ASTM D378 — read the full explanation
TensileStandard test methods for rubber (elastomeric) conveyor and transmission belting — tension testing.
Mining, bulk handling & conveyor systems
Conveyor Belt and Material Testing for Mining and Bulk Handling
Understand how the belt carries load, how its layers hold together and how it responds to repeated loading. DAK testing systems support conveyor-belt and related material evaluation, with the machine, specimen holding and measurement configured around the result your laboratory needs.
DAK systems
Build the test programme around the belt
Full-thickness tension, layer adhesion and repeated-load testing place different demands on a setup. Select the frame, working force range, grips and extension measurement together.
Flagship platform
Series 7200 Universal Testing Machine
DAK’s flagship platform combines flexible test programming, precise specimen setup and measurement with analysis and reporting. Explore Series 7200 for belt-development programmes, demanding quality control and tests that require programmed loading sequences.
Established laboratory methods
Series 9000 Universal Testing Machine
Travel-controlled testing with standalone Console operation or a PC-connected workflow. Explore Series 9000 for established tensile and adhesion methods, with the specimen, working range and measurement specified for the application.
See DAK conveyor-belt testing
The Series 7200 video library includes a conveyor-belt testing demonstration. Open the library and choose the conveyor-belt application to see the existing DAK demonstration.
Tests and results
Which part of the belt’s performance are you measuring?
| Testing question | Plan the specimen and result | Explore the method |
|---|---|---|
| Full-thickness strength and elongation | For textile-carcass belts, connect the longitudinal tensile-strength requirement to the specified elongation measurements. Record the belt construction, specimen width and thickness, reference load and gauge-length requirements. | |
| Ply-to-ply and cover adhesion | Identify the interface you need to separate: one textile ply from another, or a cover from the carcass. Choose the applicable peel method and specimen preparation so the force trace represents the intended bond. | |
| Steel-cord belt properties | Cord tensile strength, cord-to-coating bond and cover-to-core adhesion are separate measurements. Identify the required interface or reinforcement test before selecting how the specimen is held and loaded. | |
| Resistance to tear propagation | For textile conveyor belts, define whether the full thickness or carcass is being evaluated and how the initial tear is prepared. Tear propagation assesses a different failure process from an uncut tensile specimen. | |
| Mechanical fastening strength | Specify the belt construction, fastener and prepared joint. ISO 1120 addresses static mechanical-fastening strength; vulcanised splice evaluation needs its own specimen and loading plan. | |
| Elastic and permanent elongation | For a repeated-load programme, define the loading sequence and the extension results to be reported. ISO 9856 addresses elastic and permanent elongation and elastic modulus; this is a different question from measuring only the breaking load. |
Full-thickness strength and elongation
For textile-carcass belts, connect the longitudinal tensile-strength requirement to the specified elongation measurements. Record the belt construction, specimen width and thickness, reference load and gauge-length requirements.
Ply-to-ply and cover adhesion
Identify the interface you need to separate: one textile ply from another, or a cover from the carcass. Choose the applicable peel method and specimen preparation so the force trace represents the intended bond.
Steel-cord belt properties
Cord tensile strength, cord-to-coating bond and cover-to-core adhesion are separate measurements. Identify the required interface or reinforcement test before selecting how the specimen is held and loaded.
Resistance to tear propagation
For textile conveyor belts, define whether the full thickness or carcass is being evaluated and how the initial tear is prepared. Tear propagation assesses a different failure process from an uncut tensile specimen.
Mechanical fastening strength
Specify the belt construction, fastener and prepared joint. ISO 1120 addresses static mechanical-fastening strength; vulcanised splice evaluation needs its own specimen and loading plan.
Elastic and permanent elongation
For a repeated-load programme, define the loading sequence and the extension results to be reported. ISO 9856 addresses elastic and permanent elongation and elastic modulus; this is a different question from measuring only the breaking load.
Start with the belt construction and applicable method. Textile-carcass, steel-cord and light conveyor belts have different test requirements; the linked guides help you select the appropriate route.
Specimen holding
Match the grip to the belt specimen
A full-thickness belt strip and a prepared rubber specimen do not need the same holding arrangement. Include specimen width, thickness, surface and expected load when specifying the grips.
Heavy-duty belt specimens
DAK’s Heavy Duty Hydraulic Grips accommodate specimens up to 200 mm wide and loads up to 200 kN. Their square-housing hydraulic wedge arrangement is designed for heavy-duty belts and geo-fabrics.
Prepared sheet and rubber specimens
Eccentric Roller Grips use a serrated roller and flat back plate for sheet materials, polymers and some rubbers. Choose between the published sizes around the prepared specimen’s width and thickness.
For peel strips, steel cords and fastening specimens, select the holding geometry around the test. Match the load cell to the working forces and choose how extension will be measured over the specimen’s gauge length, allowing for the expected travel and behaviour at break.
Material development
Connect the finished belt to its materials and bonds
Rubber covers and compounds
Relate tensile and tear properties of prepared rubber specimens to the material-development programme. Where cure behaviour or compound processing is also part of the work, explore DAK’s rheology systems alongside the mechanical testing setup.
Bonded linings and rubber-to-metal parts
For wear linings and bonded components used in material handling, define the substrates, bond geometry, conditioning and loading direction. Select a joint test that measures the interface of interest.
Reinforcement and related materials
Follow textile and metal reinforcement into their dedicated material-testing guides. For geotextiles and geogrids used in mine infrastructure, use the construction-material route to connect the specimen to the relevant test.
Laboratory workflow
Make each result useful to the production decision
Keep specimen context with the result
Record the belt designation, carcass or cord construction, cover details, batch or roll identity, sampling position and test direction. Keep conditioning and any ageing treatment with the test record so comparisons refer to the same preparation.
Define the report before the test
Distinguish breaking force, strength normalised to the specified geometry, extension at a reference load, permanent extension and adhesion results. Dyna Desk – Test Bench supports saved methods, graphing and reports with spreadsheet, PDF and CSV exports.
Specify the whole laboratory requirement
Include throughput, specimen changeover, available space, installation location, training and calibration needs. If the belt specification also requires flame, abrasion or other specialised tests, list them separately from the mechanical test programme.
Methods and references
Find the method for your belt or mining material
Use these starting points, then search the complete mining and bulk-handling library by designation, material or test type. The separate conveyor-belt library provides a wider belt-specific view.
Runs onSeries 7200
ASTM D4632 — read the full explanation
TensileGrab breaking load and elongation of geotextiles.
ASTM D6637 — read the full explanation
TensileTensile properties of geogrids by single- or multi-rib method.
ASTM D751 — read the full explanation
TensileCoated fabrics — breaking strength, tear, adhesion of coating, puncture.
DIN 22102 — read the full explanation
Load–deflection & proof loadTextile carcass conveyor belts for bulk materials — grades and mechanical acceptance values (tested per ISO 283 / ISO 252).
DIN 22131
Load–deflection & proof loadSteel cord conveyor belts — dimensions and requirements.
IS 1891
TensileIndian Standard — general-purpose rubber conveyor belts; tensile, elongation and adhesion requirements.
ISO 1120 — read the full explanation
TensileConveyor belts — determination of strength of mechanical fastenings (static test).
ISO 1835
TensileHoisting tackle breaking-load verification (large-capacity frames).
ISO 252 — read the full explanation
Peel & adhesionConveyor belts — adhesion between constitutive elements (ply-to-ply and cover-to-ply, tested as peel on UTM).
ISO 283 — read the full explanation
TensileTextile conveyor belts — full-thickness tensile strength, elongation at break and elongation at reference load.
ISO 340 (flame) — companion
TensileNote: safety/flammability tests are companion tests outside the UTM scope.
ISO 505 — read the full explanation
TearConveyor belts — method for determination of tear propagation resistance of textile belts.
ISO 7622
Peel & adhesionSteel cord belts — cord tensile, cord-to-rubber adhesion and splice strength.
ISO 7623 — read the full explanation
Peel & adhesionSteel cord conveyor belts — cord-to-coating adhesion test (initial and after thermal treatment).
ISO 8094
TensileSteel cord conveyor belts — adhesion strength test of the cover to the core layer.
ISO 813 — read the full explanation
Peel & adhesionAdhesion of rubber to rigid substrate — 90° peel and tension methods.
ISO 9856 — read the full explanation
TensileConveyor belts — determination of elastic and permanent elongation and calculation of elastic modulus (cyclic loading).
Showing 1–8 of 18 standards
Plan your laboratory
Tell us the belt construction and the result you need
Share your testing requirements with DAK so the quotation can cover the machine, specimen holding, measurement and reporting as one setup.
- Belt or material type, reinforcement construction and specimen dimensions.
- Test method, specified results and expected working forces.
- Required elongation range, gauge length and loading sequence.
- Prepared samples, joints or fastening arrangements, including conditioning.
- Test frequency, laboratory location, reporting, installation and support requirements.