Product Overview

Core Product Advantages

1. All Stainless Steel Integrated Frame

   The four guide posts, multi-layer parallel pressing plates, handwheel and transmission screw are all precision machined from anti-rust stainless steel. The parallelism between upper and lower plates is strictly controlled, ensuring uniform stress on each specimen without partial compression deviation; long-term use inside high-temperature ovens will not rust or deform.

    

   2.Handwheel Screw Compression with Built-in Spring Load Mechanism

   Large three-spoke handwheel drives trapezoidal screw to adjust compression height. Built-in standard load spring provides stable constant pressure up to 500kgf, maintaining fixed compression force throughout aging cycles without pressure attenuation. Matching dial indicator with 0–50mm measuring range realizes direct thickness reading without extra gauges.

    

   3.Multi-station Batch Test Design

   Single unit supports simultaneous loading of 3 to 27 standard specimens, greatly improving laboratory batch testing efficiency. Two standard clamping areas are reserved for foam and solid rubber separately, switching without extra accessories.

    

   4.Dual Standard Specimen Compatibility

   Suitable for two sets of standard test pieces required by ISO standards:

• Method 1: Foam Φ29.0mm / Solid rubber Φ14.5mm
• Method 2: Foam 25.4×25.4mm / Solid rubber Φ12.7mmMatched 9.52mm limit thickness block is equipped for standard compression ratio adjustment.

5. Compact Desktop Layout & Easy OperationVertical circular layout occupies minimal bench space (Φ230×H650mm, net weight only 40kg). Manual operation without electricity or air source; new operators can finish specimen clamping and compression adjustment within 3 minutes, low daily maintenance workload.

Standard Test Operation Steps

1. Specimen Pre-ConditioningCut raw materials into standard-size blanks, place under 23℃ standard lab environment for sufficient conditioning to eliminate internal stress, and record original specimen thickness H0.
2. Specimen Clamping & Compression AdjustmentPlace test pieces between upper and lower parallel plates, turn the handwheel clockwise to lower the pressing plate until the built-in spring reaches the preset load height, lock the screw position.
3. High-Temperature Aging TreatmentPut the whole fixture with compressed specimens into blast drying oven, hold for specified hours under designated test temperature according to material standards.
4. Cooling & Thickness MeasurementTake out the fixture after aging cycle, release compression and take out specimens, leave them at room temperature for 30 minutes for free elastic recovery. Read recovered thickness H2 via the dial gauge.
5. Compression Resilience CalculationSubstitute thickness data into standard formula to compute compression set rate, take average value of parallel specimens as final test result.

Applicable Test Materials & Industrial Scenarios

Solid Vulcanized Rubber

Flexible Foam Materials

R&D & Quality Inspection Scenarios

Compliant International Test Standards

1. SATRA-PM64 Footwear Material Test Specification
2. FIA304 Rubber Elasticity Testing Norm
3. ISO 815-2 Compression Set Determination Standard

Standard Delivery Package

1. KR-108A circular plate compression resilience tester main unit
2. Built-in load spring assembly + 0–50mm precision dial indicator
3. Full set of standard thickness limit blocks (9.52mm)
4. Multi-layer parallel stainless pressing plates & four guide columns
5. Large handwheel trapezoidal screw transmission set
6. Multilingual operation manual matching ISO test standards

Global Technical Support & Customization Service