STW20 Spoke Type Hollow Load Cell

The STW20 Ring Hollow Load Cell features a spoke-type or diaphragm cross-section structure with a compact design, high accuracy, and strong off-center load resistance. Its center hollow bore or threaded mounting structure allows direct connection to screw rods or force-bearing shafts, making it ideal for installations with limited space. Widely used in industrial automation equipment, force testing systems, pressure control devices, assembly machinery, and mechanical force monitoring applications, the STW20 provides reliable and stable force measurement performance. It supports multiple output options including mV, 4-20mA, 0-10V, Modbus-485 RTU, and CANOPEN. With measurement ranges from 0~10KN to 0~80KN, the sensor is suitable for various industrial force measurement and control applications. The STW20 also offers excellent dynamic response capability for systems operating below 1000Hz frequency.

1. Key Features

High Accuracy Measurement
Various output signal options available
High strength, fast response
Compact hollow structure with small installation space requirement
Spoke-type structure with strong off-center load resistance and stable measurement

2. Technical Specifications

General Electrical Data

Measuring Range	0–10 kN, 0–20 kN, 0–40 kN, 0–60 kN, 0–80 kN
Sensitivity	1.5mV/V
Output Signal	mV/V (default), 4–20mA, 0–5V, 1–5V, 0–10V, 0.5–4.5V, RS485 Modbus RTU, CANopen, PNP, NPN
Bridge Excitation Voltage	5–12VDC(Recommended: 10 VDC)

Performance Specifications

Accuracy	±0.5%F.S.
Creep Error
Zero Output	±0.05% of Full Scale (F.S.)
Zero Temperature Effect	±0.05%F.S/10°C
Output Temperature Effect	±0.05%F.S/10°C
Safe Overload	150%F.S
Operating Temperature Range	-20°C to +65°C

3. Applications

Industrial Automation Equipment
Robotics & Mechanical Systems
Material Testing Systems
Tension testing and force measurement equipment
Other industrial applications

4. Selection Guide

Pressure Sensor Selection Key Points: Confirm the measuring range, match the output signal, ensure media compatibility, select the appropriate mounting interface, and define the accuracy requirements.

5. FAQ (Frequently Asked Questions)

Q1: What are the structural advantages of the STW20 Ring Hollow Load Cell?

It uses a spoke-type or diaphragm hollow structure, offering strong off-center load resistance, compact design, and high stability for complex industrial environments.

Q2: What is the measuring range of the STW20 Ring Hollow Load Cell?

It covers a range from 0–10KN to 0–80KN, allowing selection based on different industrial application requirements.

Q3: Is the STW20 Ring Hollow Load Cell suitable for dynamic measurement applications?

Yes, it has strong dynamic response capability and is suitable for force measurement and control systems with frequencies below 1000Hz.

Q4: What is the accuracy of the STW20 Ring Hollow Load Cell?

The sensor offers a comprehensive accuracy of up to 0.5% F.S., with good linearity and repeatability, suitable for high-precision industrial control systems.

Q5: Is the STW20 Ring Hollow Load Cell flexible for installation?

Yes, it features a central through-hole or threaded design, allowing direct connection to screw rods or force-bearing shafts, making installation highly flexible for compact equipment.

Q6: What output signals does the STW20 Ring Hollow Load Cell support?

It supports multiple industrial output signals including mV, 4–20mA, 0–10V, 1–5V, 0–5V, 0.5–4.5V, as well as Modbus-485 RTU, CANOPEN, PNP, and NPN, offering strong system compatibility.

Q7: What industrial applications are suitable for the STW20 Ring Hollow Load Cell?

The STW20 Ring Hollow Load Cell is widely used in industrial automation force measurement, tension and compression testing, press-fit control systems, robotics, and material testing platforms, especially where compact installation and high precision are required.

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