ATSFAAR SCHOB Impact Resistance Pendulum Tester Model 29/53
| Brand | ATSFAAR |
|---|---|
| Origin | Italy |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 29/53 |
| Pricing | Upon Request |
Overview
The ATSFAAR SCHOB Impact Resistance Pendulum Tester Model 29/53 is a precision-engineered instrument designed for the quantitative evaluation of impact resistance in vulcanized rubber and thermoplastic elastomers. It operates on the classical pendulum impact principle—where a calibrated hammer mounted on a rigid arm swings from a defined height to strike a standardized specimen clamped in a fixed anvil. The energy absorbed during fracture or deformation is derived from the difference between initial potential energy and residual kinetic energy, measured via high-resolution angular displacement transduction. This method aligns with the fundamental mechanics of Charpy-type impact testing adapted specifically for soft, viscoelastic polymeric materials. Unlike metal impact testers, the SCHOB system incorporates low-inertia pendulum geometry, optimized impact velocity (typically 2.5–3.0 m/s), and compliant fixture design to ensure reproducible stress wave propagation through rubbery specimens without premature edge failure or slippage.
Key Features
- Compliant with ISO 4622:2018 and DIN 53512:2017—international standards governing the determination of rebound resilience and impact resistance of vulcanized rubber and thermoplastic elastomers.
- Dual-specimen diameter capability: accommodates cylindrical test pieces with nominal diameters of 29 mm and 53 mm, enabling comparative analysis across material thickness and cross-sectional geometry.
- Integrated electronic impact detection system utilizing optical encoder-based angular position sensing, delivering sub-degree resolution for precise energy calculation (±0.5% full-scale repeatability under controlled lab conditions).
- Robust cast-iron base and vibration-damped support frame minimize environmental interference and ensure mechanical stability during repetitive testing cycles.
- Adjustable pendulum release mechanism with electromagnetic latch ensures consistent initial swing angle (typically 120° ± 0.2°) and eliminates operator-induced variability.
- Modular anvil assembly with interchangeable inserts allows rapid reconfiguration for 29 mm or 53 mm specimen holders, each conforming to dimensional tolerances specified in Annex A of ISO 4622.
Sample Compatibility & Compliance
The SCHOB Model 29/53 accepts cylindrical specimens prepared per ISO 4622 requirements: vulcanized rubber compounds cured under standard laboratory conditions (e.g., ASTM D5332, ISO 34-1), with surface finish meeting Ra ≤ 3.2 µm and axial parallelism within 0.1 mm over length. Specimens must be free of voids, blisters, or surface contaminants that could initiate non-representative crack propagation. Testing is performed at standard ambient temperature (23 ± 2 °C) and relative humidity (50 ± 5 % RH), as mandated by ISO 23529 for physical testing of rubber. Data generated satisfies traceability requirements for ISO/IEC 17025-accredited laboratories and supports GLP-compliant reporting when paired with validated software workflows.
Software & Data Management
While the base unit operates as a stand-alone electromechanical tester, optional PC connectivity enables integration with ATSFAAR’s proprietary ImpactTest Suite v3.x. This Windows-based application provides real-time pendulum trajectory visualization, automated energy calculation per ISO 4622 Annex B, statistical batch reporting (mean, SD, CV%), and export to CSV, PDF, or XML formats compatible with LIMS environments. Audit trail functionality complies with FDA 21 CFR Part 11 requirements—including user authentication, electronic signatures, and immutable record retention—making it suitable for regulated quality control labs supporting automotive, medical device, or aerospace rubber component validation.
Applications
- Quality assurance of elastomeric seals, gaskets, and vibration dampers in automotive OEM supply chains.
- R&D screening of novel rubber formulations (e.g., silica-filled SSBR, bio-based EPDM) for impact resilience optimization.
- Comparative assessment of aging effects—thermal, UV, or ozone exposure—on impact absorption capacity.
- Validation of process parameters (cure time, temperature, press pressure) against target resilience specifications.
- Supporting technical documentation for ISO/TS 16949 and IATF 16949 compliance in Tier-1 supplier audits.
FAQ
What standards does the SCHOB Model 29/53 explicitly comply with?
ISO 4622:2018 and DIN 53512:2017 are fully supported through mechanical design, specimen fixture geometry, and energy calibration protocols.
Can the instrument test specimens outside the 29 mm and 53 mm diameters?
No—the anvil and pendulum impact geometry are certified only for these two standardized diameters; deviation compromises measurement validity per ISO 4622.
Is calibration certification included with shipment?
Each unit ships with a factory-issued calibration certificate traceable to NIST-equivalent national metrology institutes (INRIM, Italy), covering pendulum moment of inertia and angular encoder linearity.
Does the system require external power for basic operation?
Yes—a 230 V AC, 50 Hz supply powers the electromagnetic release, optical encoder, and digital display; manual operation without electronics is not supported.
How often should periodic verification be performed?
ATSFAAR recommends verification every 6 months using certified reference specimens, or after any mechanical maintenance affecting pendulum alignment or anvil flatness.
