Shock Tester Experiment: How Caster Wheels Withstand Real-World Impact
1. Introduction – Why Impact Resistance Matters
In real-world applications, durability equals safety, service life, and lower replacement costs. A caster that survives repeated impact keeps equipment stable, operators safe, and warranty claims under control. For OEMs, documented impact resistance is the basis of long-term trust.
- ★ Safety: fewer failures during sudden shocks
- ★ Lifespan: slower material fatigue over time
- ★ Cost: reduced maintenance and replacements
2. What Is a Shock Tester?
A shock tester is a mechanical device that delivers controlled drop impacts to a caster assembly. The motion simulates curb strikes, potholes, and handling drops. By fixing load, height, and cycle count, we obtain a reliable baseline to compare materials and structures.
3. Our Test Setup
| Test Load | Equivalent Weight | Drop Repetitions | Typical Application |
|---|---|---|---|
| 225 lb | 102 kg | 5–10 drops (customizable) | Office & light industrial casters |
| 300 lb | 136 kg | 5–10 drops (customizable) | Heavy-duty & equipment casters |
4. Results & Real-World Meaning
Under 225–300 lb dynamic load and up to 10 drops, Enjoying Go PU casters remained crack-free, deformation-free, and showed no tire–core separation.
- ★ No visible cracks on hub or tread
- ★ No PU peel-off from nylon core
- ★ Consistent rolling with stable alignment
These outcomes verify the endurance of our one-time injection PU casters and demonstrate that each wheel can handle harsh, repetitive shocks.
Looking for a partner that can customize caster testing to your own standards?
Enjoying Go provides certified test reports and video documentation for client audits.

