Crumb Rubber Plant Equipment Overview
A nine-item equipment list for a crumb rubber production plant organised by functional section — from tyre handling and shredding through secondary grinding, steel and fibre separation, mesh classification, and bagging.
| Section | Equipment | Function | Key Specifications |
|---|---|---|---|
| Tire Handling | De-beader + Tire Cutters | Bead removal, halving/quartering tires | 200-400 tires/hour |
| Primary Size Reduction | Two-Shaft Shredder | Reduces to 50-150 mm pieces | Low RPM (15-30), high torque, 2-10 TPH |
| Primary Size Reduction | Trommel Screen | Separates correctly-sized from oversize material | Oversize recirculates to shredder |
| Secondary Grinding | Rasper / Granulator | Reduces to 1-6 mm granules | Single-shaft, high-speed cutting |
| Secondary Grinding | Cracker Mill | Further reduces to 0.5-2 mm | Corrugated rollers, multiple passes |
| Separation | Magnetic Separator | Steel wire removal | Overhead belt + drum type |
| Separation | Air Classifier / Density Separator | Textile fiber removal | Aspiration + zigzag classifier |
| Classification | Vibrating Screens (multi-deck) | Grades crumb by particle size | 10, 20, 30, 40, 80 mesh |
| Packaging | Bagging Machine | Fills and seals bags | 25 kg or 1 tonne bulk bags |
Beyond definitions
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How to read this table
- Rows are organised by functional section in process sequence order.
- Key Specifications give the capacity, speed, or mesh size most relevant to sizing and selection decisions.
- The Cracker Mill and Vibrating Screen sections together determine the final crumb rubber particle size distribution — adjustments at these stages change the mesh distribution of the output.
About this table
A crumb rubber plant is a size reduction and separation sequence — starting from whole tyres and ending with classified rubber particles at specific mesh sizes. Nine distinct equipment items perform that transformation, and their configuration and specifications determine the mesh distribution, quality, and throughput of the final product. This table maps each item by functional section with its role and key specification.
The Tyre Handling section starts with a De-beader plus Tire Cutters — the de-beader removes the steel bead wire rings (the most difficult component for downstream shredders), and cutters halve or quarter the tyre to improve shredder feed consistency. At 200–400 tyres per hour, this section sets the maximum plant input rate. The Primary Size Reduction section uses a Two-Shaft Shredder (15–30 RPM, high torque, 2–10 TPH) to reduce tyres to 50–150 mm irregular chips, with a Trommel Screen after the shredder to separate correctly-sized material from oversize — oversize recirculates back to the shredder rather than advancing to the secondary grinder.
The Secondary Grinding section uses a Rasper or Granulator (single-shaft, high-speed cutting to 1–6 mm granules) followed by a Cracker Mill (corrugated rollers, multiple passes to 0.5–2 mm). The cracker mill step is where the final crumb rubber particle size is primarily determined — the gap between corrugated rolls is adjustable and is set for the target mesh. The Separation section uses a Magnetic Separator (overhead belt plus drum configuration) to remove liberated steel wire, followed by an Air Classifier or Density Separator (aspiration plus zigzag classifier) to remove textile fibres from the rubber stream. The Classification section uses multi-deck Vibrating Screens to sort the crumb rubber into size fractions — 10, 20, 30, 40, and 80 mesh products — for separate packaging. The Packaging section uses a Bagging Machine to fill and seal 25 kg or 1-tonne bulk bags depending on buyer requirements.
Key insights
- The Cracker Mill is the particle size control point in a crumb rubber plant — roll gap adjustment determines whether the output is 10-mesh (coarse) or 40-mesh (fine) crumb rubber.
- Two-stage metal removal (magnetic separator for steel, air classifier for fibres) is required to meet ASTM D5603 metal and fibre content limits that institutional buyers specify.
- Trommel Screen recirculation is essential — without it, oversize material advances to the rasper and causes premature blade wear and inconsistent output particle size.
- Multi-deck vibrating screens enable selling multiple mesh grades from the same plant simultaneously — a plant separating 10-mesh, 20-mesh, and 40-mesh products can access three separate buyer markets from one production run.
Methodology & sources
Equipment specifications are indicative ranges for standard commercial crumb rubber plant equipment as of 2024. Actual throughput and specifications depend on tyre type, moisture content, and equipment make. Indian-manufactured equipment is available for most items; European and Chinese equipment imports are common for shredders and cracker mills at higher-quality specifications.
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