Abstract
Selecting rotary bending fatigue equipment relies on test torque, rotating speed, temperature condition, standard compliance and long-term running stability. This 2026 purchasing guide focuses on HSTBF-102C rotary Bending fatigue testing machine, sorting its functional advantages, core parameters, standard configuration and supporting service system, to provide cost-effective test solutions for metal material laboratories, auto parts factories and quality inspection institutions.
Key Takeaways
· Machine matched by maximum rotation speed, bending torque and test temperature demand
· Servo closed-loop loading + high-precision force sensor, force accuracy up to Class 0.5
· Supports normal/high temperature four-point rotary bending test, fully meets GB/T 4337-2015
· PLC touch screen + dedicated test software, automatic data recording, fracture stop & report output
· Optional vortex tube cooling device for high-temperature test scenes
· Global after-sales support lowers equipment downtime risk
Machine Product Positioning
Manufactured by HST GROUP (Jinan Hensgrand Instrument Co., Ltd.) with over 20 years of material test equipment R&D experience, HSTBF-102C is a dedicated four-point rotary bending fatigue tester for metal round specimens, specially developed for metal material fatigue life testing, balancing precision, running stability and procurement cost.
Application & Applicable Standards
Tested Materials
Various metal bar specimens, dumbbell-shaped cylindrical samples per GB/T 4337-2015 clamping standard (Φ8/10/12/14/16mm clamping diameter)
Test Items
Normal temperature rotary bending fatigue test, high-temperature rotary bending fatigue test, four-point bending cyclic fatigue life detection
Compliant Standards
1. GB/T 4337-2015 Metal Materials Fatigue Test Rotating Bending Method
2. GB/T 2611-2007 General Technical Requirements for Testing Machines
Mechanical Structure & Stability Advantages
· Integral thick steel plate frame, linear guide rail sliding follower seat, high overall rigidity
· Double servo loading structure, two groups of electric cylinder force application units, consistent bending moment on specimen
· Active spindle seat driven by servo motor, ER25 high-precision elastic collet fixture, firm clamping without slipping
· Fulcrum force arm fixed at 100mm, structural design eliminates gravity-induced bending moment system error
· Fully enclosed protective cover, safety interlock protection, automatic pause when specimen slips
Core Technical Performance Parameters
· Max rotation speed: 6000r/min, stepless adjustable, speed changeable during operation
· Loading torque: 100Nm; Loading force range: 100N~1000N
· Force resolution: 0.05N, force relative error ≤±0.5%, running force fluctuation ≤±5%
· Drive power: Main rotary motor 945W, dual loading motors 100W each
· Power supply: Single-phase 220VAC, 50Hz
· Host dimension: 8006001260mm
Standard & Optional Configuration
Standard Full Set Configuration
1. Main frame assembly (frame, workbench, protective cover, linear guide)
2. Rotating spindle unit + follower sliding unit
3. Dual bending moment loading assemblies (servo motor, electric cylinder, force sensor)
4. ER25 normal temperature elastic fixture set
5. PLC touch screen electrical control system
6. Special TestPilot test software + brand computer
7. Complete installation tool set
Optional Accessories
1. Vortex tube cooling device (low-temperature air cooling for high-temp test)
2. 4HP matching air compressor
Intelligent Control & Test Software Functions
· PLC closed-loop control, real-time bending moment calculation via fixed force arm
· RS232/485 data communication, lab network data upload supported
· Software core functions: hardware parameter setting, sensor calibration, automatic cyclic test, real-time bending moment-time curve drawing, cycle count recording, one-click test report export & printing
· Automatic shutdown & data storage after specimen fracture
Core Product Features
1. Servo electric loading instead of counterweight hanging, no weight matching error risk
2. Optimized mechanical structure, avoids extra bending moment interference from component gravity
3. High-precision ER collet, stable clamping; auto pause when specimen slips
4. Fully closed safety casing, safe high-speed rotating test
5. Core drive & sensor components adopt brand high-quality parts, long service life
Pre-Delivery User Preparation
1. Power supply: 220V single-phase, total power ≥1kW
2. Supporting computer desk
3. Reserved placement space according to host dimension drawing
Beyond the Product: Critical Buying Factors (2026)
After-Sales Support (Most Important)
· One-year warranty for the machine · Professional online after-sales & remote guidance for installation, operation. · Designed and manufactured exclusively in HST’s own factory
Total Cost of Ownership (TCO)
· Lower maintenance cost · High-efficiency servo drive system saves energy · Imported key parts reduce failure rate · Long service life reduces replacement cost
Certification & Standards
· ISO 9001, CE certified · Comply with GB/T 4337-2015, GB/T 2611-2007 · Suitable for third-party certification and inspection
Making a Decision That Lasts
The HSTBF-102C rotary bending fatigue testing machine is not only a high-precision fatigue test equipment but also a long-term partner for your material research and quality control. It balances performance, stability, cost, and service, making it the best choice for metal rotary bending fatigue testing in 2026.
Whether for material research, production quality control, or project acceptance, the HSTBF-102C delivers professional, stable, and cost-effective solutions for metal fatigue testing.
Frequently Asked Questions (FAQ)
1. Why choose the HSTBF-102C testing machine?
It provides Class 0.5 high precision, dual servo loading system, fully enclosed safety structure, dedicated test software, and global after-sales support. It offers an ideal balance of accuracy, stability, and cost, suitable for both laboratory certification and industrial fatigue testing.
2. Why choose HST GROUP as your supplier?
HST has 20+ years of experience in material testing machines, with ISO 9001 and CE certification. We have a professional R&D and production team. We are not just a supplier, but a long-term partner.
3. What is the warranty period?
The whole machine has a 12-month warranty.
4. How about packaging and transportation?
The machine is packed in standard export plywood cases with moisture-proof and shockproof treatment. We cooperate with reliable freight forwarders to ensure safe transportation by sea, land, or air.
5. Do you provide installation, training and after-sales service?
Yes. We can provide remote video installation guidance and online operation training.
6. Can the machine meet national testing standards?
Yes. The HSTBF-102C fully meets GB/T 4337-2015, GB/T 2611-2007 standards and can be used for third-party testing, factory inspection, and project acceptance.
HST GROUP – Focus on Material Test. Kindly contact HST Group via WhatsApp at +86 15910081986.
