A rubber compound's curing behavior determines whether a batch becomes a usable part or scrap. The Moving Die Rheometer measures that behavior directly: a sealed specimen is heated under pressure while the lower die oscillates sinusoidally, and a torque sensor on the upper die records the compound's response. The resulting cure curve reveals scorch time, optimum cure time, cure rate, and reversion characteristics. This Moving Die Rheometer is built for rubber compounders, tire and seal manufacturers, and materials research laboratories that need ISO 6502 and ASTM D5289 data from a rotorless, sealed-die platform.

Technical Specifications

The Moving Die Rheometer is supplied as a single model, GT-KR02, with the sealed die assembly, servo motor drive, PID temperature control, and RS232 communication configured as a complete benchtop test station.

GT-KR02 Core Configuration

• Model/Part Number: GT-KR02

• Applicable Standards: ISO 6502-3-2018, ASTM D5289-2017, GB/T 16584-1996

• Die Configuration: Sealed die

• Temperature Control: Computer operation, PID.SSR control

• Temperature Range: RT+10°C to 200°C

• Temperature Display Resolution: 0.1°C

• Temperature Accuracy: ±0.3°C

• Temperature Recovery Time: ≤45 seconds

• Heating Time: Ambient to 190°C in under 6 minutes

• Torque Range: Elasticity S': 1 to 200 lb-in

• Torque Resolution: 0.01

• Torque Units: dN-m, kgf-cm, lbf-in

• Oscillation Amplitude: ±0.5°, ±1°, ±2°, ±3° (select one, default ±0.5°)

• Oscillation Frequency: 100 CPM (1.67 Hz ± 0.01 Hz)

• Testing Time: 0.1 seconds to 99 hours

• Motor: Servo Motor

• Communication Interface: RS232

• Compressed Air Requirement: 4 kg/cm² (0.4 MPa), customer-supplied

• Power Supply: 1-phase AC 220V, 50/60Hz, 800W

• Weight: Approximately 200 kg

Standard Accessories Included

• Moving Die Rheometer main unit

• Sealed die assembly

• Servo motor drive system

• PID/SSR temperature controller

• RS232 communication cable

• Operation software

• Operation manual

Items Excluded

• Compressed air supply (customer-prepared, 0.4 MPa)

• Calibration certificate (available upon request)

• Extended warranty (available for purchase)

• On-site installation and commissioning (available as a service)

• Test compounds (prepared by the user)

Pre-installation Requirements

• Stable, level floor or bench with load-bearing capacity for the approximately 200 kg unit

• Dedicated 1-phase AC 220V, 50/60Hz power supply

• Compressed air supply at 4 kg/cm² (0.4 MPa) with appropriate regulator and hose

• Computer with RS232 port for software operation and data logging

• Ambient laboratory conditions free from strong vibration and temperature fluctuation

• Operator training on rheometer operation and rubber compound handling is recommended

Key Benefits: Reliable Cure Curves Without Rotor Interference

Rotorless Sealed Die Design Eliminates Rotor Mass Effects

The Moving Die Rheometer uses a sealed die with no rotor. In rotor-based rheometers, the rotor's thermal mass and mechanical drag influence the torque reading. The GT-KR02 oscillates the lower die directly, and the upper die sensor measures only the specimen's response. The cure curve reflects the compound, not the instrument's moving parts.

Temperature Accuracy of ±0.3°C for Reproducible Cure Kinetics

Cure reactions are temperature-sensitive. A drift of a few tenths of a degree shifts scorch time and optimum cure time. The GT-KR02 holds ±0.3°C accuracy with 0.1°C display resolution, and recovers to setpoint within 45 seconds after die opening. Each test starts from the same thermal condition.

Fast Heating for High-Throughput Testing

The chamber heats from ambient to 190°C in under 6 minutes. For labs running multiple compounds per shift, the reduced heat-up time means more tests per day without waiting for the die to stabilize between runs.

Servo Motor Drive for Consistent Oscillation

The oscillation frequency holds 100 CPM (1.67 Hz ± 0.01 Hz) under servo motor control. Amplitude is selectable at ±0.5°, ±1°, ±2°, or ±3°. The drive maintains the selected strain throughout the test, so the torque response reflects the compound's viscoelastic behavior rather than motor variation.

To explore how this Moving Die Rheometer fits into your rubber testing workflow, visit our website at Optimum Solution to compare related rubber cure and viscoelastic testing instruments. For detailed product specifications and application notes, you can view the GESTER moving die rheometer product page on the manufacturer's site. For information on rubber cure testing standards, refer to the ISO 6502 standard or the ASTM D5289 specification.

Solving the Problems That Slow Rubber Compound Qualification Down

Struggling to get reproducible cure curves between batches?
The sealed die and ±0.3°C temperature accuracy remove two common sources of variation. The servo-driven oscillation holds frequency and amplitude, so the torque signal reflects the compound rather than the instrument.

Concerned that rotor-based rheometers introduce measurement artifacts?
The rotorless design eliminates rotor mass and drag from the torque reading. The upper die sensor measures only the specimen's response to the lower die oscillation.

Tired of waiting for the die to heat up between tests?
The chamber reaches 190°C from ambient in under 6 minutes, and recovers to setpoint within 45 seconds after opening. Compound changeovers take less time, and throughput improves.

Need cure data that maps to ISO 6502 or ASTM D5289 review?
Temperature accuracy, oscillation frequency, and torque range follow the standard requirements. The RS232 interface exports test data for records, and the cure curve parameters are calculated from the measured torque.

Warranty and Support

We provide a 1-year manufacturer's warranty covering parts and labor. Technical support, installation assistance, and operational training are also available. Replacement parts and consumables are available throughout the product's service life.

Call to Action

Request a Quotation or Technical Datasheet: Contact us for more information, customized configurations, and solutions tailored to your specific requirements.