy indicates the maximum weight (kg) × drop (m) of the processed item.
- The angle of impact indicates the angle (α) in the right figure.
- The graph for liner thickness selection in the upper right section shows the case when the specific gravity of the processed item is 3 or less.
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