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FH-JS7303
Feihong
8–12km/h belt speed. 30 vertical impacts per minute. 75kg load. The running impact test the FH-JXJ01 walking test doesn't cover.
The FH-JS7303 drives the treadmill's own belt at running speed (8–12km/h) while a tire assembly on the belt simultaneously performs controlled vertical reciprocating impacts at 30 times/min under a 75kg test load — applying the high-frequency dynamic impact forces of running to the belt, deck, and drive train at a speed and cadence that a walking-speed test never reaches. Adjustable counterweights vary the impact load; touchscreen controls set parameters and monitor status. The result: a dedicated running-speed impact durability test that reveals the fatigue characteristics of treadmill components under the highest-stress real-world use condition.
Quick Specs
Drive speed: 8–12km/h (running speed range)
Impact frequency: 30 impacts/min
Test load: 75kg
Adjustable counterweights for variable impact force
Display: Touchscreen
Power: 1-phase AC 380V, 5A (or per country specification)
Test bench: 1760 × 1360 × 2200mm (L×W×H)
Control box: 370 × 350 × 910mm (L×W×H)
Weight: ~280kg
Walking vs. Running: Why Treadmills Need Both Impact Tests
Overview of the FH-JS7303 Test Machine
Standards and Regulatory Context
Test Method: Belt-Driven Tire with Vertical Reciprocating Impact
Design Features of the FH-JS7303
Technical Specifications
How the FH-JS7303 Testing Process Works
Benefits for Treadmill Manufacturers and Testing Labs
FH-JS7303 vs. FH-JXJ01: Choosing the Right Machine for Your Test Program
Real-World Application Scenarios
FAQs for the FH-JS7303
Related Testing Equipment
Get a Quote from Feihong Machine
A treadmill's mechanical stress environment changes fundamentally between walking and running. At 5km/h walking speed, each footstrike is a controlled load transfer — the foot contacts the belt, the weight shifts, the foot lifts. At 10km/h running speed, the mechanics change completely: the runner's foot strikes the belt with a peak impact force of 2–3× body weight concentrated in a short contact window, the belt deflects more sharply into the deck, the deck absorbs a higher peak stress, and the drive motor must recover its speed through a larger belt drag pulse. The belt also moves faster under the contact, so the contact patch travels further across the belt surface per stride — distributing wear differently than walking.
These two loading modes produce different fatigue patterns in the treadmill's components:
Running impact creates higher peak belt deflection and deck surface stress — revealing delamination, cracking, and hinge failure in the deck that walking loads do not stress enough to expose
Running impact creates sharper motor speed drops per stride — cycling the motor control system's speed recovery algorithm more aggressively and revealing control board instability or motor drive inefficiency that only appears under high-frequency load variation
Running impact creates higher peak belt tension per contact — accelerating belt splice, tracking, and edge wear in ways qualitatively different from walking wear patterns
A treadmill that passes a 500-hour walking-speed mechanical foot test has demonstrated walking durability. It has not demonstrated running durability. For products marketed to runners — or for products that carry a maximum user weight rating at running speed — running-speed impact testing is a necessary second test, not an alternative to the walking test.
The FH-JS7303 addresses the running-speed impact test: 8–12km/h belt speed, 30 vertical impacts per minute, 75kg load, variable counterweights — the parameters that load the treadmill's belt, deck, motor, and drive train in the pattern characteristic of running use.
The FH-JS7303 uses the treadmill's own belt as the driving surface. A tire assembly is placed on the moving treadmill belt; as the belt moves at 8–12km/h, the tire rolls on the belt surface. A vertical reciprocating mechanism simultaneously drives the tire up and down at 30 impacts per minute under a 75kg test load — the tire periodically contacts the belt with a downward force, lifting off, and coming back down, at the set frequency.
This test architecture has a key advantage: the treadmill's actual belt is the impact surface, so the machine tests the treadmill's complete mechanical and electrical response to impact loading — including the motor's speed recovery, the belt's dynamic tension variation, the deck's flexion under impact, and the drive train's torque pulse absorption — under controlled, repeatable conditions.
Counterweights can be added or removed to vary the impact force above or below the baseline 75kg test load, allowing both standard-load testing (per EN 957-6 / ISO 20957-4 requirements) and accelerated-force testing (where higher load shortens the time to failure for accelerated life predictions).
EN 957-6 specifies both walking-speed and running-speed endurance test requirements for treadmills. The FH-JS7303 addresses the running-speed impact conditions at the force and cadence representative of the EN 957-6 running test mode. For CE marking technical file completeness, both walking-speed (FH-JXJ01 applicable) and running-speed (FH-JS7303 applicable) endurance test evidence may be required depending on the product's declared use category.
ISO 20957-4 covers treadmill durability and structural requirements including running-speed mechanical impact tests. The FH-JS7303's 8–12km/h speed range and 30 impacts/min frequency are consistent with the running-mode test parameters in ISO 20957-4.
ASTM F1749 includes treadmill performance and durability requirements for the North American market. Running-speed impact endurance is within the scope of ASTM F1749 durability provisions. The machine's single-phase power input (specified AC 380V, 5A, or per country) accommodates regional electrical specification variation.
Standard | Market | Running-Speed Impact Relevance |
|---|---|---|
EN 957-6 | EU (CE marking) | Running-mode endurance test |
ISO 20957-4 | International | Treadmill running durability |
ASTM F1749 | USA / North America | Treadmill performance and safety |
The tire-on-belt test architecture is used because it applies impact through a contact element with realistic rolling contact mechanics. A treadmill belt in running use is not impacted by a flat rigid platen — it is impacted by a curved, slightly compressible foot contact. A tire approximates this curved contact geometry and provides a controlled, consistent contact patch that produces repeatable impact loading without the variability of a human foot or the geometric distortion of a flat rigid impactor.
The tire rolling on the belt also allows the machine to test at different angular positions of the vertical reciprocating mechanism per belt revolution — producing impacts distributed across the belt width and length rather than concentrated at a single point, which is more representative of real use.
The tire is mounted on a vertically-guided carriage that is driven up and down at 30 impacts per minute (0.5Hz) by the reciprocating mechanism, regardless of belt speed. The 75kg test load sits on the carriage — when the carriage descends, the tire contacts the belt with 75kg (plus any additional counterweights) and transmits the impact force into the belt, deck, and subframe. When the carriage ascends, the tire lifts off the belt, allowing the belt to recover its tension and the deck to spring back before the next impact.
At 30 impacts per minute and 10km/h belt speed, each impact covers a belt travel distance of approximately 0.33m between contacts — comparable to a running stride length at moderate pace. The 8–12km/h speed range brackets the most common residential and light-commercial treadmill running speed envelope (slower than competitive running, faster than fitness walking), which is where real users accumulate the majority of their running belt-hours.
The 75kg base test load matches the test load specifications in EN 957-6 and ISO 20957-4 for the running-mode impact test. Additional counterweights can be added to the carriage to increase the impact force above 75kg for accelerated testing or for products with higher rated user weights where a 75kg test would under-represent the real-use loading.
By using the treadmill's own belt as the driving surface rather than a separate drive roller, the FH-JS7303 tests the complete treadmill system — not just the structural components in isolation. Every impact event causes:
A momentary increase in belt drag
A speed drop that the motor control algorithm must recover from
A tension pulse that propagates through the belt and loads the belt splice
A stress peak in the deck at the contact patch
A reaction force in the frame and subframe
All of these system-level responses are tested simultaneously — which is why running-speed impact testing reveals failure modes that structural static tests and isolated component tests miss.
The touchscreen interface provides parameter setting (speed, test duration, impact count limits), real-time monitoring (belt speed, impact count, elapsed time), and alarm display in a compact, operator-friendly format. Parameters are set before the test begins; the machine runs automatically to the programmed count or time limit.
The belt drive speed is adjustable within the 8–12km/h range — allowing the test to be configured for products with different rated running speeds. Manufacturers who specify their products' maximum running speed at 10km/h can test at that exact speed; products rated to 12km/h can be tested at their full rated condition.
The base 75kg load is the standard test weight for EN 957-6 running impact tests. By adding or removing counterweights from the impact carriage, the operator can:
Run at the standard 75kg for compliance testing
Run at higher loads (e.g., 90–100kg) for accelerated life testing or for products with higher maximum user weight ratings
Run at lower loads for preliminary screening of prototype designs at reduced stress before committing to full-load testing
The machine is specified for single-phase AC 380V / 5A input, with the option to configure for country-specific voltages as required. This accommodates production facilities and test labs in different markets without requiring separate transformer infrastructure.
Specification | Details |
|---|---|
Drive (belt) speed | 8–12km/h |
Impact frequency | 30 times/min (0.5Hz) |
Test load (base) | 75kg |
Impact load adjustment | Counterweights (addable/removable) |
Impact mechanism | Vertically-guided tire on treadmill belt |
Specification | Details |
|---|---|
Display and control | Touchscreen |
Specification | Details |
|---|---|
Test bench (L×W×H) | 1760 × 1360 × 2200mm |
Control box (L×W×H) | 370 × 350 × 910mm |
Machine weight | ~280kg |
Power supply | 1-phase AC 380V, 5A (or per country specification) |
8–12km/h is the residential and light-commercial running speed envelope — the speed range where real users accumulate the majority of their running time on home and light-commercial treadmills. Testing at this speed range means the fatigue loading during the test matches the loading pattern of actual use, giving representative durability data rather than a conservative under-test (too slow) or an unrealistic over-test (sprinting speed).
30 impacts/min at 0.5Hz is a frequency that allows the treadmill's mechanical and electrical systems to fully recover between impact events — belt tension re-equilibrates, motor speed recovers, deck springs back — so each impact is applied to a system in its normal running state rather than in a progressively degraded mid-recovery state. This matches the intermittent footstrike pattern of real running rather than the continuous contact of a rolling load.
75kg base test load matches EN 957-6 and ISO 20957-4 running mode test load specifications — the standard value for adult-use treadmill impact testing. The counterweight system allows this to be adjusted upward for products rated above 75kg maximum user weight.
The treadmill under test is positioned on the FH-JS7303 test bench platform. The tire carriage assembly is positioned on the treadmill belt. The treadmill is started at the target test speed (8–12km/h); the touchscreen displays the actual belt speed.
The counterweight stack on the impact carriage is set to the required test load (75kg standard, or adjusted per the specific test requirement). Total load is verified before the test begins.
The vertical reciprocating mechanism is activated at 30 impacts/min. The tire begins its up-down cycle — descending to belt contact with the full carriage load, ascending to clear the belt, and repeating at 30 cycles per minute.
The test runs automatically with the belt speed maintained by the treadmill's own motor control and the impact frequency maintained by the FH-JS7303's reciprocating mechanism. The touchscreen displays real-time impact count, elapsed time, and belt speed throughout the run.
The machine runs to the programmed count or time limit, or is stopped when a problem is observed on the treadmill. The treadmill is then inspected for:
Belt surface wear, edge delamination, splice fatigue
Running deck surface wear, cracking, or lubrication failure
Drive roller and bearing condition
Structural changes in frame and deck support
Motor and drive electronics function check
Any abnormal noise, vibration, or belt tracking deviation noted during the test
The fundamental value of the FH-JS7303 is testing the treadmill failure modes that only manifest under running-speed impact loading:
Belt edge delamination from high-speed belt flex cycles at speed
Deck surface stress cracking from higher peak contact force at running speed
Motor control instability from 30/min speed recovery cycles at running load
Drive train fatigue from the higher torque pulses at running speed contact
A product that passes the FH-JXJ01 walking test but not the FH-JS7303 running test is a product that fails in the hands of running users — the most demanding, highest-value, and most complaint-prone segment of the treadmill user market.
The counterweight system's ability to add load above 75kg enables accelerated life testing — running the treadmill at 100kg or 120kg impact force to shorten the time to failure and reveal the failure mechanism faster than testing at the rated 75kg load. This is particularly useful during product development, where rapid iteration requires fast turnaround of durability data.
At 280kg and 1760×1360×2200mm, the FH-JS7303 is a compact machine that fits in a standard lab bay or production QC area. Its single-phase power input (with country-specific voltage option) requires minimal electrical infrastructure.
Feihong Machine offers two complementary treadmill durability test machines. Understanding their differences clarifies when each applies:
Parameter | FH-JXJ01 (Mechanical Foot) | FH-JS7303 (Dynamic Impact) |
|---|---|---|
Simulated activity | Walking | Running / impact |
Belt speed | 3–6km/h | 8–12km/h |
Impact frequency | Walking cadence | 30/min (0.5Hz) |
Load range | 90–175kg (adjustable) | 75kg base + counterweights |
Power supply for treadmill | Programmable AC (1–300V / 45–75Hz / 1–22A) | Treadmill uses its own power supply |
Temperature monitoring | 4 channels, 0–300°C with alarms | Not included |
Electrical monitoring | Treadmill voltage, current, machine voltage, current | Not included |
Primary standard | EN 957-6 walking mode | EN 957-6 running mode |
Best used for | Walking durability, motor thermal, electrical QC | Running impact durability, belt/deck wear at speed |
When to use the FH-JXJ01: Products targeting walking use; comprehensive electrical and thermal monitoring needed; multi-voltage market testing; high-load capacity (up to 175kg) required.
When to use the FH-JS7303: Products marketed to runners; running-speed belt and deck impact durability is the specific test requirement; accelerated impact testing with variable counterweight.
When to use both: Complete treadmill durability qualification — the FH-JXJ01 addresses walking durability with full electrical/thermal monitoring, and the FH-JS7303 addresses running-speed impact durability. Together they cover the full EN 957-6 / ISO 20957-4 treadmill endurance test matrix.
A home treadmill manufacturer launching a new "runner's treadmill" positioned at 10km/h maximum running speed ran FH-JS7303 impact tests at 10km/h / 75kg / 30 impacts/min. After 200 hours, the running deck showed localized delamination at a section where the deck board adhesive joint fell below the impact zone — a failure mode that had not appeared in 500 hours of FH-JXJ01 walking tests at the same load because the lower belt speed and gentler contact load of walking never produced the peak stress needed to propagate the adhesive weakness. The deck board adhesive specification was upgraded.
A commercial gym equipment manufacturer testing a heavy-duty treadmill rated to 150kg maximum user weight used the FH-JS7303 with additional counterweights to run at 120kg impact force — above the 75kg standard test load but below the 150kg rating — as an accelerated life screening test during development. Belt splice failure at 120kg impact occurred at approximately 350 hours equivalent — pointing to a need for a heavier splice reinforcement in the belt specification before the product went to market.
The FH-JXJ01 simulates walking at 3–6km/h with a linkage mechanism foot, monitoring electrical and thermal parameters of the treadmill throughout. The FH-JS7303 drives the treadmill's belt at running speed (8–12km/h) while a tire performs vertical impact at 30/min under 75kg load — testing running-mode impact fatigue of the belt, deck, and drive system. The two machines address different EN 957-6 test modes and are complementary.
A tire approximates the curved, slightly-compliant contact geometry of a human foot on a treadmill belt, producing a more representative contact patch geometry and impact load distribution than a flat rigid impactor. The rolling contact also distributes impact events across the belt surface rather than repeatedly loading a single point.
Yes. Counterweights can be added to the impact carriage above the 75kg base load — allowing testing at higher forces for products with higher maximum user weight ratings, or for accelerated life testing where higher load shortens the time to failure for faster development iteration.
30 impacts per minute (0.5Hz) allows the treadmill's mechanical and electrical systems to recover between impacts — belt tension re-equilibrates, motor speed recovers — so each impact is applied to a system in its normal running state. This matches the intermittent contact pattern of real running rather than a continuous rolling load.
The belt drives the tire at 8–12km/h, adjustable to the desired test speed. For products with a specified maximum running speed, the test is typically run at or near that speed. The 8–12km/h range covers the common residential and light-commercial treadmill running envelope.
Competitive performance treadmills rated to 16–22km/h maximum speed operate above the FH-JS7303's drive speed range. For such products, contact Feihong to discuss a custom speed configuration.
Treadmill Mechanical Foot Durability Test Machine (FH-JXJ01) — walking-speed (3–6km/h) endurance testing with 90–175kg load, 4-channel temperature monitoring, and programmable AC power supply for treadmill electrical monitoring; the complementary machine to the FH-JS7303 for complete EN 957-6 treadmill durability qualification
Treadmill Frame Static Load Test Fixture — static structural load testing for deck, handrail, and frame per EN 957-6 static strength requirements
Belt Elongation and Wear Measurement Equipment — pre/post test belt dimensional and surface inspection
Motor Insulation and Winding Resistance Tester — electrical integrity verification of treadmill motor before and after durability testing
Vibration and Noise Measurement System — treadmill running noise and vibration level assessment before and after impact testing
Feihong Machine (Dongguan Feihong Instrument and Equipment Co., Ltd.) designs and manufactures treadmill and fitness equipment durability testing machines for manufacturers and testing laboratories worldwide.
To get started:
Request a Quote — share your treadmill's rated running speed, maximum user weight, and target test standard
Request Technical Datasheet — full mechanical drawings and impact mechanism specification
Schedule a Demo — see the FH-JS7303 run a live running-speed impact durability test alongside the FH-JXJ01 walking-speed test to understand how the two machines complement each other
