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IMDURA TPBU60 · 4–60 kNCombined servo-hydraulic machine for tyre plunger energy (carcass strength) and bead unseating force measurement — covering PCR, LTR, TBR, and motorcycle tyres in a single test station.
Applicable Standards
IMDURA TPBU60
Combined Plunger Energy & Bead Unseating Tester — Single Machine, Two Critical Tests
The plunger test measures the breaking energy of a tyre carcass by driving a steel plunger into the tread at a controlled rate until rupture. It is mandatory for BIS certification (IS 15633, IS 15636) and international type approval (FMVSS 139, UN ECE R30).
The bead unseating test verifies that a tubeless tyre remains seated on the rim under extreme lateral force. A profiled block is pushed into the sidewall at 50 mm/min — the bead must withstand the minimum specified force without unseating.
The IMDURA TPBU60 combines both tests in a single servo-hydraulic machine with closed-loop ARX440 control, NI-based data acquisition, and TelsSoft PC software — delivering fully automated test execution, real-time force-displacement plotting, and automatic energy calculation. Known internationally as a tire plunger tester or tire bead unseating machine in North American and export markets.
Specifications
| Parameter | IMDURA TPBU60 |
|---|---|
| Plunger Test | |
| Tyre Outer Diameter | 350 – 1100 mm |
| Bead Diameter Range | 12" – 28" |
| Section Width | < 450 mm |
| Plunger Tools (per HS811 797) | 5/16", 1¼", 1½" |
| Flat Plate Attachment | 13" × 18" (330 × 457 mm) |
| Bead Unseating Test | |
| Tyre Outer Diameter | 350 – 1100 mm |
| Bead Diameter Range | 12" – 28" |
| Section Width | < 450 mm |
| Rim Width | 3" – 14" |
| Rim Offset | 30 – 150 mm |
| Unseating Blocks | Block A & B per ISO 10191 |
| Loading System | |
| Maximum Force | 4 – 60 kN |
| Loading Device | Servo-Hydraulic |
| Max Ram Travel | 500 mm |
| Test Speed Range | 10 – 100 mm/min |
| Load Accuracy | ±0.5% FSR |
| Stroke Accuracy | ±0.5% FSR |
| Speed Accuracy | ±0.5% FSR |
| Data Acquisition | |
| Acquisition Rate | 5000 Hz (max) |
| Resolution | 16-bit |
| Switchable Units | N, kN, kg, Bar, lbf |
| Load Cell | High-Accuracy Strain Gauge |
ARX440 floor-standing control desk with integrated computer, NI data acquisition, VFD motor drives, indicators, emergency stop, and machine interlocks. Closed-loop hydraulic servo control for load accuracy.
•Electrical Protection
•Physical Safety
•Fire Protection
Capabilities
Single machine performs both plunger energy (tyre strength) and bead unseating tests — eliminating the need for separate equipment.
ARX440 closed-loop servo control with proportional servo valve delivers precise, repeatable speed and force application throughout each test.
National Instruments DAQ system with 16-bit resolution and 5000 Hz sampling captures high-fidelity force-displacement data for accurate energy calculation.
Multiple plunger diameters (5/16", 1¼", 1½") per HS811 797 plus flat plate attachment for tyre footprint measurement under load.
Factory-supplied Block A and Block B profiles per ISO 10191 for standardised bead unseating force measurement.
PC-based test control and evaluation software with automated sequencing, real-time force-displacement plotting, energy calculation, and statistics.
Test Procedures
Product Range
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After Sales
On-site and in-house calibration of testing machines and sensors
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Application engineering, test method development, and lab planning
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Safe disassembly, transport, and re-commissioning of testing machines
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Modernise legacy or imported test rigs with new controls and sensors
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Annual maintenance contracts (AMC) for all testing machines
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Who Uses Our Machines and Systems?
Share your tyre category, test standard, and rim size requirements — our engineers will configure the right TPBU60 system for your laboratory.
Trade Shows & Exhibitions
Upcoming Events 2026Tire Technology Expo
Deutsche Messe, Hannover, Germany
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TyreXpo Asia Bangkok
BITEC, Bangkok, Thailand
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Automotive Engineering Exposition 2026 Yokohama
PACIFICO Yokohama, Japan
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Automechanika Dubai
Dubai Exhibition Centre, Expo City Dubai
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