Geometry
M4–M26 center-hole and 6–12 mm thickness targets are selection envelopes, not released dimensions. Send available bore, OD and stack height.
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QPF-RNG / Thru-hole washers · compressionQuartz Piezoelectric Force Rings
Place a quartz force ring inside a compact compression load path for stamping, tooling and press monitoring. The center bolt, mating plates and preload form part of the measurement system.
2–400 kN compression requests · Charge or IEPE configuration. Selection envelope; confirm the exact model.
Check force, mounting and signal limits together
Preload
Select the approved preload for the exact ring and desired tensile unloading. Include preload plus dynamic force when checking total compression limits.
Force shunt
The center fastener carries some incremental load. Its stiffness changes the effective installed sensitivity. Calibrate the assembled load path. For IEPE rings, follow the required preload application and bias-recovery procedure before measurement; do not assume an external charge reset is available.
Ready-preloaded option
Consider a QPF-LNK force link when a preloaded assembly better fits the machine. Check its interfaces and load path before installation.
Release the measurement chain with evidence
Request a configuration-specific drawing and calibration record. Confirm rated load, direction, preload, sensitivity, polarity, flat response band, thermal range and overload limits. Discuss the required acceptance test before freezing the order.
Can this measure a static load continuously?
Piezoelectric force measurement decays with system leakage and time constant. Share the cycle and allowed drift; for continuous dead-weight measurement use a suitable static sensing method.
Can I use an existing cable and conditioner?
Yes, if the full chain is verified for the chosen output, sensitivity, current or charge input, signal range, bandwidth, cable construction and connector. QPF accessory choices are optional.
The installation is part of the sensor
Preload, force shunt and installed sensitivity
A center bolt keeps the quartz ring compressed, but also bypasses part of the incremental force. Select preload from the exact sensor and hardware instructions. Around 20% of nominal force appears in some manufacturer guidance; it is not a universal QPF setting.
Check total compression with preload, tensile unloading, contact faces and bolt stiffness. Calibrate the installed assembly. Torque alone is not a direct measurement of preload.
Explore a preloaded QPF-LNK assembly →Read the mounting and bandwidth guide →
Engineering RFQ / QPF-RNGDescribe the event.
Describe the event.
We’ll review the chain.
Include the peak force and pulse duration, your mounting space and existing DAQ. For replacements, add the complete original model and sensitivity.
Request a configuration quote, CAD availability and the calibration documentation you need.
[email protected]No checkout or automatic purchase. Accessory amounts are optional planning references; dimensions, compatibility, price and delivery require confirmation.