Hand grip accessories for badminton rackets include overgrips, replacement grips, and shock‑absorbing sleeves. These components directly affect player comfort, control, and vibration damping during
Hand grip accessories for badminton rackets include overgrips, replacement grips, and shock‑absorbing sleeves. These components directly affect player comfort, control, and vibration damping during play. Industrial buyers specify them based on measurable properties such as thickness, durometer hardness, tensile elongation, and moisture absorption rate.
The accessories are manufactured from elastomeric blends, typically polyurethane (PU) or ethylene‑vinyl acetate (EVA) foams, laminated with a textile backing. Thickness ranges from 0.5 mm for thin overgrips to 2.5 mm for cushioned replacement grips. Density varies between 0.12 g/cm³ and 0.25 g/cm³ depending on the foam formulation.
PU grips provide a durometer hardness of 60‑80 Shore A, offering a tacky feel and high abrasion resistance. EVA cores deliver lower hardness (40‑55 Shore A) and superior shock absorption, reducing peak impact forces by up to 30 % compared with bare graphite shafts. Textile backings are usually polyester or nylon with a tensile strength of 45‑55 MPa to prevent delamination under repeated stress.
Standard grip lengths are 1 000 mm to accommodate full‑size rackets, with tolerances of ±2 mm. Width is matched to the handle circumference, typically 20 mm to 28 mm, with a radial thickness tolerance of ±0.1 mm. Weight per meter ranges from 4 g for ultrathin overgrips to 12 g for heavy‑duty cushioned grips.
OEMs integrate these grips during the final assembly stage, where the grip is wrapped around the tapered graphite shaft and secured with adhesive or heat‑shrink tape. The grip’s compressive modulus influences the transfer of impact load from the shuttle to the player’s hand; a modulus of 0.8‑1.2 MPa provides a balance between feedback and vibration dampening. Proper thickness ensures that the overall handle diameter stays within the 22‑24 mm range preferred by competitive players.
Each batch undergoes inline thickness measurement using laser micrometers (±0.01 mm accuracy). Durometer is verified with a Shore A durometer gauge at three points per sample. Tensile elongation is tested per ASTM D412, with acceptance criteria of 250‑400 % for PU and 350‑500 % for EVA. Moisture absorption is gauged by conditioning specimens at 90 % RH for 24 h; acceptable weight gain is < 2 %. Visual inspection checks for surface defects, delamination, and color uniformity under D65 lighting.
| Property | Typical Range | Test Method |
|---|---|---|
| Thickness | 0.5 mm – 2.5 mm | Laser micrometer |
| Durometer (Shore A) | 40 – 90 | ASTM D2240 |
| Density | 0.12 – 0.25 g/cm³ | ASTM D792 |
| Tensile Elongation | 250 % – 500 % | ASTM D412 |
| Moisture Absorption (24 h, 90 % RH) | < 2 % | ASTM D570 |
| Coefficient of Friction (dry) | 0.35 – 0.55 | ASTM D1894 |
For technical data sheets, sample requests, or to discuss specific performance targets, please contact our engineering team using the form below.
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