China High Lbs Graphite Badminton Racket Supplier
High LBS denotes the maximum string tension a racket frame can sustain without permanent deformation, typically measured in pounds-force. Suppliers in China engineer graphite lay‑ups to achieve
China High LBS Graphite Badminton Racket Supplier
High LBS denotes the maximum string tension a racket frame can sustain without permanent deformation, typically measured in pounds-force. Suppliers in China engineer graphite lay‑ups to achieve tolerances of 30 LBS + while maintaining low mass for rapid swing speeds.
Material Composition and Construction
The frame uses high‑modulus graphite fibers (tensile modulus ≈ 420 GPa) woven in a biaxial pattern to distribute hoop and longitudinal stresses. A thin epoxy resin matrix (glass transition temperature ≈ 130 °C) binds the layers, providing a damping ratio of 0.02–0.03 Hz⁻¹ to reduce vibration transmission to the hand.
A tapered shaft design incorporates a gradual reduction in wall thickness from 0.8 mm at the throat to 0.5 mm at the tip, optimizing flexural stiffness while minimizing torsional twist during impact.
Performance Characteristics
Unstrung weight ranges from 78 g to 84 g, allowing players to select a head‑light balance (≈ 285 mm from butt) for quick maneuverability or a slightly head‑heavy bias (≈ 295 mm) for added power.
Flexural modulus of the shaft measures 7.5 GPa ± 0.3 GPa, translating to a bend point at 220 mm from the butt under a 5 N load. This stiffness yields a rebound efficiency of 84 % as measured by ASTM F1895‑19.
The frame tolerates string tensions up to 34 LBS (≈ 151 N) without exceeding a 0.15 % permanent elongation, verified through cyclic tension testing at 10 000 cycles.
Applications
Competitive singles players benefit from the low swing weight and high tension capacity, enabling rapid wrist snap and precise shot placement. Doubles players prefer the slightly head‑heavy variants for increased smash power while retaining defensive agility.
Training academies select the mid‑weight range (80‑82 g) for durability under repeated high‑tension stringing, reducing frame fatigue over a typical season of 500+ hours of play.
Quality Control and Testing
Each batch undergoes three‑point bend testing to confirm flexural stiffness within ± 5 % of target. Resonance frequency analysis identifies any internal delamination; acceptable damping loss factor is below 0.018.
String tension retention is measured after 24 h at 30 LBS; permissible loss is ≤ 0.8 LBS. Surface finish is inspected for roughness (Ra < 0.8 µm) to ensure consistent grip adhesion.
Customization Options
- Grip size: G1 (75 mm), G2 (80 mm), G3 (85 mm) with optional over‑wrap thickness.
- Shaft flex: Soft (6.8 GPa), Medium (7.5 GPa), Stiff (8.2 GPa) via lay‑up variation.
- Paint finish: Matte, gloss, or UV‑curable anti‑abrasion coating; Pantone matching available.
- Logo placement: Laser‑etched or water‑transfer decal on shaft or throat.
- String pattern: Standard 16×19 or custom 18×20 for specialized spin characteristics.
Specification Table
| Parameter | Typical Value | Customizable Range |
|---|---|---|
| Frame Material | High‑modulus graphite (420 GPa) | Graphite‑carbon hybrid available |
| Unstrung Weight | 80 g ± 2 g | 78 g – 86 g |
| Balance Point (from butt) | 290 mm | 285 mm – 300 mm |
| Shaft Flexural Modulus | 7.5 GPa | 6.8 GPa – 8.2 GPa |
| Maximum String Tension | 34 LBS (151 N) | 30 LBS – 38 LBS |
| Overall Length | 675 mm | 670 mm – 680 mm |
| Grip Size Options | G2 (80 mm) | G1, G2, G3 |
| Surface Finish | Matte UV‑curable | Matte, gloss, anti‑abrasion |
Frequently Asked Questions
Yes, balance can be tuned by adjusting the shaft taper and throat reinforcement; specify target mm from butt when requesting a quote.
Desired weight range, grip size, shaft flex, maximum string tension, paint finish, logo artwork (vector), and order quantity.
Each unit undergoes dimensional check, flexural modulus test, tension‑hold test, and surface roughness inspection; a batch test report is provided on request.
Rackets are placed in individual polyethylene sleeves, then packed in corrugated cartons with corner protectors and moisture‑absorbent packets; palletized for FCL shipments.
Lead time ranges from 18 to 25 working days after receipt of confirmed artwork and deposit, depending on customization complexity.
Contact for Inquiry
To discuss your specifications or request a sample, please send an inquiry using the form below.
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