Overview
ISO/TS 17104:2006 - "Rotary tool for threaded fasteners - Hydraulic impulse tools - Performance test method" specifies a laboratory performance test method for hydraulic impulse tools used to install threaded fasteners. The Technical Specification sets out the test procedure, the performance parameters to measure, methods for calibrating test joints, and how to evaluate and present the resulting data. It is intended for controlled laboratory comparison and validation - not as a routine in‑plant inspection method.
Key topics and technical requirements
- Scope and purpose: laboratory measurement of overall performance and capability of hydraulic impulse tools; justification in Annex A.
- Defined terms & metrics: hydraulic impulse tool, automatic shut‑off / non shut‑off tools, torque (dynamic, peak), correlated torque, torque coefficient (K), clamp force (peak/target), 6s correlated torque scatter, mean correlated torque, combined correlated torque scatter, pulse count, tightening time.
- Test setup and instrumentation:
- Calibration of test joints using an in‑line rotary torque and angle transducer to measure dynamic torque.
- Controlled ambient conditions per ISO 2787; lubrication and tool condition per manufacturer instructions.
- Example test installation components: pressure regulator, filter, lubricator, glycerine‑filled pressure gauge, clamp force measuring device with peak‑hold and display.
- Tool mounting and alignment on a test stand; axial load limited to a maximum of two times the tool weight.
- Performance data & evaluation:
- Procedures to calculate torque coefficient K, mean correlated torque, 6s scatter and combined scatter, and mean shift between joints of different torque rates.
- Guidance that correlated torque scatter reproducibility is limited; differences under ~10 percentage points should be treated cautiously until verified by purchasers.
- Annexes: technical justification (A), clamp force tester details (B), K dependence on speed (C), example test form (D).
Applications
- Comparative laboratory testing of hydraulic impulse tools for R&D, product development and validation.
- Supplier or procurement evaluation to compare torque capability, pulse count and tightening time.
- Quality engineering and test laboratories validating tool performance under controlled conditions.
- Not intended for shop floor routine inspection - use for controlled, repeatable measurement and specification verification.
Who should use it
- Tool manufacturers and designers
- Independent test laboratories and certification bodies
- OEM assembly and quality engineers
- Purchasing teams evaluating tool performance
Related standards
- ISO 2787 - atmospheric/ambient condition limits and pneumatic tool test guidance
- ISO 5393 - rotary tools for threaded fasteners - performance test method
Keywords: ISO/TS 17104:2006, hydraulic impulse tools, performance test method, torque coefficient, correlated torque scatter, clamp force, test joint, pulse count, tightening time.